Wireless Power Stabilizer Circuit for Load-Step Surge Control
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Wireless powered appliances face challenges in managing power surges due to load step transitions, which are longer in duration and frequency compared to traditional wired devices, leading to potential damage and reduced device lifespan.
Innovation Solution
A power management system incorporating a power level detection circuit and a power transition stabilizer circuit to detect voltage thresholds and electrically couple electrical loads to stabilize supply voltage, using components like MOSFETs and resistors to absorb excess power during load step transitions.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If wireless powered appliances use wireless power transmission, then ease of operation is improved, but power surges during load step transitions cause reliability to deteriorate
Solution Approach 1:
The power management circuit is activated before load step transitions occur to proactively detect voltage thresholds and electrically couple electrical loads to stabilize supply voltage, preventing power surge damage before it happens
Solution Approach 2:
The power management circuit acts as an intermediary between the wireless power receiver and the appliance loads, detecting voltage levels and controlling the coupling of electrical loads to stabilize power delivery and prevent surges
2Reliability
If power management circuits are added to stabilize voltage, then reliability is improved, but device complexity increases
Solution Approach 1:
The power management circuit performs multiple functions including voltage threshold detection, load control, and power surge prevention through integrated circuitry, reducing the need for separate dedicated components for each function
Solution Approach 2:
The circuit dynamically changes its operational parameters by detecting voltage thresholds and adjusting the coupling state of electrical loads based on real-time power conditions, enabling adaptive stabilization without complex control systems
3Reliability
If electrical loads are electrically coupled to reduce supply voltage quickly, then power surge protection is improved, but energy loss increases
Solution Approach 1:
The power management circuit continuously monitors supply voltage levels and provides feedback control by adjusting the coupling state of electrical loads based on detected voltage thresholds, ensuring loads are activated only when power surge protection is needed
Solution Approach 2:
The circuit extracts only the necessary amount of power for stabilization by selectively coupling electrical loads based on detected voltage thresholds, rather than continuously dissipating excess power, thereby minimizing unnecessary energy loss
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
Effectively manages power surges by quickly reducing supply voltage, preventing damage to electrical components and improving the operational lifespan of wireless powered appliances.
Implementation Method 1
one or more wireless power receivers configured to generate electric power from a magnetic field emitted from one or more wireless power transmitters
Data Source
AI summary
Certain aspects of the present disclosure provide techniques for power management of a wireless powered appliance. A wireless powered appliance includes a wireless power receiver configured to generate electric power from a magnetic field emitted from a wireless power transmitter. The electric power comprises a supply voltage. The wireless powered appliance further includes power level detection circuit comprising circuit components configured to generate one or more output signals. The one or more output signals correspond to the supply voltage exceeding one or more thresholds. The wireless powered appliance further includes a power transition stabilizer circuit configured to receive the one or more output signals and the supply voltage. The power transition stabilizer circuit includes one or more electrical loads configured to electrically couple to the supply voltage based on the one or more output signals such that the supply voltage is reduced by the one or more electrical loads.