Hysteresis Power Supply Control for Peak Load Limiting
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Solution Overview
Problem
Existing electricity consumption systems struggle to manage peak demand without exceeding maximum power limits, leading to power cutoffs, particularly when charging electric vehicles or using high-consumption appliances like electric heaters, which can conflict with other consumption patterns and violate contractual power limits.
Innovation Solution
A power supply control device and method that utilizes two separate circuits and a switching mechanism, controlled by processors, to manage consumption by intermittently powering high-consumption devices like electric vehicle chargers, ensuring compliance with contractual power limits by using hysteresis-based threshold management.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If power supply is provided to high-consumption devices without control, then device operation is enabled, but maximum power limit is exceeded
Solution Approach 1:
The patent applies dynamics by making the power supply state changeable rather than fixed. The switching device dynamically transitions between connected and disconnected states based on real-time consumption monitoring, allowing the system to adapt to varying power demands while respecting the maximum power limit constraint.
Solution Approach 2:
The patent implements feedback through continuous monitoring of power consumption by the first processor and using this information to control the switching device. The system measures consumption, compares it against thresholds, and adjusts the power supply state accordingly, creating a closed-loop control system that prevents maximum power limit violations.
2Power
If power supply is interrupted to respect maximum power limit, then power limit compliance is achieved, but device operation is disrupted
Solution Approach 1:
The patent applies periodic action by implementing intermittent power supply through controlled disconnection and reconnection cycles. The switching device is periodically activated based on consumption thresholds, allowing devices to operate in cycles that respect the maximum power limit while maintaining overall functionality over time.
Solution Approach 2:
The system dynamically adjusts the power supply state based on real-time conditions, transitioning between connected and disconnected states. This dynamic control allows the system to balance power limit compliance with operational continuity, connecting when consumption is low and disconnecting when limits are approached.
3Area of stationary object
If single electrical outlet is used for multiple devices, then space efficiency is improved, but power management complexity increases
Solution Approach 1:
The patent applies universality by designing a power management system that handles multiple devices through a single outlet interface. The control device monitors and manages power distribution to various devices connected through the same outlet, providing multi-functional capability in a unified system.
Solution Approach 2:
The patent introduces an intermediary power management device that sits between the electrical outlet and the connected devices. This intermediary component simplifies the overall system by centralizing the control logic and measurement functions, managing multiple devices through a single point of control rather than requiring individual management for each device.
4Power
If consumption monitoring is continuous, then power limit compliance is ensured, but energy for monitoring increases
Solution Approach 1:
The patent applies continuity of useful action by implementing continuous consumption monitoring that operates throughout the entire power supply cycle. The first processor continuously measures power consumption to ensure accurate detection of threshold violations, maintaining uninterrupted monitoring to guarantee power limit compliance without gaps that could lead to violations.
Solution Approach 2:
The monitoring system is integrated into the power management device itself, allowing the system to self-monitor its own power consumption and that of connected devices. The first processor within the control device performs measurements and control functions without requiring external monitoring infrastructure, making the system self-sufficient.
Data Source
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AI summary
In particular, a method and implementation device for controlling the power supply of a second group of devices comprising at least one device (110) are disclosed, the method being implemented by a device (100) comprising a first processor (101) adapted to perform power consumption measurements, a second processor (102) and a switching element (104) controlled by the second processor to start or stop the power supply of the second group, the method comprising: - obtaining the total power consumption (203) of a first group of devices and the second group of devices over a period of time, - operating in hysteresis with cutting off the power supply if the total consumption exceeds the first threshold and resuming the power supply if the total consumption falls below the second threshold, - repeating the previous steps over successive periods of time.