Static inverter employing an assymetrically energized inductor

Details Static inverter employing an assymetrically energized inductor Static inverter employing an assymetrically energized inductor

1978-11-01

1980-05-06

Miller, J. D.

Electric power conversion systems

Current conversion

With condition responsive means to control the output...

363 49, 363 18, 331113A, 336172, H02M 748

Patent

active

042020310

ABSTRACT:
A static inverter employing an inductor and an electrical gain element for intermittent assymetric energization of the inductor from a dc source is described. Reliable intermittent operation of the gain element, typically a power transistor, is achieved by use of three feedback windings which in response to saturation of a branch of the core of the inductor but before full core saturation, discontinue regenerative feedback and then apply degenerative feedback. This turn off mechanism protects the transistor from high current stresses. Passive means are provided such as a capacitor for momentarily storing the energy or diode means for coupling the energy back to the source or to the load to protect the transistor from the high voltage surge and the energy release when current flow in the inductor is interrupted. Energy stored in the capacitor may be used for transistor commutation.

REFERENCES:
patent: 2284406 (1942-05-01), D'Entremont
patent: 3914680 (1975-10-01), Hesler et al.
patent: 4002999 (1977-01-01), Hesler et al.
patent: 4004251 (1977-01-01), Hesler et al.
patent: 4135234 (1979-01-01), Forge

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