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Non-uniform partitioned permanent magnet linear synchronous motor excitation topology structure and design method thereof

A permanent magnet linear synchronization and non-uniform block technology, applied in the direction of magnetic circuit shape/style/structure, magnetic circuit, electrical components, etc., can solve the problems of affecting optimization efficiency, reducing the maximum rated thrust of the motor, and small overload capacity

Active Publication Date: 2017-09-15
ZHEJIANG SCI-TECH UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Long-term operation may even cause damage to the motor insulation, reduction of the maximum rated thrust of the motor, and small overload capacity, etc.
[0006] 3. In the optimization design of permanent magnet motor block technology, when the number of design variables and constraints is large, and each design variable may be related to each other, the accuracy of design calculation needs to be further improved
[0007] 2. In the optimization design process, in order to obtain the optimal value of the design variable, the initial optimization interval of the design variable is generally selected very large, which will consume a lot of computing time, affect the optimization efficiency, and also cause a large step size, reducing the design variable optimization. value accuracy

Method used

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  • Non-uniform partitioned permanent magnet linear synchronous motor excitation topology structure and design method thereof
  • Non-uniform partitioned permanent magnet linear synchronous motor excitation topology structure and design method thereof
  • Non-uniform partitioned permanent magnet linear synchronous motor excitation topology structure and design method thereof

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Experimental program
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Effect test

Embodiment 1

[0069] The motor mainly consists of primary, secondary and air gap.

[0070] Such as figure 1 As shown, the primary side of the bilateral cylindrical permanent magnet linear synchronous motor is divided into inner and outer double-layer structures, consisting of an inner stator and an outer stator.

[0071] The outer stator includes an outer primary core 5 and an outer armature winding 4 . The outer primary iron core 5 is located at the outermost side of the motor and is of tubular structure, and the outer layer armature winding 4 is tightly fixed inside the outer primary iron core 5 .

[0072] The inner stator includes an inner primary core 1 and an inner armature winding 2 . The inner primary iron core 1 is located at the innermost side of the motor and is also of tubular structure, and the inner armature winding 2 is tightly fixed outside the inner primary iron core 1 .

[0073] The inner armature winding 2 and the outer armature winding 4 are connected in series, and bo...

Embodiment 2

[0098] Such as image 3 As shown, the difference between this embodiment and Embodiment 1 is that the permanent magnet has a non-uniform even-numbered block topology.

[0099] Let the width of the two permanent magnet blocks in the middle be a 0 ; The width of each permanent magnet block extending to both ends is a 1 、a 2 ,...,a n ;a i =a 0 *q i , i=1, 2, 3,...n, n is a positive integer, 01 , t 2 ,...,t n+1 ; The relationship between its harmonic content and design variables is:

[0100]

[0101]

[0102] B r is the residual magnetism, μ r is the relative magnetic permeability, h m is the thickness of the magnetized permanent magnet.

[0103] for image 3 For an example, take n=2 as an example for illustration.

[0104] According to the factor level constraints a 0 p ; When the pole distance τ of the permanent magnet p is a certain value, in the variable interval [a d , a e ] to select a 0 The value of , in the interval [t f , t g ] select t 1 , t...

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Abstract

The invention provides a non-uniform partitioned permanent magnet linear synchronous motor excitation topology structure comprising a secondary magnet yoke which is provided with permanent magnets, and the N-poles and the S-poles of the permanent magnets are alternately arranged in a polar distance. The permanent magnets use the non-uniform partitioned structure under each pole, and the adjacent permanent magnet blocks are separated by a magnetic separation block. The width of all the permanent magnet blocks under each pole decreases in order from the middle to the two ends according to the geometric progression. The permanent magnets use the non-uniform even partitioned topology structure or the non-uniform odd partitioned topology structure. The invention also provides a design method of the non-uniform partitioned permanent magnet linear synchronous motor excitation topology structure. The non-uniform partitioned topology structure has the characteristics of improving air gap flux density sinusoidal property, low output voltage harmonic content, low electromagnetic force fluctuation and stable motor operation. The orthogonal optimization method is adopted on the design variable to obtain an optimization interval, and the optimal solution of the optimization target is obtained through limitation of the constraint condition; and the algorithm is simple and reliable, fast in speed and high in accuracy.

Description

technical field [0001] The invention belongs to the technical field of optimization design of permanent magnet linear motors, and relates to an excitation topology structure of a non-uniform segmented permanent magnet linear synchronous motor and an optimization design method thereof. Background technique [0002] In recent years, due to the rapid development of modern precision manufacturing, microelectronics manufacturing and other industries, multiple requirements of "high acceleration, high speed and high precision" have been put forward for modern CNC machine tools. Using permanent magnet synchronous linear motor (PMLSM) to directly drive is one of the necessary ways to achieve high acceleration, high speed and high precision of CNC machine tools. At present, the design variable optimization of general permanent magnet motors is mainly to determine the initial value of the design variables according to the performance requirements of the motor and the size power equatio...

Claims

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Application Information

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IPC IPC(8): H02K41/03H02K1/27
CPCH02K1/27H02K41/031H02K2213/03H02K2201/03H02K2201/06Y02T10/64
Inventor 郭亮师丹丹
Owner ZHEJIANG SCI-TECH UNIV
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