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Optimization Design of Control System for the Three-stage Brushless Generator Units and Intelligent Control Research

Author: ZhangQin
Tutor: ZhangHuaGuang
School: Northeastern University
Course: Power Electronics and Power Drives
Keywords: The three brushless generator group Excitation Control System TMS320F2812 Fuzzy self-tuning PID control
CLC: TM31
Type: Master's thesis
Year: 2009
Downloads: 30
Quote: 0
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Abstract

In recent years, with the changes in the worldwide energy and power demand structure, as well as environmental protection requirements, Micro-turbine power generation technology has been highly concerned about the power, energy and other departments. Due to its high energy conversion efficiency, environmental pollution, as a typical and realistic power system powered solutions have been widely accepted. Three brushless generator set is widely used in the Micro-turbine generator sets a structure, a direct impact on the operational performance of the generator excitation control system design. The rapid development of modern control theory and computer technology for in-depth study of digital excitation control system provides a theoretical and material basis, also accelerated the pace of development of the digital excitation control system. Digital excitation control system have been gradually replaced analog excitation control system into the mainstream of the synchronous generator excitation control system. Control method from the traditional PID control to intelligent control development. Paper It is in this context that the three brushless Micro-turbine synchronous generator excitation control system developed in cooperation with Northeastern University and Shenyang Aerospace Xinguang Group for the study, made on the development of digital excitation control system optimization and improvement. The main work of this paper are: (1) detection of the phase sequence of the three-phase AC generator output and system software for the original system can not encounter the fault can not be reset automatically, the paper presents a DSP implementation based on the three-phase AC source The phase sequence detection method and software multi-point monitoring watchdog reset function. (2) The system can not bare the the burning procedures JATE mouth requirements, ingenious thesis writing the program to use a serial SCI communication the mouth instead JATE mouth. In addition, the paper also proposes a solution based on the the serial SCI communication port software encryption method, the protection of intellectual property rights issues. (3) for the original system software code redundancy and unstable operation, the paper their optimized not only improve the efficiency in the implementation of the system code and system software to run more stable. In addition, the paper also proposed two code execution efficiency of the test program. (4) for the original system uses a simple PID excitation controller design effect can not fully meet the requirements of project In this paper, the integral separation PID control theory and incomplete derivative PID control theory, the optimized design of the original system of excitation controller and satisfactory control effect on the actual operation of the unit. (5) for nonlinear controlled object and time variability, proposed a fuzzy self-tuning PID excitation control strategy and the use of fuzzy mathematics theory to calculate the fuzzy control table, offline calculation online look-up table of fuzzy control mode, saving a lot of system resources. MATLAB simulation verification fuzzy self-tuning PID controller has better control effect than the conventional PID controller provides a theoretical basis and technological foundation for the upgrading of the project.

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CLC: > Industrial Technology > Electrotechnical > Motor > Generators, large the generator group ( Zonglun,)
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