CAJ | 학술논문

矩阵变换器较传统的变换器具有一系列优点而成为研究热点,随着其理论研究的接近成熟,逐渐转向应用研究.提出了一种新颖控制策略.通过磁链和转矩的PI调节,把矩阵变换器的空间矢量调制与异步电机的直接转矩控制有机地结合起米,改进了系统的控制性能,尤其是电磁转矩的低速性能.这种PI调节器相对简单和具有较强的鲁棒性,比较无差拍空间矢量调制而言.本文首先阐述了传统的直接转矩控制原理和矩阵变换器的空间矢量调制,接着利用磁链和转矩的PI调节,详细论述了两者的结合和实现过程,并且在此基础上,建立这种新型交流调速系统的仿真模型,最后按照3种负载情况进行了仿真研究.仿真结果验证了这种新颖控制策略的可行性和较强的鲁棒性.
구진변환기교전통적변환기구유일계렬우점이성위연구열점,수착기이론연구적접근성숙,축점전향응용연구.제출료일충신영공제책략.통과자련화전구적PI조절,파구진변환기적공간시량조제여이보전궤적직접전구공제유궤지결합기미,개진료계통적공제성능,우기시전자전구적저속성능.저충PI조절기상대간단화구유교강적로봉성,비교무차박공간시량조제이언.본문수선천술료전통적직접전구공제원리화구진변환기적공간시량조제,접착이용자련화전구적PI조절,상세논술료량자적결합화실현과정,병차재차기출상,건립저충신형교류조속계통적방진모형,최후안조3충부재정황진행료방진연구.방진결과험증료저충신영공제책략적가행성화교강적로봉성.
Matrix converter(MCP) has been studied widely for its advantages over the traditional converters.It is gradually employed for applications with its maturity in theoretical studies.A novel control strategy is put forward in this paper,which properly combines the space vector modulation of matrix converter with the direct torque control of induction machine through PI regulation of flux and torque.It improves the control performance of the system effectively,especially for the electric magnetic torque at low speed.This PI regulator is simpler and has better robustness compared with the deadbeat space vector modulation.First,conventional principles of DTC and space vector modulation of matrix converter were described.Then.the combination of the two was given in detail for PI regulator of flux and torque.Third,simulation model was set up for this new type of variable speed system.Finally,the simulation research was carded out for three types of loads.Simulation results have verified the feasibilities and strong adaptability of this novel control strategy,indicating that it is worth further studying.