Herbert N Epp

US Patent:

41625250, Jul 24, 1979

Filed:

Mar 30, 1977

Appl. No.:

5/782659

Inventors:

Herbert N. Epp - Palos Verdes Peninsula CA

Assignee:

Hughes Aircraft Company - Culver City CA

International Classification:

H02M 3335

US Classification:

363 71

Abstract:

A power system provides a duty cycle modulated high frequency carrier signal to an inductive load with positive and negative buses. During the inductive energy discharge period the energy stored in the inductive load causes a reversal in the polarity of the inductor terminal and tends to drive the new polarity towards infinity. Thus, the magnitude of one of the buses may be increased as the result of duty cycle modulation. First and second inverters are coupled in parallel across the positive and negative buses. First and second series coupled capacitors are also connected in parallel with the inverters. The power inverter senses the increased voltage on the second bus as a result of the inductive energy discharge and transfers that energy back to the first bus. Power may thus be sensed, converted in form, and transferred from one bus to another while conserving 90% of the energy which would otherwise be wasted.