Invention Grant
- Patent Title: Emergency back-up power system for traction elevators
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Application No.: US15427098Application Date: 2017-02-08
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Publication No.: US10432020B2Publication Date: 2019-10-01
- Inventor: James C. Hall
- Applicant: Reynolds & Reynolds Electronics, Inc.
- Applicant Address: US PA Bethlehem
- Assignee: Reynolds & Reynolds Electronics, Inc.
- Current Assignee: Reynolds & Reynolds Electronics, Inc.
- Current Assignee Address: US PA Bethlehem
- Agent Wendy W. Koba
- Main IPC: B66B1/06
- IPC: B66B1/06 ; H02J9/06 ; B66B5/02 ; B66B11/04 ; H02M5/458

Abstract:
An emergency power supply for a traction elevator system utilizes a microprocessor-based control arrangement with pulse-width modulator technology to create an efficient, cost-effective back-up power system for a traction elevator. The microprocessor-based control arrangement is used to sense a phase irregularity in the power supply. Upon sensing the phase irregularity, the microprocessor-based control arrangement disconnects the elevator system from the main power source and then generates a control signal to initiate the supply of back-up power. Once the elevator electrical system has been stabilized, the elevator control system will sense that recovery has occurred and will then provide an appropriate speed and direction command to the traction motor drive system.
Public/Granted literature
- US20170149275A1 Emergency Back-Up Power System For Traction Elevators Public/Granted day:2017-05-25
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