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Development of High Power Three Phase APFC Base on DSP

Author: LiQingBing
Tutor: YangZeFu
School: Huazhong University of Science and Technology
Course: Theory and New
Keywords: Harmonic Active Power Factor Correction Space Vector Pulse Width Modulation DSP
CLC: TM714.1
Type: Master's thesis
Year: 2009
Downloads: 91
Quote: 0
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Abstract


The disadvantages of the traditional rectifiers bring harmonic current to the power system, which pollutes utility system, catches more and more eyes. For improving the traditional AC/DC converter, increasing the power factor and eliminating the harmonic pollution, people has brought forward a lot of methods. Active-Power-Factor-Correction (APFC) techniques have received more attention in recent year, which can reduce the consumption of energy, improve the quality of supply and eliminate the current harmonic, So it is very important to us. Now, single-phase APFC technology is applied in many devices and three-phase APFC rectifiers are preferred and economical for high power application, so it is the focus of study at home and aboard.In this thesis, high power three phase APFC based on DSP is described. At first, the background and status of the topic, and the technique data of the device is introduced, then the integral structure, fundamental principle and mathematical model of this system are discussed. the system current control methods, that is grid voltage and current feed-forward decoupling current control methods is brought forward and described, what is more, the Hysteresis SVPWM current control and the Prediction current control is presented, the simulation research of the grid voltage and current feed-forward decoupling current control methods is done though using the Simulink of Matlab7.0.According to the requirement of project, on the basis of the theoretical analysis and simulation, the main circuit of system and hardware circuit of controller based on DSP are designed and the programmer code is finished in C language.In the paper, the test data’s of the experiment are given. the result shows that the instrument adapts the design requirement and it is valuable to project.At the end of the paper, it proposes that some troubles and solutions during the work, the main problem need to improve and the aspects need to research deeper.

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CLC: > Industrial Technology > Electrotechnical > Transmission and distribution engineering, power network and power system > Theory and Analysis > Load analysis > Load power factor to improve
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