Novel rotor of permanent magnet motor

A permanent magnet motor, a new type of technology, applied in the direction of magnetic circuit rotating parts, magnetic circuits, electrical components, etc., can solve problems such as structural defects, achieve the effects of light weight, increased strength, and reduced costs

Inactive Publication Date: 2015-07-08
CRRC YONGJI ELECTRIC CO LTD
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0004] The invention solves the problems caused by the above-mentioned structural defects...

Method used

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  • Novel rotor of permanent magnet motor
  • Novel rotor of permanent magnet motor

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Embodiment Construction

[0011] A rotor of a new type of permanent magnet motor, comprising a rotating shaft 1, a rotor punch 7 that is laminated on the rotating shaft 1 and has a magnetic steel groove 4 and a ventilation hole 6, and a magnetic steel 2 inserted in the magnetic steel groove ; The rotor punch is a U-shaped magnetic circuit structure, that is, three magnetic steel grooves distributed in a U shape form a magnetic pole; under each magnetic pole, within the range surrounded by three magnetic steel grooves distributed in a U shape, There are two magnetic isolation bridge holes 5, and the two magnetic isolation bridge holes are respectively located on the inner side of the magnetic steel slots on both sides of each magnetic pole (the three magnetic steel slots forming each magnetic pole are divided into two sides and the middle) and the rotor punching plate The outer edge; the rotor punch 7 and the rotating shaft 1 adopt an interference fit; the magnet steel 2 and the rotor punch have a gap fi...

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Abstract

The invention relates to permanent magnet motors, in particular to rotors of the permanent magnet motors, provides a novel rotor of a permanent magnet motor and solves the problems caused by structural defects of rotors in existing permanent magnet motors. The rotor of the permanent magnet motor comprises a revolving shaft, a rotor sheet and magnetic steel, wherein the rotor sheet is fitted with the revolving shaft in a superimposed mode, magnetic steel grooves and vent holes are formed in the rotor sheet, and the magnetic steel is inserted in the magnetic steel grooves; the rotor sheet is of a U-shaped magnetic structure, namely every three magnetic steel grooves which are distributed in a U shape form a magnetic pole; two magnetism isolating bridge holes are formed below each magnetic pole, and the rotor sheet is in interference fit with the revolving shaft; the magnetic steel is in clearance fit with the rotor sheet, and gaps at the two ends of each section of the magnetic steel are sealed up with silicone rubber in a pouring mode. Fillets used for eliminating stress concentration are formed at the two ends of each magnetic steel groove. By means of the novel rotor of the permanent magnet motor, the realistic basis is provided for research and development of permanent magnet motors with higher power and higher rotating speed.

Description

technical field [0001] The invention relates to a permanent magnet motor, in particular to a rotor of a permanent magnet motor, in particular to a novel rotor of a permanent magnet motor. Background technique [0002] Because permanent magnet motors have many advantages such as small size, light weight, small moment of inertia, fast dynamic response speed, and balanced dynamic performance, the research and application of permanent magnet motors have attracted widespread attention in recent years. In addition, with the rapid development of electronic technology and control technology, the control technology of permanent magnet motors has matured and is becoming more and more perfect. It is no exaggeration to say that permanent magnet motors have been widely used in various fields, and their market prospects are very broad. Therefore, the permanent magnet motor will become the mainstream of the next generation of new motor development. In the design process of permanent magn...

Claims

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Application Information

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IPC IPC(8): H02K1/27
CPCH02K1/2706
Inventor 孙德强贾喜勤姬春霞倪伟吴楠
Owner CRRC YONGJI ELECTRIC CO LTD
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