| 摘要 |
PURPOSE:To compensate the variation in the output voltage of a power converter by applying a signal proportional to the output pulse peak value of the inverter to a constant-voltage control system. CONSTITUTION:When power is interrupted during the operation with a commercial power source 1 so that a DC voltage A abruptly varies, the voltage B of a smoothing condenser 6 rises at the slope which is determined by the filter effect of smoothing reactor 6 and the condenser 6. The variation in the voltage of the condenser 6 is presented at the variation in the pulse peak value of the output voltage of an inverter 7, and the output of a pulse peak value detector 42 varies. The variation in the output of the detector 42 is applied as a signal for lowering the output voltage of the inverter 7 to a phase shifter 15. |
