Permanent magnetic motor rotor starting system

A technology of starting system and permanent magnet motor, which is applied in the direction of magnetic circuit rotating parts, synchronous machines, electrical components, etc. It can solve the problems of large braking torque of the motor, reduce the starting performance of the motor, and jitter, so as to improve the starting performance , improved starting performance, and the effect of increasing the xd value

Inactive Publication Date: 2016-06-29
JIANGSU SINOPETRO SUPERBSKILL MACHINE
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In addition, due to the structural characteristics of the rotor, in the design process, the quadrature axis reactance xq is much larger than the direct axis reactance xd, the braking torque of the motor is large during the starting process, and the motor will vibrate at the moment of starting, which will reduce the starting performance of the motor

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  • Permanent magnetic motor rotor starting system
  • Permanent magnetic motor rotor starting system

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Embodiment Construction

[0010] A permanent magnet motor rotor starting system, the starting system includes a solid rotor 2, a magnetic steel 4, a magnetic steel assembly groove, a magnetic isolation system 3, a damping ring 1, a slot wedge 6, an additional starting system, and the additional starting system The system includes several starting cage bars 5 and several starting cage bar installation slots, the several starting cage bars 5 are respectively embedded in several starting cage bar installation slots, and the starting cage bar installation slots are arranged on the magnetic steel assembly slots, Two cage bar installation slots are respectively arranged on the magnet steel assembly grooves between two adjacent magnet steels 4, and the starting cage bar 5 and slot wedge 6 are riveted or welded at both ends of the solid rotor 2 through the damping ring 1 The cage bar installation groove extends from the outside to the inside of the outer surface of the solid rotor 2 .

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Abstract

The invention relates to a permanent magnet motor rotor starting system. The starting system includes a solid rotor, magnetic steel, magnetic steel assembly slots, a magnetic isolation system, a damping ring, slot wedges, and an additional starting system. The additional starting system includes several starting cage bars and several starting cage bar installation slots, The several starting cage bars are respectively embedded in several starting cage bar installation grooves, the described starting cage bar installation grooves are arranged on the magnet steel assembly grooves, and the magnet steel assembly grooves between two adjacent magnet steels are respectively Two cage bar mounting slots are provided, and the two ends of the solid rotor connect the starting cage bar and the slot wedge by means of riveting or welding through damping rings. The present invention reduces the value of quadrature-axis reactance xq and increases the value of direct-axis reactance xd by changing the angle, quantity and depth of the arrangement of the starting cage bars, so that the ratio of xq / xd is reduced and the power generation during the motor starting process is reduced Machine braking torque and reluctance torque improve the starting performance of the motor.

Description

technical field [0001] The invention relates to a permanent magnet motor rotor starting system. Background technique [0002] Permanent magnet motors are more and more widely used because of their outstanding power-saving effect. The rotor of the solid rotor permanent magnet motor is composed of a ferromagnetic solid rotor body, a magnetic isolation system and an additional starting system. Its structure is divided into three parts: the solid rotor body, the magnetic isolation system and the additional starting system. The traditional additional starting system for the solid rotor permanent magnet motor rotor: on the surface of the solid rotor along the circumferential direction, a starting cage bar is evenly distributed on each pole surface, and the damping ring, the starting cage bar and the slot wedge are riveted or welded at both ends of the rotor. Connected in a closed system to form a closed system, which can improve the starting performance during the motor starting ...

Claims

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Application Information

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IPC IPC(8): H02K21/46H02K1/28
CPCH02K21/46H02K1/28
Inventor孙峰
OwnerJIANGSU SINOPETRO SUPERBSKILL MACHINE