| 摘要 |
A small, lightweight and inexpensive power converter capable of regenerative operation and of direct transformerless coupling with an AC system, a motor drive comprising that power converter, and a BTB system and a system linking inverter system comprising that power converter. The power converter is provided with a converter cell comprising a first AC/DC converter performing mutual conversion between single phase AC power and DC power, a second AC/DC converter connected with the DC side of the first AC/DC converter and performing mutual conversion between single phase AC power and DC power, a third AC/DC converter performing mutual conversion between single phase AC power and DC power, and a high frequency transformer connected between the A C side of the second AC/DC converter and the AC side of the third AC/DC converter. In case of an AC input and DC output power converter 1, a fourth AC/DC converter connected with the DC side of the third AC/DC converter and performing mutual conversion between single phase AC power and DC power is provided furthermore. |
