AC Inverter with constant power output

Details AC Inverter with constant power output AC Inverter with constant power output

1976-03-01

1978-01-31

Shoop, William M.

Electric power conversion systems

Current conversion

With condition responsive means to control the output...

363 17, 363132, H02M 700

Patent

active

040718123

ABSTRACT:
A constant voltage square wave inverter drives a load connected as the damping element in an otherwise high Q, resonant matching circuit. The frequency of the inverter is maintained near the resonant frequency of the load circuit to provide substantially constant load power.
The frequency of the inverter operation may be maintained near load circuit resonance by forcing commutation of the square wave output voltage as the rate of change of load current is substantially zero. The inverter output voltage may also be commutated as the peak current reaches a predetermined reference value to stabilize inverter operation for loads which cannot accept real power.

REFERENCES:
patent: 3118105 (1964-01-01), Relation et al.
patent: 3303408 (1967-02-01), Prines
patent: 3406327 (1968-10-01), Mapham et al.
patent: 3679962 (1972-07-01), Wanlass
patent: 3679991 (1972-07-01), Wilwerding
patent: 3781638 (1973-12-01), Anderson et al.
patent: 3805141 (1974-04-01), Pompa, Jr. et al.
patent: 3882370 (1975-05-01), McMurray

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