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Dynamic torque cooperative control method of planetary series-parallel hybrid power system

A hybrid power system and dynamic torque technology, which is applied to the arrangement of multiple different prime movers and power plants of hybrid vehicles and general power plants, can solve problems such as difficulty in ensuring real-time control, and achieve consistent control effects. Robust, guaranteed real-time effect

Inactive Publication Date: 2018-01-05
JILIN UNIV
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Problems solved by technology

However, model-based predictive control requires high model accuracy, involves online rolling optimization, requires high controller computing power, and is difficult to guarantee real-time control under current technical conditions

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  • Dynamic torque cooperative control method of planetary series-parallel hybrid power system
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  • Dynamic torque cooperative control method of planetary series-parallel hybrid power system

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Embodiment Construction

[0043] The technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention.

[0044] refer to figure 1 , is a simplified structural schematic diagram of the planetary hybrid power system described in the present invention, and only schematically shows the components related to the present invention.

[0045] Such as figure 1 The planetary hybrid power system shown includes an engine, a speed-adjusting motor, a torque-adjusting motor, a supercapacitor, a planetary row, a final reducer and wheels. Among them, the engine is connected to the planetary row to realize the power splitting effect, a small part of the mechanical power is converted into electric power through the speed regulating motor, most of the mechanical power is transmitted to the output shaft, the torque regulating motor is connected to the output shaft, and the two powers are input to the fi...

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Abstract

The invention discloses a dynamic torque cooperative control method of a planetary series-parallel hybrid power system. The dynamic torque cooperative control method comprises two development parts ofan offline calculation method based on model prediction and an online cooperative control method. Firstly, a dynamic model of the planetary series-parallel hybrid power system is built, and an outputtorque observation model and a shock extent observation model of the planetary series-parallel hybrid power system are deduced based on the dynamic model of system; then, the output torque observation model and the shock extent observation model of the system are discretized, and thus a prediction model of the corresponding observed quantity is obtained; offline dynamic control models of a speed-regulating motor and a torque-regulating motor are deduced based on the prediction model; and offline simulating calculation is carried out, control rules of the two motors in the mode switching process are extracted based on the offline calculation result, the online torque cooperating method is obtained, and the online torque is cooperatively controlled.

Description

technical field [0001] The invention relates to a dynamic torque coordination control method of a planetary hybrid power system, which belongs to the control field of hybrid electric vehicles. Background technique [0002] Faced with the current situation of energy shortage and increasingly serious environmental pollution, as an important way to save energy and reduce emissions, the hybridization of automobiles has attracted more and more attention. Among various hybrid system configurations, the planetary hybrid system has two motors and a set of planetary gear coupling mechanism, which can realize the decoupling of the engine speed by using the speed regulating motor, and realize the torque decoupling of the engine by using the torque regulating motor. Coupling, that is, realizes double decoupling of the speed and torque of the engine, which is easy to realize the optimal control of the engine, and has the most prominent energy-saving potential. However, during the mode s...

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Application Information

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IPC IPC(8): B60W20/11B60W20/20B60W10/06B60W10/08B60W10/115B60W30/182B60K6/44
CPCY02T10/62
Inventor 曾小华王振伟宋大凤杨南南王越李广含黄海瑞崔皓勇董兵兵孙可华
Owner JILIN UNIV
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