| 摘要 |
PROBLEM TO BE SOLVED: To provide an inverter generating set which makes an AC output voltage of a wanted value without having a circuit to detect a DC voltage outputted from a power source supply. SOLUTION: A duty ratio for an operation of turning on and off of a switching element of an inverter circuit which is necessary to make a waveform of an AC output voltage between load connecting terminals 5u, 5v a wanted waveform is calculated as a reference duty ratio D0. A voltage correction factor Kv which is necessary to multiply it by the reference duty ratio D0 to make the average value of the voltage detected from the load terminals 5u, 5v equal to a setting value is calculated. A real duty ratio D is derived from the product of the reference duty ratio D0 by this correction factor Kv. A wanted sinusoidal AC voltage is generated between load connecting terminals by turning on and off the switching element of the inverter circuit 2 with the real duty ratio D. |
