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Calculation and Analysis of Electromagnetic Field and Temperature Field for Powerformer during Steady-State Operation

Author: ChangWeiBin
Tutor: GeBaoJun
School: Harbin University of Science and Technology
Course: Motor and electrical
Keywords: Energy converter Load operation Electromagnetic Fields Temperature field
CLC: TM31
Type: Master's thesis
Year: 2009
Downloads: 66
Quote: 0
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Abstract


The energy converter is a novel high voltage generators . The energy converter of the stator windings with the high voltage cable of XLPE , the stator winding is circular in cross - section , to produce a uniform electric field distribution around the conductor . A rectangular conductor of the conventional generators generate nonuniform electric field distribution, and the limit the conventional generator output voltage is higher than 36kV , and the round conductor may overcome this drawback . This design allows the energy converter can output high voltage , eliminating the need for step-up transformer could be directly connected to the transmission and distribution network . Compared with conventional motors , the energy converter has the advantages of low cost , high efficiency , low maintenance costs , which will make it will have broad prospects for development in the future . This article is based on a 130kW energy converter prototype for the subject background , analysis and calculation of the the energy converter electromagnetic field and temperature field . First introduced the background of the development of the energy converter and research status , a detailed analysis of the significance of the study of large synchronous generators and energy converters electromagnetic fields and temperature field analysis and calculation . Then set up a two-dimensional mathematical model for calculation of electromagnetic field energy converter , finite element analysis of the the energy converter electromagnetic field model using finite element software . The energy converter of the magnetic field distribution in no - load and load situation, the comparative analysis of the calculated value with the design value . Finally, analysis of the stator and rotor temperature field in steady-state operation of the energy converter , respectively, to establish the energy the converter rotor temperature field of the three-dimensional to solve the model using the finite element software finite element of the the energy converter three-dimensional temperature model analysis , energy converter stator and rotor temperature field distribution . And the finite element method calculation results with the experimental data for comparative analysis , draw the appropriate conclusions .

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CLC: > Industrial Technology > Electrotechnical > Motor > Generators, large the generator group ( Zonglun,)
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