Solar Device DC Converter MPPT Tracking via Data Cable
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
The existing solar devices face inefficiencies in energy conversion due to low generation efficiency of solar cells, high costs associated with communication methods, and complex configurations that increase installation and maintenance challenges.
Innovation Solution
A solar device configuration that uses a DC cable line to transmit data between a solar module and a DC/AC converter, incorporating a DC converter to detect and output maximum power point voltage, an interface unit to transmit data, a data combiner to remove DC voltage offset, and a data controller to track the maximum power point, simplifying the system and reducing costs.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If wireless communication device and relay are used for data transmission, then communication function is achieved, but device complexity and cost increase
Solution Approach 1:
The existing DC cable line used solely for power transmission is made to serve dual purposes: power transmission and data communication. The DC converter utilizes the bidirectional communication capability of the DC cable line to exchange control and status data, eliminating the need for separate wireless communication devices and relays.
Solution Approach 2:
The power transmission function and data communication function are merged into a single DC cable line. The DC converter acts as both a power conversion device and a communication interface, combining multiple functions into one component to reduce overall system complexity.
2Ease of operation
If wired communication with communication-dedicated cable line is used, then data transmission is achieved, but installation difficulty and maintenance complexity increase
Solution Approach 1:
The DC cable line that is already installed for power transmission is utilized for data communication as well. This eliminates the need for separate communication cable installation, reducing installation complexity and maintenance burden while achieving reliable data transmission between the solar module and DC converter.
3Measurement precision
If many parts such as current and voltage value detectors and A/D converters are used for maximum power tracking, then tracking accuracy is improved, but device complexity and cost increase
Solution Approach 1:
The DC converter integrates multiple measurement and control functions into a single device. It combines voltage detection, current detection, A/D conversion, and maximum power point tracking algorithms within one unit, reducing the number of separate components while maintaining tracking accuracy through coordinated operation of integrated subsystems.
Solution Approach 2:
The DC converter performs self-measurement and self-control for maximum power point tracking. By integrating the detection and control functions within the DC converter itself, the system eliminates the need for separate external detection devices and complex wiring, reducing overall device complexity while achieving accurate power tracking.
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
This configuration enables efficient tracking of the maximum power point, reduces system complexity and costs, and facilitates easier installation and maintenance by simplifying the DC converter configuration and using a DC cable line for data transmission.
Implementation Method 1
a solar module configured to absorb solar energy to convert the solar energy to electrical energy
Data Source
AI summary
A solar device is provided. The solar device includes a solar module configured to absorb solar energy to convert the solar energy to electrical energy, a DC converter configured to detect an input voltage output from the solar module and outputs a DC voltage corresponding to a maximum power point through the detected input voltage, an interface unit configured to transmit data including the input voltage detected from the DC converter and the DC voltage corresponding to the maximum power point, a data combiner configured to combine and transmit data on the solar module with the data received from the interface unit, a data synthesizer configured to remove a DC voltage offset from the data received from the data combiner, and a data controller configured to track a maximum power point using data from which the DC voltage offset has been removed.