基于DSP的HESG交流励磁控制系统的设计研究

发布时间：2018-11-10 15:55

【摘要】：永磁同步电机由于结构简单、重量轻、损耗小,效率高,功率因数高,力矩惯量比大,在工业领域得到广泛关注和应用。可是,永磁材料存在的固有特性,在永磁电机成品后其气隙磁场固定,针对永磁同步电机磁场调节困难等缺点,本课题组提出一种在永磁同步电机基础上加以改进创新的混合励磁结构同步发电机。论文对该机型的结构原理、数学模型进行了分析。电机硬件控制系统采用数字信号处理器(DSP)为控制核心,传统设计过程由于控制系统复杂,电路庞大,采用嵌入式芯片控制,程序代码开发困难,给设计人员带来很大难度。本文将基于模型设计方法引入研究当中,重点研究基于模型设计方法在电机控制系统设计中的应用。确定了混合励磁同步发电机控制系统的主要拓扑结构、控制策略后,采用MATLAB/Simulink软件建立控制仿真模型,仿真验证电机模型及其控制模型的准确性。之后采用了基于模型的设计方法建立控制模型,基于模型设计方法即用Simulink中TI C2000模块搭建电机的控制模型,实现基于TMS320F2812控制系统的快速开发,使得实验平台所需嵌入式C代码自动生成。基于模型设计方法的应用将传统相互孤立、间断的开发流程有机的结合起来。本文硬件实验平台是以TMS320F2812为核心的电机控制器,包括主电源,控制电源部分,主控CPU核心板,功率单元(IPM模块),电流电压检测模块,PWM脉冲隔离(高速光耦),论文对该实验硬件平台进行了详细研究。最后,为了验证基于模型设计方法自动生成代码的可靠性与可行性,论文以永磁同步电机磁场定向控制为例进行了实验验证,来说明在混合励磁电机样机研制完成之前采用基于模型设计方法的优势。实验主要工作包括建立控制模型,C代码自动生成,实验平台验证。论文的研究成果为混合励磁同步发电机的励磁控制器以及永磁同步电机等DSP控制器实现的便捷、高效、经济化奠定了坚实的基础。
[Abstract]:Permanent magnet synchronous motor (PMSM) is widely concerned and applied in industrial field because of its simple structure, light weight, low loss, high efficiency, high power factor and large torque inertia ratio. However, the inherent characteristics of permanent magnet materials are fixed in the air gap magnetic field after the permanent magnet motor is finished, and it is difficult to adjust the magnetic field of the permanent magnet synchronous motor. A hybrid excitation synchronous generator based on permanent magnet synchronous motor (PMSM) is proposed. The structure principle and mathematical model of this machine are analyzed in this paper. Digital signal processor (DSP) is used as the control core in the motor hardware control system. The traditional design process is very difficult for the designer because the control system is complex, the circuit is huge, the embedded chip is used to control, and the program code is difficult to develop. In this paper, the model based design method is introduced into the research, and the application of the model based design method in the motor control system design is emphasized. The main topology of the hybrid excitation synchronous generator control system is determined. After the control strategy is determined, the control simulation model is established by using MATLAB/Simulink software, and the veracity of the motor model and its control model is verified by simulation. Then the control model is established by using the model-based design method. The control model of the motor is built with the TI C2000 module in Simulink, and the rapid development of the control system based on TMS320F2812 is realized. So that the experimental platform needs embedded C code generation automatically. The application of model-based design method organically combines the traditional development process, which is isolated from each other and discontinuous. The hardware experiment platform of this paper is a motor controller with TMS320F2812 as the core, including main power supply, control power supply, main control CPU core board, power unit (IPM module), current and voltage detection module, PWM pulse isolation (high speed optocoupler). The hardware platform of the experiment is studied in detail in this paper. Finally, in order to verify the reliability and feasibility of automatic code generation based on the model design method, the paper takes the permanent magnet synchronous motor (PMSM) field oriented control as an example for experimental verification. The advantages of using the model-based design method before the development of the hybrid excitation motor prototype are illustrated. The main work of the experiment includes the establishment of control model, C code automatic generation, experimental platform verification. The research results of this paper have laid a solid foundation for the realization of the excitation controller of hybrid excitation synchronous generator and the DSP controller such as permanent magnet synchronous motor.
【学位授予单位】：华北电力大学
【学位级别】：硕士
【学位授予年份】：2015
【分类号】：TM341

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