双三相永磁同步电机控制策略研究

发布时间：2018-11-18 16:46

【摘要】：在对功率等级、调速性能以及可靠性要求较高的场合,传统的三相电机由于其本身的限制,无法满足实际需求,而多相电机因其具有可低压实现大功率、转矩脉动较小以及可靠性高等优点,可广泛地应用于各种高要求场合,例如船舶电力推进系统以及电动车牵引系统等。由于市场的需求,越来越多的学者投入到多相电机驱动控制系统的研究中。本文以双三相双Y型相移30°绕组的永磁同步电机为研究对象,对其控制策略进行了深入研究。论文首先介绍了双三相永磁同步电机在自然坐标系下的数学模型,然后通过双d-q变换以及空间电压矢量解耦变换,得到其在旋转坐标系下的两种数学模型。并在空间电压矢量解耦的基础上,研究了六相系统的空间电压矢量分布以及最大四矢量SVPWM调制技术,在此基础上,研究了双三相永磁同步电机的矢量控制策略,并在Matlab/Simulink系统中对其进行仿真研究。接下来针对电机运行时定子谐波电流较大的问题,在z1-z2子平面中引入了比例谐振调节器(PR调节器),并通过仿真验证了其有效性。其次,针对SVPWM控制策略中得到的PWM波形不对称以及在每个PWM周期内功率器件开关次数较多的问题,提出了双三相永磁同步电机双零序注入PWM控制策略,并在Matlab/Simulink系统中搭建了仿真模型验证了该控制策略的有效性。最后,给出基于TMS320F28335的双三相永磁同步电机控制系统的设计方案,并研制出一套双三相永磁同步电机驱动系统硬件平台,在该平台上编写实验程序,对上述控制策略进行加载实验,实验结果与仿真结果相符,证明了上述控制策略的有效性及实用性。
[Abstract]:The traditional three-phase motor can not meet the actual demand because of its own limitations, while the multi-phase motor can achieve high power at low voltage because of its low voltage and high power because of its high demand for power grade, speed regulation and reliability, and the traditional three-phase motor is unable to meet the actual demand due to its own limitations. Due to the advantages of small torque ripple and high reliability, it can be widely used in various high demand situations, such as marine electric propulsion system and electric vehicle traction system. Due to the demand of the market, more and more scholars are engaged in the research of multiphase motor drive control system. In this paper, the control strategy of permanent magnet synchronous motor (PMSM) with double phase and double Y phase shifting 30 掳windings is studied. In this paper, the mathematical model of double three phase permanent magnet synchronous motor in natural coordinate system is introduced, and then two kinds of mathematical models are obtained by double d-q transformation and space voltage vector decoupling transformation. Based on the decoupling of space voltage vector, the space voltage vector distribution and the maximum four-vector SVPWM modulation technology of six-phase system are studied. Based on this, the vector control strategy of dual-three-phase permanent magnet synchronous motor (PMSM) is studied. And it is simulated in Matlab/Simulink system. Secondly, the proportional resonant regulator (PR) is introduced into the z1-z2 subplane to solve the problem of large stator harmonic current in the motor running, and its effectiveness is verified by simulation. Secondly, aiming at the asymmetry of PWM waveform obtained from SVPWM control strategy and the large number of switching times of power devices in each PWM cycle, a double-zero-sequence injection PWM control strategy for dual-phase PMSM is proposed. A simulation model is built in Matlab/Simulink system to verify the effectiveness of the control strategy. Finally, the design scheme of dual three phase permanent magnet synchronous motor control system based on TMS320F28335 is given, and a hardware platform of dual three phase permanent magnet synchronous motor drive system is developed. The experimental results are in agreement with the simulation results, which prove the effectiveness and practicability of the control strategy.
【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】：2017
【分类号】：TM341

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