Freely commutating chopper circuit

Details Freely commutating chopper circuit Freely commutating chopper circuit

1981-07-17

1984-01-03

Beha, Jr., William H.

Electric power conversion systems

Current conversion

Using semiconductor-type converter

363135, H02M 3135

Patent

active

044245580

ABSTRACT:
The invention relates to a chopper circuit with free commutation for the supply of power to a load from a source of direct current. It comprises a principal thyristor with a return diode, a series resonant circuit as the commutation circuit and a free-wheeling diode. The free-wheeling diode is parallel to the capacitor of the resonant circuit so that the coil serves both as the commutation circuit and the coil to limit variations of the current in the thyristor. The circuit is particularly suitable for use with electric traction motors.

REFERENCES:
patent: 3445752 (1969-05-01), Horvat
patent: 4135236 (1979-01-01), Mann et al.
patent: 4257092 (1981-03-01), Prines et al.

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