Method for controlling double-shaft parallel hybrid power urban bus

An urban bus, hybrid technology, applied in the field of energy control strategies for dual-axle parallel hybrid buses

Inactive Publication Date: 2015-12-09
DALIAN UNIV OF TECH
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  • Abstract
  • Description
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  • Application Information

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Problems solved by technology

[0004] In order to overcome some problems existing in the existing hybrid electric bus, the present invention proposes a double-axle motor that does not need to know the entire driving

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  • Method for controlling double-shaft parallel hybrid power urban bus
  • Method for controlling double-shaft parallel hybrid power urban bus
  • Method for controlling double-shaft parallel hybrid power urban bus

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Embodiment Construction

[0101] The present invention will be further described below in conjunction with the accompanying drawings.

[0102] figure 1 Shown is a schematic diagram of the vehicle model module of a two-axis parallel hybrid electric bus, and its power transmission system is as follows: figure 2As shown, the vehicle described is a two-axle parallel hybrid city bus, which is jointly driven by two separate drive systems of an engine and an electric motor. The electric motor has a simple structure and is characterized by a high speed limit. There is only one electric motor in the transmission system, which can be used as a motor to drive the vehicle powered by the battery, or as a generator to charge the battery. The engine is a diesel engine with high power and large maximum output torque, which can provide enough torque for urban buses. Its power transmission system also includes battery, torque coupling, transmission, final drive and wheels, etc. The engine is connected to the torqu...

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Abstract

The invention discloses a method for controlling a double-shaft parallel hybrid power urban bus. The method comprises the following steps that a power transmission system model is set up; linear fitting is carried out; the reachable area of a state of charge (SOC) is pre-determined; a prediction control model is set up; a hybrid integral linear programming problem is solved. According to division of the work modes and the dynamic characteristic of hybrid logic, the work modes of the hybrid power bus can be freely switched according to running conditions and the behavior of a driver, and therefore torque is distributed to an engine and a motor through an optimal method. The problem that due to a control method based on rules, torque distribution cannot be automatically optimized according to the running conditions is effectively solved. The defect that only the current moment can be considered in instantaneous optimization is effectively overcome through the prediction model. When the range of visibility is predicted, duration enabling the relative error of the prediction result and an ideal value to be small can be found according to experiments, and the strict requirement for the whole running conditions in global optimization is effectively eliminated.

Description

technical field [0001] The invention relates to an energy control strategy of a dual-axle parallel hybrid electric bus, in particular to a control method for a dual-axle parallel hybrid electric city bus. Background technique [0002] At present, the development of new energy vehicles with the goal of energy saving and environmental protection has become the consensus of all countries in the world. Hybrid vehicles are the first mass-produced new energy vehicles. Existing hybrid electric vehicles generally use the traditional internal combustion engine as the main power source, and the battery motor system as the auxiliary power source. The engine works in a high-efficiency area through an optimized control system, and regenerative braking energy recovery is realized, which is different from traditional liquid fuels. Compared with automobiles, it greatly improves fuel economy and reduces pollutant emissions. Therefore, under the current conditions, hybrid vehicles have beco...

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Application Information

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IPC IPC(8): B60W20/00B60W50/00
CPCB60W20/10B60W50/0097B60W2050/0013
Inventor 连静李琳辉杨帆袁鲁山周雅夫范悟明伦智梅
Owner DALIAN UNIV OF TECH
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