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Consideration on efficiency and distortion in a power-factor-corrected constant-voltage constant-current AC power supply having variable capacitance devices

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2 Author(s)
Akihiko Katsuki ; Dept. of Computer Science and Electronics, Kyushu Institute of Technology, Japan ; Takuya Oki

The new constant-voltage constant-current ac power supply is presented. Unique Variable Capacitance Device from our laboratory has been used as a linear reactance element in power stage. This circuit makes almost no distortion of output voltage waveform and a high efficiency can be obtained. To control the output voltage and current, and to correct input power factor, two Variable Capacitance Devices were employed as a linear capacitor. The unity input power factor can be obtained all over the constant-voltage constant-current region. At no load and at short-circuit load, the input current is almost zero. The relationship between efficiency and distortion is considered.

Published in:

TENCON 2010 - 2010 IEEE Region 10 Conference

Date of Conference:

21-24 Nov. 2010