Single Phase Brushless DC Motor

A brushed DC motor, single-phase technology, used in single-phase motor control, single motor speed/torque control, electrical components and other directions, can solve the problems of large motor cogging torque, long service life, poor motor stability, etc. Achieve the effect of large peak torque, easy processing and manufacturing, and small torque fluctuation

CN102195435BActive Publication Date: 2016-08-03HANGZHOU KANGBEI MOTOR
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
Publication Date
2016-08-03

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Abstract

The invention relates to the technical field of motors, in particular to a single-phase brushless DC motor. It solves technical problems such as unreasonable design of the prior art. The casing is provided with a stator assembly, and a rotor is threaded through the stator assembly. The stator assembly includes a rear frame, and a stator body is arranged on the rear frame. The stator body includes a ring body, and a number of winding bodies are arranged inside the ring body. It includes a connecting body and an arc body arranged on the connecting body, the middle part of the arc body is connected with the connecting body, each arc body has a different arc radius, windings are wound on the winding body, each winding is connected in series and The adjacent windings are reversed, and the position sensor on the housing extends into the rotor poles. Its advantages are as follows: 1. It is easy to process and manufacture, effectively eliminates the starting dead zone of the single-phase brushless DC motor, and reduces the cogging moment of the motor. 2. The system has good adaptability, fast dynamic response, small torque fluctuation and large peak torque during operation; in a wide working area, the system can maintain high-efficiency operation.
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Description

technical field

[0001] The invention relates to the technical field of motors, in particular to a single-phase brushless DC motor. Background technique

[0002] The brushless DC motor consists of a motor body and a driver, and is a typical mechatronic product. A brushless motor refers to a motor without a brush and a commutator, also known as a commutator-less motor. The motor itself of the DC brushless motor is an electromechanical energy conversion part. In addition to the motor armature and permanent magnet excitation, it also has sensors. The motor itself is the core of the brushless DC motor. It is not only related to performance indicators, noise and vibration, reliability and service life, but also involves manufacturing costs and product costs. Due to the permanent magnetic field, the DC brushless motor gets rid of the traditional design and structure of the general DC motor, and meets the requirements of various application markets. The brushless DC motor in the ...

Examples

Embodiment Construction

[0021] like figure 1 and 2 As shown, the single-phase brushless DC motor includes a casing 1, a stator assembly 2 is arranged inside the casing 1, and a rotor 3 made of permanent magnet material is pierced in the stator assembly 2. like image 3 and 4 As shown, the stator assembly 2 includes a rear frame 21 on which a stator body 22 is arranged. like Figure 5 As shown, the stator body 22 includes a ring body 221, and a number of winding bodies 222 are arranged inside the ring body 221. The winding body 222 includes a connecting body 22a connected to the inside of the ring body 221 and is arranged on the connection The arc body 22b on the body 22a, the middle part of the arc body 22b is connected with the connecting body 22a, and each arc body 22b has a different arc radius. The number of winding bodies 222 is four, and the centers of the four arc bodies 22 b are distributed around the center of the circle body 221 . like image 3 and 4 As shown, windings 23 are wound ...