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Rail transit motor control system and method

A motor control and rail transit technology, applied in the field of rail transit, can solve the problems of inability to adjust magnetic field, insufficient output voltage of inverter, low motor running speed, etc., and achieve the effect of improving reliability and stability

Active Publication Date: 2019-04-23
CSR ZHUZHOU ELECTRIC LOCOMOTIVE RES INST
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, in the battery traction mode, the low power supply voltage leads to insufficient output voltage of the inverter, and at this time the motor runs at a speed far below the rated speed, so traditional field weakening regulation cannot be performed.

Method used

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  • Rail transit motor control system and method
  • Rail transit motor control system and method
  • Rail transit motor control system and method

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Embodiment Construction

[0043] The implementation of the present invention will be described in detail below in conjunction with the accompanying drawings and examples, so that implementers of the present invention can fully understand how the present invention uses technical means to solve technical problems, and achieve the realization process of technical effects and according to the above-mentioned realization process The present invention is implemented concretely. It should be noted that, as long as there is no conflict, each embodiment and each feature in each embodiment of the present invention can be combined with each other, and the formed technical solutions are all within the protection scope of the present invention.

[0044] With the rapid development of urban rail transit, the safety and reliability of trains are also improving simultaneously. While ensuring the stability of train operation, it is still necessary to take some emergency measures to face emergencies. When the train's po...

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Abstract

The invention discloses a rail transit motor control system and method. The system includes: a flux linkage forced modulation module configured to adjust a motor flux linkage according to the real-time modulation output voltage such that the motor is forced into the weak magnetic state in the low-voltage traction state. According to the system of the present invention, the weak magnetic adjustmentof the motor can be performed in the low voltage state, thereby achieving traction control of the motor; and compared with the prior art, the system greatly improves the reliability and stability ofthe traction control of the motor.

Description

technical field [0001] The invention relates to the field of rail transportation, in particular to a rail transportation motor control system and a control method. Background technique [0002] With the rapid development of urban rail transit, the safety and reliability of trains are also improving simultaneously. While ensuring the stability of train operation, it is still necessary to take some emergency measures to face emergencies. When the train's power supply device (pantograph, collector shoe) or power supply line is abnormal and the train cannot be powered normally, other measures need to be taken to allow the train to return to the warehouse for maintenance or run to the normal section. At present, there is a measure to use the on-board battery equipment to supply power to the train, so as to realize the traction of the train by the train. [0003] There are two main power supply voltage levels for traditional urban rail projects: 1000V-1850V and 500V-900V. Only w...

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H02P21/00H02P21/26
CPCH02P21/0089H02P21/26
Inventor 梅文庆贾岩刘勇甘韦韦付翔宇胡亮
Owner CSR ZHUZHOU ELECTRIC LOCOMOTIVE RES INST