The invention relates to the technical field of electric driving system energy-saving control, and discloses a multi-motor driving system torque optimal distribution method and system, and the method comprises the steps: building a single power unit power loss model of a multi-motor driving system; constructing a fitting straight line segment; constructing a torque-current mapping relation curve; a train speed prediction model, a multi-motor driving system power unit motor rotating speed prediction model, a multi-motor driving system total torque reference value prediction model and a multi-motor driving system power unit power loss prediction model are constructed; establishing a multi-motor driving system energy efficiency evaluation function, a multi-motor driving system stability evaluation function, a multi-motor driving system total torque following evaluation function and a system optimization objective function; designing a learning rate of a control vector; and updating the control vector according to the learning rate, and obtaining an optimized torque distribution coefficient and an optimized torque reference value distributed by each power unit. Therefore, the torque optimization distribution of the multi-motor driving system is realized, and the energy utilization efficiency of the system is improved.
本发明涉及电驱动系统节能控制技术领域,公开了一种多电机驱动系统转矩优化分配方法及系统,通过建立多电机驱动系统单个动力单元功率损耗模型;构建拟合直线段;构建转矩‑电流映射关系曲线;构建列车速度、多电机驱动系统动力单元电机转速、多电机驱动系统总转矩参考值预测模型和多电机驱动系统动力单元功率损耗预测模型;建立多电机驱动系统能效评价函数、多电机驱动系统稳定性评价函数、多电机驱动系统总转矩跟随评价函数和系统优化目标函数;设计控制向量的学习率;根据学习率更新控制向量,获得优化转矩分配系数和各个动力单元所分配的优化转矩参考值。从而实现多电机驱动系统转矩优化分配,提升系统能量利用效率。
Multi-motor driving system torque optimal distribution method and system
一种多电机驱动系统转矩优化分配方法及系统
25.04.2025
Patent
Elektronische Ressource
Chinesisch
IPC: | H02P CONTROL OR REGULATION OF ELECTRIC MOTORS, ELECTRIC GENERATORS OR DYNAMO-ELECTRIC CONVERTERS , Steuern oder Regeln von elektrischen Motoren, elektrischen Generatoren, dynamoelektrischen Umformern / B60L PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES , Antrieb von elektrisch angetriebenen Fahrzeugen |
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