Speed-adjustable rotating electric machine with electromotion, electrification feedback and electro-magnetic braking functions

A technology of rotating electric machines and electromagnetic braking, which is applied in the direction of electrical components, electromechanical devices, etc., can solve the problems of not having the performance of electromagnetic braking, not having the function of electromagnetic braking, etc., and achieve the effect of low cost

Inactive Publication Date: 2008-11-12
ZHEJIANG UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The driving motor of electric vehicles in the prior art usually adopts AC asynchronous or DC motor, which has the function of electric power generation and feedback; but it does not have the function of electromagn

Method used

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  • Speed-adjustable rotating electric machine with electromotion, electrification feedback and electro-magnetic braking functions
  • Speed-adjustable rotating electric machine with electromotion, electrification feedback and electro-magnetic braking functions
  • Speed-adjustable rotating electric machine with electromotion, electrification feedback and electro-magnetic braking functions

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0027] refer to figure 1 , a speed-adjustable rotating electrical machine with electric, power generation feedback and electromagnetic braking functions, the adjustable-speed rotating electrical machine is a variable reluctance double salient pole motor, and the variable reluctance double salient pole motor includes a stator 2 and The tooth widths of salient poles of rotor 1, stator 2, and rotor 1 are all greater than the slot width, the number of stator poles is greater than the number of rotor poles, the number of stator poles is an integral multiple of 6, and the number of rotor poles is the same integral multiple of 4. attached figure 1 The multiple of the motor model in the medium is 2, which is a three-phase 12 / 8-pole reluctance motor. In order to reduce the torque fluctuation during motoring, it is necessary to reduce the step angle by increasing the number of poles, and its multiple can be increased to 3, 4, 5. And it is required that the winding direction of the sam...

Embodiment 2

[0040] refer to figure 2 , a speed-adjustable rotating electrical machine with electric, power generation feedback and electromagnetic braking functions, the adjustable-speed rotating electrical machine is a variable reluctance double salient pole motor, and the variable reluctance double salient pole motor includes a stator 2 and Rotor 1, the salient pole tooth width of rotor 1 is greater than the slot width, the number of stator poles is smaller than the number of rotor poles, the number of stator poles is an integer multiple of 4, and the number of rotor poles is the same integer multiple of 6, with figure 2 The multiple of the motor model in the middle is 2, which is a two-phase 8 / 12-pole reluctance motor. In order to reduce the torque fluctuation during motoring, it is necessary to reduce the step angle by increasing the number of poles, and its multiple can be increased to 3, 4, 5. In order to make the motor self-starting in both forward and reverse directions, it is ...

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PUM

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Abstract

A variable speed rotary motor has the functions of electric feedback, power generation feedback and electromagnetic brake. The variable speed rotary motor is a variable reluctance doubly salient pole motor which comprises a stator and a rotor. An exciting winding is arranged on a salient pole of the stator. The windings with the same phase have opposite winding directions on the neighboring salient poles. Windings on every pole are connected with each other in series. Simultaneously, when the electromagnetic brake is realized to lead the winding to be electrified continuously, the total pole arc edge distance got by adding every pole arc of the salient poles on the circumference of the stator and rotor is between 60 degrees to 200 degrees, wherein, every pole arcs coincide by attracting each other. Furthermore, the coincidental pole arcs are symmetrically distributed on the circumference. The tooth width of the rotor salient pole is bigger than the groove width. The invention provides the variable speed rotary motor which has the functions of the electric feedback, the power generation feedback and the electromagnetic brake.

Description

technical field [0001] The invention relates to an adjustable speed rotating electrical machine. Background technique [0002] Electric vehicles are a means of energy-saving and emission-reducing transportation, and have been widely valued by countries all over the world, and are recognized as energy-saving and environmentally friendly future vehicles. Electric vehicles are mainly divided into three categories: fuel cell vehicles FCV, hybrid electric vehicles HEV and pure electric vehicles EV. And any kind of electric vehicle in these three classes all will use electric motor to drive wheel to travel as actuator. [0003] The driving motor of electric vehicles in the prior art usually adopts AC asynchronous or DC motor, which has the function of electric power generation and feedback; but it does not have the function of electromagnetic braking; in addition, the hub motor in electric bicycles usually adopts DC motor , it also only has the function of electric or power gene...

Claims

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Application Information

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IPC IPC(8): H02K29/00H02K29/10
Inventor 王贵明王金懿
Owner ZHEJIANG UNIV OF TECH
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