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基于转子不对中模型的永磁同步电机驱动系统容错控制

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针对永磁同步电机驱动系统在运行过程中出现转子不对中故障引起的转速波动问题,对转子不对中故障展开了动力学分析.首先,推导负载转矩的力学关系,建立转子不对中力矩耦合模型,对故障状态下的转矩负载进行观测;其次,由负载转矩观测器提供的故障信息进一步设计补偿后的扩张状态观测器,从而有效减少负载转矩和转速的故障波动,减小负载不平衡故障对电机驱动系统的影响,提高了驱动系统的容错性能.
Rotor Misalignment Model-based Fault-tolerant Control of Drive Systems of Permanent Magnet Synchronous Motors
In light of the speed fluctuations caused by rotor misalignment faults in the operational process of a permanent magnet synchronous motor drive system,this study dynamically analyzed the rotor misalignment fault.First the mechani-cal relationship of load torque was derived and a torque coupling model for observing the torque load under faulty condi-tions was established.Second a compensation mechanism for the expanded state observer was designed using fault infor-mation provided by the load torque observer to effectively reduce fault-induced fluctuations of load torque and speed.Hence the design has the potential of mitigating the impact of load imbalance faults on the motor drive system and enhancing the system's fault tolerance performance.

rotor misalignmenttorque couplingload torque observerextended state observer

孙嘉泉

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扬州大学电气与能源动力工程学院,江苏 扬州 225127

转子不对中 力矩耦合 负载转矩观测器 扩张状态观测器

2024

电工技术
重庆西南信息有限公司(原科技部西南信息中心)

电工技术

影响因子:0.177
ISSN:1002-1388
年,卷(期):2024.(23)