| 摘要 |
PROBLEM TO BE SOLVED: To provide a power converter exhibiting excellent overload capacity in which power can be regenerated, voltage utilization rate of the converter is high, maximum interruption current of a switching element is low, and economical power conversion can be performed with high efficiency and high power factor. SOLUTION: The power converter comprises a power diode rectifier having an AC terminal connected with an AC power supply through a transformer, a power converter having an AC terminal connected with the AC terminal of the power diode rectifier through an AC reactor, a DC smoothing capacitor connected between the power converter and the common DC terminal of the power diode rectifier, and a DC voltage control means for controlling a DC voltage applied to the DC smoothing capacitor by operating the power converter in a fixed pulse pattern and regulating the phase angle of the AC terminal voltage of the power converter to the AC power supply voltage. COPYRIGHT: (C)2007,JPO&INPIT
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