Three-phase single-layer winding of intermediate frequency permanent magnet motor

A single-layer winding, permanent magnet motor technology, applied in the shape/style/structure of winding conductors, synchronous machine parts and other directions, can solve the motor performance such as efficiency, noise, vibration, adverse effects of waveform, double-layer insulation material accounted for. The problem of large slot area and small winding slot full rate can achieve the effect of good magnetic potential sinusoid, high slot full rate, and good sinusoid.

Inactive Publication Date: 2009-10-14
TELLHOW SCI TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

And the number of slots per pole and phase is mostly fractional slots. When the three-phase winding of this motor is designed as a double-layer short-pitch winding, because the double-layer insulation material occupies a large slot area, the winding slot fullness rate is small.
The motor is uneconomical, and the design of the traditional single-layer winding is mostly a full-pitch winding, and the magnetic potential of the winding contains a large amount of harmonics, which will adversely affect the performance of the motor such as efficiency, noise, vibration, and waveform.

Method used

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  • Three-phase single-layer winding of intermediate frequency permanent magnet motor
  • Three-phase single-layer winding of intermediate frequency permanent magnet motor

Examples

Experimental program
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Effect test

Embodiment 1

[0008] Embodiment 1: as figure 1 As shown, a Z=36 2P=14 m=3 y=1-4 intermediate frequency permanent magnet motor three-phase single-layer winding layout diagram The three-phase windings AX, BY, CZ are symmetrically arranged, and the pitch is Y=1-4 , Phase A is composed of 6 coils of AX winding in series with all openings, and is placed in the twelve slots of slots 14, 17; 20, 23; 24, 27; 30, 33; 34, 1; 4, 7. The B phase is formed by connecting all openings of the 6 coils of the BY winding in series, and the bottom is in the twelve slots of slots 26, 29; 13, 35; 36, 3; 6, 9; 10, 13; 16, 19. In the same way, the C phase is formed by connecting all 6 coils of the CZ winding in series, and they are placed in the twelve slots of slots 2, 5; 8, 11; 12, 15; 18, 21; 22, 25; 28, 31. The three-phase symmetrical single-layer winding formed in this way has six lead-out joints A, X, B, Y, C, and Z, which can be connected in Y or △ according to needs, and provide different voltages.

Embodiment 2

[0009] Embodiment 2: as figure 2 Shown is a Z=36 ZP=10 m=3 y=1-4 intermediate frequency permanent magnet motor three-phase single-layer winding layout diagram, three-phase winding AX, BY, CZ symmetrical layout, pitch Y=1-4 , Phase A is composed of 6 coils of AX winding in series with all openings, and is placed in the twelve slots of slots 1, 4; 3, 6; 9, 12; 17, 20; 23, 26; 31, 34. The B phase is composed of all openings of the 6 coils of the BY winding connected in series. Down in the grooves 25, 28; 27, 30; 33, 36; 5, 8; 11, 14; 19, 22 twelve grooves. Similarly, phase C is composed of 6 coils of CZ winding connected in series with all openings, which are placed in slots 13, 16; 15, 18; 21, 24; 19, 32; 35, 2; 7, 10 in twelve slots. The three-phase symmetrical single-layer winding formed in this way has six lead-out joints A, X, B, Y, C, and Z, which can be connected in Y or △ as required. Different voltages are available. The three-phase symmetrical single-layer short-pi...

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Abstract

A three-phase single-layer winding of an intermediate-frequency permanent magnet motor, which is characterized in that each phase is discontinuously arranged by six short-pitch full-open equal-turn coils and then connected in series to form a three-phase symmetrical short-pitch single-layer winding, with good performance and craftsmanship Simple. The advantages of the present invention are: 1. The three-phase winding is a symmetrical three-phase single-layer structure, the slot fullness rate is high, and the utilization rate of electromagnetic materials is high; 2. The single-layer winding has short pitch, short end, small leakage reactance, magnetic 3. This kind of winding can be used as generator armature winding or motor winding, and can be Y-connected or △-connected. The harmonics are reduced by 68% compared with traditional full-pitch single-layer windings, so The magnetic potential is sinusoidal.

Description

technical field [0001] The invention relates to a winding of an intermediate frequency permanent magnet AC motor, in particular to a three-phase single-layer winding of an intermediate frequency permanent magnet motor. Background technique [0002] Intermediate frequency permanent magnet motors have become the development direction of energy-saving motors, but intermediate frequency permanent magnet motors generally have more poles and fewer slots. And the number of slots per pole and phase is mostly fractional slots. When the three-phase winding of this motor is designed as a double-layer short-pitch winding, because the double-layer insulating material occupies a large slot area, the winding slot fullness rate is small. The motor is uneconomical, and the design of the traditional single-layer winding is mostly a full-pitch winding, and the magnetic potential of the winding contains a large amount of harmonics, which will adversely affect the performance of the motor such a...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H02K21/02H02K3/12H02K3/28
Inventor 林政安
Owner TELLHOW SCI TECH CO LTD
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