High-Voltage DC/DC Interface for Multi-Source UPS Voltage Matching
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Solution Overview
Problem
High-power electrical facilities often rely on uninterruptible power supplies (UPS) that struggle to integrate and manage DC power from green energy sources like solar and fuel cells due to voltage incompatibilities, posing risks of catastrophic failure.
Innovation Solution
A power component system that includes a rectifier circuit, DC/DC converter circuits, a DC link, an inverter circuit, and fault protection circuit to manage and merge power from both utility and green power sources, ensuring safe and efficient voltage conversion and load protection.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If DC power from green energy sources is integrated into the power supply system, then environmental benefit and sustainability are improved, but voltage incompatibility causes system reliability to deteriorate
Solution Approach 1:
A DC/DC converter circuit is introduced as an intermediary device between the green power source and the UPS system. This converter transforms the incompatible high-voltage DC output from green energy sources into a compatible voltage level that the UPS can accept, thereby enabling integration without direct voltage conflict
Solution Approach 2:
The system dynamically adjusts voltage parameters through the DC/DC converter to match between different power sources. By changing the voltage parameter of the green power source output to be compatible with UPS requirements, the system achieves both sustainability and reliability
2Loss of energy
If high-voltage DC power from green energy sources is directly connected to UPS, then power conversion efficiency is improved, but catastrophic failure risk increases due to voltage incompatibility
Solution Approach 1:
The DC/DC converter serves as a protective intermediary that mediates between the high-voltage green power source and the UPS. It safely transforms the voltage levels while providing isolation and protection, preventing direct voltage conflicts that could cause catastrophic failure
Solution Approach 2:
The fault protection circuit provides beforehand cushioning by detecting potential voltage incompatibility issues before they can cause damage. The circuit is designed to prevent catastrophic failure through prior protection mechanisms
3Adaptability or versatility
If multiple power sources are integrated into a single power supply system, then adaptability and sustainability are improved, but system complexity increases
Solution Approach 1:
The DC/DC converter is designed with multi-functionality, serving both as a voltage transformation device and as a protection device. It can handle multiple power source types (green energy sources, battery energy storage systems, fuel cells) while providing unified voltage conversion and fault protection, thereby reducing overall system complexity despite handling multiple sources
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 safe integration and utilization of high-voltage DC power from green energy sources with utility power, reducing the risk of failure and enhancing the reliability of power supply systems.
Implementation Method 1
a rectifier circuit configured to receive a first input power from a first power source and convert the first input power to a first direct current (DC) power, wherein the first input power includes an alternative current (AC)
Implementation Method 2
one or more DC/DC converter circuits configured to receive one or more second input powers from one or more second power sources and convert the one or more second input powers into one or more second DC powers
Data Source
AI summary
A power component may include a rectifier circuit configured to receive a first input power from a first power source and convert the first input power to a first direct current (DC) power, wherein the first input power comprises an alternative current (AC). The component may include one or more DC/DC converter circuits configured to receive one or more second input powers from one or more second power sources and convert the one or more second input powers into one or more second DC powers. The component may include a DC link configured to receive the first DC power and the one or more second DC power, wherein the DC link merges an output of the first DC source and output of the one or more second DC sources to produce a final DC power. The component may include an inverter circuit configured to receive the final DC power.