VOLTAGE TYPE INVERTER AND THAT CONTROL METHOD

摘要

A voltage-type inverter device includes a 1/2 V(DC) detecting circuit (31) for detecting a voltage between one end of a DC power supply (3) and an output from an inverter circuit (4); a voltage command value setting means (29) for commanding an output voltage from the inverter circuit; a first arithmetic means (32) for receiving the voltage command from the voltage command value setting means (29) and a detection voltage from the 1/2 V (DC) detection circuit (31) to produce an error voltage; a second arithmetic means (33) for receiving the error voltage from the first arithmetic means (32) and a voltage command value from the voltage command value setting means (29) to produce a voltage corrected command value; and a PWM signal generator (12) for receiving the voltage corrected command value from the second arithmetic means (33) and a frequency command value commanding a frequency command value from the inverter circuit to create a PWM signal for driving the inverter circuit.