自由活塞式斯特林发电机控制系统的研究
发布时间：2018-11-06 20:29
【摘要】：在航天电源中，自由活塞斯特林发动机(Free Piston Stirling Engine，FPSE)因其燃料来源广，噪音低，污染少，效率高等优点，越来越受到人们的关注。FPSE发电系统由FPSE和单相永磁直线振荡电机两部分组成，此系统省去了曲轴连杆机构，具有效率高，运转特性好，结构简单等优点。因此，本文所研究的应用于此系统的控制器具有重要的现实意义。本论文从以下几个方面对FPSE发电机控制系统进行详细研究： 首先，对FPSE发电系统的工作原理进行分析，分别建立FPSE的动力学模型和单相永磁直线振荡电机的数学模型，并根据其数学模型在Matlab/Simulink软件中建立其仿真模型，根据FPSE和永磁直线电机参数对其仿真模型进行验证，为控制系统的研究提供理论依据。 其次，对FPSE发电机不同工作阶段的控制策略进行研究。在FPSE发电机的起动阶段和发电阶段都采用行程、电流控制，并研究了基于反电势自传感位置检测的基本原理及改进方法，在Matlab/Simulink软件中建立FPSE发电机控制系统的仿真模型，对整体系统进行仿真验证，仿真结果验证了控制策略和位置估算算法的可行性。 再次，对FPSE发电机控制系统硬件和软件进行设计。其中主控制器采用TI公司的DSP TMS320F2812，位置检测采用自传感技术，即根据电机自身的电磁关系估算出动子位置，此方法具有可靠性高、成本低及易于维修等优点。 最后，搭建实验平台，对系统进行实验。用三相直线电机代替FPSE作为原动机，分别验证了电动阶段和发电阶段控制策略的可行性。给出了实验测试数据及波形并对其进行分析及处理，实验表明本文研究的控制器能够基本达到预期要求。
[Abstract]:In the space power supply, (Free Piston Stirling Engine,FPSE (Free Piston Stirling engine) has the advantages of wide fuel source, low noise, low pollution, high efficiency and so on. The FPSE power generation system is composed of FPSE and single-phase permanent magnet linear oscillation motor. This system saves the crankshaft linkage mechanism and has the advantages of high efficiency, good operation characteristics and simple structure. Therefore, the controller studied in this paper has important practical significance. In this paper, the FPSE generator control system is studied in detail from the following aspects: firstly, the working principle of FPSE generator system is analyzed, and the dynamic model of FPSE and the mathematical model of single-phase permanent magnet linear oscillation motor are established, respectively. According to its mathematical model, the simulation model is established in Matlab/Simulink software, and the simulation model is verified according to the parameters of FPSE and permanent magnet linear motor, which provides a theoretical basis for the research of control system. Secondly, the control strategy of FPSE generator at different working stages is studied. The stroke and current control are adopted in the starting and generating stages of FPSE generator. The basic principle and improved method of self-sensing position detection based on reverse EMF are studied, and the simulation model of FPSE generator control system is established in Matlab/Simulink software. The simulation results of the whole system verify the feasibility of the control strategy and the position estimation algorithm. Thirdly, the hardware and software of FPSE generator control system are designed. The main controller uses the self-sensing technology of DSP TMS320F2812, position detection of TI company, that is, estimating the position of the actuator according to the electromagnetic relation of the motor itself. This method has the advantages of high reliability, low cost and easy maintenance. Finally, the experiment platform is built and the system is tested. Three phase linear motor is used instead of FPSE as prime mover to verify the feasibility of control strategy in electric stage and generation stage respectively. The experimental data and waveform are given and analyzed and processed. The experimental results show that the controller studied in this paper can basically meet the expected requirements.
【学位授予单位】：哈尔滨工业大学
【学位级别】：硕士
【学位授予年份】：2014
【分类号】：V442;TM31
本文编号：2315382
[Abstract]:In the space power supply, (Free Piston Stirling Engine,FPSE (Free Piston Stirling engine) has the advantages of wide fuel source, low noise, low pollution, high efficiency and so on. The FPSE power generation system is composed of FPSE and single-phase permanent magnet linear oscillation motor. This system saves the crankshaft linkage mechanism and has the advantages of high efficiency, good operation characteristics and simple structure. Therefore, the controller studied in this paper has important practical significance. In this paper, the FPSE generator control system is studied in detail from the following aspects: firstly, the working principle of FPSE generator system is analyzed, and the dynamic model of FPSE and the mathematical model of single-phase permanent magnet linear oscillation motor are established, respectively. According to its mathematical model, the simulation model is established in Matlab/Simulink software, and the simulation model is verified according to the parameters of FPSE and permanent magnet linear motor, which provides a theoretical basis for the research of control system. Secondly, the control strategy of FPSE generator at different working stages is studied. The stroke and current control are adopted in the starting and generating stages of FPSE generator. The basic principle and improved method of self-sensing position detection based on reverse EMF are studied, and the simulation model of FPSE generator control system is established in Matlab/Simulink software. The simulation results of the whole system verify the feasibility of the control strategy and the position estimation algorithm. Thirdly, the hardware and software of FPSE generator control system are designed. The main controller uses the self-sensing technology of DSP TMS320F2812, position detection of TI company, that is, estimating the position of the actuator according to the electromagnetic relation of the motor itself. This method has the advantages of high reliability, low cost and easy maintenance. Finally, the experiment platform is built and the system is tested. Three phase linear motor is used instead of FPSE as prime mover to verify the feasibility of control strategy in electric stage and generation stage respectively. The experimental data and waveform are given and analyzed and processed. The experimental results show that the controller studied in this paper can basically meet the expected requirements.
【学位授予单位】：哈尔滨工业大学
【学位级别】：硕士
【学位授予年份】：2014
【分类号】：V442;TM31
【参考文献】
相关期刊论文 前3条
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3 夏永明;叶云岳;董林海;卢琴芬;;新型双定子动磁式直线振荡电机[J];电机与控制应用;2007年04期
，本文编号：2315382
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