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Radial magnetic-circuit rotary transformer with single-layer signal windings and signal winding reeling method

A resolver and signal winding technology, which is applied to transformers, magnetic circuit rotating parts, transformer/inductance parts, etc., can solve the problems of limited application fields, low precision, and increased volume, so as to improve measurement accuracy, The effect of reducing measurement error and compact structure

Inactive Publication Date: 2014-12-10
HARBIN INST OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The purpose of the present invention is to provide a single-layer signal winding radial magnetic circuit rotary transformer and a signal winding winding method to solve the problem that the existing radial reluctance rotary transformer has low precision and the volume increases with the number of pole pairs , the problem of limited application domain

Method used

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  • Radial magnetic-circuit rotary transformer with single-layer signal windings and signal winding reeling method
  • Radial magnetic-circuit rotary transformer with single-layer signal windings and signal winding reeling method
  • Radial magnetic-circuit rotary transformer with single-layer signal windings and signal winding reeling method

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specific Embodiment approach 1

[0014] Specific implementation mode one: as figure 1 , figure 2 As shown, the single-layer signal winding radial magnetic circuit resolver includes a stator 2, a rotor 1, an excitation winding 8, a sine signal winding 4, and a cosine signal winding 5; the stator 2 is in the shape of a cylinder; the stator 2 and the rotor 1 have a Unequal air gap 3, the inner surface of the stator 2 is machined with 4NP stator slots 7 and 4NP stator teeth 9 along the axial direction, and the 4NP stator slots 7 are evenly distributed along the inner surface of the stator 2, two adjacent stators Between the slots 7 are the stator teeth 9; wherein, N is a natural number, the value range of N is 2 to 15, and P is the number of pole pairs of the rotor 1; the field winding 8 is placed in 4NP stator slots 7, and one by one The stator slots 7 are connected in reverse series, and the number of turns of the excitation winding 8 distributed in each stator slot 7 is equal; 4NP stator teeth 9 are wound wi...

specific Embodiment approach 2

[0017] Specific implementation mode two: as figure 1 , figure 2 As shown, the single-layer signal winding radial magnetic circuit resolver signal winding method described in Embodiment 1, the method described is: the two-phase signal winding is a concentrated winding, and the two-phase signal winding changes according to the sinusoidal law. Specifically:

[0018] Randomly select a plane 6 that passes through the axis of the stator 2 and does not intersect with the stator teeth 9, and based on the plane 6, divide the 4NP stator teeth 9 into two sets alternately in the clockwise direction according to the sine phase E and the cosine phase F 2NP stator teeth 9, and then divide the 2NP stator teeth 9 of each phase signal winding into P parts according to the winding method; The stator teeth 9 are divided into two groups; the first group of N stator teeth 9 is wound counterclockwise, and the second group of N stator teeth 9 is wound clockwise; the winding method of the cosine si...

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Abstract

The invention discloses a radial magnetic-circuit rotary transformer with single-layer windings and a signal winding reeling method, belongs to the technical field of transformers and solves the problem that an existing radial reluctance type rotary transformer is low in accuracy and size thereof is increased as increase of the number of pole pairs. Unequal air gaps are formed between a stator and a rotor, the inner surface of the stator is axially provided with 4NP stator slots and 4NP stator teeth respectively, exciting windings are disposed in the 4NP stator slots, and sine and cosine signal windings are wound on the distant stator teeth of the 4NP stator teeth. The signal winding reeling method includes optionally selecting a plane passing the axis of the stator and not intersected with the stator teeth, dividing the 4NP stator teeth into two sets of 2NP stator teeth clockwise in a sine and cosine alternation manner and equally dividing the 2NP stator teeth of each phase of the signal windings into P parts; dividing 2N stator teeth of the first part into two groups including the first group and the second group which reel in the anti-clockwise direction and in the clockwise direction respectively. The radial magnetic-circuit rotary transformer is used for the field of electric vehicles, aviation and aerospace and the like.

Description

technical field [0001] The invention relates to a single-layer signal winding rotary transformer and a signal winding winding method, belonging to the technical field of transformers. Background technique [0002] Traditional resolvers include contact resolvers, resolvers with coupling transformers, and vernier resolvers. Although brushless has been gradually realized, the structure is still relatively complicated and the error is large, which is not conducive to high-precision measurement. Existing reluctance resolvers usually adopt a radial magnetic circuit structure, the excitation and signal windings are placed on the stator teeth, and the rotor adopts a salient pole structure. However, the existing radial reluctance resolver not only has relatively low precision, but also has a significantly larger volume with the increase of the number of pole pairs, which limits its application in various fields such as electric vehicles, aviation and aerospace. Contents of the inve...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01F38/18H01F27/00H02K1/16H02K1/24H02K3/12
CPCY02T10/64
Inventor 尚静齐明王昊赵猛邹继斌刘雪缘
Owner HARBIN INST OF TECH