Active damping of LCL filter without Capacitor Voltage Sensors Three-Phase PWM Inverter
Conference: Intelec 2013 - 35th International Telecommunications Energy Conference, SMART POWER AND EFFICIENCY
10/13/2013 - 10/17/2013 at Hamburg, Deutschland
Proceedings: Intelec 2013
Pages: 2Language: englishTyp: PDF
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Authors:
An, Byoung-Woong; Kim, Hag-Wone; Cho, Kwan-Yuhl (Korea Nat’l University of Transportation, Dept. of Control & Instrumentation Eng., Chungbuk, ROK)
Shin, Hee-Keun (VC Tech, R&D Center, Gyeonggi, ROK)
Abstract:
In this paper, new sensorless active damping method of grid connected LCL filter for 3-phase PWM inverter is proposed. In the proposed method, the resonance component of capacitor voltage of LCL filter can be observed by a simple MRAS(Model Reference Adaptive System) observer without additional hardware sensors. The active damping can achieve by feed-forward compensation of the observed capacitor voltage in current controller. The validity of the proposed method is proven by simulation and experiment on the 3-phase PWM inverter system