Browse > Article
http://dx.doi.org/10.6112/kscfe.2014.19.3.024

THERMAL-FLUID ANALYSIS FOR COOLING PERFORMANCE IMPROVEMENT OF 3.3KV(105A) COMPACT RACK TYPE MEDIUM VOLTAGE INVERTER SYSTEM  

Kim, S.Y. (R&D Center, LS IS Co., Ltd.)
Kim, S.D. (R&D Center, LS IS Co., Ltd.)
Ryoo, S.R. (R&D Center, LS IS Co., Ltd.)
You, N.K. (R&D Center, LS IS Co., Ltd.)
Kim, T.B. (R&D Center, LS IS Co., Ltd.)
Hong, C.O. (R&D Center, LS IS Co., Ltd.)
Ko, H.S. (School of Mechanical Engineering, Sungkyunkwan University)
Publication Information
Journal of computational fluids engineering / v.19, no.3, 2014 , pp. 24-28 More about this Journal
Abstract
With ever rising concerns about saving of fossil fuel resource, there have been an increasing demand for use of energy more efficiently. The electric motor driven inverters can be a great help to improve energy efficiency. They are also used to control the motor speed to the actual need. Therefore the use of them can lead to reduce energy consumption. In particular, the medium voltage(MV) drive systems used for pumps, fans, steel rolling mills and tractions have widespread applications in the industry. They cover power ratings from 0.4MW to 40MW at the MV level of 2.3kV to 13.8kV. The majority of the installed MV drive systems however, are in the 1MW to 4MW range with voltage rating from 3.3kV to 6.6kV. But they are required to reduce size and weight like other power electronic equipments. In this paper, we studied on the 3.3kV(105A) compact rack type inverter system for improving the cooling efficiency. At first, we confirmed the tendency of temperature with computational simulation using ANSYS ICEPAK and actual experimental tests. And then we researched thermal performance improvement designs in order to reduce temperature of the transformer for the safe operation. It can reduce temperature of transformer that using pipe type flow guide in the system. As a result, we found out more efficient solution by thermal-fluid analysis.
Keywords
Thermal-Fluid Analysis; Motor Driven Inverter; Medium Voltage Drive System; Transformer;
Citations & Related Records
Times Cited By KSCI : 1  (Citation Analysis)
연도 인용수 순위
1 2010, Kim, H. and Na, S., "LSMV Multi-level Inverter Development and Application," KIPE 2010 Meeting, pp.311-313.   과학기술학회마을
2 2011, Lee, S., "Medium Voltage Drive Apply Water Supply Facility for Energy Efficiency Improvement," KIEE 2011 Summer Meeting, pp.1037-1038.   과학기술학회마을
3 2006, Wu, B., "High-Power Converters and AC Drives," IEEE Press, New Jersey, pp.3-5.
4 2009, Boglietti, A., "Evolution and Modern Approaches for Thermal Analysis of Electrical Machines," Industrial Electronics, IEEE Transactions, Vol.56, pp.871-880.   DOI
5 1998, Jeon, C., "Cooling of an In-line Array of Heat Sources with Air-Cooled Heat Sinks," KSME 1998 Autumn Conference, Vol.2, pp.229-234.
6 2004, Lee, J., "Design of a Heat Dissipation System for the 400kW IGBT Inverter," Jounal of Power Electronics, Vol.9, pp.350-355.   과학기술학회마을
7 2011, Zhen, Y.E., "Simulative Analysis of Traction Motor Cooling System Based on CFD," Electric Information and Control Engineering (ICEICE), 2011 International Conference, pp.746-749.
8 2013, Kim, S., "The Optimal Design of Heatsink for 4kW Photovolatic Inverter by Using Thermal and Fluid Simulation," KSCFE 2013 Spring Conference, pp.248-254.
9 2012, Mock, J., "A Comparative Evaluation Between Computational and Experimental Heat Fluid Dynamics for 1.5 MVA High Voltage Inverter System," KSCFE 2012 Spring Conference, pp.87-92.
10 1975, Hayatee, F.G., "Heat Disspation and Ripple Current Rating in Electrolytic Capacitors," Electro-component Science and Technology, Vol.2, pp.109-114.   DOI   ScienceOn