| 摘要 |
<P>PROBLEM TO BE SOLVED: To obtain a power supply regenerative converter, capable of performing stable regenerative operation, even when supply voltage distortion is mixed in input power supply. <P>SOLUTION: The power supply regenerative converter includes a smoothing capacitor 21, regenerating switching elements S1 to S6 that carry out power regenerative operation on input power supply 3, an input voltage detection unit 6 that detects the line voltage or phase voltage of the input power supply 3, a reference voltage detection unit 35 that detects an input supply voltage from an output signal of the input voltage detection unit 6, a base drive signal generation unit 7 that generates a base drive signal used for on/off control of the regenerating switching elements S1 to S6 based on an output signal of the input voltage detection unit 6, a distortion component extraction unit 10 that extracts only a supply voltage distortion component from an output signal of the input voltage detection unit 6, and a base drive signal output unit 9 that outputs a base drive signal to the base terminals of the regenerating switching elements S1 to S6 based on an output signal of the base drive signal generation unit 7 and an output signal of the distortion component extraction unit 10. <P>COPYRIGHT: (C)2011,JPO&INPIT |
