A novel hysteresis current controller for active power filter with constant switching frequency

2002 ◽  
Author(s):  
Jiang Zeng ◽  
Lianwei Jiao ◽  
Yixin Ni ◽  
Shousun Chen ◽  
Baolin Zhang ◽  
...  
Keyword(s):  
Active Power Filter ◽  
Active Power ◽  
Switching Frequency ◽  
Power Filter ◽  
Current Controller

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.

A Novel Three-Phase Current Source Active Power Filter

2014 ◽  
Vol 667 ◽  
pp. 383-389
Author(s):  
Yu Xiong ◽  
Yu Ling Li ◽  
Yan Ping Guo ◽  
Bo Yang
Keyword(s):  
High Power ◽  
Current Source ◽  
Active Power Filter ◽  
Active Power ◽  
Switching Frequency ◽  
Current Harmonic ◽  
Power Filter ◽  
High Switching Frequency ◽  
Harmonic Components ◽  
And Control

A novel topology for efficient utilization of parallel inverters as current source active power filter (APF) for high-power applications is presented and analyzed. The proposed technique operates the master inverter with high-power low-switching-frequency devices to compensate the low-order large-amplitude current harmonic components and the slave inverter with low-power high-switching-frequency devices to compensate the high-order small-amplitude current harmonic components. This paper discusses the operating principle, main circuit and control system design. Simulation and experimental results are provided to demonstrate the viability of the scheme.

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