Self-operable reserve power system for an elevator system
First Claim
1. Elevator system, which elevator system is connected to an internal electricity distribution network of the building, which selectively connects between a public electricity distribution network and a reserve power appliance, and which elevator system comprises:
- at least one elevator;
an elevator control system;
an elevator motor;
a frequency converter fitted to supply the elevator motor;
an internal electricity distribution network to control the at least one elevator such that when the internal electricity distribution network of the building is connected to the reserve power appliance;
wherein the elevator system can be used both when the internal electricity distribution network of the building is connected to the public electricity distribution network and when the internal electricity distribution network of the building is connected to a reserve power appliance andwherein the frequency converter will operate to manage the power supplied by the elevator system towards the internal electricity distribution network in direct relation to the demand capacity for electric power consumption of the internal electricity distribution network, such that total power supply towards the internal electricity distribution network does not exceed the power limit Pa that can be set for the total power supply towards the internal electricity distribution network, and in order to avoid a rise in the voltage of the internal distribution network.
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Accused Products
Abstract
A power control system is operable for controlling and balancing the generation and/or consumption of electrical power through an internal electricity distribution network connected with at least one electrically driven elevator system. The elevator system is connected to the internal electricity distribution network of a particular building, which can further be connected either to the external public electricity distribution network, or to a reserve power appliance. An elevator system includes at least one elevator, an elevator control system, an elevator motor, a frequency convertor fitted to supply the elevator motor which may be in operation when provided with electricity through an external public electricity distribution network, or during disruption of power. A reserve power appliance provides the required electricity to the elevator system, or the elevator system generates its own sustainable electricity, through active management of its power generation and consumption limits over the internal electricity distribution network.
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Citations
15 Claims
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1. Elevator system, which elevator system is connected to an internal electricity distribution network of the building, which selectively connects between a public electricity distribution network and a reserve power appliance, and which elevator system comprises:
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at least one elevator; an elevator control system; an elevator motor; a frequency converter fitted to supply the elevator motor; an internal electricity distribution network to control the at least one elevator such that when the internal electricity distribution network of the building is connected to the reserve power appliance; wherein the elevator system can be used both when the internal electricity distribution network of the building is connected to the public electricity distribution network and when the internal electricity distribution network of the building is connected to a reserve power appliance and wherein the frequency converter will operate to manage the power supplied by the elevator system towards the internal electricity distribution network in direct relation to the demand capacity for electric power consumption of the internal electricity distribution network, such that total power supply towards the internal electricity distribution network does not exceed the power limit Pa that can be set for the total power supply towards the internal electricity distribution network, and in order to avoid a rise in the voltage of the internal distribution network. - View Dependent Claims (2, 3, 4, 5, 6, 11, 12, 13, 14, 15)
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7. Method for controlling elevators in an elevator system, which elevator system is connected to an internal electricity distribution network of the building, which selectively connects between a public electricity distribution network and a reserve power appliance, and which elevator control system comprises:
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providing at least one elevator operable with the control system; providing an elevator motor operable with the control system; providing a frequency converter fitted to supply the elevator motor operable with the control system; providing an internal electricity distribution to control the at least one elevator such that when the internal electricity distribution network of the building is connected to the reserve power appliance; wherein the elevator control system can be used both when the internal electricity distribution network of the building is connected to the public electricity distribution network and when the internal electricity distribution network of the building is connected to a reserve power appliance and wherein the frequency converter will operate to manage the internal electricity distribution network of the building being connected to a reserve power system when the power supplied by the elevator system towards the internal electricity distribution network of the building is smaller than the power limit Pa that can be set for the internal electricity distribution network. - View Dependent Claims (8, 9, 10)
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Specification