Inverter-drive controlling apparatus

Details Inverter-drive controlling apparatus Inverter-drive controlling apparatus

1985-01-17

1986-05-06

Wong, Peter S.

Electric power conversion systems

Current conversion

With means to introduce or eliminate frequency components

363 98, 364131, 364480, 364483, 318811, H02M 114

Patent

active

045876053

ABSTRACT:
In a controlling apparatus for a simulated sinusoidal wave of unequal width PWM inverter, wherein PWM signal comprises a data region and a HALT region in each of carrier period timer, the carrier period timer T.sub.0 and data unit timer T.sub.2 are controlled by each other independent digital values by each other independent microcomputers (5, 6) or by use of each other different timers (10, 11), and the data unit timer T.sub.2 is controlled by an output of a power source voltage fluctuation detector (18), thereby to provide a constant voltage-frequency characteristic even at voltage fluctuation.

REFERENCES:
patent: 4166247 (1979-08-01), Miyazawa
patent: 4290108 (1981-09-01), Woehrle et al.
patent: 4337429 (1982-06-01), Stuart
patent: 4348734 (1982-09-01), Dougherty
patent: 4387421 (1983-06-01), Zach et al.
patent: 4447786 (1984-05-01), Saar et al.
patent: 4458194 (1984-07-01), Geppert et al.
patent: 4466070 (1984-08-01), Claussen
patent: 4520437 (1985-05-01), Boettcher, Jr. et al.

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