yaskawa mechatronics solutions high performance inverter with advanced vector control varispeed g7
TRANSCRIPT
YASKAWA Mechatronics Solutions
High Performance InverterHigh Performance Inverterwith with
Advanced Vector ControlAdvanced Vector Control
Varispeed G7Varispeed G7
YASKAWA Mechatronics SolutionsVarispeed G7Varispeed G7
• Maintain market leader position byintroducing something new
• Global specification – World wide usage
• Gentle to environment
• Solution to common 400V class inverterproblems
• Maximum control performance
• Wide application field
• User friendly
• Easily adaptable to users demands
Main Design IntentionsMain Design Intentions
YASKAWA Mechatronics SolutionsVarispeed G7Varispeed G7 YASKAWA Mechatronics SolutionsVarispeed G7 – 3-Level ControlVarispeed G7 – 3-Level Control
Main Features:
• Reduced surge voltages
• Reduced bearing corrosion due to low bearing currents
• Reduced electrical noise
• Reduced audible noise
• Reduced leakage currents
Worlds First 400V 3-Level Control InverterWorlds First 400V 3-Level Control Inverter
YASKAWA Mechatronics SolutionsVarispeed G7Varispeed G7
How The 3-Level Method Works:How The 3-Level Method Works:
Tr1
Tr2
Tr3
Tr4
V P N
P
N
Motor
+ -
VP N
2
VPN
2
VPN :DC bus voltage
One phase output circuit
Tr1 Tr2 Tr3 Tr4 Potential
ON ON OFF OFF P
OFF OFF ON ON N
OFF ON ON OFF 0
• Input circuit is like on conventional inverters (B6/B12 rectifier)
• DC bus voltage is split by capacitors and neutral point is stabilized with special circuit
• Three voltage levels:- Positve voltage (P)- Zero voltage (0)- Negative voltage (N)
• Result: dv/dt becomes halfed !
0
P
0 level
N
VPN
2
Varispeed G7 – 3-Level ControlVarispeed G7 – 3-Level Control
YASKAWA Mechatronics SolutionsVarispeed G7Varispeed G7
VPN /2
+
0
-
VPN /2
VPN
VPN
+
-
Cir
cuit
VPN
U V W
P
N
VPN
U V W
P
N
0
Ph
ase
Vol
tage
Lin
eV
olta
geConventional Model
[2-level Control]Varispeed G7
[3-level Control]
Varispeed G7 – 3-Level ControlVarispeed G7 – 3-Level Control
Comparison:Comparison:
YASKAWA Mechatronics SolutionsVarispeed G7Varispeed G7
Low Surge VoltagesLow Surge Voltages
0
VPN
770V peak
0
VPN
1200V peak
Conventional 2-level switching
G7 3-level switching
• Switching the half DC bus voltage reduces surge voltages
• Motor winding insulation is stressed less
• Motor lifetime is lengthened
• No problems with older, bad insulated motors anymore
Varispeed G7 – 3-Level ControlVarispeed G7 – 3-Level Control
YASKAWA Mechatronics SolutionsVarispeed G7Varispeed G7
Low Motor Bearing CurrentsLow Motor Bearing Currents
Shaft
Winding
Bearing currents
Bearing
• Reduced bearing currents
• Thus electrolytic corrosion is lowered
• Bearing lifetime is extended
Varispeed G7 – 3-Level ControlVarispeed G7 – 3-Level Control
YASKAWA Mechatronics SolutionsVarispeed G7Varispeed G7
Low Earth Leakage CurrentsLow Earth Leakage Currents
• Earth leakage currents are greatly reduced
• Effect on earth leakage circuit breakers is minimized
• No problems with long, shielded motor cables
11A
5A
Conventional 2-level switching
G7 3-level switching
Varispeed G7 – 3-Level ControlVarispeed G7 – 3-Level Control
YASKAWA Mechatronics SolutionsVarispeed G7Varispeed G7
Excellent Torque CharacteristicExcellent Torque Characteristic
0 0.3 1.5 3 10 Operation frequency (Hz)
250
200
150
100
50
Tor
que
(%)
Open Loop Vector 2
Closed Loop Vector
Output Torque
150% at 0.3Hz 150% at 0 Hz
Speed control range
1:200 1:1000
• New flux observer improves torque characteristic
Accurate Torque ControlAccurate Torque Control
• Allows precise limiting of output torque
• Protects machines and materials from damages caused by over torque
Motor speed
Load torque
Torque Ref
Varispeed G7 – High PerformanceVarispeed G7 – High Performance
YASKAWA Mechatronics SolutionsVarispeed G7Varispeed G7
Highly Improved Speed Response• Very fast response to frequency reference
changes:
Motor speedMotor speed
900 min-1
Torque referenceTorque reference
50ms
100%
960 min-1
[Vector control with PG: No load]
Motor speedMotor speed
450 min-1 8 min-1
100%Torque reference
Motor currentMotor current 8A 28A
250ms
[Vector control with PG: With load]
G5 G7
OLV 5 Hz 10 Hz
CLV 30 Hz 40 Hz
• Speed change caused by sudden load changes can be leveled out in just a few milliseconds
• Torque control in open loop vector control mode (formerly with PG only)
Varispeed G7 – High PerformanceVarispeed G7 – High Performance
YASKAWA Mechatronics SolutionsVarispeed G7Varispeed G7
New Autotuning FunctionNew Autotuning Function1. Rotating autotuning as known from G5
2. Non rotating autotuning for measuring line-to-line resistance
3. Non rotating autotuning for all motor parameters
• Motor and load have not to be uncoupled
• Highest performance on every machine type by using Vector control
• Easier and faster machine startup
IM
IM
IM
Varispeed G7 – High PerformanceVarispeed G7 – High Performance
New Speed Search FunctionNew Speed Search Function
• Very soft speed search in both directions
• Shorter recovery time after momentary power loss (halved in in-house comparison)
YASKAWA Mechatronics SolutionsVarispeed G7Varispeed G7Varispeed G7 – Easy To UseVarispeed G7 – Easy To Use
Full Text OperatorFull Text Operator
• 5 lines illuminated LCD display
• 7 languages
• Easy menu structure
• Verify function to detect modified constants
• Can be used as Copy-Unit
• RJ45 connector for easy external usage
YASKAWA Mechatronics SolutionsVarispeed G7Varispeed G7
• Easy cooling fan replacement
• Cooling fan operating time monitor as maintenance indicator
• Fan On/Off control extends cooling fan life time
Varispeed G7 – Easy To UseVarispeed G7 – Easy To Use
Easy maintenance and inspectionEasy maintenance and inspection
• Terminal board can be removed easily
• Fast replacement without removing the control circuit wiring
YASKAWA Mechatronics SolutionsVarispeed G7Varispeed G7
Effect of Energy SavingsEffect of Energy SavingsEffect of Energy SavingsEffect of Energy Savings
Efficiency with EnergyEfficiency with Energy Saving ControlSaving Control
Load (%)Load (%)
Mot
or E
ffic
ien
cy
Mot
or E
ffic
ien
cy
(%)
(%)
00
100100
5050
5050 100100
Efficiency Efficiency with Standard with Standard Operation(60Hz)Operation(60Hz)
Energy Saving ControlEnergy Saving Control
• Achieves highest efficiency for any application
• Saves energy costs
• In V/f and Vector control modes
Varispeed G7 – Gentle To EnvironmentVarispeed G7 – Gentle To Environment
Harmonics Current ReductionHarmonics Current Reduction
• Models up from 18.5kW have included DC choke as standard (optional for smaller units)
• 12 pulse input with special input transformer for models up from 18.5 kW
YASKAWA Mechatronics SolutionsVarispeed G7Varispeed G7
Global Specification
Varispeed G7 – Global SpecificationVarispeed G7 – Global SpecificationVarious Power supplyVarious Power supply
200V class 200V to 240V, 3 phase, 50/60 Hz
400V class 380V to 480V, 3 phase, 50/60 Hz
Power supply voltage tolerance +10 %, -15 %
DC power supply possible via DC bus terminals
Global StandardsGlobal Standards• UL and cUL• CE
Global Field Bus SupportGlobal Field Bus Support• MEMOBUS with RS422/485
as standard• Device Net• Profibus-DP• Interbus-S• CC-Link• CANopen• ControlNet• LONworks
LISTEDUSC ®
ULISTED
USC ®U
MEMOBUS(As standard)DeviceNetProfibus-DPInterBus-S *CC-LinkCANopen *ControlNet *LONworks *
Option card for communication
Fie
l d N
e tw
o rk
s
YASKAWA Mechatronics SolutionsVarispeed G7Varispeed G7
General Features
Varispeed G7 – General FeaturesVarispeed G7 – General Features
Capacity Range 200V class: 0.4 to 110 kW400V class: 0.4 to 300 kW
DC Reactor 0.4 to 15 kW: optional18.5 to 300 kW: standard
12-pulse Input 0.4 to 15 kW: not available18.5 to 300 kW: available ( a 3-winding transformer is needed)
Braking Chopper 0.4 to 15kW: included18.5 to 300kW: optional (external CDBR unit has to be used)
Enclosures 0.4 to 15 kW: IP20 (NEMA 1)18.5 to 300kW: IP00, IP20 (NEMA 1) as option (not for 2090, 2110, 4185, 4220, 4300 units)
Digital Inputs Forward Run, Reverse Run, 10 multifunction digital inputs, NPN/PNP selectable
Digital Outputs 1 fault contact (changeover contact), 2 multifunction open collector outputs, 3 multifunction contactor outputs
Analogue Inputs 1 frequency reference input (-10 to +10V), 2 multifunction inputs (1x –10 to +10V, 1x –10 to +10V/4-20mA selectable)
Analogue Outputs 2 multifunction outputs (-10 to +10V/4-20mA selectable)
Pulse Train Input 1 multifunction pulse train input (0 to 32kHz)
Pulse Train Output 1 multifunction pulse train output (o to 32kHz)
RS-422/485 standard, MEMOBUS protocol
YASKAWA Mechatronics SolutionsVarispeed G7Varispeed G7
General Features
Varispeed G7 – General FeaturesVarispeed G7 – General Features
Control Method Sine wave PWMV/F, V/f with PG, Open Loop Vector 1 and 2, Closed Loop Vector
Starting Torque 150% at 0.3Hz in OLV2, 150% at 0.0Hz in CLV
Speed Control Range 1:200 in OLV2, 1:1000 in CLV
Speed Control Accuracy ± 0.2% in OLV 1 and 2, ± 0.02% in CLV
Torque Accuracy ± 5%
Frequency Control Range 0.0 to 400Hz
Overload Capability 150% rated output for 1 minute, 200% for 0.5 sec
Braking Torque Approx. 20% (approx. 125% with braking resistor)Build in braking chopper for models of 15kW and below
Main Control Functions Momentary power loss restart, Speed search, Over-/undertorque detection, 17-step speed reference, 3 Autotuning methods, Cooling fan On/Off control, Slip Compensation, Torque compensation, Jump Frequency, HSB high slip braking, PID control (with PID sleep and soft start function), Energy saving control, MEMOBUS communications, Fault retry, Torque control, Constant copy function, etc.
Protective Functions Motor overload protection, Inverter overload/overcurrent protection, Over-/undervoltage detection, Cooling fin overheat detection, Stall prevention, Ground fault detection, Phase loss detection, Momentary power loss detection, etc.
YASKAWA Mechatronics SolutionsVarispeed G7Varispeed G7Varispeed G7 – Easy To Make ExclusiveVarispeed G7 – Easy To Make Exclusive
• DriveWorksEZ makes it possible to develop application specified functions very easily
• Graphical block based programming (much easier than CASE)
• Programming possible using operator keypad or PC configuration tool
• Huge application software will be available (e.g. winder, crane, etc.)
Software Tool – DriveWorksEZSoftware Tool – DriveWorksEZ
YASKAWA Mechatronics SolutionsVarispeed G7Varispeed G7
• With G7 Yaskawa again plays the role of a forerunner in drive market by introducing 3-Level technology to 400V inverter class
• G7 meets global specifications
• G7 has low effect on environment (e.g. peripheral devices)
• G7 solves common 400V class inverterproblems (e.g. leakage currents etc.)
• G7 offers maximum control performance
• G7 is user friendly and easy to handle
• G7 is easily adaptable to specific machine requirements using DriveWorksEZ software
• G7 covers all fields, from low up to high performance application
Varispeed G7 – The SolutionVarispeed G7 – The Solution
SummarySummary