基于预测控制开关磁阻发电机输出电压优化

Output Voltage Optimization of Switched Reluctance Generator Based on Predictive Control

为提高飞机开关磁阻电机起动/发电系统输出电压的品质,抑制输出电压脉动,在分析影响开关磁阻发电机(Switched Reluctance Generator,SRG)输出电压脉动的因素基础上,提出了一种基于目标状态方程的开关磁阻发电机非线性预测控制方法。首先,根据建立的开关磁阻发电机非线性数学模型,结合预测控制理论,设计开关磁阻发电机非线性预测控制器;其次,为减小外部扰动对输出电压的影响,设计扩展状态观测器;最后,仿真验证算法的效果。仿真结果表明,与PID控制相比,非线性预测控制使开关磁阻发电机输出电压稳定,鲁棒性好。

In order to improve the quality of the output voltage of the arc-transformer motor starting/power generation system and suppress the output voltage ripple, based on the analysis of the factors affecting the output voltage ripple of the switched reluctance generator(Switched Reluctance Generator, SRG), a nonlinear predictive control method for SRG based on the target state equation is proposed. To begin with, according to established nonlinear mathematical model of the SRG and the predictive control theory, the nonlinear predictive controller of the SRG is designed. Next, an extended state observer is designed to reduce the influence of external disturbance on the output voltage. Finally, the effect of the simulation verification algorithm is performed. The results of simulation show that compared with the PID control method, the nonlinear predictive control method makes the output voltage more stable and improves the robustness of SRG.