考虑温度效应的永磁机构及其控制系统多物理域联合仿真与设计

Multi-physics Co-simulation and Design of Permanent Magnet Actuator and Control System Considering Temperature Effect

电流/位移闭环控制能够有效抑制永磁机构分合闸时间分散性,提高断路器相控操作质量,延长开关使用寿命。可信的仿真模型能够在闭环控制系统设计验证阶段分析、比较、检验不同控制方法的动态特性和分散性抑制能力,指导实际控制器选型和设计,缩短研发周期。该文建立了永磁机构及其驱动控制系统多物理域联合仿真模型,实验分析并获得了关键敏感元件的温度效应数据库,同时考虑涡流效应的影响,论证了不同温度下联合仿真模型的可信性与有效性。在此基础上,设计了反馈线性化控制系统,通过联合仿真平台对比分析了该系统与现有典型控制系统的跟随特性、振荡超调以及分散性抑制能力。基于嵌入式系统的双闭环控制实验结果表明,多物理域联合仿真具备有效的控制器设计指导作用。

The current or displacement closed-loop control can effectively suppresse the time scatter of the opening and closing time of a permanent magnet actuator,improve the quality of the phase-controlled operation of the circuit breaker,and extend the service life of the switch.Credible simulation models can guarantee the analysis,comparison,and verification of the dynamic characteristics and the suppressing abilities to the time scatter of different control methods in the design and verifying stage of a closed-loop control system.Therefore,the selection and design of the actual controller are guided.and the development cycle shortened.In this paper,the co-simulation model on multi-physical domains of the permanent magnet actuator and its control system are established.The temperature effect database of the key sensitive components is obtained.Under the condition that the eddy effect is considered,the reliability and validity of the co-simulation model at different temperatures are demonstrated.On this basis,the feedback linearization control system is designed.Through the co-simulation platform,the following,oscillation,overshoot characteristics and the time scatter suppression ability of the proposed system and those of the other typical control system are compared.The experimental results based on the embedded system show that the multi-physical co-simulation proposed in this paper has an effective guidance for the design of the actual controller.