Parallel Power Supply Current Prediction for Peak Demand Control
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Solution Overview
Problem
Existing power supply systems with a main power supply and capacitor in parallel struggle to consistently provide sufficient power due to varying discharge capacity of the capacitor, especially when facing frequent and random peak power demands.
Innovation Solution
An information processing device with a capacitor prediction unit that estimates current supply from the capacitor based on past drive commands and an allowable output prediction unit that calculates the maximum current the system can supply, allowing for drive command adjustments to prevent capacity shortages.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Speed
If power is frequently extracted from the capacitor to meet instantaneous power demands, then the power supply responsiveness is improved, but the discharge capacity of the capacitor deteriorates due to varying charge/discharge conditions
Solution Approach 1:
The system performs preliminary action by predicting the capacitor's discharge capacity before power extraction occurs. The prediction unit estimates the discharge capacity based on past charge/discharge situations, and the control unit uses this prediction to adjust the drive command in advance, ensuring that power extraction does not exceed the capacitor's actual capacity while maintaining responsive power supply.
2Device complexity
If the capacitor discharge capacity is not predicted, then the system complexity is reduced, but the power supply reliability deteriorates due to insufficient power during frequent extraction
Solution Approach 1:
The system implements feedback by continuously monitoring the capacitor's charge/discharge history and using this information to predict future discharge capacity. The prediction unit processes past operational data and feeds this predicted capacity information back to the control unit, which adjusts the drive command accordingly. This closed-loop feedback mechanism ensures reliable power supply without requiring overly complex prediction models.
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
The system efficiently predicts and adjusts power supply to meet demand, preventing interruptions by accurately estimating capacitor discharge and optimizing power usage, thus enhancing power resource utilization.
Implementation Method 1
a main power supply such as a secondary battery or a fuel cell and a capacitor connected in parallel
Data Source
AI summary
To predict the amount of power that can be supplied from a power supply device in which a main power supply and a capacitor are connected in parallel. An information processing device including: a capacitor prediction unit that predicts an amount of current supplied from a capacitor by a latest drive command on the basis of a total amount of current supplied by a previous drive command from a power supply unit including a main power supply and the capacitor connected in parallel, and an amount of current supplied from the capacitor by the previous drive command; and an allowable output prediction unit that predicts an allowable amount of current that is allowed to be supplied from the power supply unit by a next drive command on the basis of a total amount of current supplied from the power supply unit by the latest drive command and the amount of current predicted by the capacitor prediction unit.