摘要
为了克服传统串级调速功率因数低及能量损耗大等固有缺点,提出了一种基于状态反馈解耦附加PI控制策略的改进型串级调速系统。深入分析了电压型PWM逆变器数学模型,并对所采用的控制策略的数学表达式进行了详细推导。加之斩波电路的IGBT选用的转速与电流双闭环PI控制,最终得到了系统控制图。最后在MATLAB/Simulink软件中进行了仿真。仿真结果证实,该控制策略不仅具有良好的动态、静态特性,而且能够实现提高功率因数、减少谐波及节约能源的目标。
In order to overcome the inherent shortcomings of traditional cascade speed control low power factor and high energy loss, a voltage type PWM cascade speed control system based on state feedback decoupling additional PI was proposed. The mathematical model of voltage type PWM inverter was deeply analyzed, and the mathematical expressions of the state feedback decoupling additional PI was derived in detail. In addition the chopper circuit IGBT selection of the speed current double closed loop PI control, the control chart of the system was obtained. Finally the simulation was proceeded by the MATLAB/Simulink software. The results proved that the control strategy not only had good dynamic and static characteristics, but also could achieve the purpose of improving power factor, reducing harmonic and saving energy.
作者
王瑜瑜
刘少军
王曙霞
Wang Yuyu Liu Shaojun Wang Shuxia(Xi＇an Aeronautical Polytechnic Institute, Xi＇an 710089,China)
出处
《电子测量技术》
2017年第9期26-30,共5页
Electronic Measurement Technology
基金
院级自选综合科研项目(16XHKY-009)资助
