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Large braking torque eddy current retarder rotor

An eddy current retarder and braking torque technology, applied in the field of deceleration braking and eddy current retarder rotor, can solve the problems of inability to meet the braking requirements of high-speed trains, small braking torque, high resistivity, etc. , to achieve the effect of large braking torque, improved magnetic field and convenient processing

Inactive Publication Date: 2009-12-09
HUAZHONG UNIV OF SCI & TECH
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  • Summary
  • Abstract
  • Description
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Problems solved by technology

However, this type of material has a large resistivity and produces small eddy currents. Therefore, the braking torque generated by the rotor disk is small, generally around 2000N·m, while the current high-speed train retarder requires a braking torque of 4000-5000N·m , therefore, the braking torque provided by the rotor of the current eddy current retarder cannot meet the braking requirements of vehicles such as high-speed trains

Method used

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Embodiment Construction

[0013] The present invention will be further described below in conjunction with the accompanying drawings and embodiments.

[0014] The invention applies the motor winding theory to the design of the rotor of the large torque eddy current retarder. figure 1 It is a schematic diagram of the present invention. The rotor disk 1 is made of magnetically conductive material. Grooves are processed in the circumferential and radial directions on the rotor disk. Coils 2 processed by good conductors are placed in the grooves. The coils 2 are connected end to end to form a closed loop.

[0015] figure 2 It is a structural schematic diagram of Embodiment 1 of the present invention. The rotor in Embodiment 1 includes five rotor disks, each of which has the same geometric structure, and seven electromagnetic coils are installed in the circumferential direction, and the seven electromagnetic coils are evenly distributed on the rotor disk , so that the force on the rotor at any moment is t...

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Abstract

The invention provides a large braking torque eddy current retarder rotor, comprising one or more than one rotor discs which are laminated, and at least one closed solenoid coil is arranged on the rotor disc. The rotor can produce large eddy current and provides the braking torque with thousand-meter height; in addition, the structure is simple and form, the processing is convenient, and the rotor can be applied to retarding braking of various vehicles such as automobiles, trains and the like.

Description

technical field [0001] The invention belongs to the field of electromagnetic devices for vehicle braking, in particular to an eddy current retarder rotor, which is suitable for deceleration and braking of automobiles and high-speed trains. Background technique [0002] At present, the rotor of the eddy current retarder is a thin disc shape processed from a whole piece of steel. When the rotor rotates, the rotor disc cuts the stator poles to generate a magnetic field, and eddy currents are generated in the rotor disc, which in turn interact with the magnetic field to generate braking. torque. Since the rotor disk is the main component of the magnetic circuit, it needs to have a certain magnetic permeability. Therefore, the existing rotor disk generally uses medium carbon steel as the material. However, this type of material has a large resistivity and produces small eddy currents. Therefore, the braking torque generated by the rotor disk is small, generally around 2000N·m, w...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H02K49/04
Inventor 彭涛李亮
Owner HUAZHONG UNIV OF SCI & TECH
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