Starting circuit for a parallel resonant circuit inverter

Details Starting circuit for a parallel resonant circuit inverter Starting circuit for a parallel resonant circuit inverter

1984-08-30

1986-09-16

Salce, Patrick R.

Electric power conversion systems

Current conversion

With starting arrangement

363 36, 363136, H02M 7517

Patent

active

046126112

ABSTRACT:
The invention relates to a parallel resonant-circuit converter having at least one intermediate-circuit inductance. In order to guarantee that the inverter will start even with different loads, the voltage produced when discharging a separately charged capacitor across the load is monitored. At some time after the maximum voltage across the load is reached, another separately charged capacitor is discharged via a thyristor of the inverter located in the biasing circuit of the intermediate-circuit inductance. Because of the blocked thyristor and of the capacitor charged to the voltage maximum, the biasing current is forced to flow via diagonal branches and including the load. In this manner, reliable starting of the inverter is possible even with loads having a different natural frequency.

REFERENCES:
patent: 3657634 (1972-04-01), Eastop
patent: 3757197 (1973-09-01), Bailey
patent: 4086621 (1978-04-01), Vukasovic
patent: 4086622 (1978-04-01), Vukasovic

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