Permanent-magnet variable-speed hub motor with complementing excitation rotor

A variable speed hub and excitation technology, applied in the direction of electrical components, electromechanical devices, magnetic circuit rotating parts, etc., can solve the problems of complex motor structure, unsatisfactory technical effect, increased cost, etc., and achieve simple and compact structure, easy Mobile, reliable results

Inactive Publication Date: 2011-05-18
杨荷
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Due to the complex structure of the motor using this method, the cost is in

Method used

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  • Permanent-magnet variable-speed hub motor with complementing excitation rotor
  • Permanent-magnet variable-speed hub motor with complementing excitation rotor
  • Permanent-magnet variable-speed hub motor with complementing excitation rotor

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Embodiment Construction

[0045] figure 1 It is a structural schematic diagram of the present invention, the rotor is a permanent magnet variable speed wheel hub motor with complementary excitation, including a hub 6, a rotor yoke 5 fixed on the inner circle of the hub, and a stator 16 located in the inner circle of the rotor yoke 5, the rotor yoke 5 The inner circle is provided with an excitation magnetic source, the circumference of the stator 16 is provided with a winding 17, the lead cable 10 of the winding 17 passes through the hole on the stator shaft 18, and there is an air gap 4 between the iron core of the winding 17 and the excitation magnetic source , the two ends of the stator shaft 18 are respectively provided with bearings 12, the end covers at the left and right ends of the wheel hub 6 are supported on the stator shaft 18 through the bearings 12, and the left and right end covers 11a, 11b are respectively connected to the wheel hub 6 through screws or / and keys. fixed in the direction so...

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PUM

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Abstract

The invention relates to a permanent-magnet variable-speed hub motor with a complementing excitation rotor. Two groups of excitation magnetic sources of which the polarities complement are arranged at the inner rotor surface of a hub, a main magnetic flux source excitation body and an auxiliary magnetic flux source excitation body are respectively configured with alternate polarities by a plurality of permanent magnets in a rotor yoke to form an annular shape which takes a stator shaft as the center, a polar distance is staggered between the peripheral polarity distributions of the auxiliary magnetic flux source excitation body and the main magnetic flux source excitation body, a stator and the stator shaft are matched via a spline to form a stator which can move axially, and a plurality of rollers which push the stator shaft to move axially through an eccentric exercise are arranged between a track plate arranged in a left end cover of the hub and a push disc arranged on the stator, so that the magnetic flux is reduced due to the axial motion of the stator to change the torque-rotating speed properties of the motor and realize speed changing. According to the invention, Not only can the mechanical properties of the permanent-magnet variable-speed hub motor per se be improved, but also the full power speed regulating ranges of the permanent-magnet variable-speed hub motor can be increased, meanwhile, the motor size is not increased, and the production cost is saved.

Description

technical field [0001] The invention relates to a permanent magnet brushless motor, in particular to a permanent magnet variable speed wheel hub motor designed for driving an electric vehicle with a complementary excitation rotor. Background technique [0002] The permanent magnet brushless motor used for the power unit of the electric two-wheel vehicle in the prior art usually adopts a low-speed hub motor, which saves the mechanical transmission, does not need lubrication, has low noise, and is maintenance-free. It has been widely used in the field of electric two-wheel vehicles. widely used. However, due to its own mechanical characteristics, this low-speed in-wheel motor can only be adjusted by reducing the speed, but not by increasing the speed with constant power. In practical applications, the climbing ability is poor and the speed cannot be increased. The mechanical characteristics of the motor refer to the functional relationship between the torque output by the mot...

Claims

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Application Information

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IPC IPC(8): H02K29/08H02K1/27
Inventor 杨荷
Owner 杨荷
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