Regenerative ac to dc converter

Details Regenerative ac to dc converter Regenerative ac to dc converter

1994-06-07

1995-09-12

Ro, Bentsu

Electricity: motive power systems

Synchronous motor systems

Hysteresis or reluctance motor systems

318376, 363 37, H02P 314, H02P 600

Patent

active

054499933

ABSTRACT:
A regenerative ac to dc convertor includes a thyristor bridge invertor and a rectifier having a dc link capacitor. A second capacitor is connected across the invertor. In a regenerative braking mode of the motor the invertor is arranged to return energy from the second capacitor to the ac supply. Circulating currents are inhibited by diodes connecting the dc link and second capacitor. A first diode is arrange to conduct from the positive terminal of the second capacitor to the positive terminal of the dc link capacitor. A second diode is arranged so that it conducts from the negative terminal of the dc link capacitor to the negative terminal of the second capacitor.

REFERENCES:
patent: 3769564 (1973-10-01), Rettig
patent: 4307332 (1981-12-01), Lorenzo et al.

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