Identification of design criteria for converter cooling system of permanent magnet direct-drive wind turbine generator

College

Gokongwei College of Engineering

Department/Unit

Mechanical Engineering

Document Type

Conference Proceeding

Source Title

ASME International Mechanical Engineering Congress and Exposition, Proceedings (IMECE)

Volume

8

Publication Date

1-1-2016

Abstract

The design criteria of converter cooling system for a 2.5 MW permanent magnet direct-drive wind turbine generator were investigated. Two (2) distribution networks with pipe sizes of DN40 and DN50 were used as basis for fluid flow analysis. The theoretical system pressure drop and system volume flow rate of converter cooling system were calculated using the governing equations of mass conservation, pump performance curve and distribution network characteristics. The system of nonlinear equations was solved using multivariable Newton-Raphson method with the solution vector determined using LU decomposition method. Numerical results suggest that the DN50 pipe provides a pressure drop limit of less than 300 Pa/m in the converter cooling system better than the pressure drop obtained from a DN40 pipe. The system volume flow rate of DN50 pipe was found to be above the operating limit of heat exchanger requirement of 135.30 L/min which needs to dissipate heat with a minimum of 50 kW. Copyright © 2016 by ASME.

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Digitial Object Identifier (DOI)

10.1115/IMECE201666772

Disciplines

Mechanical Engineering

Keywords

Air conditioning—Efficiency

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