Reverse Power Feeding System for DPU Stability
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Solution Overview
Problem
Reverse power systems face challenges in efficiently powering Distribution Point Units (DPUs) due to the remoteness of these units from central offices, leading to issues with power supply during outages and inefficient power distribution from Customer Premises Equipment (CPEs).
Innovation Solution
A reverse power feeding system that utilizes a control circuitry to adjust power supply from multiple CPEs, each powered by different types of power sources, to ensure sufficient and balanced power delivery to DPUs, using multiple power paths and balancer circuitry to manage power distribution dynamically.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If reverse power feeding is implemented to power DPU from remote CPEs, then power supply to DPU is enabled, but power instability occurs during CPE power outages
Solution Approach 1:
The system performs preliminary classification of CPEs into mains-powered and battery-powered sets before power outages occur. The control circuitry identifies which CPEs have access to AC power mains and which rely on battery reserves, enabling proactive power path configuration that prevents battery drain while ensuring DPU power supply stability
Solution Approach 2:
The control circuitry continuously monitors the power status of each CPE and dynamically adjusts power path configuration based on real-time feedback. When mains power becomes unavailable at certain CPEs, the system detects this change and automatically reconfigures power paths to maintain stable DPU operation without draining battery-powered CPEs
2Power
If all CPEs supply power to DPU simultaneously, then sufficient power is delivered to DPU, but battery-powered CPEs experience unnecessary power drain
Solution Approach 1:
The system segments the CPE population into distinct sets based on power source type: mains-powered CPEs form one set while battery-powered CPEs form another set. The control circuitry independently manages power contributions from each set, directing primary power demand to mains-powered CPEs and minimizing or eliminating power draw from battery-powered CPEs when sufficient mains power is available
Solution Approach 2:
The control circuitry dynamically changes the power supply parameters of individual CPEs based on their power source capability. Mains-powered CPEs are configured to supply higher power levels, while battery-powered CPEs are configured to supply reduced or zero power when mains power is sufficient, thereby optimizing total power delivery while minimizing battery drain
Data Source
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AI summary
A reverse power feeding system for supplying power from a plurality of first devices to a second device, a first set of the plurality of first devices each being powered by a first type power source and a second set of the plurality of first devices each being powered by a second type power source different than the first type power source, the system constituted of: a plurality of power paths, each of the plurality of power paths arranged to transfer DC power between a respective one of the plurality of first devices and the second device; and a control circuitry, the control circuitry arranged to adjust the amount of power supplied by each of the second set of the plurality of first devices over the power paths responsive to the total amount of power supplied by the first set of the plurality of first devices over the power paths.