Solar Array Communication via Toroidal Transformers
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Solution Overview
Problem
Solar panel arrays lack effective communication systems for transmitting and receiving signals related to voltage, current, and temperature, which are crucial for efficient operation and management.
Innovation Solution
A solar panel array communication system utilizing toroidal transformers to inject and sense signals, including temperature, current, and voltage data, through signal bridges and panel bridges, allowing for remote monitoring and control of solar panels by changing the state of switches.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Power
If solar panels are connected in series circuit for power generation, then power supply capability is improved, but communication capability for transmitting voltage, current, and temperature signals is deteriorated
Solution Approach 1:
The patent combines power transmission and communication functions into a single electrical circuit. Communication signals are superimposed on the power carrying wires, allowing both power supply and data transmission to occur simultaneously through the same physical medium, thus resolving the contradiction between improving power capability and maintaining communication capability
Solution Approach 2:
The existing power circuit wires are made to serve dual purposes: transmitting electrical power and carrying communication signals. The toroidal transformers enable the same electrical infrastructure to perform multiple functions, eliminating the need for separate communication wiring and thus resolving the contradiction
2Loss of information
If communication signals are injected into the series circuit, then communication capability is improved, but circuit stability is deteriorated
Solution Approach 1:
Toroidal transformers are introduced as intermediary devices that couple the communication signals to the power circuit without directly injecting them. The transformers provide galvanic isolation, allowing signal transmission while preventing interference and instability in the main power circuit, thus resolving the contradiction between improving communication and maintaining stability
3Productivity
If toroidal transformers are used for signal injection and sensing, then communication efficiency is improved, but device complexity is deteriorated
Solution Approach 1:
The toroidal transformers perform multiple functions simultaneously: they provide galvanic isolation, enable bidirectional communication, and allow for both signal injection and sensing. This multi-functionality reduces the need for additional separate components, thereby limiting the increase in device complexity while maintaining high communication efficiency
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
Enables efficient communication and management of solar panel arrays by allowing real-time monitoring and control of voltage, current, and temperature, enhancing operational efficiency and safety.
Implementation Method 1
a signal bridge across the converter inputs and a first toroidal transformer for injecting a current into the signal bridge capacitor
Implementation Method 2
a second toroidal transformer for sensing current passing through the panel bridge
Data Source
AI summary
A solar panel array includes panel bridges associated with solar panels and a signal bridge associated with the converter for communicating with the panel bridges.