A control method for compound power supply system of electric vehicle based on compound fuzzy control
A technology of electric vehicles and control methods, which is applied in the field of composite power supply systems of electric vehicles, can solve the problems of low precision and achieve the best power effect
Active Publication Date: 2021-03-23
HANGZHOU DIANZI UNIV
View PDF5 Cites 0 Cited by
- Summary
- Abstract
- Description
- Claims
- Application Information
AI Technical Summary
Problems solved by technology
At present, the battery-supercapacitor composite power system cannot guarantee to meet the energy and power requirements of electric vehicles to the greatest extent. The optimal design of the power distribution strategy between the two energy source devices is the key difficulty for scholars.
Common electric vehicle composite power system methods include genetic algorithm, particle swarm algorithm, simulated annealing algorithm, etc., but the power distribution of electric vehicle composite energy system is a multi-objective optimization problem, and these methods have technical problems of low accuracy
Method used
the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View moreImage
Smart Image Click on the blue labels to locate them in the text.
Smart ImageViewing Examples
Examples
Experimental program
Comparison scheme
Effect test
Embodiment Construction
[0018] Now in conjunction with accompanying drawing, the patent of the present invention is described in detail as follows:
[0019] as attached figure 1 As shown, the present invention provides a control method for a composite power supply system of an electric vehicle, specifically, the method includes a supercapacitor, a storage battery, a bidirectional DC / DC converter, an energy management fuzzy controller and a drive system. The implementation steps are as follows:
[0020] Step 1: Collect relevant data inside the car
[0021] as attached figure 1 As shown in Fig. 1, the state of charge of the storage battery and the state of charge of the supercapacitor inside the car, the speed of the electric car during operation, and the required power of the load connected to the drive system are obtained during the operation of the electric vehicle. The state of charge of the supercapacitor is dynamically controlled by the speed of the electric vehicle, and the state of charge of...
the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More PUM
Login to View More Abstract
The invention discloses a control method of a composite fuzzy controlled electric vehicle composite power supply system. According to the running speed of an electric vehicle in the running process, avehicle speed variable is introduced to correct the charge state of a super capacitor in real time so as to enable the super capacitor to be in a reasonable charge value range, and optimal power distribution is selected according to different operating conditions of the electric vehicle. According to the invention, the storage battery output power initial distribution coefficient of a main fuzzycontroller can be corrected in real time on the basis of different driving conditions of the electric vehicle according to a sub-fuzzy controller taking a state-of-charge target difference value [delta]SOCuc of the super capacitor and a state-of-charge SOCuc of the super capacitor as input quantities, and the optimal distribution effect of the power between the storage battery and the super capacitor is achieved.
Description
technical field [0001] The invention belongs to the field of composite power supply systems of electric vehicles, and in particular relates to a control method for composite power supply systems of electric vehicles with composite fuzzy control. Background technique [0002] In recent years, with the rapid development of the automobile industry, environmental issues and energy issues have become the focus of global attention. The research and application of electric vehicles are increasing day by day, and the composite power supply composed of high specific energy storage battery and high specific power supercapacitor has become one of the research hotspots. Among them, the storage battery is used to provide the high energy density required by the electric vehicle, and the supercapacitor provides the high power density required by the electric vehicle. At present, the battery-supercapacitor composite power system cannot guarantee that it can meet the energy and power requir...
Claims
the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More Application Information
Patent Timeline
Login to View More Patent Type & Authority Patents(China)
IPC IPC(8): B60L50/40B60L50/60B60L58/12
CPCB60L2240/54B60L50/40B60L50/60B60L58/12Y02T10/70
Inventor 刘栋良杨响攀崔丽丽张绪屈峰
Owner HANGZHOU DIANZI UNIV