【作者】 区干生；

【导师】 容太平；

【作者基本信息】 华中科技大学 ， 电路与系统， 2004， 硕士

【摘要】 励磁控制器是励磁控制系统的重要组成部分,对电力系统的安全稳定运行有着十分重要的意义。随着大规模集成电路技术及计算机技术的发展,采用微处理器作为硬件控制核心的微机励磁控制器将成为今后励磁控制器的发展方向。随着励磁控制方法的不断改进与发展,对微机励磁控制器的运算速度和处理能力提出了非常高的要求。DSP(数字信号处理器)具有高速、卓越的数字信号处理能力以及丰富的外部扩展功能,使其应用领域从通信行业拓展到工业控制领域。本文就是在这种背景下,设计和实现以DSP为控制核心的微机励磁调节器。首先,本论文在讲述励磁调节系统在电力系统中所起的重要作用的基础上,详细阐述励磁调节系统的组成,励磁调节器的发展概况,以及微机励磁调节器的优点。说明励磁调节控制理论的发展使励磁调节器不仅具有调节电网电压稳定和无功功率调配的作用,而且具有调节电网稳定性的作用。同时,详细说明了微机励磁调节器的相关工作原理,为本设计采用智能选择PID(比例-积分-微分控制)+PSS(电力系统稳定器)和非线性最优控制的控制策略实现微机励磁调节器提供了必要的理论支持。其次,详述了用DSP实现微机励磁调节器的整个硬件平台的设计,包括电源和后备电源模块、采样模块、电平匹配模块、扩展SRAM和FLASH ROM模块、SCI和CAN(控制器区域网络)通信模块、键盘和LED显示模块等各个模块的详细设计。其后,讲述了与硬件对应的软件模块设计,包括SCI通信模块、CAN通信模块、PWM产生模块、FFT算法实现模块的详细设计。并实录产生的PWM脉冲和CAN通信传输的数据说明相关硬件和软件设计的可行性。最后,通过各种调试和仿真方法提取试验数据来进行分析。包括把DSP运算FFT算法的数据结果,与MATLAB仿真的数据结果对照分析;实录同步采样的数据;用MATLAB仿真PID控制算法,得到PID的整定参数,它们都证明了相关设计的有效性。本文从设计的理论和整体软、硬件的实现结果都说明用DSP实现微机励磁调节器的可行性和有效性,对今后的研究工作具有较大的意义。更多还原

【Abstract】 The excitation controller is the important component of the control system, and it has a significant meaning to the peace and steadiness of the power system. With the development of the large-scale integrated circuit and computer technology, the excitation controller in which the microprocessor is the core component will be the trend in the future. With the improvement and development in excitation’s control method, the higher request in operation and calculation ability of excitation controller is put forward. DSP (digital signal processor), which has high-speed, remarkable ability in digital signals processing and abundant external expanded function, make its application expand from communication trade to the industry-controlled field. Under this background, this thesis studies the design and implement of microcomputer excitation controller for synchronous generator based on DSP.First of all, on the basis of expatiating the important function that excitation system played in the power system this thesis explain the framework of excitation system and excitation controller, the development of them, and the advantage of the computer excitation regulator. Prove excitation control theory make excitation regulator not only regulate voltage stability and allocate inactive power, but also have function of regulating the stability of the power network. Meanwhile, the relevant operation principles of the microcomputer excitation regulator are shown, and they offer the essential theory supporting in intelligent adopting PID (Proportion Integral Differential) +PSS (power system stabilizer) and non-linear control strategy to realize microcomputer excitation regulator. Secondly, the research subject is concerning the design of he whole hardware platform realizing the computer excitation regulator with DSP, which including power and reserve power module, sample module, the level matches module, expand SRAM and FLASH ROM module, SCI and CAN communication module, keyboard and LED show module, etc. each detailed design of module. Thereafter, have told and designed with the corresponding software module of hardware, including SCI communication module, CAN communication module, PWM produced module, FFT algorithm realized module. And PWM pulse and CAN data from communication transmit that faithful record prove feasibility of the relevant hardware and software design. <WP=5>Finally, the test data is analyzed by use of different debug and simulation methods. Compare the data resulted from FFT algorithm operating in DSP with the data resulted from running in MATLAB and analyze them, draw data from simultaneous sampling that the faithful record, emulate PID Controlling algorithms with MATLAB, gets exactly parameter of PID. They have all proved the validity of the design. This paper is shown that it is feasibility and validity that implement microcomputer excitation controller for synchronous generator based on DSP from the theory and whole realization result of software and hardware. The research work is significant in the future.更多还原