SVPWM供电矢量控制仿真

SVPWM Power Vector Control Simulation

对电压空间矢量调制技术(SVPWM)供电的三相感应电机矢量控制系统进行了实时场路耦合有限元仿真研究,利用Ansoft公司的Maxwell软件和Simplorer软件分别对感应电机和控制系统进行了基于场的和基于路的仿真计算,即Maxwell软件进行电机部分仿真,Simplorer软件进行控制电路部分仿真,通过联合仿真组成了完整的仿真系统,验证了应用SVPWM技术和矢量控制技术的交流调速系统的优良性能。首先对SVPWM供电技术、矢量控制技术以及实时场路耦合有限元仿真方法进行了介绍。然后,针对仿真模型的搭建步骤,逐一进行了分析,给出了具体的解决方法。最后,运行仿真模型得到了仿真结果,并对结果进行了分析,得出了由SVPWM供电的矢量控制系统具有快速的动态响应、微小的转矩波动、平稳的速度运行等一系列的优良动、静态运行性能的结论。除了对研究对象优良的性能进行了验证,本文采用的研究方法也是一种新的尝试,实时场路耦合有限元方法因为其仿真的准确性正在成为业界广泛采用的一种新的仿真方法。

In this paper, a 3-phase induction motor model for simulation of field oriented control system based on space vector pulse width modulation was established in Ansoft/Simplorer software. The theory of field oriented control and the principle of space vector pulse width modulation were introduced. The key problems were analyzed and the main results of simulation were given. The simulation results indicated that this system had quick response speed, small fluctuations of torque,and good performance both in steady and dynamic states. A Simnlink simulation of field oriented control system was given as a comparison under the same conditions. What＇ s more, this simulation model can be coupled with the finite element motor model in order to achieve field-circuit coupling simulation of induction motor field oriented control system, thus to guide the establishment and debugging of the actual motor control system.