Magnetic pole piece structure for radial coiling stator
A winding stator and pole piece technology, applied in the shape/style/structure of the magnetic circuit, static components of the magnetic circuit, etc., can solve the problems such as the inability to meet the increasingly stringent requirements of motor performance and the inability to fully exert the maximum performance of the motor, etc. Achieve the effect of large output torque, improved overall performance, and increased overlapping area
Active Publication Date: 2009-05-27
SUNONWEALTH ELECTRIC MACHINE IND
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Problems solved by technology
[0011] However, today's electronic information products and consumer electronics emphasize high-efficiency operation, so the requirements for motor performance are getting higher and higher. The shape of the pole piece defined by this ratio (0.65-0.85) cannot maximize the maximum motor performance. The performance is fully utilized, so it has gradually been unable to meet the industry's increasingly stringent requirements for motor performance
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[0023] In order to make the purpose, features and effects of the present invention more obvious and easy to understand, the following particularly enumerates the magnetic pole pieces (such as figure 1 shown) with the pole pieces of the nine-pole radially wound stator (such as figure 2 Shown) two implementation types, and describe in detail with the accompanying drawings.
[0024] Among them, the magnetic pole piece is punched from a plate with an appropriate thickness and good magnetic permeability, and the diameter is preferably between 13 and 16mm, which includes:
[0025] A shaft hub 10, the center of the shaft hub 10 has a hole 11;
[0026] A plurality of poles 12, each pole 12 is integrally formed with the hub 10, the number of which is a multiple of 3 of at least 6, and each pole 12 extends radially from the periphery of the hub 10, and At the end a pole shoe 13 is formed which expands tangentially, forming a symmetrical configuration.
[0027] Among them, each radia...
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The invention relates to an iron pole piece structure for a radial winding stator. The iron pole piece comprises a shaft hub, and a plurality of poles, wherein the center of the shaft hub is provided with a hole, each pole is formed integrally with the shaft hub, and each pole extends in the radial direction around the shaft hub radially and expands tangentially at the tail end to form a pole shoe; and the iron pole piece is characterized in that the ratio of an angle of a single pole shoe to a pole distance angle of two adjacent poles is between 0.86 and 0.95. The iron pole piece structure uses the optimized ratio alpha to define the shape of the iron pole piece to increase an overlapping area of inductance and torque, can reduce cogging torque of a motor, and strengthens self-starting capability and shortens torque ripple of the motor, so as to promote overall performance of the motor.
Description
technical field [0001] The present invention relates to a radially wound stator pole piece structure, in particular to a shape defined by an optimal ratio α to increase the overlapping area of inductance and torque and reduce the cogging torque of the motor. And the self-starting ability of the motor is strong, the torque ripple is small, and the overall efficiency of the motor is improved. Background technique [0002] The radial wound stator structure is formed by overlapping multiple magnetic pole pieces of the same shape and winding metal wires on the pole teeth. [0003] Among them, the pole piece structure is as figure 1 As shown, the magnetic pole piece is punched from a plate with appropriate thickness and good magnetic permeability, which includes: [0004] A shaft hub 10, the center of the shaft hub 10 has a hole 11; [0005] A plurality of poles 12 (six shown in the figure), each pole 12 is integrally formed with the hub 10, and each pole 12 extends radially ...
Claims
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IPC IPC(8): H02K1/14
Inventor 洪银树陈志男王启民麦鸿钦
Owner SUNONWEALTH ELECTRIC MACHINE IND