초록 ▼

A current detecting circuit (19) detects an output voltage of an inverter, a voltage error computing unit (21) computes an voltage error between the output voltage and a voltage command value, a deadtime compensation amount storage unit (18) stores a relationship between the voltage error, and an ou

A current detecting circuit (19) detects an output voltage of an inverter, a voltage error computing unit (21) computes an voltage error between the output voltage and a voltage command value, a deadtime compensation amount storage unit (18) stores a relationship between the voltage error, and an output current value detected by a current detecting circuit (20). A deadtime compensation computing unit (17) computes a deadtime compensation amount from the deadtime compensation amount storage unit (18) according to a current command value, and an adder (16) adds the deadtime compensation amount and the voltage command value so as to obtain the added correcting voltage command value. The operation of the inverter is controlled on the basis of the computed correcting voltage command value which enables inverter control devices to accurately control output current due by accurate correction of the output voltage.

대표청구항 ▼

[ I claim:] [1.] An inverter control device for controlling an inverter by producing a voltage command value on the basis of an error between a given current command value and an output current of said inverter and performing pulse-width-modulation on the basis of said voltage command value, said in

[ I claim:] [1.] An inverter control device for controlling an inverter by producing a voltage command value on the basis of an error between a given current command value and an output current of said inverter and performing pulse-width-modulation on the basis of said voltage command value, said inverter control device comprising:voltage detecting value means for detecting an output voltage value of said inverter;output voltage error detecting means for finding a voltage error between said voltage command value and said output voltage value;storage means for storing a relationship between said current detecting value and said voltage error; and deadtime compensation means for finding said voltage error stored in said storage means on the basis of said current detecting value and correcting said voltage command value.