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http://dx.doi.org/10.6113/TKPE.2019.24.6.445

Input Power Estimation Method of a Three-phase Inverter for High Efficiency Operation of an AC Motor  

Kim, Do-Hyun (Dept. of Electrical and Medical Convergent Engineering, Kangwon Nat'l University)
Kim, Sang-Hoon (Dept. of Electrical and Electronic Engineering, Kangwon Nat'l University)
Publication Information
The Transactions of the Korean Institute of Power Electronics / v.24, no.6, 2019 , pp. 445-451 More about this Journal
Abstract
An input power estimation method of a three-phase inverter for the high-efficiency operation of AC motors is proposed. Measuring devices, such as DC link voltage and input current sensors, are required to obtain the input power of the inverter. In the proposed method, the input power of the inverter can be estimated without the input current sensor by using the phase current information of the AC motor and the switching pattern of the inverter. The proposed method is more robust to parameter error than conventional method. The validity of the input power estimation method is verified through experiments conducted on a 1 kW permanent-magnet synchronous motor drive system.
Keywords
Input power estimation; PWM inverter; AC motor drive; High efficiency operation;
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Times Cited By KSCI : 1  (Citation Analysis)
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