Hybrid UPS Switching Architecture for Extended Backup Runtime
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Solution Overview
Problem
Existing uninterruptible power supply (UPS) systems have limited run-time due to storage capacity constraints, often failing to provide continuous power during grid failures and lacking flexibility in power management strategies.
Innovation Solution
A versatile UPS system with multiple switching states and bidirectional converters that allows seamless transition between power sources, including grid power, battery power, and energy storage, enabling efficient power distribution and management.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Duration of action of moving object
If battery storage capacity is increased to extend run-time, then power availability duration is improved, but device size and cost increase
Solution Approach 1:
The patent combines multiple energy storage technologies (battery and super-capacitor) into a hybrid system where each component contributes its strengths. The super-capacitor provides rapid power delivery for short-duration needs while the battery handles longer-duration requirements, achieving extended run-time without proportionally increasing total storage volume.
Solution Approach 2:
The system dynamically switches between different power sources based on real-time power demands and availability. The controller adjusts the contribution of battery versus super-capacitor depending on the duration and intensity of power requirements, optimizing the use of available storage capacity across varying operational conditions.
2Adaptability or versatility
If multiple power sources are integrated to improve flexibility, then adaptability is improved, but device complexity increases
Solution Approach 1:
The hybrid power system is designed to perform multiple functions: normal power delivery, backup power supply, energy harvesting, and grid interaction. The same architectural framework supports different operational modes (standby, online, energy storage) without requiring separate dedicated systems for each function.
Solution Approach 2:
A controller acts as an intermediary that manages the complexity of coordinating multiple power sources. It handles the switching logic, power flow management, and coordination between battery, super-capacitor, and grid, shielding users from the underlying complexity while enabling flexible power management strategies.
3Reliability
If rapid switching between power sources is implemented, then power continuity is improved, but switching losses increase
Solution Approach 1:
The system pre-charges the super-capacitor during normal operation when grid power is available, so that during transitions or outages, the pre-charged capacitor can immediately supply power without requiring high-current switching that would generate significant losses. This preliminary energy storage in the capacitor bank reduces the burden on switching components during critical transitions.
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 system provides extended power availability during grid failures, supports rapid switching between power sources, and optimizes energy usage, enhancing reliability and flexibility in power supply.
Implementation Method 1
bidirectional converters that allows seamless transition between power sources
Data Source
AI summary
Systems, apparatuses, and methods are described for a versatile UPS. The versatile UPS is operative to provide power to a load and to an interconnected network for delivering electricity from producers to consumers (i.e., an electricity grid, or simply, “a grid”). The versatile UPS has a plurality of switches providing for a multiplicity of switching states. The output to the load, the grid, or both is dependent, at least in part, on the switching states. Related systems, methods and apparatus is also described.