MLPE Registration via Dynamic Sequence IDs
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Solution Overview
Problem
Photovoltaic power generation systems face communication collisions and difficulty in securing communication periodicity due to random transmission of power generation information by module level power electronics (MLPEs), leading to registration time delays.
Innovation Solution
A method and system for automatically registering sequence IDs to MLPEs by setting maximum waiting times and transmitting registration start signals, allowing for ordered information transmission and reception, with adjusted waiting times based on the number of MLPEs to prevent collisions and reduce registration time.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If MLPEs transmit power generation information randomly, then communication simplicity is maintained, but communication collisions occur and communication periodicity cannot be secured
Solution Approach 1:
The patent implements periodic communication by assigning sequence IDs to MLPEs that determine their transmission timing. Each MLPE transmits information at regular intervals based on its sequence ID, ensuring communication periodicity while avoiding collisions through structured time slots rather than random transmission
Solution Approach 2:
The system dynamically adjusts communication parameters by assigning different sequence IDs to different MLPEs based on their power generation amounts. This dynamic assignment optimizes communication timing for each device while maintaining overall system periodicity and avoiding collisions
2Measurement precision
If sequence ID registration is performed manually, then registration accuracy is ensured, but registration time is excessive
Solution Approach 1:
The system enables automatic sequence ID registration where MLPEs autonomously determine their sequence IDs based on their power generation amounts and communicate them to the inverter. This self-service mechanism eliminates manual intervention while maintaining registration accuracy through structured communication protocols and collision avoidance mechanisms
Solution Approach 2:
The registration process incorporates feedback mechanisms where the inverter receives sequence ID information from MLPEs, validates the information, and provides acknowledgment. This feedback loop ensures registration accuracy by verifying each MLPE's sequence ID assignment while automating the entire process to reduce registration time
3Quantity of substance
If maximum waiting time is extended to accommodate more MLPEs, then all MLPEs can be registered, but registration time delay increases
Solution Approach 1:
The patent segments the registration process by dividing MLPEs into groups based on their sequence IDs and power generation amounts. Instead of waiting for all MLPEs simultaneously, the system processes registrations in structured segments, allowing efficient handling of multiple MLPEs without extending the overall waiting time excessively
Data Source
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AI summary
According to an embodiment of the present disclosure, there is provided a photovoltaic power generation method including an operation of setting a first maximum waiting time and transmitting a registration start signal and the first maximum waiting time to one or more module level power electronics (MLPEs), an operation of receiving unique information from a first MLPE among the one or more MLPEs, an operation of assigning a first sequence ID to the unique information of the first MLPE, and an operation of setting a second maximum waiting time and transmitting the registration start signal and the second maximum waiting time to the one or more MLPEs.