Charles S. Kerfoot

Ten kilowatt self-commutated resonant inverter using MOS controlled thyristors

A 50 kHz full-bridge series/parallel resonant inverter has been developed to provide a 10 kW high-voltage output from 270 V DC input power. The inverter uses MOS controlled thyristors as self commutated switches. Multilayer ceramic chip capacitors and gapped ferrite planar inductors serve as resonant elements to allow high power density. The design, computer simulation, and breadboard evaluation of the inverter are described.<<ETX>>

Optimum topology of a self-commutated resonant inverter

A 10 kW, 50 kHz resonant inverter development effort for a radar transmitter application is presented. Well-behaved and constant loads are not assumed in order to show topology function; rather, the parameters used are a real life set with variations that pose severe design problems. The tradeoffs for circuit topology selection are outlined, and the final high-power full-bridge hybrid topology is shown. An equivalent lower-power half-bridge version of the same hybrid topology is developed. The equivalence is nonobvious. Computer circuit simulations and measured data are used to show performance.<<ETX>>