Control method for improving electrical efficiency of electric locomotive
A technology of electric locomotives and control methods, applied to motor vehicles, control drives, electric vehicles, etc., can solve the problems of large power loss and low operating efficiency, and achieve the effect of high electrical efficiency and huge economic benefits
Active Publication Date: 2016-04-06
四川伟力得能源股份有限公司
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[0003] The purpose of the present invention is to provide a control method for improving the electrical efficiency of electric locomotives in order to solve the problems of low operating efficiency and large power loss of existing locomotives in view of the problems existing in the prior art
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[0029] The invention is mainly applied to the power transmission system of railway AC and DC electric locomotives. Real-time data analysis and calculation are carried out through the locomotive operating conditions, and the load rate level of each motor is automatically adjusted to make it work in the optimal area. On the premise of ensuring safe operation , so that the locomotive runs with the highest electrical efficiency and achieves the purpose of energy saving. In the domestic railway system, it is the first technology to study the load rate of the electric drive system to change the operating efficiency.
[0030] The control principle of the present invention is based on: electric locomotive transportation mainly depends on locomotive traction, and its traction mainly refers to the traction force of the wheel circumference. At present, railway electric locomotives mainly have 6 axles and 8 axles, that is, electric motors and transmission mechanisms convert electrical ener...
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The invention provides a control method for improving the electrical efficiency of an electric locomotive. The method includes the following steps that (1) actually measured locomotive wheel circumference traction force Fk actual measurement, the actually measured locomotive operation speed Vactual measurement, the actually measured primary side current Iprimary side actual measurement and the actually measured net voltage Unet actual measurement of the electric locomotive are obtained, and then the actually measured locomotive efficiency value etaactual measurement is calculated according to the formula shown in the specification; and (2) according to the actually measured locomotive efficiency value etaactual measurement, switching of traction motors is controlled, so that the locomotive speed is made to reach a set speed, and the locomotive efficiency value is made to reach a set efficiency value. According to the control method, the load rate level of each traction motor of the locomotive can be adjusted automatically, the traction motors are made to work in the optimal range, and on the premise of ensuring safe operation, the operation electrical efficiency of the locomotive is made the highest; from locomotive operation data actually collected by following the locomotive, it can be seen that after the method is used, the 80% energy-saving effect can be achieved, tens of millions of yuan of electricity expenditures can be saved for the railway administration every year.
Description
technical field [0001] The invention relates to the field of electric locomotive control, in particular to a control method for improving the electric efficiency of the electric locomotive. Background technique [0002] At present, the technical solutions for power saving of electric locomotives mainly include: 1. Use the braking feedback technology of AC electric locomotives to feed back the electric energy generated when the motor is in the power generation state to the grid. This technology has been widely used in AC electric locomotives; 2. Through The research on the running speed of the locomotive seeks the optimal control of the running gear of the locomotive so as to achieve the purpose of energy saving. The existing electric locomotives in my country mainly include Shaoshan, Dongfeng, Hexie and other models, and 6 or 8 traction motors are used to drive the wheelsets to move. The rated power is relatively large, such as: Harmony truck is 9600KW, passenger car is 7200...
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IPC IPC(8): B60L15/20B60L15/32
CPCB60L15/20B60L15/32B60L2200/26B60L2220/42B60L2240/12B60L2240/421Y02T10/72
Inventor 陈继军王治巍
Owner 四川伟力得能源股份有限公司