Research on Harmonic Current Amplification Effect of Parallel APF Compensating Voltage Source Nonlinear Load

A parallel active power filter (APF) is generally used to suppress dynamic harmonic current and compensate reactive power in the grid. However, parallel APF may have a negative effect on the load current when compensating the nonlinear load of a voltage source type, which may lead to the amplificati...

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Bibliographic Details
Published inEnergies (Basel) Vol. 12; no. 16; p. 3070
Main Authors Wei, Xueliang, Li, Cunzhong, Qi, Mingxuan, Luo, Bingyang, Deng, Xiangtian, Zhu, Guorong
Format Journal Article
LanguageEnglish
Published Basel MDPI AG 09.08.2019
Subjects
Alternating current
Bridge loads
Bridges
Capacitance
Coefficient of variation
Compensation
Derivation
Electric potential
Electricity distribution
Feasibility
harmonic current amplification effect
Impedance
Inductance
Input impedance
International conferences
Load
Load resistance
Mapping
parallel active power filter (APF)
Power supplies
Power supply
Quantitative analysis
Reactive power
Voltage
Beijing China
China
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Summary:A parallel active power filter (APF) is generally used to suppress dynamic harmonic current and compensate reactive power in the grid. However, parallel APF may have a negative effect on the load current when compensating the nonlinear load of a voltage source type, which may lead to the amplification effect of the load harmonic current. In this paper, the fundamental causes of harmonic current amplification were analyzed by studying the harmonic current amplification effect when a parallel APF compensates a nonlinear load. According to the results of the theoretical derivation, a feasible method to limit this current amplification effect by changing the system structure and the APF’s own control was proposed, and the corresponding design scheme is given. Finally, the correctness of the theoretical derivation of the harmonic current amplification effect and the feasibility of the proposed solution were proven through simulation and experiment.
ISSN:1996-1073
1996-1073
DOI:10.3390/en12163070