| 摘要 |
PURPOSE:To effectively stabilize the operation of a high frequency inverter and to efficiently use power source condensers in power inverters connected in parallel with each other by forming the power inverters equivalent as seen from a DC power source side in the structure and disposition. CONSTITUTION:Power inverters INV1, INV2 connected in parallel with each other are connected at the DC side to a condenser circuit which is divided into power condensers CS1, CS2 and CS3, CS4. Reverse-current preventive diodes D1- D4 are provided in a forward direction from a rectifier REC at both ends of the series circuit of the condensers CS1, CS2. A cross current between the condensers CS1-CS4 is prevented by the diodes D1-D4 with this configuration, only a load current is flowed to the condensers CS1-CS4, and an electric power corresponding to the supplied power can be supplemented from the rectifier REC side. |
