Modular ESS Power Cabinet for Fast Load Balancing and UPS Continuity
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Solution Overview
Problem
Traditional mobile and sited commercial and industrial scale power generation and storage systems face challenges with load balancing and power fluctuations, leading to noise in 3-phase AC motors and potential system failures, especially when dealing with short power spikes that traditional generators cannot catch up with.
Innovation Solution
A modular containerized energy storage system with a power cabinet that includes power electronics such as DC-AC inverters, transformers, and frequency regulators, allowing for multiple energy inputs and outputs, and enabling the connection and disconnection of battery-based energy storage systems while maintaining power continuity, thereby reducing the need for balancing legs of 3-phase power distribution and shielding against electrical noise.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Speed
If traditional combustion-based power generation systems are used, then long duration power supply is achieved, but the system cannot respond to short power spikes lasting tenths of hundredths of a second
Solution Approach 1:
The system divides the power supply function into two separate segments: battery-based energy storage systems for short-duration high-speed response (tenths of hundredths of a second), and combustion-based generators for long-duration sustained power supply. This segmentation allows each component to optimize its performance for its specific time scale without compromise.
Solution Approach 2:
The system dynamically switches between different power sources based on the temporal characteristics of the power demand. For short spikes, the battery system activates immediately; for sustained loads, the combustion system takes over. This dynamic allocation optimizes both response speed and duration of action.
2Reliability
If traditional combustion UPS systems are deployed without proper load balancing, then power supply is provided, but electrical noise occurs in 3-phase AC motors
Solution Approach 1:
The battery-based energy storage system acts as an intermediary between the combustion generator and the 3-phase AC motors. It absorbs and smooths out electrical noise and fluctuations before they reach the motors, while the combustion system provides stable baseline power. This intermediary function protects the motors from harmful electrical noise.
3Reliability
If massive power fluctuations occur in traditional motor/engine-based systems, then the system may handle sustained loads, but short spikes cause total system failure
Solution Approach 1:
The battery-based energy storage systems serve as a cushioning buffer that absorbs short power spikes before they can propagate through the system and cause failure. This beforehand cushioning protects the combustion engines and motors from damaging fluctuations while maintaining overall system stability.
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 provides long-duration uninterruptible power supply capabilities, improves load balancing, and reduces the risk of system failures by allowing seamless transitions between energy sources, including battery-based and combustion fuel systems, while optimizing power distribution and reducing the need for transformers.
Implementation Method 1
power electronics including a DC-AC inverter
Implementation Method 2
transformer
Implementation Method 3
frequency regulator
Data Source
AI summary
A system employing a modular containerized energy-storage systems (ESS) and power cabinet control system allows for long duration uninterruptible power supply (UPS) capabilities for battery and electrochemical storage devices. modular containerized ESS and power cabinet control system. Long duration uninterruptible power supply (UPS) capabilities for battery and electrochemical storage devices may be realized. Embodiments of a modularized energy storage system can comprise a first power cabinet configured to function as a primary power and load balancing appliance. The first power cabinet can comprises power electronics including a DC-AC inverter, transformer, and frequency regulator; a set of one or more energy storage systems, which may be battery-based.