Power converting device

Details Power converting device Power converting device

2006-02-23

2009-02-03

Riley, Shawn (Department: 2838)

Electrical transmission or interconnection systems

Plural supply circuits or sources

Load current control

C307S082000, C307S105000

Reexamination Certificate

active

07485987

ABSTRACT:
A power converting device includes a single-phase multiplex converter used as an active filter and a control device. The single-phase multiplex converter includes multiple single-phase inverters connected in series at AC output sides. Each of the single-phase inverters converts DC power fed from a DC power supply into AC power. The control device includes hysteresis comparators and controls output voltage of the single-phase multiplex converter by gradational output voltage control, based on the sum of selectively combined output voltages of the multiple single-phase inverters. The control device controls the single-phase multiplex converter so that an output current follows a harmonic compensation reference current, canceling harmonics leaking from a load to which the power converting device is connected.

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Introduction To Power Electronics, Second Edition, Sakae Yamamura and Eiichi Ohno, pp. 264-269, Published by Ohmusha, Ltd.

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