Distortion-Free CV/CC AC Power Supply Having the Unity Input Power Factor by the Use of Variable Capacitance Devices

Year 2014, Volume: 4 Issue: 3, 641 - 646, 01.09.2014

Akihiko Katsuki Koichiro Yoshimatsu Hidetaka Tanoue Yuichi Sugimoto

https://izlik.org/JA39MG94XP

Abstract

A new CV (Constant-Voltage) CC (Constant-Current) ac power regulator is proposed. Our original Variable Capacitance Device of linear reactance device is utilized in the power stage. This device makes almost no distortion. In this circuit, a sinusoidal output voltage and a high efficiency can be obtained. For the purpose of output voltage/current control and input power-factor correction, two Variable Capacitance Devices were adopted. Two dc-dc converters were used for high-speed driver of these  devices. The unity input power factor can be obtained all over the constant-voltage region and the constant-current region. Input current of the proposed power supply becomes almost zero at no load and at short-circuit load.

Keywords

Variable Capacitance Device; ac power supply; no distortion; unity input power factor; dc-dc converter

References

• T. Hasumi, Applications of Ferroresonance, Ohm-sha, Tokyo, 1952. (in Japanese)
• C. Hayashi, Nonlinear Oscillations in Physical Systems, McGraw-Hill, New York, 1964.
• R. J. Kakalec, “A Feedback-Controlled Ferroresonant Voltage Regulator,” IEEE Transactions on Magnetics, Vol. MAG-6, pp. 4-8, March 1970.
• A. Katsuki, H. Iwata, and T. Matsui, “Distortion-Free Regulated AC Power Supply Using Variable Capacitance Device,” Proceedings of PCC’97 (The 2nd Power Conversion Conference), pp. 347-354, August 1997.
• K. Harada, A. Katsuki, M. Fujiwara, H. Nakajima, and H. Matsushita, “Resonant Converter Controlled by Variable Capacitance Device,” IEEE Transactions on Power Electronics, Vol. 8, No. 4, pp. 404-410, October 1993.
• A. Katsuki, S. Ishimaru, and T. Arai, “Power-Factor- Corrected Distortion-Free Regulated AC Power Supply Using Variable Capacitance Devices,” Proceedings of INTELEC’99 Telecommunications Energy Conference), No. 31-43, June 1999. 21st International
• A. Katsuki and T. Arai, “Distortion-Free Constant- Voltage Constant-Current AC Power Supply Using Variable Capacitance Device,” Proceedings of IPEC’00 (The 4th International Power Electronics Conference), pp. 1704-1710, April 2000.
• A. Katsuki, T. Arai, and M. Matsushima, “Power- Factor-Corrected Distortion-Free Constant-Voltage Constant-Current AC Power Supply Using Variable Capacitance Devices,” Proceedings of PCC’02 (The 3rd Power Conversion Conference), pp. 933-940, April 2002.