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Suppression of Leakage Current and Distortion in Variable Capacitance Devices and their Application to AC Power Regulators
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  • Journal title : Journal of Power Electronics
  • Volume 16, Issue 1,  2016, pp.66-73
  • Publisher : The Korean Institute of Power Electronics
  • DOI : 10.6113/JPE.2016.16.1.66
 Title & Authors
Suppression of Leakage Current and Distortion in Variable Capacitance Devices and their Application to AC Power Regulators
Katsuki, Akihiko; Oki, Takuya;
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The quantity of alternating current (AC) leakage and the value of distortion factor in capacitor currents are discussed with regard to a new power component called variable capacitance device (VCD). This component has terminals for controlling its capacitance. Nonlinear dielectric characteristics are utilized in this device to vary the capacitance. When VCD operates in an AC circuit, the AC leakage from this device through direct current (DC) control voltage source increases according to the conditions of DC control voltage and so on. To solve this problem, we propose techniques for suppressing AC leakage. Although VCD has strong nonlinear characteristics, the current through the capacitor is not distorted significantly. The relations between AC leakage and the distortion in current waveforms are investigated. An application example for an AC power regulator is also introduced to evaluate the distortion in waveforms.
AC power regulator;Current distortion;DC control voltage;Leakage current;Variable capacitance device;
 Cited by
R. J. Kakalec, “A feedback-controlled ferroresonant voltage regulator,” IEEE Trans. Magn., Vol. 6, No. 1, pp. 4-8, Mar. 1970. crossref(new window)

R. N. Basu, “A new approach in the analysis and design of a ferroresonant transformer,” IEEE Trans. Magn., Vol. 3, No. 1, pp. 43-49, Mar. 1967. crossref(new window)

A. Katsuki, K. Shirouzu, K. Harada, and M. Fujiwara, "Improved variable capacitance device and its applications to resonant converters," in 15th Int. Telecommunications Energy Conf.(INTELEC), Vol. 2, pp. 242-246, Sep. 1993.

K. Harada, A. Katsuki, M. Fujiwara, H. Nakajima, and H. Matsushita, “Resonant converter controlled by Variable Capacitance Devices,” IEEE Trans. Power Electron., Vol. 8, No. 4, pp. 404-410, Oct. 1993. crossref(new window)

S. Igarashi, Multi-layered Ceramic Capacitors, Gakken-sha, 1988.

M. W. Barsoum, Fundamentals of Ceramics, McGraw-Hill, 1997.

S. O. Kasap, Principles of Electrical Engineering Materials and Devices, Rev., McGraw-Hill, 2000.

A. Katsuki, K. Yoshimatsu, H. Tanoue, and Y. Sugimoto, “Distortion-free CV/CC AC power supply having the unity input power factor by the use of Variable Capacitance Devices,” International Journal of Renewable Energy Research, Vol. 4, No. 3, pp. 641-646, Sep. 2014.