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Permanent magnet soft starter

A starter, permanent magnet soft technology, applied in motor generators/starters, electric components, electromechanical transmissions, etc., can solve the problems of short service life of electronic components, easy to generate harmonics, etc., to achieve long service life, reduce The effect of current impact and avoiding burnout

Inactive Publication Date: 2010-09-22
JIANGSU YINMAO HLDG GROUP +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the service life of electronic components is short, usually 5-8 years, and it is easy to generate harmonics

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0020] The present invention will be further described in detail below in conjunction with the embodiments of the accompanying drawings.

[0021] Such as figure 1 The permanent magnet soft starter shown includes a driving rotor and a driven rotor. The main components of the drive rotor are: drive coupling 1, drive rotor disk 2, permanent magnet 3, and cooling fan 8. The main components of the driven rotor are: the driven rotor disk 7, the induction copper ring 4, the magnetic steel ring 5, and the driven coupling 6. The driven rotor disc 7 is fixedly connected with the driven shaft coupling 6 .

[0022] Such as figure 1 The shown driving rotor disc 2 is distributed with permanent magnets 3 radially opposite to the induction copper ring 4 . Between the inner peripheral surfaces of the permanent magnets 3 there is a cooling groove 10 with a depth of 2-30 mm and an angle β=0°-30° between the axis and the axis of the driven spindle. The included angle between the permanent ma...

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Abstract

The invention provides a novel motor soft starter, which has the advantages of realizing smooth start, reducing current impulse and prolonging the service life, along with simple structure, low cost and high reliability. Because the mechanical connection is absent between a driving rotor and a driven rotor, the motor soft starter can reduce the vibration of the conventional system by 50 to 85 percent. The motor soft starter can prevent a motor from being burnt due to overheating caused by mechanical failure or blockage. The motor soft starter comprises the driving rotor and the driven rotor, wherein the driving rotor mainly comprises a driving coupling (1), a driving rotor disc (2), and permanent magnets (3); and the driven rotor consists of a driven rotor disc (7), a magnetic steel ring (5), an inductive copper ring (4), and a driven coupling (6). The motor soft starter is characterized in that: the magnetic steel ring (5) and the inductive copper ring (4) are fixed at the periphery of the driven rotor disc (7) in a barrel shape; the driven rotor disc (7) which is coaxial with the driving rotor disc is in transmission connection with the driven coupling (6) coaxially; and the permanent magnets (3) which are opposite to the inductive copper ring (4) axially are distributed on the inner circumference of the driving rotor disc (2).

Description

technical field [0001] The invention relates to a motor soft starter made of permanent magnet material. technical background [0002] In motor soft starters, the commonly used method is to use electronic components to control the voltage and current of the motor. However, the service life of electronic components is short, usually 5-8 years, and it is easy to generate harmonics. Contents of the invention [0003] The purpose of the present invention is to provide a permanent magnet soft starter, which uses permanent magnet coupling technology without using any electronic components, has simple structure, low cost, high reliability, no maintenance, and long service life (up to 20 years). And can reduce the vibration of the original system by 50-85%. [0004] The permanent magnet soft starter includes a driving part mainly composed of a driving coupling 1, a driving rotor disc 2, and a permanent magnet 3, and a driven rotor disc 7, an induction copper ring 4, a magnetic st...

Claims

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Application Information

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IPC IPC(8): H02P1/16H02K51/00
Inventor 高超
Owner JIANGSU YINMAO HLDG GROUP
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