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Optimized operation control method for range extender

An optimization method, the technology of the range extender, applied in the directions of transportation and packaging, road transportation emission reduction, data processing management, etc., can solve the lack of optimal control methods, only consider fuel economy, only consider single-objective optimization or dual-objective optimization And other issues

Inactive Publication Date: 2018-02-23
BEIJING INSTITUTE OF TECHNOLOGYGY
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Problems solved by technology

At present, the research on the operation optimization of range extenders generally only considers single-objective optimization or dual-objective optimization. For example, some only consider fuel economy, while others consider fuel economy and emissions. Optimal Control Method of Three Important Factors of Vibroacoustic Characteristics

Method used

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  • Optimized operation control method for range extender
  • Optimized operation control method for range extender
  • Optimized operation control method for range extender

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Embodiment Construction

[0020] 1. For a naturally aspirated gasoline engine with a displacement of 1.2L and a peak power of 45kw and a permanent magnet synchronous generator with a peak torque of 120Nm and a rated power of 30kW, the range extension is measured at different speeds and torque points The fuel consumption rate, HC emission, CO emission, NO emission, body vibration intensity and radiated noise sound pressure level of the engine, and use the measured data to draw the body vibration intensity MAP (such as image 3 (a)) and radiated noise sound pressure level MAP (such as image 3 (b) shown).

[0021] 2. According to the experimental data, the bicubic interpolation method is used to obtain the speed-torque-fuel consumption characteristics f of the range extender respectively FC (n,T) (eg Figure 4 (a)), speed-torque-HC emission characteristics f HC (n,T) (eg Figure 4 (b)), speed-torque-CO emission characteristics f CO (n,T) (eg Figure 4 (c)), speed-torque-NOx emission characteristic ...

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Abstract

The invention discloses an optimized operation control method for a range extender, and belongs to the technical field of new energy automobile power. The method is suitable for pure electric automobiles with range extenders as second power sources. According to the method, the influences of oil consumption, emission and vibration noise of the range extender on actual operation conditions of the range extender are comprehensively considered, and multi-objective functions between the range extender and speed-torque are fitted respectively through an interpolation method and a nonlinear regression method; multi-objective function models are optimally solved through a multi-objective particle swarm optimization algorithm and an adaptive weight allocation method in combination with speed and torque constraints of the range extender, and the optimal working points of the range extender are obtained. By means of the method, target weight allocation can be regulated in real time according tourban emission regulations, road conditions and economic needs to obtain the optimal working points of the range extender, and a range extender power system can work in an economical area, a green area, a comfortable area and a comprehensive area.

Description

1. Technical field [0001] The invention belongs to the technical field of new energy vehicles, and in particular relates to a method for controlling optimal operation of a range extender for electric vehicles. 2. Technical background [0002] Facing the increasingly severe climate and energy situation, electric vehicles have attracted more and more attention from governments due to their great advantages in energy saving and environmental protection. However, the current power batteries have problems such as high price, low energy density, and long charging time, which limit the large-scale promotion of electric vehicles. Under the background that the power battery cannot obtain a large performance improvement in the short term, various forms of hybrid vehicles have emerged as the times require. Among them, the extended range electric vehicle (EREV), as a transitional model of pure electric vehicles, has received widespread attention due to its advantages of high efficiency...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B60W20/11B60W30/188
CPCB60W20/11B60W30/1882B60W2510/0638B60W2510/0657Y02T10/84
Inventor 杨业张幽彤李涛
Owner BEIJING INSTITUTE OF TECHNOLOGYGY
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