基于S-function的DSP模拟仿真研究及应用

针对传统电力电子控制系统设计方法的不足,提出了一种基于S-function的DSP模拟仿真的方法。该方法利用S-function模块模拟DSP的功能进行仿真,避免了用分离元件搭建控制系统,并且S-function代码可直接用于DSP程序。将该方法用于中点箝位型(NPC)三电平逆变器控制系统的设计中,仿真及实验的结果表明,该方法提高了设计的效率,降低了仿真与实验的差异性。

Research and Application on Simulation of DSP Based on S-function

Aiming at the disadvantages of traditional power electronic control system design,this paper proposes a novel method of simulating DSP based on S-function.The S-function module is set up to simulate the functions of DSP,which avoids building control system with discrete components.Besides,S-function code can be used directly for DSP program.Taking NPC three-level inverter for example,the method is applied to design its control system.Simulation and experimental results show that efficiency of design is improved and differences between simulation and experiment are reduced.