摘  要：针对现有电压源逆变器(VSI)仿真模型的弊端，利用以开关信号、电流状态、PWM状态为自变量的多变量开关函数表构建电压源逆变器模型，并在Matlab环境下用S函数实现。该模型可通过C编译工具编译成windows可执行的动态链接库文件，极大提高系统仿真速度。并进行系统仿真证明了模型的有效性。理论分析和系统仿真均表明，该模型通用性强、稳定，明显加快系统仿真速度，可用于构建可靠、高效的系统仿真研究平台。
关键词：无刷直流电机；电压源逆变器；多变量开关函数；模型

Abstract: In this paper,a novel model for VSI using the multi-variable switching function concept was presented and realized with the help of Matlab S-function,solved long run-time problem with the developed model.At last,several informative simulation results verify the validity of the proposed model.
Key Words: Brushless DC ( BLDC) motor；VSI；Multi-variable switching function；Model