Open Access Open Access  Restricted Access Subscription or Fee Access

Microcontroller Based Light Load Efficiency Optimization for an AC-DC Converter

K.S. Chandragupta Mauryan, P. Pradeep, S. Arthi, R. Jayapal, K. Kanaka Priya

Abstract


In this paper the method of maintaining high power conversion efficiency across the entire load range and its simple microcontroller based circuit implementation is described. This method substantially increases the conversion efficiency at light loads by minimizing switching and driving losses of semiconductor switches, core losses of the magnetic components, as well as transformer losses. These losses are minimized by periodically turning OFF and ON of the power converter. The converter is turned ON only when it operates at power level that exhibits the maximum efficiency and turned OFF at low load and supplied through the battery which is charged simultaneously during high load condition where efficiency is maximum. So eliminating the constant losses which are independent on any load, the efficiency of the system gets improved to considerable amount. The proposed method is implemented for 230/12V single phase fully controlled rectifier.

Keywords


Efficiency Optimization, Light Load, Maximum Efficiency, Power Management

Full Text:

PDF

References


Yungtaek Jang, Milan M. Jovanovic “Light-Load Efficiency Optimization Method”, IEEE transactions on power electronics, vol.25, no. 1, January 2010.

F. C. Lee, P. Barbosa, P. Xu, J. Zhang, B. Yang, and F. Canales, “Topologies and design considerations for distributed power system applications,” Proc. IEEE, vol. 89, no. 6, pp. 939–950, Jun. 2001.

F. C. Lee, M. Xu, S. Wang, and B. Lu, “Design challenges for distributed power systems,” in Proc. IEEE Int. Power Electron. Motion Control Conf. (IPEMC), Shanghai, China, 2006, pp. 1–15 (Key note speech PA1).

H. S. Choi and D. Y. Huh, “Techniques to minimize power consumption of SMPS in standby mode,” in IEEE Power Electron. Spec. Conf. (PESC) Rec., , pp. 2817–2822, 2005.

P. Vinciarelli, “Adaptive boost switching preregulator and method,” U.S. Patent 5 289 361, Feb. 22, 1994.

J. Choi, D. Huh, and Y. Kim, “The improved burst mode in the stand-by operation of power supply,” in Proc. IEEE Appl. Power Electron. Conf. (APEC), pp. 426–432, 2004.

A. A. Ansari, Dr. D. M. Deshpande “Induction Motor Efficiency Optimization Using Fuzzy Logic” Published in International Journal of Advanced Engineering & Applications, Jan. 2010


Refbacks

  • There are currently no refbacks.


Creative Commons License
This work is licensed under a Creative Commons Attribution 3.0 License.