9818246810

Zeszyły Problemowe - Maszyny Elektryczne Nr 86/2010

Andrzej Białas BOBRME Kornel, Katowice

BADANIE POŁĄCZENIA WCISKOWEGO POMIĘDZY WAŁEM A TULEJĄ SILNIKA TYPU SPM ZASTOSOWANEGO W NAPĘDZIE SAMOCHODÓW ELEKTRYCZNYCH

RESEARCH OF INTERFERENCE JOINT BETWEEN SHAFT AND SLEEVE OF THE ELECTRIC MOTOR TYPE SPM USED AS A DRIYE FOR ELECTRIC CARS

Abstract: The paper contains research of stresses occurrencc on cylindrical surface of interference joint be-tween shaft and sleeve of rotor used as a drive for electric cars. This article presents comparison analytic method with advanced program finite element method (FEM). This program uses to research of load capacity interference joint when we impose a load to the sleeve.

Tadeusz Glinka, Emil Król, Tomasz Wolnik BOBRME Kornel, Katowice

MODEL POLOWY BEZRDZENIOWEJ MASZYNY TARCZOWEJ

FIELD MODEL OF CORELESS AXIAL FLUX MACHINES

Abstract: A very interesting construction of disc-type machines are coreless machines. Because there is no core in the stator this type of axial flux machines doesn't have a cogging torque, iron losses or eddy current. Axial flux machines are construction. which reąuires to make a 3D model. Presented in this paper are 3D field models of coreless axial flux machines. which map a prototypc of the machinę madę. Demonstrated are meth-ods of modeling particular elements and parameters of machines.

Stanisław Rawicki, Jacek Koczorowski, Marcin Nowak

Politechnika Poznańska, Poznań

Radosław Mirski, Uniwersytet Przyrodniczy, Poznań

ANALIZA AKUSTYCZNEGO WIDMA TRÓJFAZOWEGO SILNIKA INDUKCYJNEGO PRZY USZKODZENIACH UZWOJENIA STOJANA

ANALYSIS OF ACOUSTIC SPECTRUM OF THREE-PHASE INDUCTION MOTOR AT STATOR WINDING DAMAGES

Abstract: The paper concems the diagnostics of windings defects in three-phase induction motors basing on the electric machinę noise analysis. With the help of the Computer software, the acoustic spectmm was ana-lysed and the dominant diagnostic harmonics of noise of the three-phase slip-ring induction motor have been detcrmined. The failures of the following type: the intcmal shorting between two phascs and the short-circuit of the stator coil have been investigated. The problem of the increase of the damage degree was also analysed. Within the framework of the comparative diagnostic methodics. the properties and parameters of the symmetrical tluee-phase induction motor are the basis for a stale valuation of the electrical machinę. It was illustrated that the change of the acoustic spectrum can give infonnation about the technical State of the motor. The interesting methodology of noise research consists in im estigations for freąuencies of a wide rangę. Ali presented in this paper measurements have been done for the three-phase induction slip-ring motor placed on the work-stand.