Power Module Signal Selection for Multi-Power-System Charge Control
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Solution Overview
Problem
In power systems with multiple power conditioners and central management devices, users face challenges in designating the correct signal for charging/discharging control, leading to increased work and potential cost due to the need for communication facilities when multiple signals are received by power conditioners.
Innovation Solution
A charging/discharging control method and device that receive signals from multiple power systems, calculate the degree of relationship between these signals and input voltage, and control the power module based on the signal with a degree of relationship greater than or equal to a prescribed threshold, automatically selecting the appropriate signal without user designation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If a power conditioner receives signals from multiple central management devices through wireless communication, then the power conditioner can potentially connect to multiple power systems, but it requires user designation of which signal to follow, increasing operational complexity and work until start of charging/discharging control
Solution Approach 1:
The power conditioner automatically determines which signal to follow by calculating the degree of relationship between received signals and its own operation state without requiring user intervention. The control unit autonomously compares the calculated relationship degrees against a threshold and selects the appropriate signal, making the system self-configuring and eliminating manual setup work.
2Adaptability or versatility
If a power conditioner receives signals from multiple central management devices, then the power conditioner has more signal options, but it requires additional communication facilities and increases cost
Solution Approach 1:
The existing wireless receiver and control unit are made multi-functional by enabling them to not only receive and process signals but also autonomously determine signal selection based on calculated relationship degrees. This eliminates the need for additional dedicated communication facilities for signal selection, as the existing components perform multiple functions including automatic signal identification and selection.
3Reliability
If user designation is required for signal selection, then the power conditioner can ensure correct signal selection, but it increases time until start of charging/discharging control
Solution Approach 1:
The system performs preliminary automatic signal selection by calculating the degree of relationship between received signals and the power conditioner's operation state before charging/discharging control begins. This preliminary automatic determination eliminates the need for subsequent user designation, ensuring both accurate signal selection and immediate start of control operations without time loss.
Data Source
AI summary
A charging/discharging control method and a charging/discharging control device, when controlling a power module connected to any of a plurality of power systems, receive a signal broadcast for each of the power systems via a receiver included in the power module, calculate a degree of relationship between the acquired signal and an input voltage inputted to the power module for each of the power systems, and control the power module based on the signal relating to the power system having the degree of relationship greater than or equal to a prescribed threshold.