9818246809

Zeszyły Problemowe - Maszyny Elektryczne Nr 86/2010

Tomasz Mnich Politechnika Śląska, Gliwice

WYKRYWANIE ZAGROŻEŃ TERMICZNYCH W SILNIKACH INDUKCYJNYCH ZA POMOCĄ METODY ZASTĘPCZYCH SCHEMATÓW CIEPLNYCH

DETECTING THERMAL HAZARDS OF INDUCTION MOTORS USE OF THERMAL EQUIVALENT DIAGRAMS

Abstract: The paper presents make us method of thennal equivalent diagrams to detecting thermal hazards of induction motors. Author presents prineiple of operation thennal protection Sepain 1000 and compare them with method protection induction motor, base on thermal equivalent diagrams. Results of Computer calcula-tions and practicc measurements was presented.

Filip Kutt, Mieczysław Ronkowski Politechnika Gdańska, Gdańsk

KONCEPCJA I SYMULACJA POLOWA GENERATORA O ZMIENNEJ CZĘSTOTLIWOŚCI. ZASTOSOWANIE W AUTONOMICZNYCH SYSTEMACH ELEKTROENERGETYCZNYCH

CONCEPTION AND FIELD SIMULATIONS OF A VARIABLE FREQUENCY GENERATOR. APPLICATION FOR AUTONOMOUS POWER GENERATION SYSTEM

Abstract: This paper covers a conception and simulation results for a brushless synchronous generator work-ing with variable speed in an autonomous energy generation system (e.g. airplane power grid, hybrid vehicle, micro-CHP). The papcrs has two parts: prcscntation of the generator conception used in modern autonomous energy generation systems, and simulation results using filed model elaborated in Flux2D software. The ob-tained simulation results have proved that tire assumed generator topolog}' and electromagnetic loading are adequate for the required generator perfonnance paramelers.

Tomasz Wolnik BOBRME Kornel, Katowice

ANALIZA KOSZTÓW UKŁADU KOGENERACYJNEGO Z SILNIKIEM SPALINOWYM DIESLA

ANALYSIS OF THE COSTS OF COGENERATION WITH DIESEL ENGINE

Abstract: This article presents an analysis of the profitability of the installation of cogeneration systems with the use of Diesel engines. Considered are two types of work for cogeneration systems: work for electricity systems and work for a company"s nceds. For both cases. a balance of profits and losses has been developed. Using the energy balance approach compares the amount of fuel used by tire engine for various types of fuels. In accordance with the definition of biomass, where the fuel for diesel engines is either vegetable oil or used vegetable oil. generated electricity can be regarded as energy deriyed from renewable sources and thus the relevant certificates could be sold as "green energy'".