Motor train set motor broken shaft monitoring method and device
A technology for EMUs and broken shafts, which is applied in the field of monitoring and can solve problems such as in-house maintenance from maintenance personnel.
Active Publication Date: 2019-12-20
CHINA ACADEMY OF RAILWAY SCI CORP LTD +2
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Problems solved by technology
[0004] In the existing technology, in the EMUs in operation, there are few reports on the function of online real-time monitoring of the broken shaft state of the motor, and the monitoring of whether the motor shaft is broken is more from the maintenance personnel's maintenance in the warehouse
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[0080] The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only some, not all, embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the protection scope of the present invention.
[0081] The invention provides a method for monitoring broken shafts of EMU motors, such as figure 1 As shown, the method includes:
[0082] Step S101, collecting the three-phase current signal of the traction converter of the motor of the monitored EMU, the speed signals of each motor, and the torque preset value of the EMU;
[0083] Step S102, determining the estimated torque value of each motor according to the motor parameters of the monitored motor, the o...
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The invention provides a motor train set motor broken shaft monitoring method and device, computer equipment and readable storage medium. The motor train set motor broken shaft monitoring method comprises the steps of collecting a three-phase current signal of a traction converter of a monitored motor train set motor, each motor rotation speed signal and a motor train set torque preset value; according to a motor parameter of the monitored motor, an output frequency of the traction converter, the collected three-phase current signal and each motor rotation speed signal, determining an estimated torque value of each motor; according to the rotation speed signal and the estimated torque value of each motor and the motor train set torque preset value, determining a status word of each motor;and according to the status word of each motor and a pre-obtained broken shaft state comparison value, determining a broken shaft state of each motor. According to the motor train set motor broken shaft monitoring method, by directly extracting speed and current signals of a traction motor to monitor the broken shaft state of the motor, the system cost is saved; the motor with the broken shaft fault can be rapidly positioned while the broken shaft fault is accurately judged; the complicated manual troubleshooting process is omitted; and the fault processing efficiency is enhanced.
Description
technical field [0001] The invention relates to a monitoring technology, in particular to a method and a device for monitoring broken shafts of motor trains. Background technique [0002] The control technology of the EMU traction motor is one of the core technologies of the vehicle system, and its control performance plays a decisive role in the safe and stable operation of the EMU. In vehicle control mode, the traction converter simultaneously drives four parallel motors with the same parameters for traction control. Under normal working conditions, the four motors maintain similar working conditions, and at the same time exert almost the same traction force to ensure the normal operation of the EMU system. [0003] In the current EMU operation process, the broken shaft of the traction motor is an occasional inertial mass problem, which generally occurs during the operation of the EMU. Usually, the reasons for the broken shaft of the motor include: the load carried by th...
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IPC IPC(8): B61L15/00B60L3/00
CPCB61L15/0081B60L3/0061
Inventor 周义杰蒋威杨宁赵震赵雷廷殷振环王霖谢冰若白龙邱腾飞
Owner CHINA ACADEMY OF RAILWAY SCI CORP LTD