Power management in an elevator system

US12312211B2 · kind B2 · utility

Assignee

• OTIS ELEVATOR COMPANY · US

Inventors

• Virgilio Valdivia Guerrero · Roquetas de Mar, ES
• Ismail Agirman · Southington, US
• Daniel Diaz-Lopez · Madrid, ES
• Mario Sanz Abia · Valladolid, ES
• Stephan Glessner · Berlin, DE
• Herbert Horbrugger · Berlin, DE

Key dates

• Filing date: Oct 16, 2019
• Grant date: May 27, 2025
• Expiry date: Feb 3, 2044

Classification

• Technology area (CPC H): Electricity
• CPC primary: H02M1/0095
• WIPO field: Electrical machinery, apparatus, energy
• WIPO sector: Electrical engineering

Abstract

A power management system for an elevator system. A power management system for an elevator system includes a power converter having three input terminals, two of the three input terminals coupled to a main power source for supplying single-phase AC power to the power management system, the power converter configured to convert the AC power from the main power source into DC power on a common DC bus, a secondary power source for supplying DC power to the common DC bus, a power inverter configured to invert the DC power on the common DC bus into AC output power for driving an electric motor of the elevator system, and a dynamic braking resistor which is coupled between a third input terminal among the three input terminals of the three-phase power converter and the common DC bus.