Inverter Connector with Integrated DC Breaking Element
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Solution Overview
Problem
In pluggable inverters, the DC breaking element is typically arranged within the electronic part, leading to residual voltage on connections between connectors and sockets, resulting in increased contact points and transition resistances, which cause line losses and require complex wiring and assembly.
Innovation Solution
The DC breaking element is integrated into the connector assembly with the connector block and connector, and an actuation element is positioned outside to mechanically or electronically control the connection, minimizing contact points and eliminating the need for internal wiring.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If the DC breaking element is arranged within the electronic part, then the inverter can be disconnected for maintenance, but residual voltage remains on the connections between connectors and sockets, causing safety issues and increased contact points
Solution Approach 1:
The DC breaking element is extracted from the electronic part and integrated into the connector assembly instead. This allows the breaking element to be positioned where it can directly interrupt the DC connection between the fixture and electronic part, ensuring complete voltage disconnection while maintaining ease of maintenance access.
Solution Approach 2:
The connector assembly serves as an intermediary structure that houses the DC breaking element between the connector block and connector. This intermediary position allows the breaking element to effectively isolate voltage while the connector sockets remain accessible for plugging and unplugging operations.
2Power
If multiple connection lines are used to connect the DC voltage side and electronic part, then the inverter functions properly, but the number of contact points and transition resistances increases, causing line losses
Solution Approach 1:
Multiple connection lines and their associated contact points are merged into a single integrated connector assembly. The connector block and connector with integrated DC breaking element consolidate multiple electrical connections into one unified structure, reducing the number of transition points and minimizing line losses.
3Reliability
If the DC breaking element is wired manually via connecting lines, then the breaking function is achieved, but the assembly complexity and wiring errors increase
Solution Approach 1:
The DC breaking element is merged with the connector assembly as an integrated unit rather than being separately wired. This integration eliminates manual wiring of connecting lines and reduces assembly complexity while maintaining the DC breaking function.
Solution Approach 2:
The connector assembly is designed to be self-contained with the DC breaking element built-in, eliminating the need for external wiring and manual assembly of connecting lines. The breaking function is achieved through the integrated structure itself rather than through separate wiring operations.
Data Source
AI summary
An inverter with a connector element has a fixture with a connector element arranged thereupon and an electronic part which can be plugged into the connector element, together forming the inverter. The connector element is formed by a connector block for connecting at least one solar module, and at least one connector for the electronic part, wherein corresponding connector sockets for pluggably connecting to the connectors are arranged on the electronic part, and the inverter is formed by a DC breaking element. To allow solar modules to be separated easily, the connector element is composed of an assembly wherein the connector block and the connector are arranged at least on one side and a DC breaking element is arranged between them. An actuation element of the DC breaking element is arranged outside the assembly to mechanically or electronically activate and deactivate the connection between the connector block and the connector.