Method for confirming equivalent-groove fullness rate three-phase double-layer stacking sine winding

Abstract

The invention discloses a method for confirming an equivalent-groove fullness rate three-phase double-layer stacking sine winding. The method comprises the following steps: confirming a stator groove number Z and a pole number 2p of a three-phase motor; according to the stator groove number Z and the pole number 2p, confirming the pitch of a coil; according to the stator groove number Z, the pole number 2p and the pitch of the coil, acquiring a primary turns ratio; according to rules and an equivalent-groove fullness rate, acquiring equivalent-groove limiting conditions; confirming turns numbers Q of each pole, each phase and each group of coils; confirming all turns numbers W1, W2, W3 to Wi of N groups of coils which meet the turns numbers Q of coils of pole phase groups, the primary turns ratio and the equivalent-groove limiting conditions; respectively processing the turns numbers W1, W2, W3 to Wi of N groups of the coils so as to obtain comprehensive harmonic wave intensity and base wave winding coefficients corresponding to each group; judging the comprehensive harmonic wave intensity and the base wave winding coefficients corresponding to each one of N groups, and selecting optimal coil turns numbers W1, W2, W3 to Wi. The method is high in base wave winding coefficient, the winding utilization rate is increased, and most harmonic waves can be weakened.

Description

technical field [0001] The invention relates to the technical field of motor windings, in particular to a method for determining equal-slot full-rate three-phase double-layer stacked sinusoidal windings. Background technique [0002] With the development of science and technology, motors are being used more and more widely. The performance of the motor is affected by many factors, the most critical of which is the motor winding. In the prior art, motors usually use double-layer laminated windings and sinusoidal windings. Among them, the double-layer laminated windings can achieve the purpose of weakening the strong harmonic magnetic potential by sacrificing a small amount of winding coefficient of the fundamental wave and using the short distance and distribution effect of the coils. , but the double laminated winding can only weaken some harmonics, such as the 5th and 7th harmonics, and the other part of the harmonic amplitude (such as the 11th and 13th harmonics) has not ...

AI Technical Summary

Problems solved by technology

In the prior art, motors usually use double-layer laminated windings and sinusoidal windings. Among them, the double-layer laminated windings can achieve the purpose of weakening the strong harmonic magnetic potential by sacrificing a small amount of winding coefficient of the fundamental wave and using the short distance and distribution effect of the coils. , but the double laminated winding can only weaken some harmonics, such as the 5th and 7th harmonics, and the other part of the harmonic amplitude (such as the 11th and 13th harmonics) has not been effectively weakened

The sinusoidal winding effectively weakens most of the harmonics, but the fundamental wave winding coefficient is greatly reduced, and the winding utilization rate is low

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