The application of adjustable frequency drives to electric overhead cranes

Author

Backstrand, Jon E.

Author_Institution

Harnischfeger Corp., West Milwaukee, WI, USA

fYear

1992

fDate

4-9 Oct. 1992

Firstpage

1986

Abstract

The application of a pulse width modulation (PWM) adjustable frequency (AF) inverter drive, SMARTORQUE that was made to satisfy the special requirements of cranes, hoists, and other material handling equipment is discussed. The requirements that a motor control system must satisfy to be suitable for any crane and hoist applications with regard to load handling ability, thermal capacity, maintainability, endurance, environmental compatibility, size, and cost are examined. Features common to all AF drives that tend to give them a leading edge over all predecessors, as well as the particular advantages of the SMARTORQUE drive, including its intelligent software, are examined. Future trends in variable-frequency drives are considered.<>

Keywords

cranes; electric drives; electric motors; intelligent control; machine control; power engineering computing; PWM; SMARTORQUE; adjustable frequency drives; electric overhead cranes; endurance; environmental compatibility; hoists; intelligent software; inverter drive; maintainability; material handling equipment; motor control system; pulse width modulation; thermal capacity; AC motors; Cranes; DC motors; Frequency; Microprocessors; Motor drives; Pulse width modulation inverters; Safety; Velocity control; Wounds;

fLanguage

English

Publisher

ieee

Conference_Titel

Industry Applications Society Annual Meeting, 1992., Conference Record of the 1992 IEEE

Conference_Location

Houston, TX, USA

Print_ISBN

0-7803-0635-X

Type

conf

DOI

10.1109/IAS.1992.244208

Filename

244208