Controlled Rectifier for Wireless Power Efficiency
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Solution Overview
Problem
Conventional wireless power receiving units face efficiency challenges due to the need for multiple stages in converter structures, which increase component count and reduce efficiency.
Innovation Solution
A wireless power receiving unit that employs a rectifier with a diode bridge and a switch, controlled by a controller to operate as either a full-wave or half-wave rectifier, eliminating the need for a separate converter and incorporating a bypass capacitor to manage current flow.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If a multi-stage converter structure is used to convert AC signal to precise DC voltage, then the output voltage precision is improved, but the efficiency deteriorates due to multiple conversion stages
Solution Approach 1:
The invention extracts and eliminates the intermediate converter stage from the traditional two-stage structure (rectifier + converter). By using a controlled rectifier with pulse-width modulation, the patent directly generates precise DC voltage from AC input without requiring a separate converter, thereby removing the source of efficiency loss while maintaining voltage precision.
Solution Approach 2:
The invention merges the functions of the rectifier and converter into a single integrated controlled rectifier unit. The rectifier circuit incorporates control mechanisms that enable it to perform both rectification and voltage regulation functions simultaneously, eliminating the need for separate converter stages and reducing overall system losses.
2Stability of the object's composition
If a two-stage structure (rectifier + converter) is used to ensure precise DC output, then the output voltage stability is improved, but the device complexity increases
Solution Approach 1:
The invention removes the separate converter component from the system architecture. By implementing control logic directly within the rectifier stage, the patent eliminates the need for additional voltage conversion hardware, thereby reducing device complexity while maintaining output stability through electronic control mechanisms.
Solution Approach 2:
The controlled rectifier is designed to perform multiple functions: rectification, voltage regulation, and output stabilization. This multi-functional approach replaces the need for separate dedicated components for each function, simplifying the overall device structure while maintaining comprehensive control over output voltage stability.
3Adaptability or versatility
If multiple components (rectifier and converter) are used to achieve precise power conversion, then the functional capability is improved, but the number of components increases
Solution Approach 1:
The invention combines the rectifier and converter functions into a single integrated controlled rectifier assembly. This merger reduces the total number of discrete components in the system while preserving the full power conversion capability through coordinated control of the rectifier switches and circuit elements.
Solution Approach 2:
The controlled rectifier unit is designed as a multi-functional component that performs rectification, voltage regulation, and adaptive control. This universal component replaces multiple specialized components, reducing part count while maintaining versatile power conversion capabilities across different operating conditions.
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 configuration allows for self-regulation of output voltage, minimizing losses and maintaining high efficiency without a multi-staged structure, thereby reducing component count and enhancing overall efficiency.
Implementation Method 1
a resonant tank configured to receive wireless power in a magnetic resonance manner
Implementation Method 2
a rectifier configured to rectify the wireless power received by the resonant tank and supply the rectified current to a load, the rectifier including a diode bridge
Data Source
AI summary
A wireless power receiver is disclosed. The wireless power receiver comprises: a resonance tank for receiving magnetic resonance-type wireless power; a rectifier including a diode bridge and a first switch connected to both ends of any one diode for forming the diode bridge, so as to rectify wireless power received by the resonance tank and supply the rectified wireless power to a load; and a controller controlling the first switch so as to operate the rectifier as a full-wave rectifier or a half-wave rectifier.