Household Appliance Peak Power Control via Remote Rate Requests
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Solution Overview
Problem
Conventional peak electric power cut systems for household appliances, such as air-conditioners, struggle to promptly respond to peak power consumption demands and effectively reduce power consumption, as they rely on shifting set temperatures without clear control over actual power usage.
Innovation Solution
A household electric system comprising a receiving unit, a drive unit, and a control unit that allows for remote control of appliances like air-conditioners to cut power consumption based on requested rates and maintain room temperatures within set ranges, using a mobile terminal and gateway device to communicate and control multiple appliances.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Loss of energy
If the set temperature is shifted up to reduce power consumption, then power consumption is reduced, but the response speed to peak power demand is slow
Solution Approach 1:
The system performs preliminary actions by storing operation history and temperature data before peak demand occurs. When peak demand is detected, the system quickly retrieves pre-analyzed power consumption patterns and applies predetermined control strategies, enabling rapid response without real-time calculation delays
Solution Approach 2:
The system implements feedback mechanisms by continuously monitoring actual power consumption, comparing it with target values, and adjusting operation parameters in real-time. The control unit receives feedback from power consumption detection and temperature sensors, enabling dynamic adjustment that achieves both energy reduction and fast response to peak demands
2Loss of energy
If the set temperature is shifted up to reduce power consumption, then power consumption is reduced, but the output temperature control precision deteriorates
Solution Approach 1:
The system applies dynamics by making the temperature control strategy adaptive rather than static. The control unit dynamically adjusts the set temperature based on real-time conditions, operation history, and power consumption patterns. This allows the system to maintain high temperature precision during normal operation while achieving power reduction during peak demand periods through controlled temperature adjustments
Solution Approach 2:
The system changes parameters by adjusting the set temperature dynamically based on power consumption conditions. Instead of a fixed temperature shift, the control unit modifies temperature parameters adaptively, considering operation history and current load conditions, thereby maintaining temperature precision while achieving power consumption reduction
3Loss of energy
If the air-conditioning operation is controlled to maintain temperature within a range lower than upper-limit and higher than lower-limit, then power consumption is reduced, but the temperature control complexity increases
Solution Approach 1:
The system segments the temperature control into distinct operational modes: normal operation mode and peak demand mode. In normal mode, the system maintains temperature within the comfortable range (between lower and upper limits). In peak demand mode, it transitions to a power-saving range (lower than upper-limit and higher than lower-limit). This segmentation simplifies control logic while achieving energy reduction
Data Source
AI summary
A household electric appliance and a household electric system are provided which are capable of quickly responding to the electric power demand in which the peak cut of the power consumption is requested. The household electric appliance comprises: a receiving unit that receives a request for a peak cut of power consumption at a predetermined rate from a remote controller and a mobile terminal; a drive unit that drives a power-consuming object to be driven; and a control unit that controls an action of the drive unit. The control unit, in the case of reception of the peak cut request from the remote controller or the mobile terminal, controls the action of the drive unit so as to cut a maximum value of the power consumption within the appliance based on the requested rate.