Control method and control device for a hybrid electric locomotive
A technology of hybrid power and control method, which is applied in the field of hybrid locomotive control and hybrid locomotive control devices, and can solve the problems of diesel engine energy waste, power battery pack overcurrent damage, charging current imbalance, etc.
Active Publication Date: 2021-10-29
ZHUZHOU CSR TIMES ELECTRIC CO LTD
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Problems solved by technology
When it is necessary to charge the power battery packs of multiple branches at the same time, the existing charging control method will be affected by the differences in the characteristics of the power batteries on each branch, resulting in an unbalanced charging current in each branch, which will affect the output energy of the diesel engine. There is a large waste, and it is easy to cause the problem of overcurrent damage to the power battery pack
[0004] In order to overcome the above-mentioned defects in the prior art, there is an urgent need in this field for a control technology for hybrid electric locomotives, which is used to balance the charging current of each charging branch, to improve the energy utilization efficiency of hybrid electric locomotives, and to prevent power battery packs from Overcurrent damage
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[0039] The implementation of the present invention will be illustrated by specific specific examples below, and those skilled in the art can easily understand other advantages and effects of the present invention from the content disclosed in this specification. Although the description of the invention will be presented in conjunction with a preferred embodiment, it is not intended that the features of the invention be limited to that embodiment only. On the contrary, the purpose of introducing the invention in conjunction with the embodiments is to cover other options or modifications that may be extended based on the claims of the present invention. The following description contains numerous specific details in order to provide a thorough understanding of the present invention. The invention may also be practiced without these details. Also, some specific details will be omitted from the description in order to avoid obscuring or obscuring the gist of the present inventio...
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The present invention relates to a control method and device of a hybrid locomotive, and a computer-readable storage medium. The control method includes the steps of: calculating the total current of the intermediate circuit according to the power target value of the main generator and the intermediate voltage of the intermediate circuit; calculating the current distribution coefficient of each charging branch according to the state of charge of a plurality of power battery modules, Among them, each power battery module corresponds to a charging branch; calculate the first charging current target value of each charging branch according to the total current and the current distribution coefficient; compare the first charging current target value with the second charging current of the corresponding power battery module The current target value is compared to determine the smaller value of the two, wherein the second charging current target value is provided by the battery management system of the corresponding power battery module; and the smaller value of each charging branch is the first charging current If the target value is the target value, the smaller value of each charging branch is used as the target value of the charging current control to charge each corresponding power battery module.
Description
technical field [0001] The invention relates to the field of locomotive control, in particular to a control method for a hybrid locomotive and a control device for a hybrid locomotive. Background technique [0002] Compared with traditional diesel locomotives, hybrid locomotives with diesel generators and power batteries have the advantages of energy saving and environmental protection, and are especially suitable for use as dispatch locomotives in railway stations, or as working locomotives in steel, coal, ports and other industrial and mining enterprises. Take on the task of railway transportation. [0003] The charging control method of the existing hybrid electric locomotive is only suitable for charging and controlling the power battery pack of a single branch. When it is necessary to charge the power battery packs of multiple branches at the same time, the existing charging control method will be affected by the differences in the characteristics of the power batterie...
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IPC IPC(8): B60W20/15B60W20/13
CPCB60W2510/244B60W20/13B60W20/15
Inventor 路向阳刘晨勇吴柏华张东方何良鲍睿郜永涛彭会文
Owner ZHUZHOU CSR TIMES ELECTRIC CO LTD