DC-AC converter, and method for supplying AC power

Details DC-AC converter, and method for supplying AC power DC-AC converter, and method for supplying AC power

2006-05-16

2006-05-16

Vu, Bao Q. (Department: 2838)

Electric power conversion systems

Current conversion

Including d.c.-a.c.-d.c. converter

C363S026000, C363S056060, C363S133000

Reexamination Certificate

active

07046526

ABSTRACT:
First and second semiconductor switches which are activated alternately are provided between ends of a primary winding and a common potential point, wherein a DC power supply voltage is supplied to a center tap. An electric current flowing into a load is fed back to thereby subject the semiconductor switches to PWM control. Series circuits consisting of capacitors and semiconductor switches are connected between the center tap of the primary winding and the ends of the same. The semiconductor switches are activated in synchronism with the first and second semiconductor switches, thereby preventing occurrence of an anomalous high voltage, which would otherwise be caused at the time of switching operation.

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