Abstract: A high-temperature, regulated power supply uses wide band gap transistors to drive a Royer circuit. Pulses output from the Royer circuit are gated through a pulse width modulator to control the duty cycle of wide band gap transistors that drive an output transformer. The output of the transformer is rectified and filtered to provide the regulated D.C. output voltage. Regulation is accomplished by sampling the output voltage, comparing it to a reference voltage and using the difference between the output voltage and the reference voltage to control the pulse width modulator. High temperature operability is provided by using wide band gap transistors and iron or steel core transformers. This technique also provides a radiation hard assembly.

Abstract: A system and method for controlling a thermal dynamic cycle engine, such as a Stirling engine. The system includes a controller able to execute a program to alter certain aspects of the system to provide for a maximum power transfer and substantially stall free start up of the thermal dynamic cycle engine. Generally the controller is able to alter the current load to achieve a selected stroke length, pattern or temperature of a heater head of the engine. The system allows for generally stall free start-up and continuous control for maximum power (with maximum power factor) transfer from the thermal cycle engine or the associated alternator.

Abstract: A system and method for controlling a thermal dynamic cycle engine, such as a Stirling engine. The system includes a controller able to execute a program to alter certain aspects of the system to provide for a maximum power transfer and substantially stall free start up of the thermal dynamic cycle engine. Generally the controller is able to alter the current load to achieve a selected stroke length, pattern or temperature of a heater head of the engine. The system allows for generally stall free start-up and continuous control for maximum power (with maximum power factor) transfer from the thermal cycle engine or the associated alternator.