Concentrated-winding motor, generator and motor
A concentrated winding and generator technology, applied in the field of generators, motors, and concentrated winding motors, can solve problems such as large positioning torque, and achieve the effects of maintaining torque, increasing frequency, and saving magnetic steel.
Active Publication Date: 2013-12-04
深圳市大富动力装备有限公司
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Problems solved by technology
Therefore, the most effective measure for the traditional distributed winding permanent magnet motor to suppress the positioning torque, the concentrated winding permanent magnet motor cannot be used, and the excessive positioning torque of the concentrated winding permanent magnet motor is still a big problem
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[0027] The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only some, not all, embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without creative efforts fall within the protection scope of the present invention.
[0028] like figure 1 As shown, a concentrated winding motor 100 of the present invention, the rotor yoke 10 is pasted with 2P pieces of magnetic steel 20 with N and S polarities distributed alternately with a spacing of Sm, and the stator core 30 is provided with Z slots 31 and Z Stator teeth 32. According to traditional theoretical analysis and experiments, the period of the positioning torque of the permanent magnet motor with the number of poles and slots is: T...
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The present invention relates to a permanent magnet motor with a concentrated winding, and more particularly to a motor with a concentrated winding, a generator, and an electric motor. 2P pieces of magnetic steel, with the spacing being Sm, with alternating N and S polarities adhere to a rotor yoke of the motor with a concentrated winding, and an iron stator core is provided with Z slots and Z stator teeth. In the motor with a concentrated winding, the slot width Sc between two adjacent stator teeth and the spacing Sm between two adjacent pieces of magnetic steel satisfy: Sm / Sc=(0.83 to 1.3); the ratio of the width taum of the magnetic steel to the polar distance tau satisfies: taum / tau>=(0.75 to 0.9); air gap surfaces of the stator teeth of the iron stator core are in a protruding-recessed-protruding shape, a bi-protruding wave shape, or a tri-protruding wave shape. In the motor with a concentrated winding of the present invention, the stator air gap surface of a high-order waveform is further used, so as to further increase the frequency of positioning torque, thereby homogenizing the air gap magnetoresistance, and inhibiting the positioning torque.
Description
technical field [0001] The invention relates to a permanent magnet motor with concentrated winding, in particular to a concentrated winding motor, generator and motor. Background technique [0002] The rotors of permanent magnet motors generally use rare earth permanent magnets, such as NdFeB permanent magnets. Rare earth permanent magnet materials are becoming scarcer and more expensive, so it is necessary to reduce the amount of permanent magnets and improve the utilization rate of permanent magnets. [0003] Permanent magnet motors with concentrated windings can significantly improve the power and energy indicators of permanent magnet motors, such as: winding utilization, efficiency, power volume ratio, torque volume ratio, etc., and improve the motor manufacturing process. [0004] However, the excessively large cogging torque is still a problem for concentrated winding permanent magnet motors. The optimal number of magnetic poles and cogging slots can suppress the cogg...
Claims
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Patent Timeline
Login to View More IPC IPC(8): H02K1/16H02K1/27
CPCH02K1/278H02K1/146H02K1/2786H02K2213/03H02K29/03H02K1/27915
Inventor 漆亚梅
Owner 深圳市大富动力装备有限公司