Vehicle Power Supply Controller Boost Mode Motor Position Correction
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Solution Overview
Problem
Existing power supply devices for vehicles fail to accurately correct the deviation between the rotation position detected by a rotation angle sensor and the actual rotation position of a motor, especially when intermittent boost control is used, leading to inefficiencies in electric power management.
Innovation Solution
A power supply device with a controller that operates a boost converter in continuous and intermittent modes, avoiding intermittent boost mode during reference point adjustment control to ensure accurate motor position correction, thereby maintaining alignment between detected and actual motor positions.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Loss of energy
If intermittent boost control is used to reduce electric power loss, then energy efficiency is improved, but the accuracy of motor rotation position correction deteriorates
Solution Approach 1:
The system dynamically switches between continuous boost mode and intermittent boost mode based on operational conditions. The controller determines whether to use intermittent boost control by checking if correction values for the rotation angle sensor are being updated, thereby adapting the boost control strategy to the current operational state to maintain both energy efficiency and correction accuracy
Solution Approach 2:
The system changes the operational parameters of the boost converter based on the correction status. When correction values are being updated, the system switches from intermittent boost mode to continuous boost mode, thereby changing the duty cycle and operational characteristics of the boost converter to ensure stable voltage supply during critical correction periods
2Use of energy by moving object
If the boost converter is intermittently operated to reduce power consumption, then energy efficiency is improved, but voltage control stability deteriorates
Solution Approach 1:
The system dynamically adjusts the boost converter operation mode based on real-time conditions. The controller monitors whether correction values are being updated and switches between continuous and intermittent boost modes accordingly, thereby maintaining voltage stability during correction operations while achieving energy savings during normal operation
Solution Approach 2:
The system uses feedback from the correction value update status to control the boost converter operation. The controller determines the appropriate boost mode based on whether correction values are being updated, creating a closed-loop control system that adjusts power supply stability based on the current operational requirements
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 corrects the deviation between detected and actual motor positions, ensuring precise motor control and reducing electric power loss by optimizing boost control modes.
Implementation Method 1
a boost converter, configured to boost voltage of the electric power storage device and configured to supply the boosted voltage to an electric load of the vehicle
Data Source
AI summary
Provided are a power supply device for a vehicle provided with a battery, a converter, and a controller, and a method for controlling the same. The controller controls the converter in a continuous boost mode in which the converter is continuously operated and an intermittent boost mode in which the converter is intermittently operated. The controller does not control the converter in the intermittent boost mode when a control that adjusts a reference point of a resolver of a motor generator is underway.