Microcontroller Power Manager Optimizing Voltage and Frequency
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Solution Overview
Problem
Power management systems experience inefficiencies due to switching, conduction, and magnetization losses, as well as transient spikes in voltage, leading to system instability and unsteady output voltage.
Innovation Solution
A power manager with a microcontroller that optimizes parameters such as output voltages and switching frequencies of multiple power supplies in real-time, based on load conditions and anticipated changes, to minimize power loss and reduce transient responses.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Loss of energy
If power supplies operate with fixed parameters, then system operation is simple, but power loss increases due to switching, conduction, and magnetization losses
Solution Approach 1:
The patent implements dynamic parameter adjustment by using a microcontroller to continuously monitor power supply conditions and adjust switching frequency, output voltage, and other parameters in real-time based on load requirements and efficiency optimization goals, transforming fixed-parameter power supplies into adaptive systems that minimize losses across varying operating conditions
Solution Approach 2:
The patent applies parameter changes by modifying key operational parameters including switching frequency, output voltage, and duty cycle based on real-time feedback from power supply conditions. The microcontroller adjusts these parameters dynamically to optimize efficiency and reduce power loss during different loading scenarios and transient events
2Speed
If output voltage is adjusted rapidly, then system responds quickly to load changes, but transient spikes cause system instability
Solution Approach 1:
The patent implements preliminary action by using the microcontroller to predict upcoming load changes based on monitoring patterns and proactively adjust output voltage before transient spikes occur. The system prepares parameter adjustments in advance to smooth transitions and prevent instability during load changes
Solution Approach 2:
The patent applies feedback mechanisms by continuously monitoring output voltage, load current, and power supply conditions, then using this feedback information to dynamically adjust parameters. The closed-loop control system detects transient conditions and automatically corrects parameter settings to maintain stability during voltage adjustments
3Productivity
If switching frequency is increased, then power conversion efficiency improves, but switching losses increase
Solution Approach 1:
The patent implements dynamic switching frequency adjustment where the microcontroller continuously optimizes switching frequency based on load conditions. During light loading, the frequency is reduced to minimize switching losses, while during heavy loading, the frequency is increased to maintain power conversion efficiency, achieving optimal balance across all operating conditions
Data Source
AI summary
A method performed by a circuit for managing power, the method comprising: receiving a plurality of voltages at a microcontroller, where each voltage is associated with a distinct power supply; determining one or more voltages of the plurality of voltages are being or will be adjusted by the respective power supply; in response to the determining, optimizing, using the microcontroller, one or more parameters of one or more of the power supplies to minimize power loss.