三级式同步电机的自抗扰起动控制

Auto-disturbance-rejection start-up control of three-stage synchronous machines

中文关键词  三级式同步电机  航空发动机  自抗扰控制  扩张状态观测器  起动控制

英文关键词  three-stage synchronous machine  aircraft engines  active-disturbances rejection control  extended state observer  startup control

中文摘要

      受环境的随机性以及气动效应的影响, 航空发动机在起动的过程中会表现出不同的负载特性, 采用现有的 基于PID调节的起动控制策略, 难以获得稳定的起动加速性能. 针对该问题, 本文分析了三级式同步电机的起动控 制数学模型, 分别研究了转速环、电流环以及角度环的自抗扰控制器, 用以处理电流及电磁转矩方程中的未知外扰 和模型耦合项, 并通过仿真及实验与现有的起动控制策略进行了对比分析. 结果表明, 新设计的起动控制策略具有 较强的扰动抑制能力, 在不同的发动机状态下可以达到较为一致的起动加速性能, 相比采用PID调节的控制方法具 有较大优势.

英文摘要

      Because of the randomness of the environment and aerodynamic effects，aircraft engines in the startup process exhibit various load characteristics. Therefore, a stable startup performance is difficult to be achieved if the PID control strategy is used. To solve this problem, we analyze the startup control mathematical model of a three-stage brushless synchronous machine, and apply the active-disturbances-rejection control technology to the design of controllers in the current loop, speed loop and angle loop, which are used to suppress the influence of the unknown external disturbances and the coupling items in current and electromagnetic torque models. The simulation and experimental results show that the new startup control strategy, compared with the PID control method, has higher ability in disturbance rejection and better startup acceleration performance under different operation conditions.