A Magnetization State Initialization Control Scheme for Variable Flux Memory Machines Without Requiring Position Sensor Information
A Magnetization State Initialization Control Scheme for Variable Flux Memory Machines Without Requiring Position Sensor Information
复制标题
DOI：
10.1109/tte.2020.3004734
复制
发表时间：
2020-09
影响因子：
7
通讯作者：
S. Lyu;Hui Yang;Heyun Lin;Yuan Ren
中科院分区：
文献类型：
--
作者：
S. Lyu;Hui Yang;Heyun Lin;Yuan Ren
变磁通记忆电机（VFSTs）的初始磁化状态（MS）过低，会导致启动电流过大，甚至启动失败。本文提出了一种增量式编码器变频调速系统的MS初始化控制方案，该方案通过注入高频方波电压来估计所需的转子位置。根据估计的初始转子位置，通过施加${d}$轴电流脉冲可以准确、平稳地实现MS初始化。首先展示了所提出的计划的总体框架。详细讨论了双极注入法中电压脉冲幅值的确定，以实现全磁通调节范围内的极性检测。随后介绍了基于估计转子位置的MS初始化的${d}$轴电流脉冲注入方法的实现。最后，在一台已研制的VFMM样机上，对所提出的MS初始化控制方案的可行性和有效性进行了实验验证。
Variable flux memory machines (VFMMs) normally suffer from excessively low initial magnetization state (MS), which will cause a large starting current or even startup failure. This article proposes an MS initialization control scheme for VFMMs equipped with incremental encoders, in which the required rotor position is estimated by injecting high-frequency square-wave voltage. Based on the estimated initial rotor position, the MS initialization can be accurately and smoothly achieved by applying a ${d}$ -axis current pulse. The general framework of the proposed scheme is demonstrated first. The voltage pulse magnitude determination of the bipolar injection method is then particularly discussed to realize the polarity detection within a full flux regulation range. The implementation of the ${d}$ -axis current pulse injection method for the MS initialization based on the estimated rotor position is subsequently introduced. Finally, the feasibility and effectiveness of the proposed MS initialization control scheme are experimentally verified on a manufactured VFMM prototype.