Control apparatus for inverter

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364574, 363 41, 307359, 318811, G05F 110, H02P 900

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active

051074389

ABSTRACT:
A control apparatus for an inverter including a filter consisting of a reactor and a capacitor, connected to the output terminal thereof is operative to compute such a voltage correction value to cancel a voltage difference between the reference voltage and the output voltage to add, to the voltage correction value, a value obtained by delaying the voltage correction value by one period of the inverter output voltage to prepare a reference correction value to correct the reference voltage by the reference correction value, thus to prepare a volatge command for control of the inverter. The voltage control based on the reference correction value is carried out in a feed-forward manner, thus making it possible to effectively eliminate voltage distortion appearing periodically in synchronization with the output voltage.

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T. Haneyoshi et al., "Waveform Compensation of PWM Inverter With Cyclic Fluctuating Loads", IEEE, vol. 24, No. 4, Jul./Aug., 1988, pp. 582-589.
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Kerkman et al., "Voltage Controlled Current Regulated PWM Inverters," Conference Record of the 1988 IEEE Industry Applications Society Annual Meeting, Oct. 1988, pp. 381-387.
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