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The non-linear devices used in the present environment like computers, printers, lasers, smps, rectifiers etc. pollutes the power system by harmonics and reactive power. Due to the presence of harmonics in the power system a number of undesirable effects caused in the distribution network. To find the solution for this the active power filter (APF) is one of the suitable solutions, which compensates...
This paper presents a single phase shunt active power filter based on instantaneous power theory. The active filter will be connected directly to utility in order to reduce THD of load current, in this case the utility is TNB. The instantaneous power theory also known as p-q theory is used for three phase active filter and this paper proves that the p-q theory can also be implemented for single phase...
This paper presents a comparative study through simulations of two different controllers for generation of PWM pulses for an Active Power filter namely Hysteresis Current Control and State Vector Pulse Width Modulation. A synchronous reference frame based controller for three phase three wire voltage source active power filter has been selected for the study. Constant capacitor voltage technique is...
Base on the characteristics of the shunt active power filter, we uses the power electronic devices of the MATLAB/Simulink to model the system, uses self-compiled S-function to carry out the ip-iq current detection algorithm. In order to compensate the harmonic currents generated by the non-linear load and the reactive power of the process, the PWM signal is generated to drive the IGBT by the way of...
An active power filter (APF)based on digital signal processor (DSP) and complicated programming logic component (CPLD) is designed in this paper. Solft and hard wares are introduced and the simulation experiment to compensate the reactive power and harmonics in three-phase four-wires system is done. By using Matlab. simulation model is build for the device. The result shows that this model can restrain...
This paper analyzes the basic control principle of space vector PWM combined with hysteresis, and applies this method to control the Parallel Active Power Filter (APF). The simulation results through Matlab show that the output compensation current at any time can be real-time tracking the instruction current of the APF to reduce the current compensation error effectively, and eliminate the harmonic...
In this study, a novel sinusoidal PWM Switched Power Filter (SPF) and Dynamic Voltage Compensation (DVC) scheme using VSC/SMC/B-B controller for power mitigation and quality enhancements in medium power distribution systems are simulated. The system is based upon a stand-alone Wind Energy Conversion Scheme (WECS) using an induction generator and the proposed system control mechanisms, which are digitally...
In this paper, the design procedures of a unity power factor pulse width modulated (PWM) rectifier and shunt active power filter (APF) using MATLAB/Simulink blocksets and code generation tools for TMS320F2812 fixed-point digital signal processor (DSP) is presented. A systematic design approach is given to develop a rapid prototype system in a reliable procedure. The design procedure uses Simulink...
A single-phase AC-to-DC converter using modified series-parallel resonant converter (MSPRC) in conjunction with active power filter (APF) is presented for improvement of power factor on input AC line. The pulsating DC voltage obtained from the single phase uncontrolled diode bridge rectifier is applied to high frequency full bridge configuration of the MSPRC. For high power factor operation small...
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