A speed regulating component of a permanent magnet brushless motor

Abstract

The invention provides a speed regulation component of a permanent magnet brushless motor. The speed regulation component comprises a casing (100), a stator component (200), and a rotor component (300). A lifting plate (305) is arranged rightly opposite to the armature winding (202) and is located between a main rotating shaft (301) and an armature winding (202). A permanent magnet (306) adapted to the armature winding (202) is embedded in the lifting plate (305) and is arranged rightly opposite to the armature winding (202). A lifting link assembly is arranged among the end surface of the lifting plate (305) close to the main rotating shaft (301), a fixed cylinder (303) and a movable cylinder (304), is used for supporting the lifting plate (305) and can be lifted and lowered. An externalforce slides the movable cylinder (304) close to the fixed cylinder (303), so that the armature winding (202) and the permanent magnet (306) move close to each other and the rotation speed of the mainrotating shaft (301) decreases. The external force slides the movable cylinder (304) away from the fixed cylinder (303), so that the armature winding (202) and the permanent magnet (306) move away from each other and the rotation speed of the main rotating shaft (301) increases.

Description

technical field [0001] The invention relates to a brushless permanent magnet motor, in particular to a speed regulating component of the permanent magnet brushless motor. Background technique [0002] Compared with traditional brushed motors, permanent magnet brushless motors have many advantages, such as simple and compact structure, small size, small mass, low loss, and high efficiency, so they have very broad application prospects and research value. At present, permanent magnet brushless motors The speed regulation of the brush motor is mainly by changing the voltage loaded on the armature winding, thereby changing the current passing through the stator winding, and then changing the strength of the magnetic field generated by the current for speed regulation, which increases the circuit of the electronic commutation part The complexity of the control makes it difficult to maintain and repair, and the aging of the long-term use of the circuit is prone to electricity safe...

AI Technical Summary

Problems solved by technology

[0002] Compared with traditional brushed motors, permanent magnet brushless motors have many advantages, such as simple and compact structure, small size, small mass, low loss, and high efficiency, so they have very broad application prospects and research value. At present, permanent magnet brushless motors The speed regulation of the brush motor is mainly by changing the voltage loaded on the armature winding, thereby changing the current passing through the stator winding, and then changing the strength of the magnetic field generated by the current for speed regulation, which increases the circuit of the electronic commutation part The complexity of the control makes it difficult to maintain and repair, and the aging of the long-term use of the circuit is prone to electricity safety problems. Therefore, it is necessary for the present invention to provide a smart structure, simple principle, low production cost, convenient repair and maintenance, constant voltage loading and driving. The speed control component of the permanent magnet brushless motor for speed control by changing the magnetic flux

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