ee 353 power electronics - encon - courses
TRANSCRIPT
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B. Chowdhury 1
EE 353 Power Electronics
WS 1999
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B. Chowdhury 2
Definition
PowerGeneration
TransmissionDistribution
ElectronicsSolid state devices
circuitssignal processing
ControlSteady-state anddynamic charac of
closed loop systems
Power electronics
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B. Chowdhury 3
Power Electronics Systems
Power ProcessingUnit
Changes any electrical power input to any desired form of
voltage, current and frequency output
Powerinput
Controller
LoadPoweroutput
reference
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B. Chowdhury 4
Power Processor Example
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B. Chowdhury 5
Power Processor Eqvt. Ckt.
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B. Chowdhury 6
Waveforms
Vd
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B. Chowdhury 7
Converters
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B. Chowdhury 8
Converters, cont’d
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B. Chowdhury 9
Converters, cont’d
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B. Chowdhury 10
Converter Control Schematic Example
DSP Board Daughter Board
ADSP21062
6 Tsw, 6 bitsindicating Iload > Ith
PWM generator
Logic Circuitfor sequencing
6-bits (Il-Ir)6-bits (Iload)
FPGA
Optical outputs to24 gate drivers
(6 PLMs)18 A/Dchannels
Voltage andcurrent signals
6 Il>Ir comparatoroutputs
24 gate drivecommands
Voltages (4 AC, 2 DC)
Currents (6 filter, 6 resonant)
From: Ravisekhar Raju
“PEBB-Based Converter,” Si Power Corp.
DSP Board Daughter Board
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B. Chowdhury 11
Brief History
• 1900 - Mercury arc rectifier• 1948 - Silicon transistor (Bell Labs)• 1956 - Silicon Controlled Rectifier (Bell)• 1958 - Thyristor (General Electric)
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B. Chowdhury 12
History
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B. Chowdhury 13
The Second Revolution
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B. Chowdhury 14
Power Semiconductor devicesThe muscle for power electronic equipment
• Power diodes• Thyristors• Power bipolar junction transistor (BJT)• Power MOSFET• IGBT• Static induction transistor• MCT, GTO, MTO
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B. Chowdhury 15
Device Ratings
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B. Chowdhury 16
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B. Chowdhury 17
Power Electronics Applications
Transportation Industry• Electric Vehicles• Electric Locomotives• Electric Trucks, Buses, Construction Vehicles
Utilities• Line Transformers• Generating Systems
Manufacturing• Machinery• Power Systems
Consumers• Air Conditioners/Heat Pumps• Appliance
Medical Equipment
GovernmentNaval Systems• Ship Power Systems• New Surface Ship Power
Electronics• New Submarine Power
ElectronicsAviation Systems• "More Electric" AircraftLand Based Systems• "All Electric Tank"• "All Electric Armored
personnel Carrier"
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B. Chowdhury 18
Specific Applications
POWER SYSTEM APPLICATIONS• Intelligent Machinery Controls &
Network Simulation• Solid State Power Conditioning &
Circuit Protection• Motors, Generators, & Motor
Drives• Actuators and Actuator Drives• Energy Storage• Pulse Power Systems• Power Conversion - inverters for
renewables, HVDC• FACTS devices
CONTROL APPLICATIONS• Frequency Changes• Motor Controllers• Adjustable Speed Drives• Inverters• Rectifiers• Converters• Power Supplies• Battery Chargers• Switch Gear• Breakers
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B. Chowdhury 19
Conventional vs EV
~PowerController
BatteryBank
Electric Vehicle Powertrain
EngineDrive -train
Conventional IC Engine Powertrain
From: Chrysler presentation
on “Hybrid Electric Vehicles”
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B. Chowdhury 20
“More Electric Aircraft” - USAF
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B. Chowdhury 21
Shipboard Power System - USNavy
SCR1960’s
BJT1970’s SCR 1990’s
MCT
60 Hz 70 Hz
Size andcost
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B. Chowdhury 22
Submarine Power System - USNavy
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B. Chowdhury 23
"All Electric Armoredpersonnel Carrier” - USARMY
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B. Chowdhury 24
Power Electronic Building Blocks -ONR
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B. Chowdhury 25
PEBB-Based Power System
DC Power Distribution Bus
Power Gen Filter
AC/DC
DC/DC
Rect.& Filter
Load
Power Gen Filter
AC/DC
DC/AC
3-Ph60 HzPower Supply
Motor
DC/AC
Filter
From: Fred. C. Lee, Dusan Borojevic
“Power Electronics Building Blocks,”VPI
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B. Chowdhury 26
Applications in Power Transmission
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B. Chowdhury 27
Application - HVDC Transmission
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B. Chowdhury 28
Application - Back-to-Back Tie
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B. Chowdhury 29
Thyristor-Controlled Series Comp.
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B. Chowdhury 30
Gate Turn-Off Thyristor
Turn-onPower Supply
Holding Power Supply
Turn-offPower Supply
LogicPower Supply
Turn-onDriver
HoldingDriver
Turn-offDriver
LogicCircuits
Input Power
ON/OFF Command
Status Feedback From: R.W. De Doncker
“High Power Electronic Building Blocks(HPEBBs),” Si Power Corp. (SPCO)
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B. Chowdhury 31
New Devices/Materials
Gate driver
GTO thyristor MTO thyristorTM
Gate driver
•MTO devices use same manufacturing technology as GTOs•MTO devices reach same ratings as GTOs but offer lowerturn-off losses
N
P
N+
P+
N+ MOSFET
Tungsten
AluminumMolybdimum
Al Wirebonds
GTO Gate
MOSFET Gate
dry interface
Anode
Cathode
From: R.W. De Doncker
“High Power Electronic Building Blocks(HPEBBs),” Si Power Corp. (SPCO)
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B. Chowdhury 32
New Devices/Materials
53mm 4.5 kV MTOs MTO gate drivers
From: Ravisekhar Raju
“PEBB-Based Converter,” Si Power Corp.
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B. Chowdhury 33
New Devices/Materials
• Innovative silicon concepts and newly identifiednon-silicon materials, including silicon carbide(SiC), diamond, and Group III nitrides, promisenew generations of electronic devices operationalat much higher voltages and switchingfrequencies, resulting in high-power systems withlower cost, greater reliability, and reduced size,weight, and cooling needs.
• The market for high-power electronics is worthbillions over the next decade.
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B. Chowdhury 34
Gate Driver for IGBT Modules
PWM
MC
3315
3
12V
+
-
FLT
+15V
-5V
+15V
+15V
-5V
-5V
5
4
6
78
1
23
DC
/DC
DC
/DC
Optical Fiber
IGBT Module
l Optical Fiber Usedl DC Distributed Power Supplyl High Current Output Stage: >5Al Desaturation Protectionl Low Component Count
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B. Chowdhury 35
Optical Fiber
+12V DC
Gate Driver
IGBT Module
Gate Driver Mounted On IGBT Module
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B. Chowdhury 36
Switched Reluctance Motor
The switched reluctance motor is diagrammed as a simplified eight-pole stator and a six-pole rotor machine.Torque is developed by the tendency of a magnetic circuit to adopt a configuration of minimum reluctance (tomaximize the magnetic flux). This tendency translates into a rotation of the rotor so that its poles align with thestator's poles. These pole pairs are in turn energized sequentially from a dc source through electronic switches,thereby creating the rotating torque.
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B. Chowdhury 37
Selected Companies
• Vicor Corp., Andover, Mass.• Delco Electronics, Torrance, Calif.• Harris Semiconductor Corp., Mountaintop, PA• Halmar Robicon, Pittsburgh• ABB• Siemens AG• Motorola Inc. Semiconductor Products, Phoenix, Ariz.• International Rectifier Corp., El Segundo, CA• GE• Westinghouse• Toshiba America Electronic Components Inc., Irvine, CA
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B. Chowdhury 38
Companies, cont’d
• Mitsubishi Electric Corp.• Powerex• Emerson Motor Co., St Louis, MO• Magna Physics Division of Tridelta Industries Inc., Mentor, OH• Cutler-Hammer, Milwaukee, WI• IBM• Silicon Power Corp.• Northrup-Grumman Corp.• Analog Devices, Norwood, MA• Allen-Bradley