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Research on the Digital Control System for 400Hz Inverter Based on Repetitive Control

Author: LuShuai
Tutor: LiMinYuan
School: Xi'an University of Technology
Course: Pattern Recognition and Intelligent Systems
Keywords: Repetitive Control Multi- loop feedback Digital Control Inverter
CLC: TM464
Type: Master's thesis
Year: 2009
Downloads: 106
Quote: 0
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Abstract


With the rapid development of modern technology , power inverter and more widely . Meanwhile, the performance of various industries on the inverter also put forward higher requirements. In power electronics technology has been very mature , the power electronics technology AC waveform precise control of power electronics technology research hot spots. Inverter goal is any load conditions, especially with the non-linear loads, the output waveform requires not only have high steady-state performance , there should be quickly dynamic response. Single control strategy is difficult to satisfy both requirements. Therefore, among the various control strategies from each other, mutual penetration , constitutes a new controller is a trend today lies. This paper studies the inverter control theory, analysis of the characteristics of several conventional control scheme for digital inverter output voltage waveform distortion problem , using a repetitive control technology solutions , and for the repetitive control their own problems , the introduction of the RMS voltage instantaneous value of outer and inner capacitor current control technology . Inhibition of repetitive control system utilizes non-linear load voltage distortion ; outer loop control using the voltage rms amplitude ; instantaneous value of the use of capacitive current feedback control to accelerate mutation load dynamic response , thus constituting a multi-loop feedback control . The program can ensure that the system has a faster dynamic response , high steady precision , the output voltage harmonic distortion is small, and the use of the MATLAB SIMULINK, ORCAD other simulation software to build simulation model simulation analysis, validation of multi -loop feedback control system and its feasibility and effectiveness of digitization . Based on the practical application of engineering with the specific requirements of the power system , the paper TI's TMS320F2812DSP as the main chip , based on repetitive control 400Hz, 115V three-phase inverter power digital control system implementation study to achieve good dynamic performance and steady-state performance , and meet the phase difference of 120 degrees phase . Experimental results show that : Based on the repetitive control loop feedback control multiple fully digital inverter get a good engineering practice operating results.

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CLC: > Industrial Technology > Electrotechnical > Transformers, converters and reactors > Converter > Inverter
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