Adaptive Inductive Power Transfer Circuit for Multi-Manufacturer Compatibility
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Solution Overview
Problem
Existing inductive power transfer systems face compatibility issues when using winding structures from different manufacturers, leading to reduced efficiency and operational incompatibility between primary and secondary units.
Innovation Solution
A circuit arrangement with adaptable subwinding structures that can operate in unipolar or multipolar modes, allowing cooperation with various winding structures from different manufacturers by adjusting impedance and mutual coupling, and using inverters and variable compensating arrangements to maintain optimal performance across different layouts.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a fixed topology and layout of winding structures is used, then the system achieves optimized performance for a specific manufacturer's design, but it becomes incompatible with winding structures from other manufacturers
Solution Approach 1:
The patent applies dynamics by making the circuit arrangement adaptable through switching between different operational modes (unipolar and multipolar). The system can dynamically reconfigure its impedance characteristics and field distribution patterns to match different winding structure types, thereby achieving compatibility across multiple manufacturers while maintaining optimized performance for each specific configuration
Solution Approach 2:
The patent utilizes parameter changes by varying the impedance of the circuit arrangement and switching between different topological configurations (one-phase vs. three-phase). These parameter adjustments allow the system to adapt to different winding structures from various manufacturers, resolving the contradiction between fixed optimization and universal compatibility
2Ease of manufacture
If the circuit arrangement uses a unipolar layout, then approximately 50% of field lines extend within the volume between primary and secondary winding structures, but the remaining field lines extend in free space reducing transfer efficiency
Solution Approach 1:
The patent applies asymmetry by introducing a multipolar layout option where the distribution of field lines is intentionally made asymmetric across different operational modes. In multipolar mode, field lines are concentrated more effectively within the volume between windings, reducing energy loss while maintaining the manufacturing simplicity of the unipolar configuration as an alternative mode
Solution Approach 2:
The circuit arrangement achieves multi-functionality by being capable of operating in both unipolar and multipolar modes. This allows the same physical winding structure to serve different functional requirements: unipolar mode for simpler configurations and multipolar mode for improved field concentration and reduced energy loss, depending on the specific application needs
3Productivity
If different manufacturers provide different topologies and layouts of winding structures, then each manufacturer can optimize for their specific design requirements, but interoperability between systems from different manufacturers is reduced
Solution Approach 1:
The circuit arrangement is designed to be dynamic and reconfigurable, allowing it to adapt its operational characteristics to match different manufacturer-specific winding structures. By switching between unipolar and multipolar modes and adjusting impedance parameters, the system maintains design optimization for each manufacturer's configuration while achieving universal interoperability
Solution Approach 2:
The circuit arrangement acts as an intermediary between the power source and various manufacturer-specific winding structures. It provides a standardized interface that can translate between different operational requirements, allowing optimized designs from different manufacturers to interoperate through the adaptive circuit arrangement
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
Enhances operational compatibility and efficiency in inductive power transfer by allowing the circuit arrangement to adapt to different winding structures, ensuring reliable power transfer regardless of manufacturer-specific designs.
Implementation Method 1
a receiving device adapted to receive an alternating electromagnetic field and to produce an alternating electric current by electromagnetic induction
Implementation Method 2
The primary winding structure(s) and the secondary winding structure(s) form a high frequency transformer to transfer electric energy to the vehicle
Data Source
AI summary
A circuit arrangement for a system for inductive power transfer and a method of operating a circuit arrangement, wherein the circuit arrangement (1 ) comprises at least one winding structure (1 ) with a first and at least one other subwinding structure (2a, 2b), wherein the subwinding structures (2a, 2b) are operatable in a first operational mode and a second operational mode, wherein an unipolar alternating electromagnetic field is providable in the first operational mode and a multipolar electromagnetic field is providable in the second operational mode.