Power Distribution System with Battery Discharge Control
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Solution Overview
Problem
There is a strong demand to effectively utilize DC power stored in batteries in apartment buildings to reduce the reliance on AC power from commercial sources, especially during power outages and to optimize energy distribution.
Innovation Solution
A power distribution system with a first control device that measures residual battery power and adjusts supply to dwelling units based on real-time data, incorporating a power generation device for independent power generation and communication with second control devices to optimize DC power usage, converting AC power to DC when necessary, and managing battery discharge to prevent excessive depletion.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Use of energy by moving object
If DC power is supplied from battery to dwelling units even when no power outage occurs, then AC power usage is reduced, but battery discharge control complexity increases
Solution Approach 1:
The first control device receives power consumption information from second control devices in each dwelling unit and uses this feedback to adjust battery discharge amount dynamically. The system monitors actual power consumption and modifies discharge rates accordingly, creating a closed-loop control system that reduces AC power usage while preventing battery over-discharge.
Solution Approach 2:
The battery discharge amount is made dynamic rather than fixed. The control device adjusts discharge rates in real-time based on changing power consumption patterns in dwelling units and remaining battery capacity, allowing the system to optimize AC power reduction while adapting to varying load conditions.
2Productivity
If battery discharge amount is adjusted based on power consumption information, then energy efficiency is optimized, but control system complexity increases
Solution Approach 1:
The control system is segmented into a central first control device that manages battery discharge and multiple second control devices deployed in each dwelling unit that monitor local power consumption. This distributed architecture allows energy efficiency optimization through localized measurements while keeping the central control logic relatively simple by receiving aggregated information from segments.
Solution Approach 2:
Second control devices in each dwelling unit autonomously measure and report their own power consumption information to the first control device. This self-service approach enables the system to gather necessary data for energy efficiency optimization without requiring complex centralized monitoring infrastructure.
3Productivity
If power consumption information is collected from multiple second control devices, then power distribution optimization is improved, but communication system complexity increases
Solution Approach 1:
The second control devices in each dwelling unit are designed with multi-functionality, serving both as power consumption measurement instruments and as communication nodes in the network. This universal design allows the system to collect power distribution data from multiple locations without adding separate communication infrastructure, optimizing power distribution while keeping the communication system relatively simple.
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
This system reduces AC power consumption in dwelling units by efficiently distributing DC power from batteries, optimizing energy usage based on consumption patterns and power generation levels, and preventing battery over-discharge, thereby enhancing energy efficiency and reliability.
Implementation Method 1
a battery (BT) storing the electric power generated by the solar cell (SC)
Implementation Method 2
a converter for converting an AC power supplied from a commercial power source to a DC power
Data Source
AI summary
A power distribution system for distributing an electric power charged in a battery to a plurality of dwelling units includes a power generation device which has a independent power generation function and is configured to generate an electric power and charge the battery with at least a part of the electric power thus generated, a first control device having a residual amount measuring unit for measuring a residual amount of the electric power charged in the battery and a plurality of second control devices which are provided in a corresponding relationship with the dwelling units and make communications with the first control device. The first control device is configured to adjust an amount of the electric power supplied from the battery to the dwelling units based on a measurement result of the residual amount measuring unit and information received from each of the second control devices.