Title:
【発明の名称】バイポーラチョッパおよび該バイポーラチョッパの使用方法
Document Type and Number:
Japanese Patent JP2002535951
Kind Code:
A
Abstract:
A method and a bipolar chopper for obtaining an output voltage from an a.c. input voltage supply, by continuously sampling the a.c. input voltage so as to produce a plurality of voltage samples during each cycle of the a.c. input voltage supply, selecting a fraction of each said voltage sample commensurate with a desired fractional power consumption thereof, and low-passing filtering said fraction of each said voltage sample. According to a preferred embodiment, the output voltage is sinusoidal and, for each voltage sample, a departure of the instantaneous voltage of the respective voltage sample from the desired voltage magnitude allows a commensurate fraction of the voltage sample to be output. This produces a clean sinusoidal waveform for the output voltage and preserves near unity power factor.
Inventors:
Dahan, Prosper
Callus, Ron
Callus, Ron
Application Number:
JP2000594192A
Publication Date:
October 22, 2002
Filing Date:
January 13, 2000
Export Citation:
Assignee:
Digital Pauval The Steams Akchen Gezel Shaft
International Classes:
H02M5/293; (IPC1-7): H02M5/293
Attorney, Agent or Firm:
Sota Asahina (3 outside)