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http://dx.doi.org/10.6113/TKPE.2010.15.5.387

Compensation of Temperature Characteristics for Capacitance Estimation of DC-link Capacitors  

Pu, Xingsi ((주)에이디티)
Kim, Kyung-Hyun (영남대 전기공학과)
Lee, Dong-Choon (영남대 전기공학과)
Lee, Kyo-Beum (아주대 전자공학부)
Kim, Jang-Mok (부산대 전자전기공학부)
Publication Information
The Transactions of the Korean Institute of Power Electronics / v.15, no.5, 2010 , pp. 387-393 More about this Journal
Abstract
This paper proposes a correction method of capacitance estimation considering the temperature effect for the DC-link capacitor banks in three-phase AC/DC/AC PWM converters. At first, operating temperature of the capacitors is detected and capacitance variation is corrected due to the temperature effect. Thermisters are used for sensing the temperature and voltage variation across the thermister is exploited to identify the capacitance change. The validity of the proposed method has been verified by experimental results.
Keywords
Capacitance; Estimation; Temperature effect; Thermister;
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