Electric locomotive braking system and control method thereof
A technology for braking systems and electric locomotives, applied in electric braking systems, electric vehicles, control devices, etc., can solve problems such as the inability to achieve stable regulation of armature current.
Active Publication Date: 2017-02-01
CHINA SHENHUA ENERGY CO LTD +2
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Problems solved by technology
[0004] Due to the difference between energy regenerative braking and resistance braking, the control method of adjusting the excitation alone cannot achieve stable adjustment of the armature current
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[0056] Specific embodiments of the present invention will be described in detail below in conjunction with the accompanying drawings. It should be understood that the specific embodiments described here are only used to illustrate and explain the present invention, and are not intended to limit the present invention.
[0057] An embodiment of the present invention provides an electric locomotive braking system, which is suitable for AC-DC drive electric locomotives powered by DC traction motors, such as figure 1 As shown, the system includes a traction motor 10 , a main transformer 20 , an energy feedback device 30 , an excitation adjustment system 40 and an armature adjustment system 50 . Wherein, the excitation adjustment system 40 is used to provide excitation to the traction motor 10 , and the armature adjustment system 50 is used to adjust the electric energy generated by the traction motor 10 . When the system is running, the traction motor 10 generates electricity unde...
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The invention provides an electric locomotive braking system and a control method thereof and relates to the field of electric locomotive transmission control. The problem that the electric current of an armature cannot be stably adjusted through a control method of independently regulating excitation due to the difference of energy feedback braking and resistance braking in the prior art is solved. The electric locomotive braking system comprises a traction motor (10), a main transformer (20), an energy feedback device (30), an excitation regulating system (40) and an armature regulating system (50). The excitation regulating system comprises an excitation rectifier bridge (41) and a rectifier control device (42). The rectifier control device is used for controlling the excitation rectifier bridge. The armature regulating system comprises an armature regulator (52), a current regulating device (51) and an armature current sensor (53). The armature current sensor is used for detecting the current of the armature. The armature regulator is used for controlling the current regulating device. The current regulating device is used for regulating the current of the armature. The embodiment of the invention is mainly applied to the electric locomotive braking process.
Description
technical field [0001] The invention relates to the field of electric locomotive transmission control, in particular to an electric locomotive braking system and a control method thereof. Background technique [0002] At present, the deceleration and braking of AC-DC electric locomotives generally adopts the resistance braking method, that is, the traction motor operates in a power state, the train power is generated by the wheel set rotating drive motor, and the electric energy is consumed in the form of heat through the resistance, thereby realizing the deceleration of the train. When the train is braking, it is required to maintain a stable braking current to avoid the impulse of the train, so it is necessary to adjust the excitation current I F , so that the traction motor maintains a stable generating voltage U, so that the armature current I M (I M =U / R) remained stable. [0003] With the development of technology, the resistance braking method is gradually replaced...
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Login to View More IPC IPC(8): B60L7/18
CPCB60L7/18B60L2240/429Y02T10/72
Inventor 贾晋中陈海滨周军张朝辉仵泽林刘炳新王志毅宁兴良任虎李鹏陈灿
Owner CHINA SHENHUA ENERGY CO LTD