A Fuzzy Logic Algorithm Based Energy Management Method for Hybrid Power System

A fuzzy logic algorithm and hybrid power system technology, applied in the direction of hybrid vehicles, motor vehicles, other vehicle parameters, etc., can solve problems that cannot be applied in practice, large amount of calculation, complex optimization process, etc., to avoid large current Charging and discharging, low hardware requirements, good real-time effect

Active Publication Date: 2018-03-13
SAIC VOLKSWAGEN AUTOMOTIVE CO LTD
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Problems solved by technology

Although the optimization algorithm of the objective function model of the adaptive control strategy is different, because the adaptive control needs to collect a large amount of power system operating data in real time, calculate energy consumption, and predict future working conditions, the optimization process is complicated and the calculation amount is large, resulting in its Cannot be applied in practice

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  • A Fuzzy Logic Algorithm Based Energy Management Method for Hybrid Power System
  • A Fuzzy Logic Algorithm Based Energy Management Method for Hybrid Power System
  • A Fuzzy Logic Algorithm Based Energy Management Method for Hybrid Power System

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Embodiment Construction

[0040] After reading the detailed description of the embodiments of the present disclosure in conjunction with the following drawings, the above-mentioned features and advantages of the present invention can be better understood, but the present invention is not limited in any form. In the drawings, components are not necessarily drawn to scale, and components with similar related properties or characteristics may have the same or similar reference numerals. It should be noted that those skilled in the art can make several modifications and improvements without departing from the concept of the present invention, all of which belong to the protection scope of the present invention.

[0041] The overall concept of the hybrid system energy management method of the present invention is described first, which is based on a fuzzy logic algorithm, which simplifies the energy management strategy of the hybrid system into a set of multi-input, single-output capacity management rules, u...

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Abstract

The invention discloses a hybrid power system energy management method based on a fuzzy logic algorithm. The vehicle power need and the power distribution combination are automatically calculated in real time, and the fuel economy of the vehicle is improved on the premise of guaranteeing the dynamic property and meeting different user needs. The technical scheme comprises the following steps: performing system self-check; sending an access signal to an energy source controller and a drive motor controller by a vehicle control unit, and obtaining signal data; judging whether the signal data is complete; calculating the vehicle need power and the vehicle power system accessory power by the vehicle control unit according to the signal data, and calculating each energy source output power in real time through a fuzzy logic algorithm; adjusting and correcting the energy source output power calculated in real time by the fuzzy logic algorithm to obtain a power distribution combination; sending the output power distribution result to each energy source controller through a CAN bus based on the power distribution combination by the vehicle control unit to finish real-time adjustment of each energy source output power of a power system by the vehicle control unit.

Description

technical field [0001] The invention relates to the technical field of hybrid electric vehicle control, in particular to an energy management method of a hybrid electric system based on a fuzzy logic algorithm. Background technique [0002] A range-extended electric vehicle is a special hybrid electric vehicle designed to solve the problem of short mileage of pure electric vehicles. On the basis of pure electric vehicles, a range extender is added to increase the mileage of electric vehicles. The power battery is its main energy source, and the range extender system is its backup energy source. When the power of the power battery drops to a certain level, the range extender starts to work to charge the power battery or directly drive the vehicle to increase the mileage of the vehicle. Under the coordinated control of the vehicle energy management system, the dual-energy system cooperates with other components to perform multiple optimized combinations to form different power...

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B60W20/10B60W10/06B60W10/08
CPCB60W10/06B60W10/08B60W20/10B60W2510/244B60W2530/209B60W2710/0677B60W2710/086Y02T10/62
Inventor 刘旭鹏李科迪童珎何荣国
Owner SAIC VOLKSWAGEN AUTOMOTIVE CO LTD
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