PV Array Bypass Conductor Layout for East-West Module Strings
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Solution Overview
Problem
Existing PV arrays with east-west configurations face inefficiencies due to non-uniform solar radiation, leading to reduced electrical output and hazards from external cabling, which can interfere with storage, deployment, and operation.
Innovation Solution
A PV array design with integrated by-pass conductors within each module allows electrical connection between east and west facing modules without external cabling, ensuring efficient current flow and reducing hazards.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If external cabling is used to connect PV modules in east-west configurations, then electrical connections can be established, but safety hazards increase and ease of operation deteriorates
Solution Approach 1:
The patent integrates the electrical connection function directly into the PV module structure by incorporating conductive rails and connectors within the module housing. This merging of the connection function into the module itself eliminates the need for separate external cabling, thereby maintaining electrical connection reliability while removing the safety hazards associated with exposed external cables.
Solution Approach 2:
The patent introduces intermediate connection components (conductive rails and integrated connectors) that serve as mediators between PV modules. These intermediaries are safely contained within the module structure, providing reliable electrical connections without exposing hazardous conductors to the external environment where they could create safety risks.
2Ease of operation
If PV modules are connected with external cabling, then electrical strings can be formed, but device complexity increases and ease of manufacture deteriorates
Solution Approach 1:
By integrating conductive rails and connectors directly into the PV module housing, the patent combines the electrical connection function with the module structure itself. This eliminates the need for separate external cabling systems, thereby reducing device complexity while maintaining ease of operation through simplified module-to-module connections.
Solution Approach 2:
The integrated conductive rails and connectors serve multiple functions: they provide structural support within the module, enable electrical connections, and facilitate modular assembly. This multi-functionality reduces the number of separate components needed, simplifying both the device complexity and manufacturing processes.
3Device complexity
If PV modules are fixed at a compromise tilt angle, then installation complexity is reduced, but energy generation efficiency deteriorates
Solution Approach 1:
The patent enables dynamic adjustment of PV module tilt angles through an adjustable mounting mechanism. This allows the system to transition from fixed compromise angles to optimized angles that maximize energy generation, while the modular design keeps the mounting structure complexity manageable through standardized adjustment components.
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
Maximizes electrical output by allowing continuous current collection regardless of solar orientation and eliminates hazards associated with external cabling.
Implementation Method 1
PV modules use solar cells, which are well known devices that convert light energy (electromagnetic or solar radiation) directly into usable electric energy or current via a photoelectric effect
Data Source
AI summary
A PV array (10) comprising multiple PV modules (11, 12) that each have a first and second pairs of spaced apart terminals (28, 40), with the first pair of spaced apart terminals (28) being in electrical connection with the PV cells of the PV modules (11, 12). A by-pass conductor (30) connects the second pair of spaced apart terminals (40) and enables current to pass through the PV modules (11, 12) between the second pair of spaced apart terminals (40). The second pair of terminals (40) of a first PV module (11) are each connected electrically to a terminal (28) of the first pair of terminals (28) of two adjacent PV modules to which the first PV module is connected. The by-pass conductor (30) of the first PV module facilitates travel of electrical current from the first PV module to a second PV module, by connection of the first terminals (28) of the first PV module (11) to the second terminals (40) of the second PV module (12).