Retrofit DC-DC Modules for RRH Voltage Drop Compensation
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Solution Overview
Problem
Existing power transmission systems in wireless communication systems, particularly in split Radio Base Stations (RBS) architectures, lack DC-DC converters, making them vulnerable to voltage drops and lightning strikes, and there is a need for a retrofit solution to install these converters in existing systems.
Innovation Solution
A power conversion retrofit system that integrates DC-DC converters into existing power communications systems by repurposing slots in base overvoltage protection units, using DC voltage conversion modules and connectivity and control modules to compensate for voltage drops and stabilize input voltage to remote radio heads (RRHs).
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If DC-DC converters are installed in existing power transmission systems through retrofitting, then voltage stability and protection against lightning strikes are improved, but device complexity and installation difficulty increase
Solution Approach 1:
The DC-DC converter is divided into modular components that can be independently installed and configured within the existing power transmission system. This segmentation allows the converter to be integrated in stages rather than requiring complete system replacement, thereby improving voltage stability while managing complexity through incremental deployment.
Solution Approach 2:
The patent introduces intermediate coupling circuits and control interfaces that bridge the existing power transmission infrastructure with the new DC-DC converter components. These intermediary elements facilitate seamless integration without requiring fundamental changes to the established system architecture, thus enhancing reliability while minimizing the increase in system complexity.
2Reliability
If DC-DC converters are retrofitted into existing systems, then protection against voltage drops and lightning strikes is improved, but installation time and cost increase
Solution Approach 1:
The retrofit kit is pre-configured with all necessary DC-DC converter components, coupling circuits, and mounting hardware assembled in advance. This preliminary preparation allows installation technicians to simply install the pre-assembled unit into the existing system without performing complex assembly procedures on-site, thereby improving protection capability while significantly reducing installation time.
Solution Approach 2:
The patent employs standardized, off-the-shelf DC-DC converter modules that can be quickly installed and replaced if necessary. These modular units are designed for rapid deployment using common installation practices and tools, reducing both installation time and cost while providing robust protection against voltage drops and lightning strikes.
3Manufacturing precision
If DC-DC converters are integrated into existing power transmission systems, then voltage control precision is improved, but ease of operation decreases
Solution Approach 1:
The DC-DC converter incorporates automatic feedback control mechanisms that continuously monitor output voltage and adjust operating parameters in real-time to maintain precise voltage control. This automated feedback eliminates the need for manual calibration and adjustment, thereby achieving high voltage control precision while maintaining ease of operation through self-regulating functionality.
Solution Approach 2:
The converter is designed with self-diagnostic and self-adjustment capabilities that allow it to automatically optimize its performance based on system conditions. This self-service functionality ensures precise voltage control without requiring specialized operational knowledge or frequent manual intervention, thus improving voltage control precision while preserving operational simplicity.
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 effectively stabilizes input voltage to RRHs, protecting them from voltage fluctuations and lightning strikes, while allowing for retrofitting without requiring new infrastructure, thus enhancing system resilience and efficiency.
Implementation Method 1
a DC-DC converter (210) having an input (211) coupled to the power supply (102) and having an output (214) coupled to the base end of the DC power cable (132)
Data Source
AI summary
A power boost retrofit system for a power communications system having an existing base overvoltage protection unit, where one end of DC power cables is connected to remote radio heads (RRHs). The power conversion retrofit system includes one or more pluggable DC voltage conversion (DCVC) modules containing DC-DC converters are inserted into respective slots in a front of an enclosure of the base overvoltage protection unit. A connectivity and control (CC) module is inserted into a rear of the enclosure to mate with the DCVC modules and to connect with an opposite end of DC power cables.