Inverter Code Pairing for PV Theft Prevention
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Solution Overview
Problem
Photovoltaic power generation systems face challenges in theft detection and prevention due to the ease of theft and high cost of photovoltaic panels.
Innovation Solution
A method and system that utilize a unique code pairing system between an inverter and photovoltaic panels, where a first code is written in a memory attached to the photovoltaic panels and a second code, either a copy or a hash of the first code, is stored in a memory attached to the inverter. This system compares the codes during power generation to prevent unauthorized operation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If photovoltaic panels are deployed in power generation systems, then environmental benefits and power generation capability are improved, but vulnerability to theft increases
Solution Approach 1:
The patent applies preliminary action by embedding unique identification codes in the photovoltaic panels and storing corresponding codes in the inverter before the system operates. This pre-established pairing creates an authorization mechanism that prevents theft by ensuring only registered panels can power the inverter, addressing the theft vulnerability before it can occur.
Solution Approach 2:
The patent uses copying by creating a digital replica of the unique identification code from the photovoltaic panel and storing it in the inverter's memory. This digital copy enables the inverter to verify the authenticity of connected panels without physical inspection, providing a non-intrusive authentication method that prevents unauthorized operation.
2Reliability
If code verification system is implemented between inverter and photovoltaic panels, then theft prevention is improved, but system complexity increases
Solution Approach 1:
The patent extracts the authentication function from the overall power conversion system by implementing it as a separate, independent code verification process. The inverter's microprocessor independently checks the code match between panel and inverter without interfering with the main power conversion operations, thereby adding theft prevention capability with minimal impact on system complexity.
Solution Approach 2:
The patent applies universality by making the inverter's microprocessor perform multiple functions: it both converts DC to AC power and simultaneously verifies the authentication codes. This multi-functionality approach integrates the theft prevention mechanism into existing components rather than adding separate dedicated hardware, thus reducing overall system complexity.
Data Source
AI summary
A system for generation of electrical power including an inverter connected to a photovoltaic source including a theft prevention and detection feature. A first memory is permanently attached to the photovoltaic source. The first memory is configured to store a first code. A second memory is attached to the inverter. The second memory configured to store a second code. During manufacture or installation of the system, the first code is stored in the first memory attached to the photovoltaic source. The second code based on the first code is stored in the second memory. Prior to operation of the inverter, the first code is compared to the second code and based on the comparison; the generation of the electrical power is enabled or disabled.