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Method and system for self-managing the power consumption of domestic appliances Disclosure Number: IPCOM000202233D
Publication Date: 2010-Dec-10
Document File: 4 page(s) / 37K

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A method and a system is disclosed for managing the power consumption of electric home applicances based on a distributed logic that does not require any central processing unit for deciding which appliance has to modify its power consumption and in which moment.

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Method and system for self-managing the power consumption of domestic appliances

    Electrical power in houses or buildings is subject to restrictions in usage due to contract terms. Contracts provide for a power usage threshold, so that when it's exceeded for a sensible amount of time, the house electricity meter automatically disconnects the line from the public power network.

    Currently some new generation electrical devices are available that mitigate the electrical power consumption in the sense that they are able to regulate themselves to consume just the amount of power that is needed to reach the goal they've been programmed for. Exemplary new generation electrical devices comprise the new generation of air conditioners called "Inverter".

    In a house, however, different types of electrical devices can be found and often the majority does not provide this capability. For some of them it is even not possible to do it (e.g. a blow dryer, a battery charger and so on).

    Moreover, even if all of the devices implemented such feature but the electrical power need in the house exceeds for a certain period of time the provided threshold, the electrical

power meter will still disconnect the line from the public power network.

    Accordingly, there is a need for a system that makes the electrical system as a whole self-regulating so that even if the electrical need is the one described before, it's able to automatically adjust the power consumption of all or part of the plugged electrical devices and keep the total electrical power consumption below the contractual threshold.

    There exists systems, as the one described in the Us patent publication 2003/0225483 A1 which aim at optimizing the power usage of a set of domestic appliances with the main

purpose of reducing the overall costs and at avoiding exceeding the contractual maximum

allowed value. All of them are generally based on the presence of a coordination engine that is in charge of handling the shutdown/


adjusting the actual power consumption of the appliances.

    Currently no power management system exist that is able to self regulate itself without the need of a central regulator module. One of the main advantage of such kind of systems would be its simplicity and consequently lower implementation costs. Additionally it would be more reliable from a dependability point of view since there would not be any single point of failure in the architecture.

    It is an object of the current invention to provide a method and a system to address the above issues leveraging electrical devices that are able to modify their consumption (we'll call them "smart appliances").

    The solution is based on a plugin that is applied to the house or building electric meter to allow all the enabled devices to continuously read the actual power consumption of the home electrical network. Based on such parameter smart devices are able to increase/decrease their power consumption with the intent of not exceeding...