Single Phase Brushless DC Motor

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.

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 ...

AI Technical Summary

Problems solved by technology

The brushless DC motor in the prior art has a starting dead zone, the cogging torque of the motor is relatively large, the stability of the motor operation is poor, and the service life is not long enough

In addition, the traditional PI (proportional and integral control) or PID (proportional, integral and differential control) control is currently the most widely used technology in the speed control of single-phase brushless DC motors, but it also has the problem of poor dynamic response

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