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Three-phase lap winding having fractional slot and fractional turn

A fractional-turn, stacked-winding technology, applied in the field of three-phase windings of intermediate frequency generators, can solve the problems of difficult adjustment of the number of turns, troublesome process implementation, and difficult design, and achieve easy voltage waveform distortion rate and small potential harmonics. , the effect of good voltage waveform

Active Publication Date: 2006-12-06
TELLHOW SCI TECH CO LTD
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Problems solved by technology

[0002] Intermediate frequency generators or intermediate frequency motors often have many poles and few slots. The number of slots per pole and phase is generally fractional. For the sinusoidal winding with fractional slot concentric type, it is difficult to design with unequal turns and unequal distances, and the number of turns is not easy to adjust. , and the process implementation is very troublesome

Method used

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  • Three-phase lap winding having fractional slot and fractional turn

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Embodiment Construction

[0007] Such as figure 1 As shown, A, B, and C are three-phase symmetrical windings, with a mutual difference of 120° in electrical angle, and the distribution order of the turns is the same for the three phases, that is, the distribution order of the turns of the B phase and the C phase is the same as that of A. Among them, phase A is arranged as 1-4, 13-16, 17-20, 18-21, 25-28, 37-40, 41-2, 42-3, a total of 8 turns, each turn is 4 turns, and 2 -5, 7-10, 12-15, 26-29, 31-34, and 36-39 have 6 turns in total, and the number of turns in each turn is 5 turns. Phase B lags phase A by 120° electrical angle, phase C lags phase B by 120° electrical angle, A, B, and C form a 120° electrical angle with each other, forming a three-phase symmetrical system, the 6 outgoing line numbers are the first slot is A, The 8th slot is B, the 15th slot is C, the 27th slot is Y, the 34th slot is Z, and the 41st slot is X. The wiring rules of the turns are B phase, C phase and A phase. The stacked w...

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Abstract

Characters of the invention are that equidistant pile windings are adopted in three-phase a.c. winding, where number of slots for each phase and each pole is a fraction, and mean turn is a fraction. Advantages are: optimizing winding, good waveform of voltage, small regulation rate for transient voltage, small harmonic wave of magnetic potential and electric potential, and easy of controlling waveform deviation factor of phase voltage under 2%.

Description

technical field [0001] The invention relates to a three-phase winding of an intermediate frequency generator, in particular to a three-phase stacked winding with fractional slots and fractional turns. Background technique [0002] Intermediate frequency generators or intermediate frequency motors often have many poles and few slots. The number of slots per pole and phase is generally fractional. For the sinusoidal winding with fractional slot concentric type, it is difficult to design with unequal turns and unequal distances, and the number of turns is not easy to adjust. , and the process is very troublesome to realize. Contents of the invention [0003] The purpose of the present invention is to provide a three-phase stacked winding with fractional slots and fractional turns, which brings great convenience to design adjustment and process implementation. [0004] The present invention is realized in this way. In the three-...

Claims

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Application Information

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