| 摘要 |
PURPOSE:To secure reliability, by a method wherein a DC switch and a capacitor filter on the side of high voltage are removed and high-speed interception is effected on the side of low voltage. CONSTITUTION:An inverter 7 is formed by a GTO thyristor 2 and an insulating transformer 3 while an output, rectified by rectifiers 4, 5 through full-wave rectification, is applied in multiple stages to obtain the high-voltage output of DC. Short-circuit current is limited by reactors 6. The GTO thyristors 2 are operated by a pulse, generated by a pulse generator 8, and the insulating transformer 3 boosts an output voltage to 4 times whereby full-wave rectified waveform is obtained as the output voltage of both terminals of the rectifier 5. Further, a switching element is operated while shifting the phase thereof by 180/n deg.. According to this method, the phase of ripples, accompanying the commutation of the inverter 7, is shifted by 180/n deg. in the same manner, therefore, the ripples may be reduced to 1/n even when a smoothing filter is not employed for the output.
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