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A permanent magnetic synchronous motor

A technology for permanent magnet synchronous motors and magnetic poles, which is applied in the direction of synchronous machine parts, manufacturing stator/rotor bodies, etc., and can solve problems such as small starting torque and difficult starting

Inactive Publication Date: 2007-09-19
许晓华
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0006] The invention aims to solve the shortcomings of the existing permanent magnet synchronous motors, such as difficulty in starting and small starting torque, and provides an improved permanent magnet synchronous motor, aiming at improving the starting performance of the motor

Method used

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  • A permanent magnetic synchronous motor
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Embodiment Construction

[0012] Referring to FIG. 1 , a permanent magnet synchronous motor includes a stator and a rotor 7, the stator includes an iron core 1, a stator coil 2, a casing 6 and an end cover 4, and the rotor 7 is composed of permanent magnets. The number of poles of the stator and the rotor are 8 and 6 respectively; the rotor poles are alternately distributed; two pairs of stator poles are alternately distributed, and are mirror-symmetrically arranged with the other two pairs of alternately distributed stator poles. The stator is provided with 8 coil windings, which are wound in 8 slots of the stator iron core through 8 coil bobbins, the stator iron core is embedded in the casing, and a circuit board 3 is installed at the end of the stator. Each joint of the coil 2 is welded on the circuit board 3, and is connected to an external circuit through the circuit board 3. A piece of magnetic steel sticks on the outer circle of the rotor shaft, and two bearings are respectively placed in the ca...

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Abstract

The invention relates to a permanent-magnet synchronous motor comprising a stator and a rotor, wherein the stator and the rotor comprise 8 and 6 magnetic poles respectively, the rotor magnetic poles are distributed alternatively, the two pairs of stator magnetic poles are also distributed alternatively. The invention realizes self-starting function, compact conformation, short magnetic circuit, and large output torque moment.

Description

technical field [0001] The invention relates to a synchronous motor, in particular to a permanent magnet synchronous motor. Background technique [0002] As we all know, permanent magnet synchronous motors are widely used in various fields of driving constant speed machinery because of their small size, energy saving, constant speed and other performances. The structure of the permanent magnet synchronous motor includes two basic parts: the rotor and the stator. The stator includes iron core, stator coil (also called winding or armature), casing and end cover, and the rotor is composed of permanent magnets. After the stator coil is energized, the armature rotating magnetic field is generated in the air gap, and its rotation speed is synchronous speed. [0003] {n}r / min=60{f}Hz / p (1) [0004] In the formula, f is the frequency of the AC power supply; p is the number of pole pairs of the stator rotating magnetic field. [0005] In the existing permanent magnet synchronous ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H02K21/02H02K15/02
Inventor 许晓华方广忠马巧芬
Owner 许晓华
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