Inverter arcing control for a parallel-resonant circuit static f

Details Inverter arcing control for a parallel-resonant circuit static f Inverter arcing control for a parallel-resonant circuit static f

1983-10-12

1985-10-22

Wong, Peter S.

Electric power conversion systems

Current conversion

With means to introduce or eliminate frequency components

363 37, 363 98, 363136, H02P 1320, H02M 7515, H02M 118

Patent

active

045492565

ABSTRACT:
An inverter circuit with a thyristor bridge circuit, a load circuit developed as a parallel oscillating circuit connected to the bridge circuit, an impulse generating circuit for supplying ignition pulses to the bridge circuit and an arcing time regulating circuit for controlling the impulse generating circuit in accordance with the arcing time. A down-and-up integrating circuit is triggered by an ignition impulse to integrate down until a discriminator circuit produces a signal indicating zero crossover of the load current, thereafter to integrate up until a second discriminator produces a second signal indicating zero crossover of the load voltage, at which time the integrator output indicates arcing time, and is applied to the time regulating circuit to control the impulse generating circuit.

REFERENCES:
patent: 3942090 (1976-03-01), Matthes et al.
patent: 4066954 (1978-01-01), Vukasovic et al.
patent: 4330717 (1982-05-01), Coleman

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