Charging System MPPT Algorithm for Voltage Stability
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Solution Overview
Problem
Mobile devices powered by alternative energy sources face inefficiencies due to unstable voltage supplies from harvesters, which require costly voltage regulators to maintain stable voltage, leading to power loss and increased costs.
Innovation Solution
A charging system incorporating a power stage switching circuit and a Maximum Power Point Tracking (MPPT) searching algorithm device that dynamically adjusts the output voltage, eliminating the need for an extra voltage regulator by leveraging inherent harvester characteristics and applying intelligence for maximum power tracking and voltage control.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Stability of the object's composition
If a voltage regulator is used to stabilize voltage from alternative power sources, then voltage stability is improved, but power loss increases and cost increases
Solution Approach 1:
The patent removes the voltage regulator component from the power delivery path between the alternative power source and the mobile device. Instead of using a regulator to stabilize voltage, the system directly connects the harvester output to the device, accepting voltage variations without active regulation, thereby eliminating the power loss and cost associated with voltage regulation.
Solution Approach 2:
The system allows the mobile device to self-adjust to the varying voltage output from the alternative power source. The device's internal power management circuitry handles voltage variations without requiring an external regulator, making the system self-sufficient and eliminating the need for additional voltage stabilization components.
2Stability of the object's composition
If a voltage regulator is used to stabilize voltage from alternative power sources, then voltage stability is improved, but device complexity and cost increase
Solution Approach 1:
The voltage regulator component is extracted and removed from the power delivery path. This simplifies the overall system architecture by reducing the number of components required, eliminating the complexity associated with voltage regulation circuitry while still achieving functional operation.
Solution Approach 2:
The mobile device's existing power management circuitry is designed to handle multiple input conditions including varying voltage levels. This multi-functional capability allows the device to operate directly from alternative power sources without requiring dedicated voltage regulation components, thereby reducing device complexity.
3Productivity
If maximum power extraction is implemented from alternative power sources, then power delivery efficiency is improved, but control complexity increases
Solution Approach 1:
The system implements a feedback mechanism where the controller continuously monitors the output voltage and current from the alternative power source, and adjusts the power extraction accordingly. This feedback control enables maximum power point tracking (MPPT) to optimize power delivery efficiency while maintaining manageable control complexity through simple monitoring and adjustment loops.
Solution Approach 2:
The power extraction system dynamically adjusts its operation based on real-time conditions from the alternative power source. The controller modifies extraction parameters adaptively to match the varying output characteristics of harvesters, enabling optimal power delivery without requiring complex predetermined control schemes.
Data Source
AI summary
A charging system may include a switching device to receive an output voltage from an alternative power source and to provide an output voltage of the charging system, and an algorithm device to provide a control signal to the switching device based on a sensed power from the power source and a sensed output voltage from the charging system.