Zero-voltage-switched, three-phase PWM rectifier inverter circui

Details Zero-voltage-switched, three-phase PWM rectifier inverter circui Zero-voltage-switched, three-phase PWM rectifier inverter circui

1993-09-17

1995-07-11

Young, Brian K.

Electric power conversion systems

Current conversion

Using semiconductor-type converter

363 87, 363 98, 363127, 363132, H02M 7521

Patent

active

054326958

ABSTRACT:
A novel switching rectifier circuit that combines the conventional three-phase, 6-stepped PWM rectifier/inverter circuit with a simple, low-power switch commutation circuit to provide zero-voltage turn-on for the switches, and soft turn-off for the diodes. The main features of the new circuit include elimination of switching losses on the power switches and reverse recovery problems on the diodes, elimination of the need for any snubbers in the three-phase bridge, possibility of use of slower diodes in the power bridge, constant frequency operation, and no increase in component current and voltage stresses over the conventional PWM rectifier.

REFERENCES:
patent: 4502106 (1985-02-01), Glennon
patent: 4597037 (1986-06-01), Okado
patent: 5138544 (1992-08-01), Jessee
patent: 5329439 (1994-07-01), Borojevic et al.
patent: 5345375 (1994-09-01), Mohan

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