Integrated PV Disconnect Inverter for Unified Shutdown Control
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Solution Overview
Problem
The existing power system ecosystem is fragmented, making installation and control complex due to multiple components from different entities that need to be combined, and existing systems lack a centralized solution for facilitating multiple disconnect functions such as Rapid Shutdown, PV Disconnect, and ESS Disconnect.
Innovation Solution
An integrated power system with a combined inverter that includes a bi-directional power connection, an integrated Photovoltaic (PV) disconnect switch, and a microcontroller to coordinate multiple disconnect actions via a single switch, eliminating the need for field wiring and providing a centralized control point for disconnect functions.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If multiple separate disconnect components are used to achieve Rapid Shutdown, PV Disconnect, and ESS Disconnect functions, then the disconnect functions are provided, but the installation complexity and system control complexity increase
Solution Approach 1:
The patent combines multiple separate disconnect components (Rapid Shutdown, PV Disconnect, and ESS Disconnect) into a single integrated inverter unit. This merging eliminates the need for multiple separate components and their associated field wiring, directly reducing installation complexity while maintaining all required disconnect functions.
Solution Approach 2:
The integrated inverter is designed to perform multiple disconnect functions simultaneously through a single device. The inverter can execute Rapid Shutdown, PV Disconnect, and ESS Disconnect operations, making it a universal solution that replaces multiple specialized components and simplifies system architecture.
2Adaptability or versatility
If multiple separate disconnect components are used, then the disconnect functions are provided, but the control complexity and number of components increase
Solution Approach 1:
By merging the control logic for multiple disconnect functions into a single integrated inverter, the system reduces control complexity. The inverter's centralized control architecture manages all disconnect operations through unified logic, eliminating the need for separate control systems for each disconnect function.
3Adaptability or versatility
If multiple separate disconnect components are used, then the disconnect functions are provided, but the installation time increases
Solution Approach 1:
The integration of multiple disconnect functions into a single inverter unit eliminates the need for installing and wiring multiple separate components. This significantly reduces installation time as the inverter comes pre-configured with all necessary disconnect capabilities, requiring minimal on-site assembly and wiring work.
4Adaptability or versatility
If the power system uses multiple components from different entities, then the system provides comprehensive functionality, but the system fragmentation and integration difficulty increase
Solution Approach 1:
The patent consolidates multiple components from different entities into a single integrated inverter platform. This merging approach maintains comprehensive system functionality while eliminating the fragmentation issues associated with combining separate components, as all functions are harmoniously integrated within one unified device.
Data Source
AI summary
A power system includes an integrated energy storage system (ESS). It further includes a photovoltaic (PV) source. It further includes an integrated inverter having power connections to both the energy storage system and the photovoltaic source. The inverter includes an integrated PV disconnect switch.