Inverters having a transformer-coupled commutating circuit

Details Inverters having a transformer-coupled commutating circuit Inverters having a transformer-coupled commutating circuit

1976-09-17

1977-11-29

Beha, Jr., William H.

Electric power conversion systems

Current conversion

Including automatic or integral protection means

363135, H02M 7515

Patent

active

040607577

ABSTRACT:
In force-commutated single phase and polyphase thyristor inverters, a single commutating pulse generator produces commutating impulses for all the commutating thyristors which are individually transformer-coupled to the power circuit to turn off a selected load thyristor. Coasting thyristors to provide zero output voltage levels are also commutated without additional components. The basic commutating pulse generator has one capacitor with provision for recovering trapped energy, and pulse waveshaping and two-level overcurrent capability can be added economically.

REFERENCES:
patent: RE26342 (1968-02-01), Bedford
patent: 3325716 (1967-06-01), Gomi
patent: 3469169 (1969-09-01), Schlabach et al.
patent: 3487278 (1969-12-01), Turnbull et al.
patent: 3916290 (1975-10-01), Rao et al.
IEEE Transactions on Industry & General Applications, vol. 1GA-4, No. 1, pp. 104-110, Jan./Feb., 1968.

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