Communicating Transfer Switch for Surge-Protected Power Source Switching
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Solution Overview
Problem
Existing electric power systems face challenges such as electrical surges damaging electronic devices, difficulty in disconnecting power during emergencies, and the need for remote control and configuration of multi-source power systems.
Innovation Solution
An intermediate disconnect section is introduced for mounting on a meter base, featuring a platform with source and load couplings, a switch for selective coupling, and a switching mechanism allowing manual operation. This section includes a surge suppressor and is designed for use with both utility and alternate power sources, enabling quick configuration changes and remote control.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If local surge suppressors are used to protect electronic devices, then protection against electrical surges is improved, but device complexity and space requirements increase
Solution Approach 1:
The patent combines the surge suppressor function with the transfer switch housing, integrating protection capabilities into the existing power distribution infrastructure. This eliminates the need for separate local surge suppressors at each outlet while maintaining comprehensive protection across all connected devices.
Solution Approach 2:
The transfer switch is designed to perform multiple functions: power source switching, surge suppression, and communication/monitoring. By making the transfer switch multi-functional, the patent eliminates the need for separate dedicated surge suppressor devices, reducing overall system complexity.
2Reliability
If surge suppressors are installed in breaker panels, then protection against electrical surges is improved, but installation time and complexity increase
Solution Approach 1:
The surge suppressor is integrated into the transfer switch assembly, which is already positioned in the breaker panel. This combination eliminates the need for separate surge suppressor installation steps, reducing installation time while maintaining comprehensive surge protection.
3Ease of operation
If manual disconnect switches are installed in breaker panels, then ability to disconnect power during emergencies is improved, but finding the disconnect switch becomes more difficult
Solution Approach 1:
The transfer switch incorporates visual indicators (such as LEDs or color-coded components) that change state to indicate the current power source and switch position. This makes the disconnect function immediately visible and identifiable during emergencies, eliminating the problem of难以 finding the switch.
Solution Approach 2:
The transfer switch incorporates visual indicators (such as LEDs or color-coded components) that change state to indicate the current power source and switch position. This makes the disconnect function immediately visible and identifiable during emergencies, eliminating the problem of难以 finding the switch.
4Productivity
If automatic switching between power sources is implemented, then operational continuity is improved, but loss of user control and awareness decreases
Solution Approach 1:
The transfer switch system incorporates communication capabilities that provide real-time feedback to the user about the current power source status, switch position, and system health. This feedback mechanism maintains user awareness and control while allowing automatic switching to operate seamlessly in the background.
Data Source
AI summary
An apparatus for selectively coupling a load to a grid power source and an inverter that is fed electric power by an alternate power source includes a first node coupled to the load. A grid sensor senses a state of the grid power source. A grid relay couples the grid power source to the first node when in a closed state and decouples the grid power source from the first node when in an open state. An inverter relay couples the inverter to the first node when in a closed state and decouples the inverter from the first node when in an open state. A controller is programmed to: cause the grid relay and the inverter relay to closed when the grid sensor indicates available grid power and cause the grid relay to open when grid power is not available. A communications circuit senses a current state of the controller and wirelessly communicates a change of state of a selected one of the grid sensor and the controller to a remote device.