RELIABILITY ANALYSIS OF LIQUID COOLING SYSTEMS’ MECHANICAL COMPONENTS FOR 3 MVA POWER CONVERTER

Authors

  • M. Polikarpova Lappeenranta University of Technology
  • M. Lohtander Lappeenranta University of Technology
  • L. Popova Lappeenranta University of Technology
  • T. Musikka Lappeenranta University of Technology
  • R. Juntunen Lappeenranta University of Technology
  • P. Silventoinen Lappeenranta University of Technology
  • J. Varis Lappeenranta University of Technology
  • O. Pyrhönen Lappeenranta University of Technology
  • J. Pyrhönen Lappeenranta University of Technology

DOI:

https://doi.org/10.5755/j01.mech.19.4.5055

Keywords:

converter, cooling system, reliability analysis

Abstract

The rapid development of powerful generators for wind power plants leads producers of power converters search ways to maximize the nominal power and availability of their converter units. The cooling solutions of a medium voltage converter with rated power of 3MVA are designed and assessed here from thermal and reliability points of view. Cooling becomes the limiting factor in meeting the weight, volume and reliability objectives of high power devices. The 3D FEM thermal modeling of the power module and analytical reliability analysis on the cooling systems’ equipments are used to compare the cooling systems based on single-phase cold plates, heat pipes with water pools and two-phase cold plates.

DOI: http://dx.doi.org/10.5755/j01.mech.19.4.5055

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Published

2013-08-29

Issue

Vol. 19 No. 4 (2013)

Section

MECHANICS OF FLUIDS AND GASES