The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Aug. 26, 2014
Filed:
Nov. 30, 2010
Janne Salomäki, Hyvinkää, FI;
Mikko Porma, Vantaa, FI;
Janne Salomäki, Hyvinkää, FI;
Mikko Porma, Vantaa, FI;
Konecranes PLC, Hyvinkää, FI;
Abstract
A motor control system for a hoist drive having an electric motor operationally connected to a hoisting member for hoisting a load, the motor control system being adapted to generate a final angular frequency reference (ω*) for control of the electric motor, the motor control system comprising a power limiter means adapted to generate a correction term (ω) for angular frequency reference. The power limiter means comprises an integrating controller means, the power limiter means being adapted to generate the correction term (ω) for angular frequency reference using output signal Iof the integrating controller means, initial data of the integrating controller means including information relating to actual value of the power of the electric motor and a power related limit value of the electric motor.