A Mutual Blocking Technology Applied to Dual Power Source Switching Control

Hsin-Chuan Chen, Ping-Huan Kuo and Chiou-Jye Huang
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Hsin-Chuan Chen: School of Computer Engineering, University of Electronic Science and Technology of China, Zhongshan Institute, Zhongshan 528402, China
Ping-Huan Kuo: Computer and Intelligent Robot Program for Bachelor Degree, National Pingtung University, Pingtung 90004, Taiwan
Chiou-Jye Huang: School of Electrical Engineering and Automation, Jiangxi University of Science and Technology, Ganzhou 341000, China

Energies, 2019, vol. 12, issue 4, 1-10

Abstract: In many industries and medical power system applications, dual power source design is often used to ensure that the equipment runs continuously, even when the main power supply is shut down. However, the voltage feedback between two independent power supplies and low loss output are critical issues for the system energy dissipation. Without using a dedicated chip, a new mutual blocking control technology is proposed in this paper to effectively solve the problem of voltage feedback existing in the conventional dual power system. In addition, without adding much hardware cost, the proposed dual power switch design can completely avoid voltage feedback and achieve a low voltage loss of about 30 mV when the load current is less than 0.5 A.

Keywords: dual power source switch; mutual blocking control technology; low loss output; voltage feedback (search for similar items in EconPapers)
JEL-codes: Q Q0 Q4 Q40 Q41 Q42 Q43 Q47 Q48 Q49 (search for similar items in EconPapers)
Date: 2019
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