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An electromagnetic design method of high-speed permanent magnet synchronous motor with increased inductance

A permanent magnet synchronous motor, electromagnetic design technology, applied in the direction of synchronous motors with stationary armature and rotating magnets, magnetic circuits, electric components, etc., can solve the problems of increasing the cost and volume of the motor, so as to increase the cost of the motor and reduce the Effect of high-frequency harmonic current and loss reduction

Active Publication Date: 2022-07-01
TIANJIN UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, this will undoubtedly increase the cost and volume of the motor

Method used

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  • An electromagnetic design method of high-speed permanent magnet synchronous motor with increased inductance
  • An electromagnetic design method of high-speed permanent magnet synchronous motor with increased inductance
  • An electromagnetic design method of high-speed permanent magnet synchronous motor with increased inductance

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Embodiment 1

[0027] Example 1, as figure 1 shown. The high-speed permanent magnet synchronous motor includes rotor permanent magnets 5 , which are protected by a sheath 4 . It includes a stator core 1, the stator core is provided with stator slots, and the adjacent stator slots form stator teeth. A stator winding 2 is wound on the stator teeth. The stator windings are fixed in the stator slots by magnetic slot wedges 3, and the magnetic slot wedges 3 increase the slot leakage inductance of the high-speed permanent magnet synchronous motor, thereby increasing the inductance of the high-speed permanent magnet synchronous motor. In the design method given in this embodiment, by selecting different magnetic slot wedge materials, the inductance value of the high-speed permanent magnet synchronous motor can be increased by up to 300%.

[0028] In order to select a suitable magnetic slot wedge material, the armature reaction inductance of the high-speed permanent magnet synchronous motor shoul...

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Abstract

The invention relates to an electromagnetic design method for a high-speed permanent magnet synchronous motor with increased inductance. The steps include: calculating the armature reaction inductance of the high-speed permanent magnet synchronous motor; calculating the stator current; calculating the stator current waveform distortion rate; High-speed permanent magnet synchronous motor inductance; determine the magnetic wedge material to use. The invention can increase the high-speed permanent magnet synchronous motor's ability to suppress the high-frequency harmonic current of the stator.

Description

technical field [0001] The invention relates to an electromagnetic design method of a high-speed permanent magnet synchronous motor with increased inductance. Background technique [0002] The rotor of the high-speed permanent magnet synchronous motor is in a high-speed rotation state, and the high speed and high conductivity of the permanent magnets of the rotor make the permanent magnet eddy current loss one of the main losses of the high-speed motor. For this reason, it is necessary to reduce the eddy current losses of the permanent magnets in the motor design stage. For the permanent magnet synchronous motor powered by the inverter, the high frequency harmonic current of the stator is the main cause of the permanent magnet eddy current loss. High-speed motors are typically designed with fewer motor turns, resulting in low inductance for high-speed motors. Small inductance is not conducive to filtering out the high-frequency harmonic current of the stator. Usually, a se...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H02K1/16H02K3/493H02K1/2706H02K21/14
CPCH02K1/165H02K3/493H02K1/2706H02K21/14H02K2201/03H02K2213/03
Inventor 王耕籍王萍王晓远王力新
Owner TIANJIN UNIV