SVIBOR - Project code: 2-05-276

MINISTRY OF SCIENCE AND TECHNOLOGY

Strossmayerov trg 4, HR - 10000 ZAGREB
tel.: +385 1 459 44 44, fax: +385 1 459 44 69
E-mail: ured@znanost.hr

SVIBOR

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Project code: 2-05-276


RESEARCH OF SYNCHRONOUS MACHINES AND METHODS FOR THEIR DESIGN


Main researcher: SIROTIĆ, ZVONIMIR (43325)


Assistants
Type of research: applied
Duration from: 01/01/91. to 12/31/93.
Papers on project (total): 58
Institution name: Fakultet elektrotehnike i računarstva, Zagreb (36)
Department/Institute: Department of Electric Machines, Drives and Automation
Address: Unska 3
City: 10000 - Zagreb, Croatia
Communication
Phone: 385 (0)1 6129-770
Fax: 385 (0)1 6129-705
E-mail: ljiljana.kuterovac@fer.hr
Phone: 385 (0)1 6129-706
Summary: Design of mathematical models for computing transients and torsional oscillations of large turbine type generators. The aim of this research is to analyze some elements of the mechanical design of large synchronous machines in order to enable the choice of optimal variants, its modelling and incorporation in a informative system. Analysis of the characteristics of lap windings for high voltage machines and judgment of the opportunity of theirs application. Research of the corona shielding and partial discharge effects on models of high voltage windings. Research on the pole fixing elements. Analysis of the motion stability of hydrogenerator rotors taking into account elasticity of the bearings, mass of the powerhouse, and other outer forces. Design of a suitable mathematical model, choice of the system structure, and synthesis of the brushless excitation system will be made, and this with generator working on his own net as well as in the complicated power system. Design of a system for automatic electromagnetic calculation of synchronous generators. The system will consist of data base of designed generators, some mathematical moduli connected to data base and subsystem for working out documents.

Keywords: synchronous machine, modelling, winding, rotor dynamics, technical data-base CAD, partial discharges, semi-conductive protection, torsional oscillations, transients, brushless excitation system, methods of photoelasticity

Research goals: Design of a mathematical model for computing transients of large turbine type generators on the base of the model proposed by mathematical committee CIGRE. Analysis of elements which make possible optimisation of the generator design: - windings - design of corona shielding of high voltage windings - dynamics of the shaft systems of turbogenerators - analysis of the shaft systems of hydrogenerators Design of a mathematical model of a system for automatical voltage regulation and a synthesis of different structures of automatic regulation systems. Design of system for automatic electromagnetic calculation and creation of required documentation of synchronous machines.

COOPERATION - INSTITUTIONS


  1. Name of institution: Končar - Institut za elektrotehniku
    Type of institution: University/Faculty
    Type of cooperation: Other
    City: 10000 - Zagreb, Croatia
Other information about the project.
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