Power conversion apparatus, control method and uninterruptible p

Details Power conversion apparatus, control method and uninterruptible p Power conversion apparatus, control method and uninterruptible p

1997-06-24

1999-03-30

Nguyen, Matthew

Electric power conversion systems

Current conversion

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

H02M 545

Patent

active

058896619

ABSTRACT:
A power conversion apparatus and its control method is disclosed in which a main circuit and its control circuit are simplified by allowing part of the main circuit to be shared by a converter section and an inverter section. The power conversion apparatus comprises a converter section 120 and an inverter section 130, each having upper and lower arm switch sections, and a common section 110 also having upper and lower arm switch sections. One phase of an AC input power terminal is connected to one phase of an AC output power terminal. The common phase is also connected to a connection point 1RU of the upper and lower arm switch sections of the common section. The remaining phases of the AC input terminals are connected to connecting points of upper and lower arm switch sections of the converter section, and the remaining phases of the AC output terminals are connected to connection points of upper and lower arm switch sections of the inverter section. The common section and the converter section cooperate to convert the AC input power into a DC power, and the common section and the inverter section cooperate to convert the DC power into an AC output power.

REFERENCES:
patent: 5111373 (1992-05-01), Higaki
patent: 5654882 (1997-08-01), Kanazawa et al.

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