MANAGEMENT OF POWER FROM MULTIPLE SOURCES BASED ON ELEVATOR USAGE PATTERNS
First Claim
1. A method for managing power distribution in an elevator system including an elevator hoist motor, a primary power supply, and an energy storage system, the method comprising:
- establishing a predicted usage pattern based at least in part on hoist motor demand data;
setting a target storage state for the energy storage system based on the predicted usage pattern; and
controlling power exchanged between the hoist motor, the primary power supply, and the energy storage system to address power demand of the hoist motor and to maintain the storage state of the energy storage system at about the target storage state.
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Accused Products
Abstract
Power distribution is managed in an elevator system including an elevator hoist motor (12), a primary power supply (20), and—an energy storage system (32). A predicted usage pattern for the hoist motor is established based on past hoist motor power demand in the elevator system or in similar elevator systems in similar buildings. A target storage state for the energy storage system is then set based on the predicted usage pattern. Power exchanged between the hoist motor, the primary power supply, and the energy storage system is controlled to address power demand of the hoist motor and to maintain the storage state of the energy storage system at about the target storage state.
25 Citations
20 Claims
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1. A method for managing power distribution in an elevator system including an elevator hoist motor, a primary power supply, and an energy storage system, the method comprising:
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establishing a predicted usage pattern based at least in part on hoist motor demand data; setting a target storage state for the energy storage system based on the predicted usage pattern; and controlling power exchanged between the hoist motor, the primary power supply, and the energy storage system to address power demand of the hoist motor and to maintain the storage state of the energy storage system at about the target storage state. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8)
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9. A method for addressing power demand of an hoist motor with a primary power supply and an energy storage system, the method comprising:
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monitoring usage characteristics related to the hoist motor demand; correlating the usage characteristics with a stored pattern of usage; setting a target storage state for the energy storage system based on the usage characteristics and the pattern of usage; and controlling power exchanged between the hoist motor, the primary power supply, and the energy storage system to address power demand of the hoist motor and to maintain the storage state of the energy storage system at about the target storage state. - View Dependent Claims (10, 11, 12, 13, 14, 15)
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16. An elevator system comprising:
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an elevator hoist motor operable to control movement of an elevator car; an elevator power system connected to the elevator hoist motor an operable to address power demand of the elevator hoist motor, the elevator power system connected to receive power from a primary power supply and including an energy storage system; and a controller operable to set a target storage state for the energy storage system based on current usage characteristics and a predicted usage pattern of the elevator hoist motor, wherein the controller is further operable to control power exchanged between the hoist motor, the primary power supply, and the energy storage system to address power demand of the hoist motor and to maintain the storage state of the energy storage system at about the target storage state. - View Dependent Claims (17, 18, 19, 20)
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Specification