Wide load matching capability power supply

Details Wide load matching capability power supply Wide load matching capability power supply

1992-12-01

1995-05-23

Sterrett, Jeffrey L.

Electric power conversion systems

Current conversion

Including automatic or integral protection means

363135, H02M 7523

Patent

active

054187060

ABSTRACT:
A high frequency power inverter comprises a power supply, a thyristor for switching the energy from the power supply to a load and a neutral capacitor for storing energy cyclically to assure reverse voltage is applied to the thyristor. A clamp circuit is associated with the switch to limit the ring-up voltage on the capacitor to a preselected value. The clamp circuit is comprised of an inductor having a relatively large value for permitting a gradual leaking of the capacitor voltage during an inverting of the power supply voltage to the load so that the capacitor can ring-up to a higher value than the supply voltage. The inductor is selected so that under all conditions, the voltage on the capacitor will be safely larger than the power supply voltage plus a load voltage peak for a time long enough to assure thyristor turn off.

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patent: 4286317 (1981-08-01), Kommisari
patent: 4290101 (1981-09-01), Hergenhan
patent: 4336585 (1982-06-01), Moriarty et al.
patent: 4442479 (1984-04-01), Makimaa
patent: 4608627 (1986-08-01), Holt

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