Electric power conversion systems – Current conversion – With means to introduce or eliminate frequency components
Patent
1990-01-30
1990-11-06
Stephan, Steven L.
Electric power conversion systems
Current conversion
With means to introduce or eliminate frequency components
363 56, 363 80, 363 98, 363132, H02M 112
Patent
active
049690795
ABSTRACT:
A corrective device for an inverter output voltage error in which a current sensor is connected in series with the output of an inverter, the polarity of current detected by the current sensor is discriminated by a polarity decision current, a value corresponding to an input D.C. voltage is found by a D.C. voltage sensor, a signal with the polarity of the value inverted according to the discriminated result delivered from the polarity decision current is generted by a polarity inverter circuit, and the signal is applied as a correction signal to the PWM (pulse-width modulation) circuit of the inverter so as to correct the output voltage error.
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Sekino et al, "Inverter Output Voltage Waveform Closed-Loop Control Technique", INTELEC 83, Oct., 1983.
Kawai Joji
Kiriyama Mitsuo
Mitsubishi Denki & Kabushiki Kaisha
Stephan Steven L.
Sterrett Jeffrey
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