鱼雷推进用无传感器无刷直流电机动态性能分析

　　鱼雷推进用无传感器无刷直流电机动态性能分析
　　Due to high efficiency, excellent speed-adjustability, and high reliability, the high-power permanent-magnet brushless DC motor drive system has applied in the domains as ships, aircrafts and so on, where the attention is firstly paid to the running efficiency and feasibility of drive system.The dissertation proposes a speed-adjusting controller which applied to a large power capacity rare earth permanent magnet sensorless brushless DC motor (SLBLDCM). The dissertation discusses the stepless speed-adjusting technic about torpedo drive motor, and the developing state Ball Neodymium Magnets of BLDCM .Considering the feature of the torpedo driver motor and the engineering application, the system scheme, the hardware and software of SLBLDCM are designed. Then, the operational principles of BLDCM and the PWM speed-adjusting theory are analyzed. Additional, the operational theory of the 2-phase feed up, all bridge star style 3-phase 6 states BLDCM system with 3 pair poles are analyzed. The mathematics model and the Stable state model of BLDCM system are abolished.Basing on key-technology issues which are faced in the course of BLDCM control system ①rotor position detection Basing on other approach to detect rotor position, we design a new approach to compensate larger scope phase and a way to detect rotor position.②starting technique,basing on the http://www.chinamagnets.biz/Neodymium/Ball-Neodymium-Magnets.php very difficult examination problem when the EMF of SLBLDCM is lower,we proposed a starting technique, which is enhance the frequency and the voltage simultaneously .And this method has solved this problem well. ③torque ripple, we analyse the torque ripple due to the exchange phase and the effect of the pulse Width Modulation, and we suggested a new PWM modulates method (PWM-ON-PWM) .Through to calculation of torque ripple under this kind of pattern modulation We obtains this is one very good solution this question PWM modulation method. Based on the above research, hardware and software of a control subsystem are designed ,which use the TMS320LF2407.