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Braking system of high-speed rail EMU

A technology for braking systems and EMUs, applied in electric braking systems, brakes, regenerative braking, etc., can solve problems such as large motor braking torque fluctuations and difficult phase commutation of inverter feedback devices, and achieve optimal braking Control, realize electric energy recycling, increase comfort effect

Active Publication Date: 2020-07-28
NANTONG SHUGUANG ELECTROMECHINCAL ENG
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, when the train is at low speed, due to the decrease of the electromotive force of the motor, the commutation of the inverter feedback device is difficult, and the braking torque of the motor fluctuates greatly. air brake

Method used

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  • Braking system of high-speed rail EMU
  • Braking system of high-speed rail EMU

Examples

Experimental program
Comparison scheme
Effect test

Embodiment

[0026] A high-speed rail EMU brake system includes a brake controller, a composite electric brake control execution device and an air brake control execution device, such as figure 1 .

[0027] The brake controller is installed in each motor car, and receives the brake level command, weather information, train load information and speed information from the driver, and calculates and distributes the braking force; specifically: according to the pre-stored deceleration- The speed curve and the adhesion coefficient-speed curve are determined by experiments, calculate the required braking force and maximum adhesion force, and ensure that the calculated braking force is less than the maximum adhesion force. The electric braking force is allocated according to the principle of electric braking priority. When the braking force is insufficient, the remaining calculated braking force is allocated to the air brake, and the air braking force is allocated to the braking device of the trailer...

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Abstract

The invention provides a braking system for a high-speed railway train set. The braking system comprises a braking controller, a composite electric braking control executing device and an air brakingcontrol executing device. A braking controller receives a braking-level instruction, weather information, train load information and train speed information which are sent out by a driver, and brakingforce calculation and distribution are conducted; and the composite electric braking control executing device selects and controls the braking modes including regenerative braking and energy consumption braking, and electric braking force is generated through an inversion device with the braking function and a motor. According to the braking system for the high-speed railway train set, braking control of the high-speed railway train set is optimized, the positive effects in multiple aspects that electric energy is recycled, comfort during train braking is improved, the braking time and the braking distance are reduced to the largest extent so as to facilitate maintenance of a foundation braking device are achieved, and the potential application and popularization value is achieved.

Description

Technical field [0001] The invention relates to a braking system for a high-speed rail EMU. Background technique [0002] The high-speed rail EMU uses traction motors as power, and its braking system uses a composite brake composed of electric brakes and air brakes. The brake control unit calculates and generates braking force according to the braking level, speed information and load information, and distributes the braking force according to the principle of electric brake priority of the motor to reduce the wear of the brake discs and brake pads in the braking basic device. [0003] Usually, electric brakes and air brakes are mainly used as supplements for medium and high speeds; when the speed is lower than 30km / h, the electric brakes of the motors are cut off and air brakes are used. During the entire braking process, especially during the switching process between electric brake and air brake at low speed, the total braking force should be kept as constant as possible, and t...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B60T13/24B60T13/58B60T13/66B60L7/26
CPCB60L7/26B60T13/24B60T13/58B60T13/665B60T2270/60
Inventor 赵桂锋崔有祥闵春华郭颖颜开红赵建军邓爱玲刘彬王嫣杨海龙张荣
Owner NANTONG SHUGUANG ELECTROMECHINCAL ENG
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