多相感应电动机的SHEPWM控制原理及仿真分析

针对潜艇直流供电系统中直流幅压电动机运行中存在的问题,提出了一体化多相逆变器-感应电动机替代方案。为了抑制蓄电池供电时直流电压幅值变化对电动机运行性能的影响,引入了SHEPWM技术对逆变器的输出电压进行恒压控制。该方案以双Y移30°感应电动机和逆变器为研究对象进行了仿真分析,结果表明:该方案在起动、恒压、抑制转矩脉动等方面有较好的效果,适合对运行可靠性和稳定性有较高要求、但对动态性能要求不高的各类潜艇辅机的驱动。

SHEPWM control principle and simulation of multi-phase induction motor

In order to deal with the operation of the traditional DC motor with commutator in a submarine,a scheme of integrating the multi-phase inverter and the induction motor which are used in the power system supplied by storage batteries was proposed to replace the traditional DC motor.Aimed at the adverse influence on the driving system of the batteries,a method was presented for stabilizing the output voltage based on SHEPWM technique.A model of the dual Y shifted 30°induction motor and the inverter was established for simulation and analysis.The results show that the proposed scheme is effective in starting control,voltage stabilization and pulsing torque reduction and probably fit for auxiliary mechanical devices of high reliability and stability in a submarine.