UPS Controller Switching Between Discharge and Bypass Modes
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Solution Overview
Problem
Conventional UPS systems are inadequate for handling large-scale and long-duration power interruptions, and they fail to consider overcurrent protection of the battery module, leading to potential instantaneous power interruptions.
Innovation Solution
A power supply apparatus comprising a power storage module, a DC-AC inverter, a bypass circuit, and a controller that switches between discharge and bypass modes to prevent instantaneous power interruptions by setting a threshold for overload states, allowing the power storage module to continue outputting power during overloads.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a conventional UPS system is used to protect against power interruptions, then brief power interruptions can be handled, but large-scale and long-time power interruptions cannot be effectively addressed
Solution Approach 1:
The patent combines a power storage module (battery) with a commercial power input system to create a hybrid power supply apparatus. The battery module is charged from commercial power during normal operation and provides power during interruptions, merging two power sources to achieve both brief and long-duration power interruption coverage.
Solution Approach 2:
The power supply apparatus is designed to perform multiple functions: it operates as a standard UPS for brief interruptions, charges the battery from commercial power during normal operation, and provides extended power supply during large-scale interruptions. The system universally handles different power interruption scenarios through a single integrated design.
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
This solution prevents instantaneous power interruptions by enabling the power storage module to continue supplying power during overloads, ensuring a stable power supply and reducing the risk of battery damage from excessive discharge currents.
Implementation Method 1
a DC-AC inverter configured to convert output of the power storage module into AC power
Data Source
AI summary
Provided is a power supply apparatus including a power storage module, a DC-AC inverter, a bypass circuit, and a controller. The DC-AC inverter converts output of the power storage module into AC power. The bypass circuit directly transmits the AC power. The controller switches between a discharge mode for supplying output of the DC-AC inverter to a load, and a bypass mode for supplying output of the bypass circuit to the load. A threshold for switching between the discharge mode and the bypass mode is set to a range that enables the power storage module to provide output in an overload state.