Insulation systems available for PWM inverter fed motors for low voltage pulp and paper applications

Author

Bonnett, Austin H.

Author_Institution

US Electrical Motors, Emerson Electr. Co., St. Louis, MO, USA

fYear

1997

fDate

16-20 June 1997

Firstpage

17

Lastpage

28

Abstract

This paper focuses specifically on integral horsepower AC induction motors used in the pulp and paper industry. An analysis of the various winding stresses is presented. The different requirements for the two insulation systems are discussed (MG1-Parts 30 and 31 for General Purpose and Definite Purpose Inverter Fed Motors), and test results show the need for higher dielectric insulations when the voltage levels of Part 30 are exceeded. The differences between existing, rebuilt and new motors is also explored. To assist the reader with additional research an extensive reference section is provided.

Keywords

PWM invertors; induction motors; insulation testing; machine insulation; machine testing; machine windings; paper industry; MG1-Part 30; MG1-Part 31; NEMA standard; PWM inverter fed motors; ageing; breakdown; cable length impact; corona; dielectric insulation; end turn; insulation testing; integral horsepower AC induction motors; low voltage applications; magnet wire insulation; neutral shift; paper industry; pulp industry; standing wave effects; winding failure mode; winding stresses; Dielectric losses; Dielectric materials; Dielectrics and electrical insulation; Insulated gate bipolar transistors; Low voltage; Moisture; Pulse width modulation; Pulse width modulation inverters; Stress; Temperature;

fLanguage

English

Publisher

ieee

Conference_Titel

Pulp and Paper Industry Technical Conference, 1997., Annual

Conference_Location

Cincinnati, OH, USA

ISSN

0190-2172

Print_ISBN

0-7803-3919-3

Type

conf

DOI

10.1109/PAPCON.1997.595207

Filename

595207