Patent ID: 8208276
Filing Date: 2012-06-26
Classification: H02J,H02M

Abstract:
1. A power conversion device provided between an AC line, and a DC positive bus, a DC negative bus and a DC neutral point bus, for converting one of DC power and AC power to the other, comprising: a first fuse having one terminal connected to said DC positive bus; a second fuse having one terminal connected to said DC negative bus; a third fuse having one terminal connected to said DC neutral point bus; a first semiconductor switching element connected between the other terminal of said first fuse and said AC line; a second semiconductor switching element connected between said AC line and the other terminal of said second fuse; an AC switch connected between said AC line and the other terminal of said third fuse; first and second diodes connected in anti-parallel to said first and second semiconductor switching elements, respectively; a first capacitor connected between the other terminals of said first and third fuses; and a second capacitor connected between the other terminals of said second and third fuses.