Development of gate turnoff thyristors
- Powerex Corp., Inc., Youngwood, PA (USA)
The major objective of this project was to develop high voltage (2500--4500 volt), high current (1000 ampere) gate-turnoff devices suitable for electric utility applications such as drives, static VAR compensators, and HVDC. The project has been successfully completed. Devices in pilot line quantities with blocking voltages of 2500 and 4500 volts in both directions have demonstrated turnoff capability of 1000 amperes or higher. Other performance values, including the turn-on and turnoff times, the di/dt and dv/dt capabilities, and the tail time were found to be comparable to those of commercially available devices. Energy loss in the new equipment occurred mainly during the period after the device restored blocking capability. It was concluded that tail current flowing through the device at high voltage generates nearly all the energy loss. Thus, reducing device energy loss requires control of the tail current by reducing the minority carrier lifetime in the base region. 4 figs., 2 tabs.
- Research Organization:
- Electric Power Research Inst., Palo Alto, CA (USA); Powerex Corp., Inc., Youngwood, PA (USA)
- Sponsoring Organization:
- EPRI
- OSTI ID:
- 6667959
- Report Number(s):
- EPRI-EL-6920
- Country of Publication:
- United States
- Language:
- English
Similar Records
Light-triggered thyristors for electric power systems (Phase 2). Interim report
Series connection of gate-turnoff thyristors: Final report
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COMPARATIVE EVALUATIONS
CONTROL
CURRENT DENSITY
DC SYSTEMS
EFFICIENCY
ELECTRIC POTENTIAL
ELECTRIC UTILITIES
ELECTRICAL EQUIPMENT
ELECTRICAL PROPERTIES
ELECTRONIC CIRCUITS
ENERGY EFFICIENCY
ENERGY SYSTEMS
EQUIPMENT
FABRICATION
HVDC SYSTEMS
INVERTERS
LOSSES
MEASURING METHODS
PERFORMANCE TESTING
PHYSICAL PROPERTIES
POWER SYSTEMS
PROCESS CONTROL
PUBLIC UTILITIES
SEMICONDUCTOR DEVICES
SPECIFICATIONS
SWITCHING CIRCUITS
TESTING
THYRISTORS
WAVE FORMS