双凸极电励磁发电机系统非奇异终端滑模控制器的设计与仿真

Design and simulation of nonsingular terminal sliding mode controller for doubly salient electromagnetic generator system

针对双凸极电励磁发电机调压系统,提出了一种非奇异终端滑模控制的调压控制策略。介绍了双凸极电励磁发电机的结构,并构建了数学模型。在此基础上,详细分析了基于非奇异终端滑模控制的调压器工作原理,给出了相应的滑模面方程与滑模控制律。通过李雅普诺夫稳定性方程和固定PWM控制载波交截等限制条件,给出了控制律系数的计算选取方法。基于电磁有限元瞬态分析技术与控制电路构建了"场-路"联合仿真系统,并对发电机的稳态与动态运行性能进行了仿真,结果表明基于非奇异终端滑模控制的双凸极电励磁发电机调压系统具有良好的稳态性能和优良的动态特性,具有输出电压静差和纹波小、动态恢复时间短和动态输出电压变化小的优越性能。

A strategy of nonsingular terminal sliding mode control is proposed for the voltage regulation system of DSEG（Doubly Salient Electromagnetic Generator）. The structure of DSEG is described and its mathematical model is established,based on which,the operating principle of voltage regulator based on proposed control strategy is analyzed in detail and the corresponding sliding mode surface equation and sliding mode law are given. The control law parameters are calculated according to the constraint conditions of Lyapunov stability equation and the carrier wave intersection with fixed PWM control. A field-circuit co- simulation model is built based on the electromagnetic finite element analysis technique and the control circuit. The results of steady-state and dynamic simulations for DSEG show that,the voltage regulation system of DSEG based on the nonsingular terminal sliding mode control has excellent steady-state and dynamic performances,with small voltage ripple,short recovery time and little dynamic output voltage variation.