Remote Array Mapping for Photovoltaic Modules
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Solution Overview
Problem
Existing photovoltaic (PV) system installation processes face challenges in accurately mapping and verifying the electrical connections and configurations of PV modules, particularly in identifying the relative positions and groupings of components within a PV array, which is crucial for efficient energy generation and maintenance.
Innovation Solution
A location testing module (LTM) is employed to determine the location of wired components by sending test signals and measuring responses, using sensors to verify readings and adjust testing parameters to accurately identify groupings and relative positions of PV modules within the array, employing techniques such as frequency sweeps and standard deviation-based scoring to refine the mapping process.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If manual installation and connection of PV modules is performed, then the PV system can be assembled and connected, but accurate mapping and verification of electrical connections and component positions cannot be achieved
Solution Approach 1:
The PV modules perform self-identification and self-mapping by automatically responding to test signals with their unique identifiers and electrical characteristics. The system maps the array configuration autonomously without requiring manual input or complex external mapping equipment, thereby achieving high measurement precision while maintaining simple device complexity.
2Measurement precision
If test signals are sent through the array to identify component locations, then accurate mapping can be achieved, but the testing process becomes time-consuming and complex
Solution Approach 1:
The system employs periodic test signals at different frequencies to efficiently identify component locations and verify connections. By using alternating current at various frequencies rather than continuous DC testing, the system achieves accurate location identification while significantly reducing testing time through rapid periodic measurements.
3Reliability
If multiple test signals at different frequencies are used to verify connections, then connection verification accuracy improves, but the testing complexity and time required increase
Solution Approach 1:
The system uses feedback from component responses to test signals to automatically adjust and refine the mapping process. By analyzing the electrical characteristics and response patterns of PV modules and connectors, the system verifies connections accurately without requiring complex manual testing procedures, thereby improving reliability while keeping device complexity manageable.
Data Source
AI summary
Electrical component location is provided. Employed location techniques may include providing a signal, having components to be located sense the signal and report back the sensed signal, and determining relative locations for one or more of the components using the sensed signals reported by the components.