Mobile UPS Power Unit With Bidirectional Grid Energy Exchange
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Solution Overview
Problem
Existing emergency power generators and UPS systems are maintenance-intensive, costly, and inflexible, leading to energy surplus loss in power grids with renewable energy sources, and cannot dynamically react to load changes.
Innovation Solution
A mobile power supply unit with bidirectional interfaces and energy storage device, allowing flexible energy exchange between the power grid and storage, enabling simultaneous energy supply and recharge via multiple sources.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If diesel generators are used for emergency power supply, then power supply capability is ensured, but maintenance intensity increases and operational costs rise
Solution Approach 1:
The patent replaces the mechanical diesel generator system with an electrical energy storage system consisting of battery modules, power conversion devices, and control systems. This substitution eliminates the need for mechanical engines, fuel systems, and exhaust treatments, thereby ensuring reliable power supply while dramatically reducing maintenance requirements and operational costs.
2Stability of the object's composition
If traditional UPS systems are used, then power supply stability is maintained, but adaptability to different energy sources and load changes is reduced
Solution Approach 1:
The patent designs a multi-functional energy storage system that can accept energy from diverse sources including photovoltaic systems, wind power, grid electricity, and traditional generators. The power conversion device and control system automatically adapt to different input characteristics and load requirements, maintaining stable power supply while maximizing adaptability to various energy sources and dynamic load changes.
Solution Approach 2:
The system incorporates dynamic power conversion devices that can rapidly adjust their operating parameters in response to changing load conditions and energy source availability. The control system continuously monitors system state and dynamically optimizes power flow distribution, enabling the system to maintain stability while adapting to real-time variations in energy input and demand.
3Speed
If energy storage devices are used for power supply, then response speed to load changes improves, but energy surplus from renewable sources cannot be utilized
Solution Approach 1:
The patent implements a continuous energy management system that simultaneously performs multiple functions: storing energy from renewable sources when available, supplying power to loads when needed, and maintaining system stability. The power conversion device continuously manages bidirectional energy flow between storage devices, renewable sources, and loads, ensuring that energy surplus is captured and utilized rather than lost, while maintaining rapid response capability to load changes.
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
Provides a flexible, cost-effective, and dynamic uninterruptible power supply that can utilize various energy sources and adapt to load changes, reducing maintenance needs and energy surplus loss.
Implementation Method 1
an energy storage device (34), in particular a battery, with a high power capacity
Data Source
Figure 1
AI summary
The invention relates to a mobile power supply unit (30) comprising means for uninterruptible power supply of an external electrical grid (10), wherein the power supply unit (30) has an energy store (34), a first interface (31), which is electrically connected to the energy store (34), for transmitting power, a second interface (32), which is electrically connected to the energy store (34), for transmitting power, and an electronics unit (33) which is designed to monitor and control the charging of the energy store (34) via at least the second interface (32) and the discharging of the energy store (34) via at least the first interface (31).