Inverter control device

Details Inverter control device Inverter control device

1998-02-17

1999-02-16

Berhane, Adolf

Electric power conversion systems

Current conversion

With condition responsive means to control the output...

363 41, 363131, H02M 7217

Patent

active

058727108

ABSTRACT:
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.

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