Power Distribution Optimization for Energy Storage Systems
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Solution Overview
Problem
Current energy storage systems suffer from excessive power losses and reduced battery lifespan due to uniform power allocation among power blocks, leading to inefficient operation and potential failure from unbalanced state of charge and health states.
Innovation Solution
A power distribution optimization system that unevenly allocates real or reactive power signals among power blocks based on efficiency, thermal behavior, health state, and other performance characteristics, allowing some blocks to charge while others discharge, and balancing state of charge to prevent excessive wear and tear.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If uniform power allocation is used among power blocks, then the system operation is simplified, but power losses increase and battery lifespan is reduced
Solution Approach 1:
The patent applies local quality by allocating power differently to each power block based on its individual characteristics. The energy management apparatus determines efficiency and characteristics (thermal behavior, health state, balancing state) for each power block and assigns customized power percentages, allowing each block to operate in its optimal range rather than applying uniform allocation across all blocks.
2Device complexity
If uniform power allocation is used among power blocks, then the control system is simpler, but battery lifespan is reduced due to unbalanced state of charge
Solution Approach 1:
The patent changes the control parameters from uniform power allocation to variable power allocation based on multiple characteristics including efficiency, thermal behavior, health state, and balancing state. The energy management apparatus continuously monitors these parameters and adjusts power distribution dynamically, transforming the control system from static and simple to dynamic and adaptive, thereby extending battery lifespan.
3Ease of operation
If uniform power allocation is used, then the power distribution is easier to manage, but efficiency is reduced due to unbalanced operation
Solution Approach 1:
The patent implements dynamics by transitioning from static uniform power allocation to dynamic variable power allocation. The energy management apparatus continuously adjusts power distribution based on real-time characteristics of each power block, allowing the system to adapt to changing conditions and maintain optimal efficiency while managing complexity through automated control.
4Loss of energy
If uneven power allocation based on multiple characteristics is implemented, then power losses are reduced and battery lifespan is extended, but the system complexity and measurement requirements increase
Solution Approach 1:
The patent applies feedback by implementing a closed-loop control system where the energy management apparatus continuously monitors efficiency, thermal behavior, health state, and balancing state of each power block. This measured information feeds back to adjust power allocation dynamically, reducing power losses while managing measurement complexity through integrated sensing and automated control algorithms.
Data Source
AI summary
An illustrative embodiment disclosed herein is method for power distribution optimization. In some embodiments, the method includes determining an efficiency for each power block of a plurality of power blocks of a power distribution optimization system, determining a characteristic for each power block, determining a power to provide, selecting a first percentage of the power that a first power block is to provide and a second percentage of the power that a second power block is to provide at least based on the efficiency for each power block, the characteristic for each power block, and the power to provide, wherein the first percentage of the power is greater than the second percentage of the power, and sending a dispatch command to cause the first power block to provide the first percentage of the power and the second power block to provide the second percentage of the power.