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Equal circle type single-phase winding of intermediate frequency permanent magnet generator

A permanent magnet generator and single-phase winding technology, which is applied in the field of turn-type single-phase windings, can solve the problems of single-phase motor performance noise, small number of slots, and low efficiency, and achieve small magnetic potential harmonics, convenient implementation, and The effect of simple process

Active Publication Date: 2008-04-09
TELLHOW SCI TECH CO LTD
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  • Application Information

AI Technical Summary

Problems solved by technology

[0002] Medium-frequency permanent magnet motors have become the development direction of energy-saving motors. However, medium-frequency permanent magnet motors generally have many poles and few slots. Therefore, the single-phase windings of this kind of motors cannot be arranged according to the concentric structure of traditional single-phase windings with unequal turns. Arranged according to the general equal-turn structure
However, this arrangement has a lot of harmonics in the magnetic potential of the motor winding, and the performance of the single-phase motor, such as high noise, low efficiency, and large voltage waveform distortion rate, often cannot meet the requirements of technical standards.

Method used

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  • Equal circle type single-phase winding of intermediate frequency permanent magnet generator

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Embodiment 1

[0009] Embodiment 1: As shown in Figure 1, a Z=36, 2P=14, Y=1-3, Y=1-2, m=1 intermediate frequency permanent magnet motor single-phase winding layout single-phase winding AX, The lead-out head is marked as A and X, and it is composed of 12 equal-turn coils in series, of which there are 8 turns with pitch Y=1-3, specifically in slots 2, 4; 7, 9; 12, 14; 15, 17; 20, 22; 25, 27; 30, 32; 35, 1 sixteen grooves, pitch Y = 1-2 has 4 turns, specifically in the groove 18, 19; 23, 24; 28, 29 ; In the eight slots of 33 and 34, the single-phase windings with unequal distances and equal turns formed in this way eliminate the third harmonic magnetic potential, and the fifth and seventh harmonic magnetic potentials also greatly weaken the total harmonic magnetic potential. 1.5%, good sinusoidality. achieve the purpose of the invention.

Embodiment 2

[0010] Embodiment 2: As shown in FIG. 2 , a Z=36 2P=10 Y=1-4, m=1 medium-frequency permanent magnet motor single-phase winding layout. The single-phase winding AX, marked as A and X, is composed of 12 equally spaced and equally spaced coils in series, and the coils are at 1, 2, 3, 4, 5, 6; 9, 10, 12, 13; 17, 19, 20; 23, 24, 26, 27; 30, 31, 32, 33, 34, 35; 24 slots. The coil pitches are all Y=1-4.

[0011] The equidistant and equal-turn single-phase windings formed in this way eliminate the third harmonic magnetic potential, and greatly weaken the fifth and seventh harmonic magnetic potentials. The total harmonic magnetic potential is less than 1.5%, and the sine property is very good. achieve the purpose of the invention.

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Abstract

A equal-turn single phase winding of a medium frequency and permanent magnet generator is provided, which is characterized in that the single phase winding is composed of 12 equal-turn windings in series in case of 36 slots and 14 poles, with two winding pitches: 8 windings when the winding pitch Y=1-3, and 4 windings when the winding pitch Y=1-2; the single phase winding is composed of 12 equal-turn windings in series in case of 36 slots and 10 poles as well , but with only one winding pitch Y=1-4. The invention has the advantages that: for a multi-pole permanent magnet single phase generator, the winding can eliminate the difficulty that the generators can not be arranged in accordance to the traditional concentric unequal-turn method due to the multi-poles and sufficient slots; while the single phase winding composed in un-equidistant or equidistant but equal-turn type can accomplish the low magnetometive harmonic wave for the concentric unequal-turn single windings, with simple process and convenient application.

Description

technical field [0001] The invention relates to a winding of an intermediate frequency permanent magnet AC motor, in particular to an equal-turn single-phase winding of an intermediate frequency permanent magnet generator. Background technique [0002] Medium-frequency permanent magnet motors have become the development direction of energy-saving motors. However, medium-frequency permanent magnet motors generally have many poles and few slots. Therefore, the single-phase windings of this kind of motors cannot be arranged according to the concentric structure of traditional single-phase windings with unequal turns. Arranged according to the general equal-turn structure. However, this arrangement of motor windings has a lot of harmonic content in the magnetic potential, and the performance of single-phase motors, such as high noise, low efficiency, and high voltage waveform distortion rate, often cannot meet the requirements of technical standards. Seek for a winding with equ...

Claims

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Application Information

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IPC IPC(8): H02K21/02H02K3/12H02K3/28
Inventor 林政安
Owner TELLHOW SCI TECH CO LTD
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