The Selective Harmonic Detection for the Integration Photovoltaic Generation and Active Power Filter

2011 ◽  
Vol 58-60 ◽  
pp. 781-786
Author(s):  
Yan Dan Lin ◽  
Li Qing Tong ◽  
Yao Jie Sun
Keyword(s):  
Control Strategy ◽  
Detection Method ◽  
Active Power Filter ◽  
Active Power ◽  
Positive Sequence ◽  
Harmonic Detection ◽  
Power Filter ◽  
Three Phase ◽  
Frequency Domains ◽  
And Control

To improve the utilization of the inverter of the photovoltaic grid connected systems and decrease the harmonic of the grid, a novel selective harmonic detection method based on the synchronous rotator frame is proposed. Utilizing three-phase Park transform, the rotator vector is transferred to the static vector, and the synchronous harmonic is separated and acquired. The characteristic of negative and positive sequence harmonic is fleetly and exactly presented in all frequency domains. Additional, a new control strategy based on this harmonic detection is proposed for the integration photovoltaic grid connected generation and active power filter. Validity and practicality of the proposed selective harmonic detection method and control strategy are proved.

The Simulation Research of Harmonic and Reactive Current Detection

2013 ◽  
Vol 373-375 ◽  
pp. 992-995
Author(s):  
Jun Li Wan ◽  
Wen Jie Chen
Keyword(s):  
Real Time ◽  
Reactive Power ◽  
Active Power Filter ◽  
Active Power ◽  
Harmonic Detection ◽  
Power Theory ◽  
Instantaneous Reactive Power Theory ◽  
Power Filter ◽  
Three Phase ◽  
Reactive Current

This paper arrives at a method of harmonic and reactive current real-time detection applied on active power filter based on the three-phase circuit instantaneous reactive power theory. With Matlab simulation software, a research on simulation of harmonic detection means is carried out, and an analysis of the simulation result is presented. The result indicates: the harmonic detection means based on instantaneous reactive power theory can detect harmonic and reactive component in three-phase current precisely and real-time, to supply reliable harmonic and reactive current for harmonic restraint and reactive power compensation. It could provide reliable indicator parameters for research and development of active power filter.

scholarly journals Improved p-q Harmonic Detection Method for Hybrid Active Power Filter

2018 ◽  
Vol 8 (5) ◽  
pp. 2910 ◽  
Author(s):  
Chau Minh Thuyen
Keyword(s):  
Dynamic Response ◽  
Reactive Power ◽  
Detection Method ◽  
Active Power Filter ◽  
Active Power ◽  
Harmonic Detection ◽  
Harmonic Current ◽  
Transient Time ◽  
Power Filter ◽  
Hybrid Active Power Filter

<p>The accuratedetermination of the load harmonic current is one of the important factors, it decides to effect of harmonic filtering and reactive power compensation for Hybrid Active Power Filter. The p-q harmonic detection method has been widely used in determining the harmonic currents of Hybrid Active Power Filter. However, when using this method, the dynamic response of Hybrid Active Power Filter in the transient period will have a large transient time and overshoot whenever the load changes abruptly. Therefore, in this paper an improved p-q harmonic current detection method based on fuzzy logic is proposed, which aims to reduce the overshoot and transient time in transient duration of Hybrid Active Power Filter. In order to compare the dynamic response of conventional and improved p-q harmonic detection methods, simulation results have demonstrated that: the proposed method has a shorter response time, the magnitude of the supply current in the transient time is smaller and the overshoot of the fundamental active and reactive power components is very small. This has a practical significance that contributes to the stability of the Hybrid Active Power Filter system</p>

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