An improved control circuit for Series Hybrid Active Power Filter compensating current-voltage harmonics, reactive power and supply unbalance

2012 ◽  
Author(s):  
M. A. Mulla ◽  
R. Chudamani ◽  
A. Chowdhury
Keyword(s):  
Reactive Power ◽  
Active Power Filter ◽  
Active Power ◽  
Control Circuit ◽  
Power Filter ◽  
Hybrid Active Power Filter ◽  
Current Voltage ◽  
Voltage Harmonics

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.

THREE-PHASE FOUR-WIRE PV-BASED SERIES HYBRID ACTIVE POWER FILTER FOR POWER QUALITY IMPROVEMENT

2014 ◽  
Vol 23 (10) ◽  
pp. 1450144 ◽  
Author(s):  
M. VIJAYAKUMAR ◽  
S. VIJAYAN
Keyword(s):  
Reactive Power ◽  
Experimental Studies ◽  
Active Power Filter ◽  
Boost Converter ◽  
Active Power ◽  
Solar Irradiation ◽  
Voltage Source ◽  
Power Filter ◽  
Hybrid Active Power Filter ◽  
Three Phase

This paper proposes a photovoltaic (PV)-based three-phase four-wire (3P4W) series hybrid active power filter (SHAPF) it comprises of a series active power filter (SAPF) and an LC shunt passive filter. The proposed system eliminates both the current and voltage harmonics and compensates reactive power, neutral current and voltage interruption. A SAPF demands a source of energy for compensating the voltage sag/swell. This system introduces a new topology for SHAPF utilizes the PV with DC–DC boost converter as a source of DC power for SAPF. The compensation current reference evaluation is based on the twin formulation of the vectorial theory of electrical power theorem with fuzzy logic controller (FLC). The PV array/battery managed DC–DC boost converter is employed to step up the voltage to meet the DC bus voltage requirement of the three-leg voltage source inverter (VSI). The foremost benefit of the proposed system is that, it will provide uninterrupted compensation for the whole day. This system utilizes the renewable energy accordingly saves the energy and shares the load during the solar irradiation available. The simulation and experimental studies are carried out to validate the effectiveness of the proposed PV-SHAPF.

Research on the Hybrid Active Power Filter

2011 ◽  
Vol 383-390 ◽  
pp. 610-614
Author(s):  
Wang Fang ◽  
Xiao Dan Cui ◽  
Jing Wang
Keyword(s):  
Power System ◽  
Reactive Power ◽  
Active Power Filter ◽  
Reactive Power Compensation ◽  
Active Power ◽  
Power Filter ◽  
Hybrid Active Power Filter ◽  
Source Impedance ◽  
Passive Power ◽  
Simulation Results

Passive power filter (PF) has problems that source impedance may strongly affect the filtering characteristics and cause system resonance in power system applications. Hybrid active power filter (HAPF) can improve the performance of passive filter and realize harmonics restraint and reactive power compensation in big power situation. In this paper, the principle of HAPF is analyzed, the model of HAPF is established, and the simulation results are discussed.

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