Electric Vehicle Power Transfer Method Selection for Demand Response
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Solution Overview
Problem
In virtual power plants, vehicles participating in demand response need to select an appropriate method for power transfer between contact and non-contact methods while considering facility availability and travel plans to maximize compensation and minimize penalties.
Innovation Solution
A vehicle equipped with a power accumulation device and multiple power transfer methods, including contact and non-contact transfer, uses a control device to preferentially select the most efficient method for power transfer, reserving facilities and adjusting based on reservation status and photovoltaic power generation to optimize participation in demand response.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Loss of energy
If contact power transfer method is selected, then power transfer efficiency is improved, but facility availability and operational flexibility deteriorate
Solution Approach 1:
The system dynamically selects between contact and non-contact power transfer methods based on real-time facility availability and vehicle status. The control device switches power transfer modes adaptively, using contact method when facilities are available for high efficiency, and non-contact method when facilities are unavailable or during travel, thus resolving the contradiction between efficiency and flexibility
Solution Approach 2:
The vehicle is equipped with both contact power transfer capability (via power cable connection) and non-contact power transfer capability (via electromagnetic coupling). This multi-functionality allows the system to adapt to different facility conditions, maintaining operational versatility while optimizing for efficiency when possible
2Adaptability or versatility
If non-contact power transfer is used while traveling, then operational flexibility is improved, but power transfer efficiency deteriorates
Solution Approach 1:
The system dynamically adjusts power transfer method selection based on vehicle state (stopped or traveling) and facility availability. When the vehicle is traveling, non-contact method is automatically selected to maintain operational flexibility, while when stopped and facilities are available, contact method is preferred for higher efficiency
Solution Approach 2:
The control device changes operational parameters (power transfer method) based on vehicle state parameters. When vehicle speed indicates traveling state, the system switches to non-contact power transfer, accepting lower efficiency in exchange for maintaining operational flexibility during motion
3Productivity
If demand response participation is increased, then power supply and demand balance adjustment is improved, but complexity of method selection deteriorates
Solution Approach 1:
The vehicle's control device automatically performs method selection without external intervention. The system self-manages the complexity of choosing between contact and non-contact power transfer by incorporating decision logic that considers facility availability, vehicle state, and DR requirements, thus increasing DR participation while keeping the selection process automated and manageable
4Reliability
If contact power transfer facility is reserved in advance, then power transfer reliability is improved, but loss of time for reservation and scheduling deteriorates
Solution Approach 1:
The system performs preliminary reservation of contact power transfer facilities when DR participation is planned. By reserving facilities in advance, the system ensures reliable power transfer capability for upcoming DR events, accepting the time investment for reservation as necessary for achieving high reliability and avoiding last-minute uncertainties
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
This approach allows vehicles to maximize compensation by selecting high-efficiency power transfer methods, increase participation in demand response, and avoid penalties by strategically choosing between contact and non-contact power transfer methods.
Implementation Method 1
a battery electric vehicle capable of transferring power (non-contact power transfer) with power equipment in a non-contact manner
Data Source
AI summary
A vehicle is configured to participate in demand response used for adjusting a power supply and demand balance in a power system. The vehicle includes a power accumulation device, a power transfer device that enables power transfer in one of a first, a second, and a third method, and a control device that controls the power transfer device. The first method enables power to be transferred through a power cable between the power accumulation device and an outside of the vehicle. The second method enables power to be transferred in a non-contact manner while the vehicle is stopped. The third method enables power to be transferred in the non-contact manner while the vehicle is traveling. When the vehicle participates in the demand response, the control device selects a method in a preferential order of the first, the second, and the third method and execute the power transfer.