Excitation integrated type brushless synchronous motor

Abstract

The invention discloses an excitation integrated type brushless synchronous motor. The excitation integrated type brushless synchronous motor structurally comprises a stator part and a rotor part. The stator part comprises a stator iron core, an armature winding, a stator excitation winding, an end cover and a machine shell. The rotor part comprises a rotor iron core, a rotating shaft, a rotor excitation winding and a commutation diode. The excitation integrated type brushless synchronous motor has the advantages that a sliding ring and an electric brush which are necessary to brush motor excitation are eliminated so that brushless excitation of a rotor excitation electric excitation motor is realized; a motor is not need increasing, and brushless excitation can be realized as long as two windings are increased on the basis of an original electric excitation motor scheme; a rotor pulse vibration excitation winding (8) further arranged on a rotor plays a role in inducting that magnetic flow generated by a stator excitation winding (3) provides direct current excitation currents for a rotor direct current excitation winding (9), and magnetic flow generated by the rotor pulse vibration excitation winding (8) and the direct current excitation winding (9) jointly act on working clearance, so that the problem of excitation efficiency reduction caused by the further arrangement of a rotor excitation winding is solved; brushless excitation of a rotor excitation hybrid excitation motor is realized.

Description

technical field [0001] The invention relates to an excitation integrated brushless synchronous motor, which belongs to the technical field of brushless excitation synchronous motors. Background technique [0002] For rotor excited motors, two slip rings and brushes are required to introduce the excitation current. A brush slip ring requires frequent maintenance, and this contact with conductive parts is often the link with the highest failure rate in the motor. Brushless excitation is realized in the design of the motor, which can improve the stability of the whole machine, can run for a long time, avoids the electric spark problem caused by the rotating contact conductive part, and is easy to maintain, especially suitable for use under harsh conditions. [0003] In the current brushless solution, there are three categories of methods. 1. The excitation winding can be placed on the stator to realize brushless conveniently. Such as electric excitation claw pole motor, doub...

AI Technical Summary

Problems solved by technology

This solution has the problem of long motor axis and complex structure

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