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Single-phase brushless direct current motor and electrical equipment

A brushed DC motor, single-phase technology, applied in the field of electrical equipment, single-phase brushless DC motor, can solve the problems of low efficiency, large torque fluctuation, small output torque, etc.

Pending Publication Date: 2021-09-07
GUANGDONG WELLING ELECTRIC MACHINE MFG +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The single-phase brushless DC motor used in the prior art has a four-slot and four-pole structure, which has the following problems: small output torque, low efficiency, and large torque fluctuations

Method used

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  • Single-phase brushless direct current motor and electrical equipment
  • Single-phase brushless direct current motor and electrical equipment
  • Single-phase brushless direct current motor and electrical equipment

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Embodiment Construction

[0055] In order to understand the above-mentioned purpose, features and advantages of the present invention more clearly, the present invention will be further described in detail below in conjunction with the accompanying drawings and specific embodiments. It should be noted that, in the case of no conflict, the embodiments of the present application and the features in the embodiments can be combined with each other.

[0056] In the following description, many specific details are set forth in order to fully understand the present invention. However, the present invention can also be implemented in other ways different from those described here. Therefore, the protection scope of the present invention is not limited by the specific details disclosed below. EXAMPLE LIMITATIONS.

[0057] Refer below Figure 1 to Figure 7 The single-phase brushless DC motor and electrical equipment described in some embodiments of the present invention are described.

[0058] Such as figure ...

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Abstract

The invention provides a single-phase brushless direct current motor and electrical equipment. The single-phase brushless direct current motor comprises a stator and a rotor, wherein the stator comprises a stator iron core, the stator iron core comprises a stator magnet yoke and an even number of stator teeth connected with the stator magnet yoke, any stator tooth comprises a tooth body extending in the radial direction and a tooth crown connected with the tail end of the tooth body, the tooth crown comprises two pole shoes, and the two pole shoes extend towards the two sides of the corresponding tooth body in the rotating direction of the rotor; and the number of poles of the rotor is three times of the number of stator teeth. Through the above design, the number of pole pairs of the stator and the rotor is unequal, and the rotor magnetic field acts with the stator magnetic field after modulation to generate more working harmonics, thereby realizing the torque amplification of a vernier permanent magnet motor, increasing the output torque of the motor, and improving the operation efficiency of the motor. Meanwhile, the harmonic content in the counter electromotive force of the motor is lower, the waveform is more sinusoidal, the motor runs more stably, the torque ripple is smaller, and the vibration noise performance of the motor is improved.

Description

technical field [0001] The invention relates to the technical field of motors, in particular to a single-phase brushless DC motor and electrical equipment including the single-phase brushless DC motor. Background technique [0002] Single-phase brushless DC current has the characteristics of small size, light weight, simple structure, and low manufacturing cost. It is often used in low-power equipment such as water pumps, refrigerator fans, and computer drive motors. The single-phase DC brushless motor used in the prior art has a four-slot and four-pole structure, which has the following problems: small output torque, low efficiency, and large torque fluctuation. Contents of the invention [0003] In order to solve at least one of the above technical problems, an object of the present invention is to provide a single-phase brushless DC motor. [0004] Another object of the present invention is to provide an electrical device including the above-mentioned single-phase brus...

Claims

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Application Information

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IPC IPC(8): H02K1/12H02K1/14H02K1/27
CPCH02K1/12H02K1/14H02K1/2786H02K2201/03
Inventor 葛梦吴迪龚黎明诸自强
Owner GUANGDONG WELLING ELECTRIC MACHINE MFG
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