NDLI: The study on control technique of multi-function feedback electronic load

Content Provider	IEEE Xplore Digital Library
Author	Tong Ziquan Gai Jianxin Wang Chuanzong
Copyright Year	2010
Description	Author affiliation: The higher educational key laboratory for Measuring & Control Technology and Instrumentations of Heilongjiang Province, Harbin University of Science and Technology, China (Tong Ziquan; Gai Jianxin; Wang Chuanzong)
Abstract	This paper presents an implementation method for 40KVA feedback electronic load with multiple functions. It designs the circuit of control unit and researches on the control technique. The control unit is designed with LPC2136 and CPLD as the core. Through the Direct Digital Synthesis approach we get sine wave with low frequency and triangular wave with high frequency, and generate the SPWM wave by use of analogue technique. Using 6-channel high speed and high accuracy ADC we implement synchronous detection to the input, output power signal and the internal electric source signal of the electronic load to realize the ability of speed setting and feedback. The control unit also has the ability of monitoring input and setting the work status. With these abilities, it allows real-time processing of the fault. This paper provides a digital PID adjustment method with constant current and power setting mode, which explains the control characteristic of the electronic load when it works under power source with high-power and frequency conversion, power switch and transformer with high power. The method presented in the paper has been successfully applied to 40KVA electronic load equipment with power factor adjustment, which allows event triggering and can save 90% power dissipation.
Starting Page	213
Ending Page	215
File Size	462341
Page Count	3
File Format	PDF
ISBN	9781424490387
DOI	10.1109/IFOST.2010.5668077
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	2010-10-13
Publisher Place	Korea (South)
Access Restriction	Subscribed
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	energy feedback of electronic load power factor adjustment event trigger direct digital synthesis
Content Type	Text
Resource Type	Article

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