9818246811

Zeszyły Problemowe ~ Maszyny Elektryczne Nr 86/2010

Paweł Pistelok BOBRME Kornel, Katowice

ROZWIĄZANIA KONSTRUKCYJNE UZWOJEŃ Z BEZPOŚREDNIM CHŁODZENIEM WODNYM

STRUCTURAL SOLUTIONS TO WINDINGS WITH DIRECT WATER COOLING

Abstract: The paper deals with the structural Solutions to windings of stators with the direct watcr-cool2(£5 Structures with the different degree intensity of cooling were showed. A discussed advantages and disadvantages of windings with direct water-cooling. This paper give information about problems which should be taken into account during design process new machinę with direct water cooling. The paper describes also corrosion properties of water which have influence on the system of chilling.

Włodzimierz Zieliński Politechnika Lubelska, Lublin

BŁĘDY W POMIARACH PROCESÓW ISKRZENIOWYCH KOMUTATOROWYCH MASZYN PRĄDU STAŁEGO

THE ERRORS IN THE MEASUREMENT OF D.C. COMMUTATOR MACHINES SPARKING PROCESSES

Abstract: The Computer system connection with a sparking analiser enabled the evaluation of the brush-com-mutator sparking junetion in reference to a particular portion of the commutator. To assess the sparking some mathematical indicators were applied. which reflect light signals. The measurements results of the con-ducted research are always different from the real figures. The physical figures measurements are capable to establish only the estimates which contain errors. In this article an attempt to a discussion of the errors com-initted at conducting the measurements by means of the opto-electronic method was presented.

Piotr Kisielewski, Ludwik Antal Politechnika Wrocławska, Wrocław

BADANIE STABILNOŚCI TURBOGENERATORA PRZY ZMIANACH OBCIĄŻENIA

RESEARCH OF TURBOGENERATOR STABILITY FOR LOAD CHANGES

Abstract: This paper prcsents two-dimensional field-circuit model of 500 MVA turbogenerator. Model isdesigned to calculate static and dynamie characteristics of machinę. During solving field eąuations real physical characteristics of materials. configuration of windings. damper circuit and motion elements in electromagnetic field are taken into account. In circuit part there is an electrical scheme. The electrical elements corrcspond with winding in the field model. Parametcrs of frontal connections are included. The model was applied to calculate stator currents. magnetic torąue and rotor speed in case of sudden power inerease.

Rafał Setlak, Politechnika Śląska, Gliwice Przemysław Kuś

Badawczy Ośrodek Samochodów Małolitrażowych BOSMAL, Bielsko-Biała

REGULACJA TEMPERATURY CIECZY CHŁODZĄCEJ W UKŁADZIE NAPĘDOWYM MILD HYBRID