摘要
采用两条独立能量链供电,工作于非周期瞬态工况的双三相直线感应电机系统,在功率等级、功率密度、控制自由度、系统冗余度等方面具有诸多优势。该文基于考虑动态边端效应的双三相直线感应电机模型,给出了矢量控制策略。结合非周期瞬态系统的运行特性,提出一种故障模式下通过开环计算给定推力作为矢量控制输入的能量链切换控制策略。该控制策略避免了故障暂态过程中给定电流变化与输出电流尖峰的耦合,通过在考虑动态边端效应时电机在最大推力的约束下根据控制目标调整给定推力,实现了系统故障后单能量链的安全运行。仿真和实验验证了所提控制策略的正确性与可行性。
A dual three-phase linear induction motor operating in non-periodic transient conditions driven by two independent energy chains has advantages in power level,power density,freedom degree of control and system redundancy.In this paper,a vector control method is given based on the model of dual three-phase linear induction motor with dynamic end effect.According to the operation characteristics of the non-periodic transient system,an energy chain switching control method under the fault operation condition is proposed,which uses the open-loop calculation of the given thrust as the input of vector control.The proposed method can avoid the coupling of the given current change and the output current peak during the transient processes of system fault.Taking the maximum output thrust constraint with dynamic end effect into consideration,it adjusts the given thrust according to the control target,thereby realizing the safe operation of the single energy chain in case of system failures.Simulation and experimental results verified the correctness and feasibility of the proposed control method.
作者
韩一
聂子玲
许金
朱俊杰
芮万智
Han Yi;Nie Ziling;Xu Jin;Zhu Junjie;Rui Wanzhi(National Key Laboratory of Science and Technology on Vessel Integrated Power System Naval University of Engineering,Wuhan 430033 China)
出处
《电工技术学报》
EI
CSCD
北大核心
2021年第2期258-267,共10页
Transactions of China Electrotechnical Society
基金
国家自然科学基金资助项目(51977218)。
关键词
双三相直线感应电机
非周期瞬态
动态边端效应
能量链切换
最大推力
Dual three-phase linear induction motor
non-periodic transient
dynamic end effect
energy chain switching
maximum output thrust
