Vehicle Wireless Power Transfer Control for Coupling Deviation Checks
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Existing wireless power transfer systems face issues with magnetic coupling deviations between power transmitters and receivers, leading to potential overheating and magnetic field leakage due to positional deviations.
Innovation Solution
A control device is implemented to detect coupling deviations by monitoring received power levels and performing a Magnetic Coupling Check to confirm the coupling coefficient, ensuring stable magnetic coupling and preventing overheating and leakage.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Use of energy by moving object
If wireless power transfer is performed by magnetic coupling between power transmitter and power receiver, then power transfer efficiency is improved, but magnetic coupling deviation occurs due to positional deviations causing overheating and magnetic field leakage
Solution Approach 1:
The control device continuously monitors the received power level and provides feedback to detect coupling deviations. When the received power falls below the target value by a predetermined amount, the system triggers a Magnetic Coupling Check to confirm the coupling coefficient, enabling real-time detection and correction of positional deviations to prevent overheating and magnetic field leakage while maintaining efficient power transfer
Solution Approach 2:
The system performs a Magnetic Coupling Check as a preliminary action before continuing power transfer when coupling deviation is detected. This preliminary verification of the coupling coefficient ensures that power transfer only continues when proper coupling is confirmed, preventing harmful effects before they occur
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
The solution effectively suppresses magnetic coupling deviations, maintaining efficient power transfer and preventing overheating and magnetic field leakage during wireless power transfer from a supply device to a vehicle.
Implementation Method 1
performs wireless power transfer by magnetic coupling between a supply device on a ground and a vehicle on traveling
Data Source
AI summary
A wireless power transfer system that performs wireless power transfer by magnetic coupling between a supply device on a ground and a vehicle on traveling, includes: a control device that controls wireless power transfer from a power transmitter of the supply device to a power receiver of the vehicle. Further, the control device determine that a coupling deviation has occurred in the magnetic coupling in a case where a state in which received power in the power receiver is smaller than a target value by a predetermined value or more has continued for a predetermined time period during the wireless power transfer from the supply device to the vehicle; and performs a state transition to Magnetic Coupling Check to confirm a coupling coefficient of the magnetic coupling in a case where the control device has determined that the coupling deviation has occurred.