UPS Controller Adaptive Voltage Adjustment
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Solution Overview
Problem
Uninterruptible power supplies (UPS) face inefficiencies due to power consumption in their operation, which reduces their overall efficiency, especially when providing backup power during primary power failures.
Innovation Solution
A UPS system with a controller that adjusts output voltage levels based on load profiles, using both primary and secondary power sources, and includes adaptive inverter regulation to extend battery runtime by reducing output voltage within acceptable thresholds, thereby optimizing power usage.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Duration of action of moving object
If the UPS operates in battery mode with standard voltage output, then the load receives adequate power, but the battery runtime is limited
Solution Approach 1:
The patent changes the voltage parameter of the output power by introducing a reduced voltage mode (second voltage level lower than first voltage level). The controller dynamically adjusts the output voltage based on load profile, allowing operation at lower voltage when appropriate, thereby extending battery runtime while maintaining adequate power delivery to the load
2Loss of energy
If the UPS provides full power output, then the load receives sufficient power, but energy efficiency is reduced
Solution Approach 1:
The patent applies partial action by providing reduced voltage output (second voltage level) instead of always providing full voltage (first voltage level). The controller determines when reduced voltage is sufficient based on load profile, delivering only the necessary power level required by the load, thus reducing energy loss while maintaining adequate power output
3Loss of energy
If the UPS uses adaptive voltage adjustment, then energy efficiency is improved, but system complexity increases
Solution Approach 1:
The patent implements feedback through the controller that monitors load characteristics and dynamically adjusts the output voltage between two levels. The controller receives information about the load profile and automatically selects the appropriate voltage level, providing intelligent adaptive control that improves energy efficiency while managing system complexity through automated decision-making
Data Source
Figure 1
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Figure 3A~3B
AI summary
Systems and methods of controlling an uninterruptible power supply are provided. In one aspect, an uninterruptible power supply includes a first input configured to receive input power from a first power source, a second input configured to receive input power from a second power source, an output configured to provide output power to a load derived from power from at least one of the first power source and the second power source, a power conversion circuit coupled with the first input, the second input and the output, and a controller coupled with the power conversion circuit. The controller is configured to control the power conversion circuit to provide an output voltage of the output power at a first voltage level, and to control the power conversion circuit to provide an output voltage of the output power at substantially a second voltage level.