Uninterruptible Power System with Dynamic Output Derating
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Solution Overview
Problem
Current uninterruptible power systems lack flexibility in usage scenarios as they are designed to connect either through a terminal block or a power cord, limiting their application after production.
Innovation Solution
An uninterruptible power system with an input unit, battery, voltage conversion units, and a control circuit that allows electrical connection through either a terminal block or a power cord, with the control circuit determining whether to derate output power based on a setting command, enabling flexible usage by preventing overheating and allowing maximum rated power usage.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Power
If the uninterruptible power system is designed to connect through a terminal block, then the maximum rated output power can be used, but the terminal block is not adapted to general sockets and requires additional wiring to a distribution panel
Solution Approach 1:
The uninterruptible power system is designed with a universal input interface that can accept both terminal block connections and power cord connections with standard plugs. This multi-functionality allows the system to adapt to different usage scenarios - it can be connected to distribution panels via terminal blocks for maximum power applications, or to general sockets via power cords for convenient locations, thereby resolving the contradiction between power capability and ease of connection.
2Ease of operation
If the uninterruptible power system is designed to connect through a power cord, then the power cord is adapted to general sockets, but the system cannot use the maximum rated output power to prevent the power cord from burning out
Solution Approach 1:
The system dynamically adjusts its operational parameters based on the connection type detected. When a power cord connection is detected, the system automatically limits the output power to levels safe for the power cord. When a terminal block connection is detected, the system allows maximum rated output power. This dynamic adaptation resolves the contradiction by making power capability flexible rather than fixed.
Solution Approach 2:
The system changes its operational parameters (specifically the maximum allowable output power) based on the connection type. The control circuit detects whether a power cord or terminal block is being used and adjusts the power rating accordingly - limiting power for power cord connections to prevent overheating, while allowing full power for terminal block connections. This parameter change resolves the contradiction between ease of connection and power capability.
3Stability of the object's composition
If each type of uninterruptible power system is defined to be electrically connected to the AC power source through a terminal block or a power cord at the time of production, then the system has a fixed connection type, but the system cannot be used in different usage scenarios after production
Solution Approach 1:
The uninterruptible power system is designed with universal input terminals that can accommodate both terminal block and power cord connections. The system includes detection circuitry that automatically identifies the connection type and adjusts operational parameters accordingly. This universal design allows the same system to be used in different usage scenarios after production - whether connected to distribution panels or general sockets - thereby resolving the contradiction between structural stability and adaptability.
Solution Approach 2:
The system transitions from a static, fixed connection type design to a dynamic design that can adapt its operational characteristics based on the actual connection type used. The control circuit continuously monitors the connection status and adjusts power limits and operational modes dynamically, enabling the system to function correctly in both terminal block and power cord configurations throughout its service life, thus resolving the contradiction between fixed composition and versatility.
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
Enables the system to be adapted for different usage scenarios post-production, ensuring safe operation and maximum power usage without overheating, thereby increasing flexibility and safety.
Implementation Method 1
The first voltage conversion unit is electrically connected to the input unit and the battery, and is configured to perform at least one of an AC-DC conversion operation and a DC-DC conversion operation
Implementation Method 2
The first voltage conversion unit is electrically connected to the input unit and the battery, and is configured to perform at least one of an AC-DC conversion operation and a DC-DC conversion operation
Implementation Method 3
The second voltage conversion unit is electrically connected to the first voltage conversion unit, and is configured to perform a DC-AC conversion operation
Data Source
AI summary
An uninterruptible power system comprising an input unit, a battery, a first voltage conversion unit, a second voltage conversion unit, an output unit and a control circuit is provided. The control circuit is configured to control the operations of the input unit, the first voltage conversion unit, the second voltage conversion unit and the output unit, and to determine whether to derate the rated output power of the uninterruptible power system according to a first setting command, wherein the first setting command is used to indicate whether the uninterruptible power system is electrically connected to AC power source through a power cord. In addition, an operation method corresponding to the uninterruptible power system is also provided.