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Line-Start Permanent Magnet Motors with Variable Coil Turns

机译：线路启动永磁电机，具有可变线圈转动

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摘要

Line-start permanent magnet motors (LSPM) have significant advantages in efficiency and power factor compared to regular induction motors. However, the poor starting torque and synchronization capability are the key issues, and this influences LSPM motors used in many applications. In this paper, coil turns-changing method is proposed to relieve the contradiction between starting and steady-state performance, and improves starting torque and synchronization capability. In order to further remove the magnet braking torque, a novel coil turns-pole-changing method is also proposed to remove the contradiction. The permanent magnet braking torque can be eliminated, in additions, the starting-state and steady-state performance can be nearly decoupled totally. Furthermore, these two turns-changing methods can also start successfully even when network voltage is low. Finite element analysis is carried out to validate the big starting torque and strong synchronization capability.
机译：线启动永磁电机（LSPM）与常规感应电机相比，效率和功率因数具有显着的优势。但是，较差的起始扭矩和同步能力是关键问题，这影响了许多应用中使用的LSPM电机。在本文中，提出了线圈转型改变方法以减轻开始和稳态性能之间的矛盾，提高启动扭矩和同步能力。为了进一步去除磁铁制动扭矩，还提出了一种新颖的线圈转向极改变方法以去除矛盾。另外，可以消除永磁制动扭矩，即，起始状态和稳态性能可以完全分离。此外，即使网络电压低，也可以成功开始这两个转弯方法。进行有限元分析以验证大启动扭矩和强的同步能力。

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