Modular ESS Power Cabinet for Fast Backup Power Switching
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Solution Overview
Problem
Traditional mobile and sited commercial and industrial scale power generation and storage systems face challenges in separating power generation from energy storage, maintaining power load balancing, and managing massive power fluctuations, leading to potential system failures and damage to devices.
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 providing uninterrupted power supply and load balancing.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Duration of action of moving object
If traditional combustion-based power generation systems are used to provide backup power, then operation time can be extended by adding fuel, but the systems cannot be separated into independent power production and energy storage devices
Solution Approach 1:
The system is divided into separate functional modules: power production devices (combustion engines, generators), energy storage devices (battery systems, capacitors), and power distribution devices. This segmentation allows independent optimization of each component while enabling flexible reconfiguration based on power duration requirements.
Solution Approach 2:
The power distribution device serves multiple functions: it manages power flow from various sources, controls energy storage charging/discharging, maintains power quality, and coordinates between different energy sources. This multi-functionality replaces the need for separate control systems.
2Reliability
If traditional UPS systems are deployed in areas without proper load balancing, then power supply is provided, but electrical noise occurs and 3-phase AC motors are affected
Solution Approach 1:
The power distribution device acts as an intermediary between power sources and loads, actively managing power flow to isolate loads from disturbances. It uses power electronics to filter noise, balance 3-phase loads, and provide clean power output even when input power quality is poor.
Solution Approach 2:
Traditional mechanical load balancing methods are replaced with electronic power conversion and control systems. The power distribution device uses electronic switches, inverters, and controllers to dynamically balance loads and eliminate electrical noise without mechanical moving parts.
3Reliability
If motor/engine-based systems are used for power generation, then backup power is provided, but they cannot respond to massive power fluctuations occurring in tenths of hundredths of a second
Solution Approach 1:
The system uses electronic power conversion circuits that can rapidly copy and replicate power characteristics. When power fluctuations occur, the power distribution device can instantly replicate the required power output using stored energy in capacitors and batteries, bypassing the slow mechanical response of traditional engines.
Solution Approach 2:
The system changes the operational parameters of power delivery by using power electronics to control voltage, current, and frequency dynamically. This allows instantaneous adjustment of power output in response to fluctuations, whereas traditional mechanical systems are constrained by rotational inertia and mechanical response times.
4Adaptability or versatility
If power cabinets are connected in a daisy-chain configuration, then system expansion is enabled, but the first power cabinet must provide multi-phase output voltages to energize subsequent cabinets
Solution Approach 1:
Each power cabinet is designed as an independent modular unit with its own power conversion and control systems. This segmentation allows cabinets to be connected in various configurations without requiring complex inter-cabinet power distribution schemes, as each unit can operate autonomously or in coordination with others.
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 modular system enables long-duration uninterruptible power supply, reduces the need for balancing 3-phase power distribution, shields against electrical noise, and allows for seamless transition between energy sources, enhancing system reliability and efficiency.
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.