SSCB Handle and Door Interlock for Arc Flash Risk Reduction
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Existing operating structures and systems are incompatible with solid-state circuit breakers (SSCBs), which do not use mechanical switching, leading to challenges in handling and maintaining these devices safely and efficiently.
Innovation Solution
A system and method that includes a housing with a door sensor and handle position sensor, coupled with a secondary device to adjust the operating state of SSCBs based on these signals, ensuring safe and efficient operation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Object-affected harmful factors
If solid-state circuit breakers are used without mechanical switching, then arc flash risk is reduced, but compatibility with existing operating structures deteriorates
Solution Approach 1:
The patent replaces mechanical switching components with solid-state electronic switching devices (such as IGBTs or MOSFETs) that can open and close circuits without mechanical contact. This substitution eliminates arc flash risks associated with mechanical switches while maintaining circuit breaker functionality through electronic control mechanisms that respond to overcurrent and fault conditions.
Solution Approach 2:
The patent introduces a control system with microprocessors, sensors, and communication interfaces as intermediaries between the solid-state circuit breakers and existing operating structures. This intermediary layer enables compatibility with traditional handle operations, door sensors, and secondary devices by translating mechanical inputs into electronic control signals for the solid-state switches.
2Volume of stationary object
If solid-state circuit breakers are integrated into existing enclosures, then enclosure size is reduced, but integration complexity increases
Solution Approach 1:
The patent combines multiple functions including circuit protection, handling operation, door monitoring, and control logic into a single integrated solid-state circuit breaker unit. By merging these previously separate components into one cohesive device, the overall enclosure size is reduced while the internal integration handles the complexity through unified design architecture.
Solution Approach 2:
The solid-state circuit breaker is designed with multi-functionality to perform various roles: it acts as a protective device, responds to handle positions, monitors door status, and interfaces with secondary devices. This universal design allows a single component to replace multiple specialized components, reducing enclosure space requirements while managing complexity through consolidated functionality.
Data Source
AI summary
A system includes any number of solid-state circuit breakers that couple between a power supply and an electrical load. The system also includes a housing and the solid-state circuit breakers are disposed within the housing. The housing includes a door sensor that generates a first signal indicative of a position of a door of the housing. The housing also includes an indicator that generates a second signal indicative of a position of a handle of the housing. The system also includes a secondary device communicatively coupled to the solid-state circuit breakers, the door sensor, and the indicator. The secondary device receives the first signal and the second signal and generates an instruction to adjust an operating state of the solid-state circuit breakers based on the first signal and the second signal.