Line current and energy storage control for an elevator drive

Number of patents in Portfolio can not be more than 2000

United States of America

PATENT NO 8584807
SERIAL NO

13059100

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ATTORNEY / AGENT: (SPONSORED)

Importance

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Abstract

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Power distribution is managed between a regenerative drive (10) connected to an elevator hoist motor (12), and a primary power supply (20) and electrical energy storage (EES) system (36) connected to the regenerative drive. A state-of-charge (SOC) of the EES system and a primary current flow between the primary power supply and the regenerative drive are measured. A direction and magnitude of secondary current flow between the EES system and the regenerative drive is then controlled as a function of the primary current flow and the SOC of the EES system. SOC of the EES system is maintained in a limited range except as necessary to maintain primary current flow below a threshold current.

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Patent Owner(s)

  • OTIS ELEVATOR COMPANY

International Classification(s)

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Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Veronesi, William A Hartford, US 71 887

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