A multi-voltage single-layer winding of a two-pole single-phase and three-phase permanent magnet generator
A permanent magnet generator, multi-voltage technology, applied to the shape/style/structure of the winding conductor, which can solve the problems of high slot utilization and high potential harmonic content
Active Publication Date: 2018-04-10
TELLHOW SCI TECH CO LTD
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Problems solved by technology
The single-layer winding has no interlayer insulation, the slot utilization rate is high, and it is convenient for mechanical off-line, but the stator winding is mostly full-pitch winding, the potential harmonic content is high, and the distortion rate of the rotor voltage waveform is often greater than 10%, which does not meet the requirements of international standards.
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[0012] In order to further describe the present invention in detail, it will be described below in conjunction with the examples. Implemented in a two-pole permanent magnet generator, the motor is 15Kw, 2 poles, 3000 rpm, the rotor is a built-in permanent magnet, two poles, the number of stator slots is 30 slots, and the stator winding layout is as attached Figure 1-4 As shown, each phase has 6 coils, which are divided into 2 groups, and each group is 3 concentric coils in series, and the layout of phase A is as follows figure 1 As shown, the first group of winding a of phase A 1 x 1 It is composed of 3 concentric coils 1-16, 3-14, 5-12 in series, and the lead wires are drawn from the 1st slot and the 12th slot, respectively marked as a 1 , x 1 , called a 1 x 1 Winding, 2nd winding x 2 a 2 , composed of three concentric coils in series 16-1, 18-29, 20-27, the lead wires are drawn from the 16th slot and the 27th slot, respectively marked x 2 , a 2 , called x 2 a 2 w...
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The invention discloses a multi-voltage single-double-layer winding of a dipolar single-three-phase permanent magnetic generator. The winding is characterized in that a rotor permanent magnet is dipolar, a three-phase winding is arranged in a generator with 300 stator slots, six coils are arranged for each pole, every six coils are divided into two groups, each group comprises three coils, and each group is formed by connecting the concentric type coils in series, an A-phase winding includes windings a1x1 and x2a2, the structures of A, B and C three-phase windings are totally similar, a B-phase winding includes windings b1y1 and y2b2, a C-phase winding includes windings c1z1 and z2c2, the three phases mutually form an electric angle of 120 degrees, the winding is a three-phase symmetric winding, double-layer slots of the winding do not employ interlayer insulation, all slots are free from the interlayer insulation, the number of conductors in each slot is the same, mechanical de-wiring is facilitated, a third harmonic winding coefficient and a three-odd harmonic winding coefficient in each winding are zero, the phase voltage waveform distortion rate is smaller than 5%, the parallel branch number can be one and can also be two, and four connection methods indicated in the descriptions can be used.
Description
technical field [0001] The invention relates to a permanent magnet generator, in particular to a multi-voltage single-layer winding of a single-phase or three-phase permanent magnet generator. Background technique [0002] In small permanent magnet generators, single-layer windings are widely used. The single-layer winding has no interlayer insulation, the slot utilization rate is high, and it is convenient for mechanical off-line, but the stator winding is mostly full-pitch winding, the potential harmonic content is high, and the distortion rate of the rotor voltage waveform is often greater than 10%, which does not meet the requirements of international standards. In the international market, small permanent magnet generators not only require the phase voltage waveform distortion rate to be less than 5%, but also require single-phase and three-phase common use, and require multiple connection methods to meet the requirements of multiple voltage levels. Contents of the in...
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IPC IPC(8): H02K3/28H02K3/12
CPCH02K3/12H02K3/28
Inventor 林政安
Owner TELLHOW SCI TECH CO LTD