Adaptive Thyristor-Controlled LC-Hybrid Active Power Filter for Reactive Power and Current Harmonics Compensation With Switching Loss Reduction

2017 ◽  
Vol 32 (10) ◽  
pp. 7577-7590 ◽  
Author(s):  
Chi-Seng Lam ◽  
Lei Wang ◽  
Sut-Ian Ho ◽  
Man-Chung Wong
Keyword(s):  
Reactive Power ◽  
Active Power Filter ◽  
Active Power ◽  
Loss Reduction ◽  
Switching Loss ◽  
Current Harmonics ◽  
Power Filter ◽  
Hybrid Active Power Filter ◽  
Harmonics Compensation

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>

Research on New Hybrid Active Power Filter

2011 ◽  
Vol 201-203 ◽  
pp. 1512-1516
Author(s):  
Jing Jie Peng ◽  
Xiao Ping Fan ◽  
Gang Li
Keyword(s):  
High Voltage ◽  
Reactive Power ◽  
Active Power Filter ◽  
Active Power ◽  
Direct Control ◽  
Pass Filter ◽  
Power Filter ◽  
Hybrid Active Power Filter ◽  
Harmonic Currents ◽  
High Voltage System

A new hybrid active power filter (NHAPF) and its corresponding controlling method are proposed in the paper, which can be applied in high voltage system. The topology structure of NHAPF is given and its compensating principle is described. The corresponding controlling method is a power direct control, which need not the lower pass filter and improve the performance of detecting precision and velocity. Simulating results show that the feasibility and validity of the compensated system. Harmonic currents and reactive power are compensated well.

scholarly journals Design of active power filter for narrow-band power line communications

2018 ◽  
Vol 189 ◽  
pp. 04012
Author(s):  
Bingting Wang ◽  
Ziping Cao
Keyword(s):  
Reactive Power ◽  
Narrow Band ◽  
Impedance Matching ◽  
Active Power Filter ◽  
Power Line ◽  
Active Power ◽  
Current Harmonics ◽  
Power Filter ◽  
Minimum Number ◽  
Band Pass

In power line communication (PLC), couplers such as coupling transformers and band-pass matching coupling circuits are usually required for coupling, band-pass filtering, and impedance matching. However, the cost and size of transformers prevent them from being an economic and compact solution for PLC couplers. In addition, passive band-pass matching coupling circuits need accurate impedance matching and possibly incur power losses. In this paper, a 6th order multiple feedback (MFB) active power filter with the minimum number of components was designed for narrow-band PLC, which has high input impedance and low output impedance, allowing outstanding performance in main voltage isolation, suppressing the current-harmonics and compensating the reactive power simultaneously. Finally, simulations were conducted in the range of 95 kHz-125 kHz (CENELEC “B-band”), which confirmed that the new filter met the CENELEC requirements for transmission and disturbance levels.

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