Portable Generator Load Shedding With Priority Outlets
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Solution Overview
Problem
Portable generators lack effective load shedding capabilities, leading to inconvenient and potentially harmful power outages when reaching overload, as they do not allow users to prioritize power distribution like permanent generators do, causing issues with perishable items and comfort in homes.
Innovation Solution
A portable power distribution system with a priority system that allows users to assign circuit priorities, automatically shedding power from lower-priority outlets first, using a portable generator with multiple outlets and visual indicators like LED lights to manage power distribution, ensuring critical devices remain powered.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If circuit breakers are used to protect against overload, then safety is improved, but power is completely terminated to the circuit until manual reset, causing extended outages and potential damage to connected devices
Solution Approach 1:
The patent segments the single circuit breaker protection into multiple independent priority-based circuits. Each circuit can be independently controlled and shed based on priority levels, so that when overload occurs, only lower priority circuits are terminated while higher priority circuits remain powered. This eliminates the all-or-nothing shutdown of traditional circuit breakers.
Solution Approach 2:
The system dynamically adjusts power distribution based on real-time load conditions and priority assignments. When overload is detected, the system automatically and dynamically sheds load from lower priority circuits while maintaining power to higher priority circuits, providing adaptive protection rather than static circuit breaker tripping.
2Ease of operation
If permanent generators with load shedding are used, then power prioritization is improved, but portability and ease of relocation are reduced
Solution Approach 1:
The patent integrates load shedding functionality into a portable generator platform, making the system universal. The generator combines portability features (lightweight design, mobility handles) with sophisticated load shedding capabilities that were previously only available in permanent installations. This allows the same device to serve both mobile power needs and intelligent power management functions.
3Adaptability or versatility
If multiple devices are connected to portable generator outlets, then power distribution capability is improved, but overload risk increases, causing total power termination
Solution Approach 1:
The patent assigns different priority qualities to different outlets or circuit groups based on the importance of connected devices. Critical devices (refrigerators, medical equipment) are assigned high priority while non-critical devices (lights, entertainment systems) are assigned low priority. This localized quality differentiation allows the system to maintain power to essential devices even when total load approaches generator capacity.
Solution Approach 2:
The system continuously monitors total load across all outlets and provides feedback control. When the sum of all device draws approaches the generator's maximum capacity, the system automatically sheds load from lower priority circuits to maintain reliable operation. This closed-loop feedback prevents overload conditions that would otherwise cause total power termination.
Data Source
AI summary
A portable power distribution system is provided that may include a portable generator and/or a power strip having a plurality of circuit outlets configured to provide power to a plurality of devices. The plurality of circuit outlets are configured to provide power to the devices in an order of priority. For instance, the system may include at least two outlets, with a first outlet taking priority over the second outlet, meaning that power to the second outlet is terminated if a maximum power output is exceeded, while power to the first outlet is maintained. Additional outlets may be provided that are also prioritized, such that the most important devices continue to have power supply, whereas power to less important devices is terminated if the maximum power outlet is exceeded.