Power Supply Controller Predictive Discharge Timing
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Solution Overview
Problem
Existing power supply systems face inefficiencies when operating below rated power, leading to increased power loss and reduced efficiency, especially when peak power consumption is temporary and not continuously high, causing excessive power supply and higher grid power usage.
Innovation Solution
A controller that predicts energy demand and limits power output from the electric power converter to rated power only during computed discharge times within an assessment period, optimizing efficiency and minimizing power loss by matching supply with demand.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the electric power converter operates continuously to supply power to the load, then the load receives continuous power supply, but the operating efficiency decreases when operating below rated power
Solution Approach 1:
The control device operates the electric power converter in periodic cycles: operating at rated power for a specific duration, then stopping temporarily. This periodic operation pattern allows the converter to maintain high efficiency by operating at optimal rated power levels rather than continuously at reduced power levels, while still providing necessary power supply to the load through intermittent operation
Solution Approach 2:
The control device predicts future power consumption of the load in advance and schedules converter operation accordingly. By predicting when power will be needed and operating the converter at rated power during predicted high-demand periods, the system prepares in advance to meet load requirements efficiently, avoiding continuous low-efficiency operation
2Loss of energy
If the electric power converter operates at rated power continuously, then high operating efficiency is achieved, but excessive power is supplied when load demand is low
Solution Approach 1:
The control device continuously monitors actual power consumption of the load and compares it with predicted values. Based on this feedback, the controller dynamically adjusts the operation timing and duration of the electric power converter, ensuring that power is supplied at rated power only when actually needed by the load, thereby avoiding excessive power supply while maintaining high efficiency operation
Solution Approach 2:
The system transitions from static continuous operation or simple on/off control to dynamic adaptive control. The control device dynamically determines the optimal operation timing and duration of the converter based on real-time load conditions and predictions, allowing the system to adapt its power supply pattern to match actual demand fluctuations while maintaining rated power operation for efficiency
3Loss of energy
If power supply is limited only to time zones with continuously high power consumption, then converter efficiency is maximized, but power supply is insufficient when power consumption increases temporarily
Solution Approach 1:
The control device predicts future power consumption patterns in advance, including temporary increases in demand. By scheduling converter operation based on these predictions, the system proactively prepares to supply power during anticipated demand spikes, ensuring adequate power supply responsiveness while maintaining efficient rated-power operation rather than reacting too late to demand changes
Data Source
AI summary
A controller has a predicting section which computes a predicted electric energy predicted to be supplied from a power distribution grid to the load during an assessment period which is a predetermined period. The controller has a supply electric energy computing section which computes a supply electric power based on the predicted electric energy, the supply electric energy being an electric energy to be supplied to the load from the electric power converter during the assessment period. The controller has a time computing section which computes a discharge time by dividing the supply electric energy by a rated power of the electric power converter. The controller has a control section which controls the electric power converter so that an electric power corresponding to the rated power is supplied to the load only for the discharge time within the assessment period.