Solar Panel Transmitter Synchronization for Power-Line Crosstalk
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Solution Overview
Problem
Existing power line and wireless communication systems in solar arrays experience interference due to crosstalk between closely disposed power lines, leading to signal cancellation, weakening, or disruption, which affects the reliability and accuracy of signal transmission.
Innovation Solution
Implementing a synchronization mechanism for transmitters using power line or wireless communication signals, synchronized either through a master-slave configuration or GPS/GNSS timing, to ensure in-phase, frequency-matched, and time-coordinated signal transmission, reducing spurious emissions and interference.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Area of stationary object
If multiple power lines are closely disposed to transmit signals to multiple photovoltaic panels, then signal transmission coverage is improved, but crosstalk and interference between power lines increase
Solution Approach 1:
The patent applies periodic action by synchronizing signal transmission from multiple transmitters to occur at coordinated time intervals. Transmitters operate in synchronized cycles where signals are transmitted periodically rather than continuously, allowing time-division multiplexing that reduces crosstalk while maintaining coverage across multiple photovoltaic panels.
Solution Approach 2:
The patent changes transmission parameters including frequency, phase, and timing of signals from different transmitters. By adjusting these parameters in a coordinated manner, the system optimizes signal coverage while minimizing interference through parameter differentiation and synchronization.
2Device complexity
If transmitters operate independently without synchronization, then device complexity is reduced, but signal interference and cancellation increase
Solution Approach 1:
The patent introduces a master transmitter as an intermediary that coordinates signal transmission among multiple transmitters. The master transmitter generates reference signals that slave transmitters synchronize to, providing centralized coordination that ensures reliable signal transmission while keeping individual transmitter complexity low.
Solution Approach 2:
The patent implements feedback mechanisms where transmitters monitor and adjust their signal transmission based on system-wide synchronization requirements. This feedback ensures that signals from multiple transmitters remain coordinated, maintaining reliability without requiring complex independent control logic at each transmitter.
3Duration of action of stationary object
If signal transmission is continuous, then power delivery to photovoltaic panels is maintained, but interference and spurious emissions increase
Solution Approach 1:
The patent employs periodic signal transmission with synchronized timing across multiple transmitters. By transmitting signals in coordinated periodic cycles rather than continuously, the system maintains power delivery to photovoltaic panels while reducing the duration and intensity of electromagnetic emissions that cause interference.
Solution Approach 2:
The patent uses preliminary synchronization actions where transmitters prepare and coordinate their signal transmission timing before actual power delivery begins. This preliminary coordination ensures that when signals are transmitted, they are properly synchronized to minimize interference while maintaining continuous power delivery.
Data Source
AI summary
A transmitter includes a modulator configured to digitally generate a communication signal whose modulation represents coded information to be transmitted to a local management unit. The transmitter can include a control unit configured to generate harmonic frequencies that are in-phase, inverted, or out-of-phase from a raw signal using fundamental frequencies for modulation.