PCS Power Allocation by Driving Ratio for Higher Efficiency
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Solution Overview
Problem
Existing power supplying systems do not efficiently distribute energy according to the plant characteristics and operating environment, leading to decreased overall system efficiency and reduced lifespan of power conditioning systems (PCSs).
Innovation Solution
A method that compares required output power with reference values to allocate and reallocate power among PCSs or PEBBs, operating them in different modes based on maximum and minimum operation ratios, optimizing power distribution and usage according to predicted power generation and market trends.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If power is distributed without considering plant characteristics and operating environment, then system operation is simplified, but overall system efficiency decreases
Solution Approach 1:
The patent changes operational parameters (operation modes) of PCSs based on plant characteristics and operating environment parameters. The control unit adjusts system operation by varying the operation mode assignments according to environmental conditions, power generation predictions, and market trends, thereby optimizing efficiency without requiring complex manual intervention.
2Device complexity
If PCSs operate without optimized power distribution, then system complexity is reduced, but PCS lifetime decreases
Solution Approach 1:
The patent applies preliminary action by predicting power generation and market trends in advance to proactively assign optimal operation modes to PCSs. This forward-looking approach allows the system to prepare appropriate operation strategies before actual operating conditions arise, extending PCS lifetime by avoiding suboptimal operation patterns without requiring complex real-time adjustments.
Data Source
AI summary
An output distribution method of a power supply system includes: if a required output power of a power supply system exceeds a reference value, assigning the required output power equally to all PCSs; if the required output power does not exceed the reference value, assigning at least one maximum power driving PCS to be operated with a maximum driving ratio power, on the basis of a maximum driving ratio and a lowest driving ratio; if a remaining power unassigned during power assignment of the maximum power driving PCS exceeds a lowest driving ratio power, assigning a remaining power driving PCS for operation of the remaining power; and if the remaining power unassigned during the power assignment of the maximum power driving PCS does not exceed the lowest driving ratio power, equally dividing and reassigning the required output power to the maximum power driving PCS.