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PERMANENT MAGNET SYNCHRONOUS MOTOR HAVING A LOW DEMAGNETIZATION FACTOR
PERMANENT MAGNET SYNCHRONOUS MOTOR HAVING A LOW DEMAGNETIZATION FACTOR
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机译：具有低退磁系数的永磁同步电动机
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摘要
To obtain a permanent magnet synchronous motor suitable for an electric power steering system, in which the magnet thickness (magnet used amount) can be reduced while securing demagnetization resistance and torque characteristics. In a permanent magnet synchronous motor including a rotor in which plural permanent magnets are arranged at an outer periphery of a rotor core, which is supported so as to rotate freely, and a stator provided at the outside of the stator and having stator windings 5 and a stator core, when a gap length between the outer periphery of the permanent magnet and an internal periphery of the stator core is “L” [mm] and the thickness of the central portion of the permanent magnet in the motor rotation direction is “t” [mm], the gap length “L” and the thickness “t” is set in a range of; L≦1[mm] as well as t/(t+L)≦0.9
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机译：为了获得一种适用于电动助力转向系统的永磁同步电动机，在确保抗退磁性和转矩特性的同时，可以减小磁体厚度（磁体使用量）。在一种永磁同步电动机中，该永磁同步电动机包括在转子铁芯的外周上布置有多个永磁体的转子，该转子被自由旋转地支撑;以及定子，该定子设置在定子的外侧并且定子绕组 5 和定子铁心，当永磁体的外周与定子铁心的内周之间的间隙长度为“ L” [mm]，并且永磁体的中心部分的厚度为电动机旋转方向为“ t” [mm]，间隙长度“ L”和厚度“ t”设定在以下范围内： <？in-line-formulae description =“在线公式” end =“线索”？> L ≤1[mm]以及 t /（ t + L ）≤0.9<？in-line-formulae description =“ In行公式“ end =“ tail”？>
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