| 摘要 |
PURPOSE:To accelerate a response to the transient variation of the output voltage by comparing and controlling the output voltage of an inverter with a reference waveform as the sinusoidal waveform. CONSTITUTION:The sinusoidal wave AC voltage of an inverter is led through a full-wave rectifier 20 to a subtractor 22, which produces a difference signal from the reference sinusoidal half wave voltage of a sinusoidal half wave generator 21. This signal is inputted through an error amplifier 23 to a PWM modulator 24, which pulse-width-modulates the triangular-shaped carrier from a carrier generator 25. A logic circuit 26 outputs a control signal for driving an inverter converter on the basis of the output of the modulator 24 and the output of the generator 21. |
