| 摘要 |
PROBLEM TO BE SOLVED: To provide a polyphase step-up rectifier circuit wherein direct-current voltage with a high step-up multiple can be efficiently outputted even with an appropriate number of used devices and simple circuitry by boosting the voltage of each line voltage or each phase voltage of a polyphase alternating-current power supply and connecting them in series. SOLUTION: The polyphase step-up rectifier circuit includes a three-phase alternating-current power supply G and three step-up rectifier blocks 10, 20, 30 independent of one another. The step-up rectifier blocks are connected to the three-phase alternating-current power supply G and convert each line voltage or each phase voltage into direct current and boosts the voltage when each line voltage Vab, Vbc, Vca or each phase voltage of the three-phase alternating-current power supply is applied. The step-up rectifier blocks are connected in series to output direct-current voltage higher than the output voltages V10, V20, V30 from the step-up rectifier blocks. COPYRIGHT: (C)2010,JPO&INPIT
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