Single-switch, high power factor, ac-to-ac power converters

Details Single-switch, high power factor, ac-to-ac power converters Single-switch, high power factor, ac-to-ac power converters

1996-03-05

1999-12-28

Pascal, Robert

Electric lamp and discharge devices: systems

Periodic switch in the supply circuit

Silicon controlled rectifier ignition

315205, 315219, 315291, 315247, 363 24, 363 34, 363 37, 363 39, H05B 3702

Patent

active

060085894

ABSTRACT:
A single-switch ac-to-ac converters for driving ac loads which are particularly suitable for gas discharge lamp ballast applications based upon integration of automatic current shapers and converters that resemble a class-E converter, both parts sharing a single active switch. The first part comprises a high power factor (HPF) converter having automatic input current-shaping means and internal energy storage means operated by the single active switch driven at a constant frequency and duty ratio, and the second part comprises a resonant converter means operated by the aforesaid single active switch as it is being driven. Integration of the HPF converter having automatic current shaping means and the resonant converter through the single active switch operation brings advantages from both parts into the whole circuit, such as soft-switching characteristics so that the combined circuit can shape the input current without switching losses in a compact structure.

REFERENCES:
patent: 3919656 (1975-11-01), Sokal et al.
patent: 4184197 (1980-01-01), Cuk et al.
patent: 4547705 (1985-10-01), Hirayama et al.
patent: 4564897 (1986-01-01), Okamoto et al.
patent: 4647817 (1987-03-01), Fahnrich et al.
patent: 4959764 (1990-09-01), Bassett
patent: 5021716 (1991-06-01), Lesea
patent: 5057749 (1991-10-01), Nilssen
patent: 5122712 (1992-06-01), Hirschmann
patent: 5223767 (1993-06-01), Kulka
patent: 5416387 (1995-05-01), Cuk et al.
patent: 5510974 (1996-04-01), Gu et al.
Lutteke et al., "High Voltage High Frequency Class-E Converter Suitable for Miniaturization," IEEE Power Electronics Specialists Conference, 1984, pp. 54-61.
Lutteke et al., "220V Mains 500 kHz Class-E Converter Using a Bimos," IEEE Power Electronics Specialists Conference, 1985, pp. 127-135.
Hiramatsu et al., "Low THD Electronic Ballast with a New AC-DC Converter Operation," Illuminating Engineering Society of North America, Aug. 1992.
Malesani et al., "High Efficiency Electronic Lamp Ballast With Unity Power Factor," IEEE Industry Applications Society (IAS) Annual Conference, 1992, pp. 681-688.
Ismail et al., "A New Class of Low Cost Three-Phase High Quality Rectifiers with Zero-Voltage Switching," IEEE Applied Power Electronics Conference and Exposition, Conference Proceedings, 1993, pp. 182-189.
Matsuo et al., "A New Combined Voltage-Resonant Inverter with High Power Factor and Low Distortion Factor," IEEE Power Electronics Specialist Conference, 1994, pp. 331-335.
Spiazzi et al., "High-Quality Rectifier Based on Coupled-Inductor Sepic Topology," IEEE Power Electronics Specialist Conference, 1994, pp. 336-341 .

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