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Research on Power System Harmonic Suppression Based on DSP

Author: TangRuiLi
Tutor: XiZiQiang
School: Hubei University of Technology
Course: Power Electronics and Power Drives
Keywords: APF Embedded Systems Power Quality Harmonic suppression
CLC: TM711
Type: Master's thesis
Year: 2010
Downloads: 210
Quote: 1
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Abstract


With the development of modern industrial technology , power systems of nonlinear loads increased significantly. Various non-linear loads such as inverters , rectifiers and a variety of large-scale applications such as switching power grid makes a lot of harmonics injected , resulting AC grid voltage and current waveforms in a serious distortion , has now become the most important harmonic wave source . Comprehensive management of power quality has become a modern electric power development will inevitably lies. Active power filter (APF: Active Power Filter) is an ideal harmonic current generator , it changes the frequency and amplitude of the harmonics are tracking compensation , and the compensation characteristics of grid impedance is not possible to dynamic compensation , filtering characteristics of a good , harmonic in governance plays an important role. This paper first introduces the principle of APF , based on this principle presents a DSP-based control of active power filter design, focused on harmonic detection and system control hardware design and software design of DSP . Based on this set of embedded power quality monitoring device consists of signal conditioning, smart power integrated chip IPM, DSP and other peripheral circuit, with powerful data acquisition and processing capabilities, can accurately measure the harmonic and event management within the DSP applications generates a PWM waveform be effectively suppressed. In order to achieve this the algorithm used and the control strategy , the establishment of TMS320F2812 as the core of high-speed digital signal processing control platform. And on this platform, designed on the basis of the system control circuit , in the experimental prototype for harmonic compensation experiment. The results demonstrate that the proposed harmonic detection method and the correctness and feasibility of control strategies , the basic requirements to achieve harmonic suppression . In this paper, based on TI's high-performance DSP chip TMS320F2812 Active Power Filter System (APF), designed for high-order harmonic real power compensation of a device , including real-time information network detection, data acquisition, and then the FFT algorithm data and processed to obtain the harmonic components , while according to its corresponding FFT harmonic suppression algorithm for three-phase voltage and current compensation and power system protection , and finally through simulation and experimental validation of the feasibility of the proposed method .

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CLC: > Industrial Technology > Electrotechnical > Transmission and distribution engineering, power network and power system > Theory and Analysis > Network analysis,power system analysis
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