Research on improved harmonic detection method based on ip-iq theory

Wang Zhenshang; Fu Peng; Huang Liansheng; Chen Xiaojiao; Wang Zhongma; Zeng Sizhe

doi:10.11884/HPLPB201931.180295

Volume 31 Issue 5

May 2019

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Article Navigation > High Power Laser and Particle Beams > 2019 > 31(5): 056005

Wang Zhenshang, Fu Peng, Huang Liansheng, et al. Research on improved harmonic detection method based on ip-iq theory[J]. High Power Laser and Particle Beams, 2019, 31: 056005. doi: 10.11884/HPLPB201931.180295

Citation:

Wang Zhenshang, Fu Peng, Huang Liansheng, et al. Research on improved harmonic detection method based on ip-iq theory[J]. High Power Laser and Particle Beams, 2019, 31: 056005. doi: 10.11884/HPLPB201931.180295

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Research on improved harmonic detection method based on ip-iq theory

doi: 10.11884/HPLPB201931.180295

Wang Zhenshang^{1, 2
,},
Fu Peng^{1, 2},
Huang Liansheng^{1, 2},
Chen Xiaojiao^{1
,
,},
Wang Zhongma^{1, 2},
Zeng Sizhe^{1, 2}

1.
Institute of Plasma Physics, Hefei Institutes of Physical Science, Chinese Academy of Sciences, Hefei 230031, China
2.
Science Island Branch of Graduate School, University of Science and Technology of China, Hefei 230026, China

Received Date: 2018-10-30
Rev Recd Date: 2019-02-22
Publish Date: 2019-05-15

Abstract

Abstract

Active power filter (APF) is the key equipment to realize power quality management in power system. Harmonic detection is one of the key technologies of APF. The detection accuracy and response speed directly determine the overall performance of APF. In this paper, the traditional ip-iq harmonic current detection algorithm based on instantaneous reactive power theory is introduced; and the detection accuracy is affected by the phase error of the phase locked loop output and the response speed of the harmonic detection system is limited by the existence of low-pass filter. An improved harmonic detection algorithm is proposed by frequency-locked loop technology. The algorithm can generate unit sine and cosine signals with the same frequency of grid voltage, and moving average filter (MAF) is used instead of low-pass filter to improve its response speed and harmonic detection accuracy. The algorithm is analyzed theoretically and simulated by MATLAB. The theoretical analysis and simulation results prove the effectiveness of this method.
- active power filter,
- harmonic detection,
- instantaneous reactive power theory,
- frequency locked loop,
- MAF

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References(14)

References

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