Equal circle type single-phase winding of intermediate frequency permanent magnet generator
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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, low efficiency, and few slots, and achieve small magnetic potential harmonics, simple process, Implement convenient effects
Active Publication Date: 2010-06-09
TELLHOW SCI TECH CO LTD
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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.
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Embodiment 1
[0009] Embodiment 1: as figure 1 As shown, a Z=36, 2P=14, Y=2, Y=1, m=1 medium-frequency permanent magnet motor single-phase winding layout diagram single-phase winding AX, the leading head is marked as A, X consists of 12 turns Equal-turn coils are connected in series, and the pitch Y=2 has 8 turns, specifically in slots 2, 4; 7, 9; 12, 14; 15, 17; 20, 22; 25, 27; 30, 32 ; 35,1 among the sixteen grooves, there are 4 circles of pitch Y=1, specifically in the eight grooves of grooves 18,19; 23,24; 28,29; The single-phase winding with equal turns eliminates the third harmonic magnetic potential, and greatly weakens the fifth and seventh harmonic magnetic potentials. The total harmonic magnetic potential is less than 1.5%, and the sinusoidality is very good. achieve the purpose of the invention.
Embodiment 2
[0010] Embodiment 2: as figure 2 As shown, a Z=36 2P=10Y=3, 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=3.
[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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