Series inverter circuit with timing responsive to reflective cur

Details Series inverter circuit with timing responsive to reflective cur Series inverter circuit with timing responsive to reflective cur

1982-11-24

1987-03-03

Beha, Jr., William H.

Electricity: battery or capacitor charging or discharging

Serially connected batteries or cells

With discharge of cells or batteries

315241R, 363 58, H02H 7122

Patent

active

046478302

ABSTRACT:
A series inverter, high voltage capacitor charging circuit includes current sensors for sensing the current through each SCR in the circuit. The sensed current is used to vary the gating frequency of the SCRs and to preclude firing of an SCR until the other is in a stable off condition. The gating of each SCR is delayed by an amount of time determined by a control capacitor charging circuit. That charging circuit is inhibited as long as one of the SCRs is conducting and once the load voltage has reached a predetermined level. The time constant of that charging circuit can be changed as the desired level is approached of if insufficient reverse bias is applied to an SCR for quick turn-off of the SCR. Resolution of the system can be increased by a shunt regulator which shorts the output transformer. The circuit can be disabled if the high voltage capacitor does not reach its set level within a given time.

REFERENCES:
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Cronin, 2800 Watt Series Inverter DC Power Supply, PCSC, 1971, Record, pp. 117-123.
Schwartz, A., Series Capacitor Inverter-Converter for Multikilowatt Power Conversion, NASA Technical Report R-336, Apr. 1970.
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Gayek, H. W., "Power Conditioning for Thermoelectric Generators", IECEC '68 Record, pp. 669-679.

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