稀土永磁无刷直流鱼雷推进电机控制系统设计研究

【作者】 袁林兴；

【导师】 焦振宏；

【作者基本信息】 西北工业大学 ， 电力电子与电力传动， 2006， 硕士

【摘要】 论文研究了大功率稀土永磁无刷直流鱼宙推进电机(BLDCM)控制系统的关键技术，完成了BLDCM控制系统的软硬件设计。 论文综述了鱼雷推进电动机无级变速技术和无刷直流电动机的发展现状以及有待深入研究的主要问题；针对鱼雷推进电动机的特点，从工程应用的角度出发，设计了BLDCM控制器系统方案和硬件组成；详细分析了两相导通全桥星形三相六状态工作方式的3对极BLDCM系统的工作原理和PWM调速原理，建立了BLDCM系统的稳态和动态数学模型；针对大功率BLDCM控制系统中面临的关键技术：①转矩脉动，分析了电流换相引起的转矩脉动的原因及其PWM调制模式对转矩脉动的影响，提出了一种直接面向转矩脉动的转矩脉动补偿方法：②最佳换相，分析了电枢反应对大功率BLDCM负载运行中气隙磁势、相绕组反电动势和换相位置的影响，提出了一种新的动态的实现方法；在以上研究的基础上，完成了基于TMS320LF2407A的控制子系统硬件设计：PWM信号辅助电路、BLDCM位置检测电路等等；根据硬件设计，给出了控制流程和主循环流程，以及转速闭环PI控制、PWM调制模式、逻辑换相和最佳换相等关键性技术的DSP实现方法。更多还原

【Abstract】 The dissertation discusses the key-technology about a control system project which applied to a large power capacity rare earth permanent magnet brushless DC motor(BLDCM),designs the hardware and software of the BLDCM control system.The dissertation discusses the stepless speed-adjusting technic about torpedo drive motor, and the developing state of BLDCM .Considering the feature of the torpedo driver motor and the engineering application,we design.the system scheme, the hardware of BLDCM Then, analyzes the operational principles of BLDCM and the PWM speed-adjusting theory.Additional, analyze the operational theory of the 2-phase feed up, all bridge star style 3-phase 6 states BLDCM system with 3 pair poles, then,set up the steady and dynamic mathematics model of BLDCM system.Basing on key-technology issues which are faced in the course of BLDCM control system,? torque ripple:we analyse the torque ripple due to the exchange phase and the effect of the pulse Width Modulation , we present a method to compensate torque ripple, which is directly faced torque ripple. (2) optimal commutation : we analyze the armature reaction that act up on air gap magnetic potential , the back electromotive force(BEF) of the phase windings and the optimal inversion position , and propose a new dynamic implement method . Based on the above research, we design the hardware of a control subsystem :such as PWM singal assistant circuit,BLDCM rotor position detect circuit.Based on the hardware design , we propose that the control-flow analysis, and main loop flow, and the DSP implementation method of the rotation speeds closed loop of PI controller, PWM mode, optimal versus logistic commutation ect. which use the TMS320LF2407A.更多还原