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Bidirectional hybrid excitation brushless electric machine

A technology of brushless motor and mixed excitation, which is applied in the direction of electrical components, electromechanical devices, magnetic circuit static parts, etc., can solve problems such as the difficulty of smooth speed regulation of double salient permanent magnet motors, and achieve good scientific research value and application prospects. Easy to adjust, simple and reliable structure

Inactive Publication Date: 2009-01-21
SOUTHEAST UNIV
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  • Application Information

AI Technical Summary

Problems solved by technology

[0003] Technical problem: The purpose of this invention is to provide a two-way hybrid excitation brushless motor with simple structure, reliable operation, maintenance-free, no winding on the rotor, and high efficiency, and at the same time solve the difficulty of smooth speed regulation of double salient pole permanent magnet motors The problem

Method used

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  • Bidirectional hybrid excitation brushless electric machine
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  • Bidirectional hybrid excitation brushless electric machine

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Embodiment Construction

[0014] 1. The basic structure of the two-way hybrid excitation brushless motor is the same as that of other rotating motors (such as figure 1 ), there is a fixed part stator, there is a rotating part rotor, there is a small radial air gap 2 between the stator and rotor. The stator is composed of stator winding 12, stator core (including silicon steel sheet lamination part and electrical pure iron part), permanent magnet 16, position sensor 7, excitation pole shoe 6, excitation winding 1, and side magnetic conductive steel plate 5. Among them, stator teeth 11 and slots are punched on the inner circle of the iron core of the laminated part of the silicon steel sheet, and the pole arc of the teeth is 1 / 2 of the tooth pitch, and the winding in the slot is made of insulated copper wire; A rotor position sensor 7 is fixed and consists of a Hall sensor. The rotor is composed of a rotor core (containing silicon steel laminated parts and electrical pure iron parts) and a rotating shaf...

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Abstract

A two-way mixed excitation brushless motor is a mixed-excited adjustable-speed motor combining a permanent magnet and electric excitation, the stator yoke and the rotor yoke of which are applied with a double-yoke structure, the outer yoke of the stator and the internal yoke of the rotor for axial magnetic conduction are ring cylinders, among which, the outer yoke of the stator is divided into several equal parts by a magnet, the length of the outer yoke and the internal yoke is the same with that of an iron core laminated by silicon-steel sheets, the outer yoke of the stator is in the shell, its internal yoke is in the outer yoke, the two make up of stator yoke of a double yoke structure. The internal yoke of the rotor jackets the spin axis closely with the outer yoke wrapping outside of it, a rotor tooth is on the outer yoke. The internal yoke and the outer yoke of the rotor make up of a double yoke part of the rotor.

Description

technical field [0001] The invention is a hybrid excitation speed-regulating motor combined with permanent magnet and electric excitation, which adopts a double-salient pole structure with axial and radial common excitation, and belongs to the technical field of brushless direct current motors. Background technique [0002] The traditional asynchronous motor has the advantages of simple structure, no maintenance and high reliability, and has been widely used in the field of ordinary motor drive, but its speed regulation performance is not good. Although frequency conversion technology or other control technologies can be used to achieve speed regulation, its cost is often relatively high, and the effect comparable to that of DC motors cannot be obtained. For ordinary DC motors, the armature winding current and the field winding current can be controlled separately, and the speed regulation performance is good. However, due to the brushes and commutators, the maintenance work...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H02K29/06H02K1/17
Inventor 胡虔生易龙芳
Owner SOUTHEAST UNIV
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