| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a power conversion device that prevents a wrong stop due to wrong voltage detection. <P>SOLUTION: The power conversion device (10) having a converter circuit (11), a DC link section (12) having a capacitor (14) connected in parallel with an output of the converter circuit (11) and outputting a pulsating DC voltage, and an inverter circuit (13) includes: a voltage detection section (21) for detecting a DC voltage (Vdc) of the DC link section (12) at least once per carrier of a switching signal; a determination section (41) for determining whether or not the DC voltage (Vdc) is an overvoltage according to a plurality of detection values; and a stop section (42) for stopping the inverter circuit (13) if the determination section (41) determines that the DC voltage (Vdc) is an overvoltage. <P>COPYRIGHT: (C)2012,JPO&INPIT |
