| 引用本文: | 刘计龙,付康壮,麦志勤,等.永磁同步电机全转速范围无位置传感器控制.[J].国防科技大学学报,2024,46(4):114-124.[点击复制] |
| LIU Jilong,FU Kangzhuang,MAI Zhiqin,et al.Position sensorless control of permanent magnet synchronous motors over the full speed range[J].Journal of National University of Defense Technology,2024,46(4):114-124[点击复制] |
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| 永磁同步电机全转速范围无位置传感器控制 |
| 刘计龙,付康壮,麦志勤,李科峰,张伟伟 |
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(海军工程大学 电磁能技术全国重点实验室, 湖北 武汉 430033)
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| 摘要: |
| 为解决IF控制启动速度偏慢、启动转矩能力薄弱等问题,采用高频脉振电压注入法完成电动机零低速启动,并结合中高速区有效磁链法形成全转速范围无位置传感器复合控制策略。为了实现两种控制方法的平滑切换,提出一种基于转速过渡区与状态机结合的滞环切换策略,所提策略将全转速范围划分为零低速区、过渡区以及中高速区,电动机由中高速区进入过渡区时提前开启高频脉振电压注入法,使其位置估计过程达到稳定,为切换做好准备。为了减小注入高频电压对有效磁链法位置估计过程的冲击,在转速过渡区采用软开启的方式实现高频脉振电压注入法的投入与退出。针对转速过渡区两种位置估计方法同时工作时的耦合问题,设置了双同步旋转坐标系,实现了转子位置估计的解耦控制。在一台三相永磁同步电机上对所提方法的有效性进行了验证。 |
| 关键词: 永磁同步电机 无位置传感器控制 高频脉振电压注入法 有效磁链法 复合控制 |
| DOI：10.11887/j.cn.202404012 |
| 投稿日期：2022-04-16 |
| 基金项目:国家自然科学基金面上资助项目(52177202) |
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| Position sensorless control of permanent magnet synchronous motors over the full speed range |
| LIU Jilong, FU Kangzhuang, MAI Zhiqin, LI Kefeng, ZHANG Weiwei |
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(National Key Laboratory of Electromagnetic Energy, Naval University of Engineering, Wuhan 430033, China)
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| Abstract: |
| In order to solve the problems of slow starting speed of IF control and weak starting torque ability, the high frequency pulse voltage injection method was used to complete zero low speed starting of the motor, and combined with the effective flux method in the middle and high speed area, the position sensorless composite control strategy was formed in the full speed range. In order to achieve smooth switching between the two control methods, a hysteresis switching strategy combined with a state machine based on the speed transition region was proposed. The entire speed range was divided by the proposed strategy into the zero-low speed area, the transition area, and the medium-high speed area. When the motor entered the transition area from the medium-high speed area, the high frequency pulse voltage injection method was started in advance to stabilize the position estimation process and prepare for the switch. In order to reduce the impact of the injected high frequency voltage on the position estimation process of the effective flux method, the input and exit of the high frequency pulse voltage injection method were realized by soft switching in the speed transition zone. In order to solve the coupling problem when two position estimation methods work simultaneously in the speed transition region, a double synchronous rotating coordinate system was set up to realize the decoupled control of rotor position estimation. The effectiveness of the proposed method was verified on a three-phase permanent magnet synchronous motor. |
| Keywords: permanent magnet synchronous motors position sensorless control high frequency pulse voltage injection method effective flux method compound control |
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