两相混合式同步电动机的SVPWM控制

SVPWM CONTROL ON 2-PHASED HYBRID SYNCHRONOUS MOTOR

该文提出了一种基于H桥驱动的两相混合式同步电动机空间电压矢量脉宽调制(SVPWM)的控制策略。通过功率电路的拓扑结构介绍了控制策略的工作原理以及参数的确定方法,同时给出了SVPWM控制的约束条件。考虑到DSP的快速数据处理能力,采用了DSP作为主控单元并将输出信号进行了逻辑组合,从而实现了两相SVPWM功能。考虑到两相SVPWM实现的复杂性,采用S函数进行建模。采用SVPWM控制策略对两相混合式同步电动机进行控制,仿真及实验的结果表明该方法是切实可行的。

In this paper, a space-voltage vector pulse width modulation(SVPWM)method is presented based on the 2-phased hybrid synchronous motor driven by H bridge. The control principle and the method of determining parameter are introduced by the topology of the power circuit, and the basic constraint conditions are presented simultaneously. Considering the fast processing ability of the digital signal processor(DSP), the DSP is used as the main controlled unit. Through the logical combination of signals from the DSP, 2-phased SVPWM is realized. In view of the complexity of the 2-phased SVPWM, S function is utilized to establish simulation model. The SVPWM method is adopted to control the 2-phased hybrid synchronous motor, and results of simulations and experiments indicate the method is reliable.