| 摘要 |
<p>A power conversion circuit includes a rectifier/inverter (2) connected to an AC source/sink, a chopper which controls the direct current in the rectifier/inverter and path selection means which connect the chopper to the rectifier/inverter and to the fixed polarity DC sink/source whereby power may flow in either direction between the AC and DC terminals according to which path is selected under the control of the chopper acting either as a step-up flyback converter or step-down forward converter.</p> |
