Electricity: power supply or regulation systems – In shunt with source or load – Using a three or more terminal semiconductive device
Patent
1980-09-18
1982-08-31
Beha, Jr., William H.
Electricity: power supply or regulation systems
In shunt with source or load
Using a three or more terminal semiconductive device
323222, 323282, G05F 1445
Patent
active
043474748
ABSTRACT:
Apparatus for providing the voltage transformation functions of a conventional electrical power transformer. An AC input signal is chopped in a solid state switching converter at a frequency very much larger than the frequency of the input signal and then filtered to attenuate the high frequency component while passing the frequency of the AC input signal. The switching converter includes a pair of bidirectional solid state switches, an inductor and a capacitor connected in a buck converter, boost converter or buck-boost converter arrangement to provide a step up, step down, or step up/step down capability, respectively. A feedback signal modulates the duty cycle of the switching converter to provide automatic voltage regulation under varying loads and leading and lagging power factors.
REFERENCES:
patent: 3564394 (1971-02-01), Opal et al.
patent: 4168477 (1979-09-01), Burchall
Bowers et al, "A Solid State Transformer", PESC '80 Record, IEEE Power Elronics Specialists Conf., Atlanta, Ga., USA, (16-20 Jun. 1980), pp. 253-264.
Nienhaus & Bowers, "An Active Power Band Pass Filter", PESC '78 Record, pp. 307-316, Jun. 15, 1978.
Middlebrook et al, "A General Unified Approach to Modelling Switching-Converter Power Stages", PESC '76 Record, pp. 18-31.
Bowers James C.
Brooks James L.
Nienhaus Harry A.
Staab Roger I.
Beers Robert F.
Beha Jr. William H.
Daubenspeck W. C.
St. Amand Joseph M
The United States of America as represented by the Secretary of
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