| 摘要 |
PURPOSE: A power supply apparatus is provided to regularly maintain a DC voltage by using charged energy of a capacitor of a DC link part and an inductor connected to a three phase power part. CONSTITUTION: A power supply apparatus includes a power part(21), a rectifying part(23), a DC link part(24), a switch part(26), and a control part(27). The power part supplies a three phase power source. The rectifying part is connected to the three phase power. The rectifying part rectifies a power of each phase, and supplies a DC power. The DC link part smoothes each phase power rectified in the rectifying part. The switch part is connected between the power part and the DC link part. The switch part controls a current supplied to the DC link part through a switching operation. The control part controls the switching operation.
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