Abstract：Although LCL filter is more effective since it more efficiently attenuates the switching harmonics in three phase voltage PWM rectifier, it causes stability problems. To enable stable operation, an active damping(AD)algorithm without extra sensors has to be used by introducing grid harmonics to control loop. A discrete model of control system is established by S/H (sampling and holding) method, in which the time delay caused by PWM modulation is considered, and its stability is analyzed in z-plane. Simulation results indicate the correctness of the proposed active damping strategy.
郭希铮, 游小杰, 李欣然. LCL滤波的三相电压型PWM整流器无传感器有源阻尼控制方法[J]. 电工技术学报, 2011, 26(1增): 92-96.
Guo Xizheng, You Xiaojie, Li Xinran. A Sensorless Active Damping Method for Three-phase Voltage PWM Rectifier with LCL filter. Transactions of China Electrotechnical Society, 2011, 26(1增): 92-96.
[1] Komurcugil H, Kukrer O. A novel current-control method for three-phase PWM AC-DC voltage-source convertors[J]. IEEE Transactions on Industrial Electronics, 1999, 46(3): 544-553. [2] Karrari M, Rosehart W. Comprehensive control strategy for a variable speed cage machine wind generation unit[J]. IEEE Transactions on Energy Conversion, 2005, 20(2): 415-423. [3] Pekik Argo Dahono. A control method for DC-DC converter that Has an LCL output filter based on new virtual capacitor and resistor concepts[C]. Proceedings of the Annual IEEE Power Electronics Specialists Conference, 2004. [4] 张宪平, 李亚西, 林资旭, 等. LCL滤波的电压型PWM整流器的有源阻尼抑制[J]. 电气传动, 2007, 37(11). [5] Blasko V, Kaura, V. A novel control to actively damp resonance in input LC filter of a three phase voltage source converter[C]. IEEE Applied Power Electrionic Conference, 1996(2): 545-551. [6] Hansen S, Malinowski M, Blaabjerg F. Sensorless control strategies for PWM rectifier[C]. Proceedings of the IEEE Applied Power Electrionic Conference, 2000, 832-838. [7] Malinowski M, Bernet S. A simple voltage source sensorless active damping scheme for three-phase PWM converters with a LCL filter[J]. IEEE Transactions on Industrial Electronics, 2008, 55(4): 1876-1880.
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