Comparison of reference signal extraction methods for active power filter to mitigate load harmonics from wind turbine generator

2015 ◽  
Author(s):  
Sajid Hussain Qazi ◽  
Mohd Wazir Bin Mustafa ◽  
Shakir Soomro ◽  
Raja Masood Larik
Keyword(s):  
Wind Turbine ◽  
Reference Signal ◽  
Active Power Filter ◽  
Extraction Methods ◽  
Active Power ◽  
Signal Extraction ◽  
Turbine Generator ◽  
Wind Turbine Generator ◽  
Power Filter

CURRENT HARMONICS MITIGATION FROM GRID CONNECTED VARIABLE SPEED WIND TURBINE DUE TO NONLINEAR LOADS USING SHUNT ACTIVE POWER FILTER

2017 ◽  
Vol 79 (4) ◽  
Author(s):  
Sajid Hussain Qazi ◽  
Mohd Wazir Mustafa ◽  
U. Sultana ◽  
Nayyar Hussain Mirjat
Keyword(s):  
Wind Turbine ◽  
Active Power Filter ◽  
Active Power ◽  
Variable Speed ◽  
Nonlinear Loads ◽  
Shunt Active Power Filter ◽  
Current Harmonics ◽  
Power Filter ◽  
Current Controller ◽  
Synchronous Reference Frame

The quality of power nowadays is of great concern due to increasing demand of supply and energy resources are limited, another cause is increasing penetration of nonlinear loads in the power system. In order to overcome energy supply challenges, the focus of technologists is shifting to the renewable energy side such as the wind and solar energy and so on. As such, mitigating effect of nonlinear loads have become ever important as well. In this context, various techniques have been used by researchers in past decades. Shunt active power filter (APF) have long been used to mitigate current harmonics from fixed wind turbine generator (WTG). In this study shunt APF has been applied with variable speed WTG using synchronous reference frame (SRF) for the extraction of compensation signal for APF. Gate driver signals are generated from Bang-Bang Controller (Hysteresis Band Current Controller HBCC). A MATLAB/SIMULINK based Model have been developed. The Simulation results show decreased THD levels of the system and clearly suggest the effectiveness of Shunt APF in meeting the IEEE-519 standard recommendation for harmonic levels in WTG.

Two-Level Grid-Side Converter-Based STATCOM and Shunt Active Power Filter of Variable-Speed DFIG Wind Turbine-Based WECS Using SVM for Terminal Voltage

2021 ◽  
Vol 12 (2) ◽  
pp. 169-202
Author(s):  
Hazem Hassan Ali ◽  
Nashwa Ahmad Kamal ◽  
Ghada Saeed Elbasuony
Keyword(s):  
Wind Turbine ◽  
Active Power Filter ◽  
Active Power ◽  
Point Of View ◽  
Shunt Active Power Filter ◽  
Economic Point ◽  
Power Filter ◽  
Terminal Voltage ◽  
Grid Side ◽  
Grid Side Converter

Regulation of the terminal voltage of doubly fed induction generator (DFIG)-based wind energy conversion system (WECS) by modifying the control scheme of the grid side converter (GSC) is necessary compared to connecting alone flexible AC transmission systems (FACTS) and active power filter devices from economic point of view. An assessment study of GSC control strategy based both of static synchronous compensator (STATCOM) and shunt active power filter (SAPF) is introduced in this paper. STATCOM based AC voltage magnitude regulator and SAPF-based load calculations are controlled using space vector modulation (SVM) technique to maintain the terminal voltage of DFIG wind turbine constant when a grid disturbance happened. The system under study is modeled in MATLAB/Simulink environment. The simulation results under wind speed variation demonstrated that GSC-based STATCOM gives better results in regulation of the terminal voltage of DFIG compared to GSC-based SAPF and enhancement of the stability of this system.

scholarly journals Motor side active power filter for induction motor

2020 ◽  
Vol 11 (4) ◽  
pp. 1711
Author(s):  
H.V. Gururaja Rao ◽  
R.C Mala ◽  
Ambika Joshi
Keyword(s):  
Induction Motor ◽  
Reactive Power ◽  
Control Strategies ◽  
Reference Signal ◽  
Harmonic Distortion ◽  
Active Power Filter ◽  
Active Power ◽  
Variable Frequency Drive ◽  
Power Filter ◽  
Synchronous Reference Frame

Power quality is an important aspect in electrical distribution and utilization systems. Variable frequency drive (VFD) controlled induction motors are widely used in industries. The output current of VFD which is nonsinusoidal is given to the induction motor. This paper proposes a motor side active power filter (MSAPF) so as to provide a pure sinusoidal current to the induction motor. An evaluation of two control strategies has been discussed in this paper i.e. Synchronous Reference Frame (SRF) theory and Instantaneous Reactive Power theory (IRPT) in the generation of the reference signal. These techniques are simulated in MATLAB/SIMULINK environment. These simulations demonstrate the reduction in total harmonic distortion (THD) in the motor current with active filter connected to the motor side.

AC Grid Connected DFIG-Based Wind Turbine with Shunt Active Power Filter Based on Nonlinear Predictive Control

2015 ◽  
Vol 8 (3) ◽  
pp. 354 ◽  
Author(s):  
Abderrahmane El Kachani ◽  
El Mahjoub Chakir ◽  
Anass Ait laachir ◽  
Tarik Jarou ◽  
Abdelhamid Niaaniaa ◽  
...  
Keyword(s):  
Wind Turbine ◽  
Predictive Control ◽  
Active Power Filter ◽  
Active Power ◽  
Shunt Active Power Filter ◽  
Power Filter ◽  
Nonlinear Predictive Control

Shunt Active Power Filter with Solar Photovoltaic System for Long-Term Harmonic Mitigation

2019 ◽  
Vol 29 (05) ◽  
pp. 2050081
Author(s):  
P. Suresh ◽  
G. Vijayakumar
Keyword(s):  
Distribution Systems ◽  
Reference Signal ◽  
Active Power Filter ◽  
Active Power ◽  
Energy Output ◽  
Solar Photovoltaic ◽  
Shunt Active Power Filter ◽  
Power Filter ◽  
Harmonic Mitigation

This paper proposes a shunt Active Power Filter (APF), supported by Solar Photovoltaic (SPV) system for a grid-connected application that improves power quality. The reference signal for the shunt APF is obtained from the adaptive Proportional Integrative Derivatives (PID), based on an algorithm of Least Mean Eighth (LME) with Unit Vector Template (UVT). The LME algorithm distinguishes the basic weight sections from load currents and estimates the three phase reference source current. These reference currents are used to generate a gate signal for the shunt APF. The DC-link voltage regulator is used to keep the constant DC-link voltage of the shunt APF with an APID controller. To reduce present distortions of electric power distribution systems, a design of a suitable controller is conducted using an intelligent computational technique for predicting the right reference signals. The SPV scheme is designed to obtain the highest energy output from the SPV panel with the maximum power point tracking algorithm (MPPT) scheme and is connected to the power grid. For long-term harmonic mitigation, the SPV system continuously maintains the DC-link of the shunt APF. Mathematically, the presented current reference signal generation scheme is examined and digital simulation outcomes are displayed under distinct steady and dynamic state conditions. Lastly, the complete scheme is validated by using the hardware prototype.

scholarly journals Enhancement of Electrical Power Quality for Three phase AC System using fuzzy Logic Based Active Power Filter

2020 ◽  
Vol 6 (11) ◽  
pp. 1-6
Keyword(s):  
Fuzzy Logic ◽  
Power Quality ◽  
Fuzzy Logic Controller ◽  
Electrical Power ◽  
Reference Signal ◽  
Active Power Filter ◽  
Active Power ◽  
Power Filter ◽  
Current Controller ◽  
Three Phase

Active power filter, a good alternativeforeasing power quality problems. APF can provide an effective solution for the removal of hormonic current present in power system. The performance of shunt APF depends on technique used to generate reference current, controlling method used and topology of inverter under consideration. In this paper a fuzzy logic-based control scheme was presented to generate reference signal for hysteresis current controller of three phase VSI. Unit template based control algorithm for control signal generation and fuzzy logic controller was used to replace PI controller to improve performance. The proposed system is very much capable in maintaining and improving power quality at distribution side. The shunt APF performance was analysed with SIMULATION model under balanced condition and outcome obtained satisfactory in improving the power quality.

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