POWER ELECTRONICS AND MOTOR DRIVES -TECHNOLOGY STATUS AND TRENDS TUTORIAL IEEE IECON 2005 RALEIGH, NC November 6, :00 PM – 5:00 PM, Sunday By Dr. Bimal K. Bose, Life Fellow, IEEE Department of Electrical Engineering 309 Ferris Hall The University of Tennessee Knoxville, TN Tel: (865) Fax: (865) (or Fig,1

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POWER ELECTRONICS APPLICATIONS Fig.4

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IGBT SCENARIO FAST EVOLUTION SINCE INTRODUCTION IN 1983 SIMPLE STRUCTURE – SIMPLE PROCESSING ASYMMETRIC AND SYMMETRIC BLOCKING DEVICES “SMART POWER” CAPABILITY COMMERCIAL DEVICE – 3500 V, 1200 A, (6.5 kV, 10 kV DEVICE UNDER TEST) INTELLIGENT POWER MODULES – UP TO 1200V, 800 A (250 HP MOTOR) SQUARE SOA – ADVANTAGES AND DISADVANTAGES OF SNUBBERLESS OPERATION FOURTH GENERATION DEVICE WITH TRENCH GATE (50% LESS DROP) PWM SWITCHING FREQUENCY – 1.0 kHz (HIGH POWER_ 1.00 MW AND HIGHER POWER IN 3-LEVEL INVERTER Fig.14

IGCT SCENARIO RECENTLY INTRODUCED DEVICE BY ABB (1996) CURRENT-CONTROLLED DEVICE (HARD-DRIVEN GTO WITH TURN-OFF CURRENT GAIN = 1) GATE DRIVER IS BUILT ON MODULE MONOLITHIC ANTI-PARALLEL DIODE COMMERCIAL DEVICE – 6.5 kV, 4000 A (10 kV UNDER TEST) ASYMMETRIC OR SYMMETRIC BLOCKING DEVICE SERIES – PARALLEL OPERRATION POSSIBLE SNUBBER OR SNUBBERLESS OPERATION LOWER THAN IGBT CONDUCTION DROP – 1.0 kH FREQUENCY VERY PROMISING DEVICE FOR HIGH POWER Fig.15

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Fig.20 PROGRESSION OF CURRENT-FED CONVERTER SYSTEMS FOR AC DRIVES

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ADVANCES AND TRENDS IN CONVERTERS POWER QUALITY AND LAGGING PF PROBLEMS ARE MAKING PHASE- CONTROLLED CONVERTERS OBSOLETE - PROMOTING PWM TYPE CONVERTERS ON LINE-SIDE VOLTAGE-FED CONVERTERS ARE SUPERIOR TO CURRENT-FED CONVERTERS IN OVERALL FIGURE-OF-MERIT CONSIDERATIONS DOUBLE-SIDED VOLTAGE-FED GTO/IGBT/IGCT 3-LEVEL PWM CONVERTERS ARE REPLACING HIGH POWER PHASE-CONTROLLED CYCLOCONVERTERS MULTI-LEVEL MULTI-STEPPED CONVERTERS WILL BE WIDELY ACCEPTED IN UTILITY SYSTEM SPACE VECTOR PWM IS FINDING WIDE ACCEPTANCE SOFT-SWITCHED CONVERTERS FOR MOTOR DRIVES DO NOT SHOW ANY FUTURE PROMISE CONVERTER TECHNOLOGY HAS NEARLY REACHED THE SATURATION STAGE FUTURE EMPHASIS WILL BE ON INTEGRATED PACKAGING AND DESIGN AUTOMATION Fig.27

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