Permanent-magnet synchronous motor and compressor with same

A permanent magnet synchronous motor and compressor technology, applied to synchronous motors with stationary armatures and rotating magnets, machines/engines, magnetic circuits, etc., can solve the problem of insufficient reluctance torque and achieve an increase in differential value, increase the reluctance torque, and increase the effect of the q-axis inductance

Inactive Publication Date: 2015-05-06
GUANGDONG MEIZHI COMPRESSOR +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In the related art, the difference between the quadrature-axis inductance and the direct-axis inductance of the permanent magnet synchronous motor with a single-layer magnet slot structure is not large, resulting in an unsatisfactory reluctance torque

Method used

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  • Permanent-magnet synchronous motor and compressor with same
  • Permanent-magnet synchronous motor and compressor with same
  • Permanent-magnet synchronous motor and compressor with same

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Embodiment Construction

[0035] Embodiments of the invention are described in detail below, examples of which are illustrated in the accompanying drawings. The embodiments described below by referring to the figures are exemplary and are intended to explain the present invention and should not be construed as limiting the present invention.

[0036] Refer below Figure 1-Figure 4 The permanent magnet synchronous motor 100 according to the embodiment of the present invention will be described in detail. It should be noted that, in the embodiment of the present invention, the case where the number of stator slots is 48 and the number of rotor poles is 8 is only listed, but the present invention is not limited thereto. Other combinations of the number of stator slots and the number of rotor poles can also achieve the same beneficial effect by using the same implementation method as the embodiment of the present invention.

[0037] Such as Figure 1-Figure 4 As shown, the permanent magnet synchronous m...

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Abstract

The invention discloses a permanent-magnet synchronous motor and a compressor with the same. The permanent-magnet synchronous motor comprises a stator and a rotor arranged inside the stator, the rotor is provided with a plurality of groups of magnet grooves distributed circumferentially, each group of magnet grooves comprises an outer groove and an inner groove, and on the cross section of the rotor, the outer grooves extend along the circumferential direction of the rotor, and the V-shaped inner grooves are positioned on the radial inner sides of the outer grooves. The permanent-magnet synchronous motor has the advantages that the rotor is provided with the outer grooves extending along the circumferential direction of the rotor, and the V-shaped inner grooves positioned on the radial inner sides of the outer grooves, so that q-axis inductance of the motor can be enhanced effectively, a difference value between the q-axis inductance and d-axis inductance is further increased, and reluctance torque of the permanent-magnet synchronous motor can be increased.

Description

technical field [0001] The present invention relates to the technical field of refrigeration equipment, in particular to a permanent magnet synchronous motor and a compressor having the same. Background technique [0002] Permanent magnet synchronous motors can generally be divided into surface-mounted permanent magnet synchronous motors (SMPM) and interior permanent magnet synchronous motors (IPM) according to the difference in the installation position of the permanent magnets on the rotor. Built-in permanent magnet synchronous motor because the permanent magnet is buried in the rotor core, the firmness of the rotor is enhanced and the eddy current inside the permanent magnet can be reduced. In addition, there is a difference in inductance between the d-axis (direct axis) and q-axis (quadrature axis) of the permanent magnet built-in permanent magnet synchronous motor. In addition to the permanent magnet torque of the motor, the reluctance torque of the motor can also be us...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H02K21/16H02K1/27F04B35/04
CPCH02K21/16F04B35/04H02K1/2706
Inventor 张尊睦杨泾涛
Owner GUANGDONG MEIZHI COMPRESSOR
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