3-phase high voltage inverter power board for foc …...the power block, based on the high voltage...

June 2014 DocID025649 Rev 1 1/35

UM1703User manual

3-phase high voltage inverter power board for FOC based onSTGIPN3H60A (SLLIMM™-nano)

IntroductionThe 3-phase high voltage inverter power board features the STGIPN3H60A (SLLIMM™-nano) for field-oriented control (FOC) of permanent magnet synchronous motors (PMSM). It is also referred to by the order code STEVAL-IHM045V1.

This 3-phase inverter is designed to perform the FOC of sinusoidal-shaped back-EMF PMSMs with or without sensors, with nominal power up to 100 W. The flexible, open and high-performance design consists of a 3-phase inverter bridge based on:

• The STGIPN3H60A SLLIMM™-nano (small low-loss intelligent molded module) IPM, 3-phase IGBT inverter - 3 A - 600 V very fast IGBT

• The VIPer06 fixed frequency VIPer™ plus family

The system is specifically designed to achieve fast and accurate conditioning of the current feedback, thereby matching the requirements typical of high-end applications such as field oriented motor control.

The board is compatible with 110 and 230 VAC mains, and includes a power supply stage with the VIPer06 to generate the +15 V and the +3.3 V supply voltage required by the application. Finally, the board can be interfaced with the STM3210B-EVAL, STM32100B-EVAL, STM3210E-EVAL, STM320518-EVAL, STM3220G-EVAL, STM32303C-EVAL, STM3240G-EVAL (STM32 microcontroller evaluation board), STEVAL-IHM022V1 (high density dual motor control demonstration board based on the STM32F103ZE microcontroller), STEVAL-IHM039V1 (dual motor drive control stage based on the STM32F415ZG microcontroller) and with the STEVAL-IHM033V1 (control stage based on the STM32F100CB microcontroller suitable for motor control), through a dedicated connector.

Figure 1. STEVAL-IHM045V1 evaluation board

www.st.com

http://www.st.com

Contents UM1703

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Contents

1 Main features . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5

1.1 Target applications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5

2 System architecture . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6

3 Safety and operating instructions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7

3.1 General . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7

3.2 Intended use of the evaluation board . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7

3.3 Installing the evaluation board . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7

3.4 Electronic connections . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7

3.5 Operating the evaluation board . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8

4 STGIPN3H60A characteristics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9

4.1 Main features . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9

4.2 Block diagram . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9

5 VIPer06L characteristics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10

5.1 Main features . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10

5.2 Block diagram . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10

6 TSV994 characteristics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11

6.1 Main features . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .11

7 TS374 characteristics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12

7.1 Main features . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12

8 Electrical characteristics of the board . . . . . . . . . . . . . . . . . . . . . . . . . 13

9 Board architecture . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14

9.1 Power supply . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14

9.2 Hardware overcurrent detecting network . . . . . . . . . . . . . . . . . . . . . . . . . 14

9.3 Amplifying network for current measurement . . . . . . . . . . . . . . . . . . . . . . 15

9.4 Temperature feedback . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15

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UM1703 Contents

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9.5 Hall sensor/quadrature encoder inputs . . . . . . . . . . . . . . . . . . . . . . . . . . 15

10 STEVAL-IHM045V1 schematic diagrams . . . . . . . . . . . . . . . . . . . . . . . . 16

10.1 Overcurrent detecting network . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20

10.2 Direct motor currents sampling from shunt resistors . . . . . . . . . . . . . . . . 20

10.3 Current sensing amplification network using external operational amplifiers 22

10.4 Jumpers configuration . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 23

10.4.1 Microcontroller supply voltage . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 23

10.4.2 Current sensing network topology settings . . . . . . . . . . . . . . . . . . . . . . 24

10.4.3 Power supply configuration . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 24

10.5 Motor control connector J1 pinout . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 24

11 Using the STEVAL-IHM045V1 with the STM32 FOC firmware library . 26

11.1 Environmental considerations . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 26

11.2 Hardware requirements . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 27

11.3 Software requirements . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 27

11.4 STM32 FOC firmware library customization . . . . . . . . . . . . . . . . . . . . . . . 27

12 Bill of materials . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 30

13 References . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 33

14 Revision history . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 34

List of figures UM1703

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List of figures

Figure 1. STEVAL-IHM045V1 evaluation board . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1Figure 2. Motor control system architecture. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6Figure 3. STGIPN3H60A block diagram . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9Figure 4. VIPer06L block diagram . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10Figure 5. STEVAL-IHM045V1 block diagram . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14Figure 6. Current sensing and overcurrent detection networks . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16Figure 7. Sensor inputs, motor control connector . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17Figure 8. Inverter schematic . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18Figure 9. Power supply schematic . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19Figure 10. Current sensing network . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 21Figure 11. Changing current sensing network . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 21Figure 12. Current sensing amplifying network . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 22Figure 13. Motor control connector J1 (top view). . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 24

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UM1703 Main features

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1 Main features

The STEVAL-IHM045V1 inverter power stage board has the following characteristics:

• Compact size

• Wide-range input voltage (30-270 VAC) maximum power up to 100 W at 230 VAC input

• The STGIPN3H60A SLLIMM™-nano (small low-loss intelligent molded module) IPM, 3-phase IGBT inverter - 3 A - 600 V very fast IGBT

• The VIPer06 fixed frequency VIPer™ plus family

• DC bus voltage power supply connectors

• External 15 V input

• Connector for interfacing with the STM3210B-EVAL, STM32100B-EVAL, STM3210E-EVAL, STM320518-EVAL, STM3220G-EVAL, STM32303C-EVAL, STM3240G-EVAL, STEVAL-IHM022V1, STEVAL-IHM039V1 and STEVAL-IHM033V1

• Efficient DC-DC power supply (15 V, 3.3 V)

• Suitable for sinusoidal FOC drive

• Easy selectable single or three shunt current reading topology with fast operational amplifier (with offset insertion for bipolar currents)

• Configurable for direct motor current sampling from shunt resistors (exploiting the topologies of current measurement with operational amplifiers embedded in the microcontroller)

• Hardware overcurrent detecting network

• Temperature sensor

• Hall sensor/quadrature encoder inputs.

1.1 Target applications• High efficiency drain pumps for domestic white goods like dishwashers and washing

machines

• Compressor drives for refrigerators

• Ceiling fans

• Inverters for high efficiency circulating water pumps in heating systems for single-family homes

• High efficiency and reliable solutions for small power transfer pumps for waste sludge –sewage systems in single-family homes, waste piping

• High efficiency transfer pumps for outlet condensation water

• High efficiency extractor hoods and blowers for gas furnace applications

System architecture UM1703

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2 System architecture

A generic motor control system can be represented as the arrangement of four main blocks (Figure 2).

• Control block: its main tasks are to accept user commands and motor drive configuration parameters, and to provide digital signals to implement the appropriate motor driving strategy

• Power block: performs the power conversion from the DC bus, transferring it to the motor by means of a 3-phase inverter topology

• The motor: the STEVAL-IHM045V1 board can drive both PMSM and BLDC motors in FOC

• Power supply block: can accept input voltages of 30 to 270 VAC and provides the appropriate supply levels for both the control block and power block devices.

Figure 2. Motor control system architecture

With respect to the above motor control system architecture, the STEVAL-IHM045V1 incorporates the power supply and power hardware blocks.

The power block, based on the high voltage STGIPN3H60A (SLLIMM™-nano), converts the signals coming from the control block into power signals capable of correctly driving the 3-phase inverter, and therefore the motor.

The power supply can be fed with 110 or 230 VAC mains with a maximum allowed input power of 100 W at 230 VAC (refer to Section 8).

In the control block, an MC connector is mounted on the STEVAL-IHM045V1 and the STM3210B-EVAL, STM32100B-EVAL, STM3210E-EVAL, STM320518-EVAL, STM3220G-EVAL, STM32303C-EVAL, STM3240G-EVAL, STEVAL-IHM022V1, STEVAL-IHM039V1 and STEVAL-IHM033V1, which allows the STM32 microcontroller evaluation board to be used as a hardware platform for development.

The “STM32 FOC firmware library” is ready to be used in conjunction with the STM32 MC workbench as a software platform for the sensorless control of PMSMs (see Section 11).

The required STM32 motor control workbench data is reported in Table 5.

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UM1703 Safety and operating instructions

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3 Safety and operating instructions

3.1 General

Warning: During assembly and operation, the STEVAL-IHM045V1 evaluation board poses several inherent hazards, including bare wires, moving or rotating parts and hot surfaces. Serious personal injury and damage to property may occur if the kit or its components are used or installed incorrectly.

All operations involving transportation, installation and use, as well as maintenance, should be performed by skilled technical personnel (applicable national accident prevention rules must be observed). The term “skilled technical personnel” refers to suitably-qualified people who are familiar with the installation, use and maintenance of electronic power systems.

3.2 Intended use of the evaluation boardThe STEVAL-IHM045V1 evaluation board is designed for demonstration purposes only and must not be used for electrical installations or machinery. Technical data and information concerning the power supply conditions are detailed in the documentation and should be strictly observed.

3.3 Installing the evaluation boardThe installation and cooling of the evaluation board must be in accordance with the specifications and target application.

• The motor drive converters must be protected against excessive strain. In particular, components should not be bent or isolating distances altered during transportation or handling.

• No contact must be made with other electronic components and contacts.

• The board contains electrostatically-sensitive components that are prone to damage if used incorrectly. Do not mechanically damage or destroy the electrical components (potential health risk).

3.4 Electronic connectionsApplicable national accident prevention rules must be followed when working on the main power supply with a motor drive. The electrical installation must be completed in accordance with the appropriate requirements (for example, cross-sectional areas of conductors, fusing, PE connections, etc.).

Safety and operating instructions UM1703

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3.5 Operating the evaluation boardThe system architecture that supplies power to the STEVAL-IHM045V1 evaluation board must be equipped with additional control and protective devices in accordance with the applicable safety requirements (i.e., compliance with technical equipment and accident prevention rules).

Warning: Do not touch the evaluation board after it has been disconnected from the voltage supply as several parts and power terminals containing possibly-energized capacitors need time to discharge.

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UM1703 STGIPN3H60A characteristics

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4 STGIPN3H60A characteristics

4.1 Main features• IPM 3 A, 600 V, 3-phase IGBT inverter bridge including control ICs for gate driving and

freewheeling diodes

• Optimized for low electromagnetic interference

• VCE(sat) negative temperature coefficient

• 3.3 V, 5 V, 15 V CMOS/TTL inputs comparators with hysteresis and pull down resistors

• Undervoltage lockout

• Internal bootstrap diode

• Interlocking function

• Optimized pinout for easy board layout

4.2 Block diagramFigure 3 shows the block diagram of the STGIPN3H60A device.

Figure 3. STGIPN3H60A block diagram

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VIPer06L characteristics UM1703

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5 VIPer06L characteristics

5.1 Main features• 800 V avalanche rugged power section

• PWM operation with frequency jittering for low EMI

• Operating frequency 60 kHz

• No need of auxiliary winding in low power application

• Standby power < 30 mW at 265 VAC

• Limiting current with adjustable set point

• On-board soft-start

• Safe auto-restart after a fault condition

• Hysteretic thermal shutdown

5.2 Block diagramFigure 4 shows the block diagram of the VIPer06L device.

Figure 4. VIPer06L block diagram

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UM1703 TSV994 characteristics

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6 TSV994 characteristics

6.1 Main features• Low input offset voltage: 1.5 mV max

• Rail-to-rail input and output

• Wide bandwidth 20 MHz, stable for gain > 3

• Low power consumption: 1.1 mA maximum

• High output current: 35 mA

• Operating from 2.5 V to 5.5 V

• Low input bias current, 1 pA typ

• ESD internal protection > 5 kV

• Latch-up immunity

TS374 characteristics UM1703

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7 TS374 characteristics

7.1 Main features• Wide single supply range or dual supplies 3 V to 16 V or ±1.5 V to ±8 V

• Very low supply current: 0.1 mA/COMP independent of supply voltage

• Extremely low input bias current: 1 pA typical

• Extremely low input offset currents: 1 pA typical

• Low input offset voltage

• Input common-mode voltage range includes GND

• Low output saturation voltage: 150 mV typical

• Output compatible with TTL, MOS and CMOS

• High input impedance: 1012 Ω typical

• Fast response time: 200 ns typical for TTL level input step

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UM1703 Electrical characteristics of the board

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8 Electrical characteristics of the board

The board is designed to be supplied by an alternate current power supply through connector J7 (AC mains) or by a direct current power supply through connector J8 (DC bus). When a DC bus is applied, the correct polarity must be respected.

Stresses above the limits shown in Table 1 may cause permanent damage to the devices present on the board. These are stress ratings only and functional operation of the device under these conditions is not implied. Exposure to maximum rating conditions for extended periods may affect device reliability.

A bias current measurement may be useful to check the working status of the board. If the measured value is considerably higher than the typical value, some damage has occurred to the board. Supply the board using a 40 V power supply connected to J8, respecting the polarity. When the board is properly supplied, LED D16 turns on and the typical bias current is 7 mA.

Table 1. Board electrical characteristics

Board parametersSTEVAL-IHM045V1

UnitMin Max

AC Mains – J7 30 270 Vrms

DC Bus – J8 40 400 V

Board architecture UM1703

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9 Board architecture

The STEVAL-IHM045V1 can be schematized as shown in Figure 5.

Figure 5. STEVAL-IHM045V1 block diagram

9.1 Power supplyThe power supply can address an AC input voltage (J7) ranging from 30 VAC to 270 VAC.

The alternating current input is rectified by a diode bridge and a bulk capacitor to generate a direct current bus voltage approximately equal to √2 VAC (neglecting the voltage drop across the diodes and the bus voltage ripple). A VIPer06 is then used in a non-insulated flyback topology to generate the +15 V supply voltage required by the STGIPN3H60A and to supply the low drop voltage regulators (LD1117S33TR) to generate the 3.3 V used as the Vdd_Micro reference voltage. It is also possible to provide the microcontroller supply voltage to the control board via motor control connector J1 when R7 is mounted with a 0 ohm resistor (default setting).

9.2 Hardware overcurrent detecting networkThe hardware overcurrent detecting network is implemented using the TS374 Low power quad CMOS voltage comparator (U11).

The fault signal (low level) is fed back to the J1 connector if the overcurrent event is detected and connected to the emergency input of the microcontroller.

See Section 10.1 for more detailed information on hardware current detecting network.

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UM1703 Board architecture

35

9.3 Amplifying network for current measurementThe voltages across the shunt resistor are amplified by Aop amplification gains to correctly condition the current feedback signals and optimize the output voltage range for a given phase current range and A-D converter input dynamics. Refer to Section 10.3 for more detailed information on how to dimension the op-amp conditioning network depending on user needs.

To implement the current measurement network, the TSV994 rail-to-rail input/output high merit factor op-amps (U10) is used.

9.4 Temperature feedbackTemperature feedback is performed by way of an NTC placed below the package of the STGIPN3H60A. It enables the monitoring of the power stage temperature so as to prevent any damage to the inverter caused by overtemperature.

9.5 Hall sensor/quadrature encoder inputsThe board can be used to run the motor using the Hall sensors or quadrature encoder as position/speed feedback connecting the sensors signals to connector J2.

Note: Note: The Hall sensors or quadrature encoder sensor is not power supplied by STEVAL-IHM045V1.

The default configuration is intended for push-pull sensors. The R8, R11 and R12 resistors are used to limit the current injected into the microcontroller if the sensor high voltage is above Vdd-micro.

The maximum current injected should be less than the maximum present in the microcontroller datasheet.

If the sensors have open drain outputs and are supplied by 3.3 V it is possible to mount the three pull-up resistors R2, R3 and R4. Otherwise, if supplied with more than 3.3 V, the three pull-up resistor have to be mounted externally.

STEVAL-IHM045V1 schematic diagrams UM1703

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10 STEVAL-IHM045V1 schematic diagrams

Figure 6. Current sensing and overcurrent detection networks

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-+5 6

U10

BTS

V99

4IP

T

768

0

1kR

102

C31

-

680p

F 10

V

+12

U10

DTS

V99

4IP

T

1314

R10

8N

.M.

0R

104

R62

4.7k

-+U

11B

7

TS37

4CD

T6

1C

30

680p

F 10

V

C26

680p

F 10

V

C40

-

2.2n

F 10

V

+

U11

D

TS37

4CD

T

11 1013

R84

2.2k

R93

1k

R70

5.6k

R95

1k

C44

1uF1

0V

0

R10

5R

971k

R82

N.M

.

R10

6N

.M.

R74

N.M

.

R85

5.6k

R76

2.2k

R79

DocID025649 Rev 1 17/35

UM1703 STEVAL-IHM045V1 schematic diagrams

35

Figure 7. Sensor inputs, motor control connector

A+/H1

B+/H2

Z+/H3

Only for sensors

Pha

seW

_LP

hase

W_H

Pha

seU

_LP

hase

U_H

Pha

seV

_LP

hase

V_H

Em

erge

ncy

OC

Boo

st

Bus

Vol

t fee

dbac

k

Enc

Z/H

3

Tem

pera

ture

feed

back

Enc

A/H

1

Enc

B/H

2

Enc

A/H

1E

nc B

/H2

Enc

Z/H

3

Cur

r_fd

bk1

Cur

r_fd

bk2

Cur

r_fd

bk3

WC

urr_

fdbk

1_G

ND

WC

urr_

fdbk

2_G

ND

WC

urr_

fdbk

3_G

ND

Vdd

_Mic

ro

Vdd

_Mic

ro

Vdd

_Mic

ro

R4

N.M

.

R8

4.7k

R3

N.M

.

R11

4.7k

C1

10pF 10V

R12

4.7k

J2

1 2 3

Stri

plin

e m

. 1x3

0R

5R

6N

.M.

R2

N.M

.

J1

12

3

MO

TOR

_CO

NN

45

67

89

1011

1213

1415

1617 19 21 23 25

2627

2829

3031

3233

3418 20 22 24

C3

10pF 10V

C2

10pF 10V

R7

0


18/35 DocID025649 Rev 1

Figure 8. Inverter schematic

MOTOR

Test points

3Sh

1Sh

3Sh

RS model C621/1206

Placed near the IGBT bridge

1Sh

RS model 434-740

GN

D

GN

D

Pha

se A

Pha

se B

Pha

se C

GN

D

GN

D

Tem

pera

ture

feed

back

Pha

se A

Pha

se B

Pha

se C

Pha

seW

_HP

hase

W_L

Pha

seU

_L

Pha

seV

_HP

hase

V_L

Pha

seU

_H

Pha

seW

_HP

hase

W_L

Pha

seU

_HP

hase

U_L

Pha

seV

_HP

hase

V_L

Em

erge

ncy

Tem

pera

ture

feed

back

Bus

Vol

t fee

dbac

k

Pha

se A

Pha

se B

NU

Pha

se C

NW

Vsh

unt_

2

Vsh

unt_

1V

shun

t_2

Vsh

unt_

3C

urr_

fdbk

1C

urr_

fdbk

2C

urr_

fdbk

3

Vsh

unt_

1_G

ND

Vsh

unt_

2_G

ND

WC

urr_

fdbk

1_G

ND

NU

Vsh

unt_

3_G

ND

WC

urr_

fdbk

2_G

ND

NW

WC

urr_

fdbk

3_G

ND

Vsh

unt_

1

Vsh

unt_

2

Vsh

unt_

3

Vsh

unt_

2

Vdd

_Mic

ro

Vbu

s

+15V

Vbu

s

+15V

Vdd

_Mic

ro

TP19

R46

0.47

C16

2.2u

F 25

V

NTC

1 NTC

10k

TP2

TP6

TP14

TP20

C15

2.2u

F 25

V

TP7

U2 G

ND

STG

IPN

3H60

A

2 1N

C_2

Vcc

W3

HIN

W

5 4LI

N W

NC

_66

NC

_7

8 7N

C_8

Vcc

V9

HIN

V

11 10LI

N V

12N

C_1

2

Vcc

U13

HIN

U

15 14N

C_1

5

LIN

U16

17

P

Vbo

ot U

18

U19

N U

20 21

V

Vbo

ot V

22

N V

23 24

W

Vbo

ot W

25

N W

26

J10

CO

N3

1 2 3

0R

55

C13

2.2u

F 25

V

TP21

J6CO

N3

1 2 3

C14

470n

F 25

V

R44

0.47

0R

56

TP3

TP22

TP17

0R

57

J9CO

N3

1 2 3

TP4

TP1

R45

0.47

TP18

C20

10nF

10V

R51

4.7k

TP5

TP13

DocID025649 Rev 1 19/35


35

Figure 9. Power supply schematic

GN

D

Bus

Vol

t fee

dbac

k

Vbu

s

Vbu

s+1

5V

+15V

Vbu

s

Vdd

_Mic

ro

D9

STT

H1R

04U

R53

470k

1/4

W

R11

3

15k

NTC

2

5ohm

12

+C

2110

0uF

450V

D10

STT

H1R

04U

D14

1N41

48W

T

J11

CO

N2

D12

STT

H1L

06A

+C

2822

uF25

V

D24

STP

S1L

60M

F

R11

0

15k

D8

STT

H1R

04U

J12

2 1

Ext

. 15V

U12

1G

ND

VIP

er06

LS

2V

DD

3LI

MFB45

CO

MP

6D

RA

IN_1

7D

RA

IN_2

8D

RA

IN_3

9D

RA

IN_4

10D

RA

IN_5

T2

123

456

F12

A

R11

122

k

C22

4.7n

F 10

V

+C

2347

uF25

V

+C

47

D16

GR

EE

N L

ED

SM

D

2.2u

F50

V

C46

1nF

630V

C49

22nF

6.3V

J82 1

DC

Bus

R54

8.2kR52

470k

1/4

W

R11

42.

2k1/

8W

+C

4210

uF6.

3V

C48

100n

F

50V

C50

1nF

6.3V

D23

STP

S11

50M

F

R10

922

0k

R11

52k

J7

2 1

AC

MA

INS

D7

STT

H1R

04U

R11

251

k

U3

2V

out

LD11

17S

33TR

1

GN

D

3V

in


20/35 DocID025649 Rev 1

10.1 Overcurrent detecting networkHardware overcurrent detecting network is implemented on the board thanks to the TS374 Low power quad CMOS voltage comparator (U11). All three voltage drops across the shunt resistors are monitored to detect the overcurrent condition, three comparators of the TS374 product are used.

Overcurrent detection activates as soon as the voltage of any of the non-inverting input pins (4,6,8) rises above the reference approximately equal to 0.5 V, and, given the default value of the shunt resistors (0.47 Ω), it follows that the default value for the maximum allowed current (ICP) is:

Equation 1

If necessary, the overcurrent threshold can be modified by changing the value of shunt resistors R44, R45 and R46.

The outputs of the three comparators are combined together to generate a unique emergency signal that is fed to the microcontroller brake input through the J1 connector.

10.2 Direct motor currents sampling from shunt resistorsThe board is configured by default for direct motor current sensing from shunt resistors. Figure 10 shows the current sensing network relative to the motor phase A current. The configuration of the current sensing can be modified by acting on R55, R56, R57, R58, R69 and R79 as described in Table 2.

Table 2. Configuration of the current sensing

ResistorsDirect current sensing from shunt resistors

(default setting)Using external op-amp

R55, R56, R57 Mounted (0Ω) Not mounted

R58, R69, R79 Not mounted Mounted (0Ω)

DocID025649 Rev 1 21/35


35

Figure 10. Current sensing network

Figure 11 shows the layout of the board. The red sections highlight the position of the components that must be modified when the current sensing network needs to be changed.

Figure 11. Changing current sensing network


22/35 DocID025649 Rev 1

10.3 Current sensing amplification network using external operational amplifiersThe board is configured by default for direct motor current sensing from shunt resistors. See Table 2 for configuring the board to use the external operational amplifier TSV994.

Figure 12 shows the current sensing amplifying network when using the external operational amplifier TSV994.

Figure 12. Current sensing amplifying network

The voltage at node “Curr_fdbk” can be computed as the sum of a bias and a signal component, respectively equal to:

Equation 2

Equation 3

With the default values, this gives:

• VBIAS=1.48V

• VSIGN=3.1•RShunt•I

• AOP=3.1

As such, the maximum current amplifiable without distortion is equal to:

Equation 4

U10TSV994IPT

Curr_fdbk

0

Vshunt

Vshunt_GND

680

4.7k

+3.3V

2.2k

5.6k

+

-

R60

R63

R62

R70

DocID025649 Rev 1 23/35


35

Equation 5

With the default values, this gives:

Equation 6

Equation 7

Equation 8

Equation 9

Note that the IMAX value can be modified by simply changing the values of the shunt resistors.

10.4 Jumpers configurationThis section provides jumper settings for configuring the STEVAL-IHM045V1 board.

Two types of jumpers are used on the STEVAL-IHM045V1 board:

• 3-pin jumpers with two possible positions, the allowable settings for which are presented in the following sections.

• 2-pin jumpers with two possible settings: fitted if the jumper is closed and not fitted if the jumper is open.

The STEVAL-IHM045V1 board can be also configured using a set of 0 Ω resistor. These resistors are used as 2-pin jumpers with two possible settings: mounted and not mounted.

10.4.1 Microcontroller supply voltage

The 3.3 V microcontroller supply voltage can be fed into J1 pin 28 through the R7 resistor. This configuration permits the control board to be supplied with 3.3 V using the J1 connector


24/35 DocID025649 Rev 1

and is the default configuration. If the control board is self-supplied, it is possible to remove the R7 resistor to avoid conflict in the supply voltages.

10.4.2 Current sensing network topology settings

The current sensing network can be configured for three shunt current reading or for single shunt current reading. In both cases, the current sensing network topology supports bipolar current reading. This means that the current flows in the shunt resistor in both directions: to the ground and from the ground. This is the case of sinusoidal control and the current sensing network adds an offset value in order to measure the negative values.

To select the proper current sensing network topology, the J9 and J10 jumpers are used according to Table 3.

10.4.3 Power supply configuration

Jumper J11 can be used to enable or disable the power supply section based on VIPer06L. When J11 is fitted (default configuration), the power supply section is enabled and the +15 V is regulated by the on board VIPer06L when the DC bus voltage is present.

If the DC bus voltage required by the application exceeds the specifications stated in Table 1, it is possible to open the J11 jumper to exclude the power supply section based on VIPer06L and supply an external reference voltage of 15 V to connector J12. The maximum DC bus voltage applied in this case may still not exceed the maximum allowed voltage for STGIPN3H60A.

10.5 Motor control connector J1 pinout

Figure 13. Motor control connector J1 (top view)

Table 3. Jumpers settings for the current sensing network topology selection

Topology Jumper settings Jumper settings

Three shunt current readingJ9 between pins 1 and 2

J10 between pins 1 and 2

Single shunt current readingJ9 between 2 and 3

J10 between 2 and 3

DocID025649 Rev 1 25/35


35

Table 4. Motor control connector J1 pin assignment

J1 Pin Function J1 Pin Function

1 Emergency stop 2 GND

3 PWM-UH 4 GND

5 PWM-UL 6 GND

7 PWM-VH 8 GND

9 PWM-VL 10 GND

11 PWM-WH 12 GND

13 PWM-WL 14 Bus voltage

15 Phase A current in three shunts 16 GND

17Phase B current in three shunts orCurrent feedback in single shunt

18 GND

19 Phase C current in three shunts 20 GND

21 Not connected 22 GND


25 Not connected 26Heatsink

temperature

27 Not connected 28 VDD μ


31 H1/Enc A 32 GND

33 H2/Enc B 34 H3/Enc Z

Using the STEVAL-IHM045V1 with the STM32 FOC firmware library UM1703

26/35 DocID025649 Rev 1

11 Using the STEVAL-IHM045V1 with the STM32 FOC firmware library

The “STM32 FOC firmware library” provided together with the STM3210B-MCKIT, STM32100B-MCKIT or available for download in the ST website, performs the field-oriented control (FOC) of a permanent magnet synchronous motor (PMSM) in both sensor and sensorless configurations.

It is possible to configure the firmware to use the STEVAL-IHM045V1 as the power stage (power supply plus power block of Figure 2) of the motor control system.

This section describes the changes that need to be applied to the “STM32 FOC firmware library” in order for the firmware to be compatible with the STEVAL-IHM045V1.

11.1 Environmental considerations

Warning: The STEVAL-IHM045V1 evaluation board must only be used in a power laboratory. The voltage used in the drive system presents a shock hazard.

The kit is not electrically isolated from the DC input. This topology is very common in motor drives. The microprocessor is grounded by the integrated ground of the DC bus. The microprocessor and associated circuitry are hot and MUST be isolated from user controls and communication interfaces.

Warning: Any measurement equipment must be isolated from the main power supply before powering up the motor drive. To use an oscilloscope with the kit, it is safer to isolate the DC supply AND the oscilloscope. This prevents a shock from occurring as a result of touching any single point in the circuit, but does NOT prevent shocks when touching two or more points in the circuit.

An isolated AC power supply can be constructed using an isolation transformer and a variable transformer.

Note: Isolating the application rather than the oscilloscope is highly recommended in any case.

DocID025649 Rev 1 27/35

UM1703 Using the STEVAL-IHM045V1 with the STM32 FOC firmware library

35

11.2 Hardware requirementsThe following items are required to run the STEVAL-IHM045V1 together with the “STM32 FOC firmware library”.

• The STEVAL-IHM045V1 board

• Any of the STM32 evaluation boards with an MC connector such as STM3210B-EVAL (MB525), STEVAL-IHM022V1, STEVAL-IHM039V1, STEVAL-IHM033v1, STM32100B-EVAL (MB871), STM3210E-EVAL (MB672), STM320518-EVAL (MB965), STM32xG-EVAL (MB786), STM32303C-EVAL (MB1019)

• An insulated AC or DC power supply

• A programmer/debugger dongle as required by the control board (not included in the package). Refer to the control board user manual to find a supported dongle. Use of an insulated dongle is always recommended.

• A 3-phase brushless motor with a permanent magnet rotor (not included in the package)

• An insulated oscilloscope (as necessary)

• An insulated multimeter (as necessary)

11.3 Software requirementsTo customize, compile and program (in the microcontroller memory) the “STM32 FOC firmware library”, a firmware developing toolchain must be installed. For documentation about the “STM32 FOC firmware library”, refer to the STMicroelectronics website or contact your nearest STMicroelectronics office. Refer to the control board user manual for further details.

11.4 STM32 FOC firmware library customizationTo customize the “STM32 FOC firmware library” the “ST Motor control workbench” can be used.

The required parameters for the power stage related to the STEVAL-IHM045V1 are reported in Table 5.

Using the STEVAL-IHM045V1 with the STM32 FOC firmware library UM1703

28/35 DocID025649 Rev 1

Table 5. STEVAL-IHM045V1 motor control workbench parameters

Parameter STEVAL-IHM045V1 default value Unit

ICL shut out Disabled

Dissipative brake Disabled

Bus voltage sensing Enabled

Bus voltage divider

125 (using STM3210B-EVAL, STM32100B-EVAL, STM3210E-EVAL, STM320518-EVAL,

STM3220G-EVAL, STM3240G-EVAL, STEVAL-IHM022V1, STEVAL-IHM039V1 or

STEVAL-IHM033V1)

115 (using STM32303C-EVAL)

Min rated voltage 40 V

Max rated voltage 375 V

Nominal voltage 325 (using 230 VAC) V

Temperature sensing Enabled

V0 1055 mV

T0 25 °C

∆V/∆T 22 mV/°C

Max working temperature on sensor 70 °C

Over current protection Enabled

Comparator threshold 0.50 V

Over current network offset 0 V

Over current network gain 0.47 V/A

Expected overcurrent threshold 1.0638 A

Overcurrent feedback signal polarity Active low

Overcurrent protection disabling network Disabled

Overcurrent protection disabling network polarity

Any

Current sensing Enabled

Current reading topologyThree shunts or one shunt resistor depending

on configuration (see Section 10.4.2)

Shunt resistor(s) value 0.47 Ω

Amplifying network gain(1) 3.1

T-noise 300 ns

T-rise(1) 1900 ns

T-rise(2) 2250 ns

Power switches

Min dead-time1500 ns

DocID025649 Rev 1 29/35

UM1703 Using the STEVAL-IHM045V1 with the STM32 FOC firmware library

35

Parameter STEVAL-IHM045V1 default value Unit

Power switchesMax switching frequency

50 kHz

U,V,W driverHigh side driving signal

Active high

U,V,W driverLow side driving signal

Complemented from high side

Disabled

U,V,W driver

Low side driving signal Polarity

Active high

1. Using external operational amplifier (see Section 10.3)

2. Using direct motor currents sampling and STM32303C-EVAL (see Section 10.2)

Table 5. STEVAL-IHM045V1 motor control workbench parameters (continued)

Bill of materials UM1703

30/35 DocID025649 Rev 1

12 Bill of materials

Table 6. Bill of materials

Reference Part / value Manufacturer Manufacturer code

C1,C2,C3 10pF Any

C25,C29 100nF Any

C14 470nF Any

C33,C35,C40 2.2nF Any

C26,C30,C31 680pF Any

C20 10nF Any

C22 4.7nF Any

C24,C27 4.7uF Panasonic EEE1EA4R7SR

C13,C15,C16 2.2uF Any

C21 100uF

C42 10uF MurataGRM31CR60J106KA01

L

C23 100uF Panasonic ECEV1EA101P

C43,C44,C45 1uF Any

C28 22uF Panasonic EEE1EA220SP

C46 1nF Kemet PFR5 102J630J11L4

C47 2.2uF

C48 100nF

C49 22nF

C50 1nF

R2,R3,R4,R6,R58,R61,R69,R74,R79,R82,R106,R107,R108

,R110N.M Any

R5,R7,R55,R56,R57,R104,R105

0 Any

R8,R11,R12,R51,R62,R75,R83

4.7k Any

R92,R93,R95,R97,R98,R102,R103

1k Any

R44,R45,R46 0.47 IRC LR2512-LF-R470-F

R52,R53 470k Any

R54 8.2k Any

R109 220k Any

R113 15k Any

DocID025649 Rev 1 31/35

UM1703 Bill of materials

35


R111 22k Any

R112 51k Any

R115 2k Any

R63, R76, R84, R114 2.2k Any

R70,R77,R85,R94 5.6k Any

R60,R73,R81 680 Any

TP1,TP2,TP3,TP4,TP5,TP6,TP7,TP13,TP14,TP17,TP18,TP

19,TP20,TP21,TP22Vero Technologies 20-2137

D7,D8,D9,D10 STTH1R04U STM STTH1R04U

D12 STTH1L06A STM STTH1L06A

D14 1N4148WT Fairchild 1N4148WT

D16 GREEN LED AVAG HSMG-C170

D23 STPS1150MF STM STPS1150MF

D24 STPS1L60MF STM STPS1L60MF

F1 FUSE Holly 5RF020HK

J1 MOTOR_CONNECTOR Tyco Electronics 3-1761603-1

J2 STRIPLINE1X3 Kontek 4720302140400

Jumper RS

J6 MOTOR Phoenix MSTBA 2.5/ 3-G-5.08

MOTOR Phoenix MSTB 2.5/ 3-ST-5.08

J7 AC MAIN Phoenix MSTBA 2.5/ 2-G-5.08

J8,J12 DC BUS/15V ext Phoenix MSTBA 2.5/ 2-G-5.08

J9,J10 MOUNTING HOLE Harwin H3161-01

J11 JUMPER Any

Insulated Jumper Blue Harwin D3086-97

AC MAIN/DC BUS Phoenix MSTBA 2.5/ 2-G-5.08

NTC1 NTC Epcos B57621C103J62

NTC2 NTC Epcos B57235S509M

T2Transformer 450-500uH

325mWMagneticaE. Rossoni

Magnetica:2217.0003E. Rossoni: ERL5402-01

U2 STGIPN3H60A STM STGIPN3H60A

U3 LD1117S33TR STM LD1117S33TR

Table 6. Bill of materials (continued)

Bill of materials UM1703

32/35 DocID025649 Rev 1


U10 TSV994 STM TSV994IPT

U11 TS374 STM TS374CDT

U12 VIPer06LS STM VIPer06LS

Phoenix MSTB 2.5/2-ST-5.08

Phoenix MSTB 2.5/2-ST-5.08

Screw M3-20 mm

Washer M3

Screw nut M3

Nylon spacer M3 20mm

Plastic bag

Table 6. Bill of materials (continued)

DocID025649 Rev 1 33/35

UM1703 References

35

13 References

• STGIPN3H60A datasheet

• VIPer06L datasheet

• TSV994 datasheet

• TS374 datasheet

• http://www.st.com/mcu/ web site, which is dedicated to the complete STMicroelectronics microcontroller portfolio.

• Magnetica S.r.l

• Elettronica Rossoni

Revision history UM1703

34/35 DocID025649 Rev 1

14 Revision history

Table 7. Document revision history

Date Revision Changes

03-Jun-2014 1 Initial release.

DocID025649 Rev 1 35/35

UM1703

35

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3-phase high voltage inverter power board for foc …...the power block, based on the high voltage...

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