Patent ID: 6144191
Filing Date: 2000-11-07
Classification: H02J,H02M,Y02E

Abstract:
A regulator for regulating at least one of voltage, current or power to an electrical load, said regulator comprising:a transformer series connected between a power source and said electrical load;a bypass switch connected in parallel with said series connected transformer, said bypass switch comprising a back-to-back pair of silicon controlled rectifiers (SCRs);a pulse width modulated (PWM) inverter coupled to said series connected transformer for generating a voltage to be applied to said series connected transformer; anda controller for transitioning said regulator from a normal mode through a commutate mode to an active mode, wherein said bypass switch is active in said normal mode and inactive in said active mode, said inverter providing a voltage to said series connected transformer in said active mode, and wherein said controller and said PWM inverter comprise means for actively forcing said SCR off when said device is in said commutate mode.