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| Adaptive Repetitive Control of Parallel Active Power Filter |
| Jia Yaoqin, Wang Xiaobin, Yang Qiang |
| Xi’an Jiaotong University Xi’an 710049 China |
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Abstract According to the traditional repetitive control method of parallel active power filter, an adaptive detection method of load harmonic currents and an adaptive signal generator for repetitive control are proposed in this paper. Based on the instantaneous reactive power theory, the digital detection of harmonic currents in the d-q coordinate is achieved and the adaptive sampling number kmax in every fundamental cycle is proposed to eliminate the effect of grid voltage frequency variation. The proportional control and repetitive control algorithm are adopted in parallel to correct the output current waveform. Experimental results have verified the effectiveness of this adaptive digital repetitive control method.
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Received: 25 March 2009
Published: 07 March 2014
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2011, Vol. 26 
