LOAD TORQUE ANALYSIS OF INDUCTION MACHINE

Abstract

This paper is focused on the load torque evaluation of the induction machine. There is described the problem of load torque oscillations and its impact to other electromagnetic variables in induction machine. In this article, the issue of modulated stator current is resolved and behaviors of amplitude and phase modulation are separated using demodulation algorithms after that. Newly, the variable load torque is retroactively determined from coefficients of amplitude and phase modulation not from nondemodulated stator current frequency spectrum. At last, theoretically acquired knowledge is compared with real measurement and different values of amplitude and phase modulation obtained from the mathematical motor model and from the real measurement are discussed. In the future, this analysis can be used as a basis for online diagnosis of driven load.

Recommended articles

ABRASIVES AND POSSIBILITIES OF INCREASE IN EFFICIENCY OF ABRASIVE WATERJETS

LIBOR SITEK, PETR MARTINEC
Keywords: high-speed waterjets | abrasive waterjets | abrasives | garnet | zirconia

METHODOLOGY OF HYDRAULIC SYSTEM DEVELOPMENT USING EXPERIMENTAL STAND AND COMPUTER MODELING

JOSEF NEVRLY, JAN BRANDEJS
Keywords: methodology | project | design | development | hydraulic | system

THE DESIGN AND SIMULATION OF THE SAFETY PART OF THE EXTRACTION SYSTEM OF THE HEAVY ION CYCLOTRON DC280 USING COMSOL MULTIPHYSICS

TOMAS MAAR, VLADIMIR I. KAZACHA
Keywords: thermal analysis | cyclotron | beam extraction system | COMSOL Multiphysics

STUDY OF QUALITY OF NINE ALUMINIUM ALLOYS SURFACES CREATED USING ABRASIVE WATERJET

DAGMAR KLICHOVA, JIRI KLICH, LUCIE GURKOVA
Keywords: surface roughness | abrasive waterjet | study of quality | aluminium alloy | optical profilometer