A Study on Passive Cooling in Subsea Power Electronics | Zendy

Faisal Wani | Zendy; Udai Shipurkar | Zendy; Jianning Dong | Zendy; Henk Polinder | Zendy

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A Study on Passive Cooling in Subsea Power Electronics

Author(s) -

Faisal Wani,

Udai Shipurkar,

Jianning Dong,

Henk Polinder

Publication year - 2018

Publication title -

ieee access

Language(s) - English

Resource type - Journals

SCImago Journal Rank - 0.587

H-Index - 127

ISSN - 2169-3536

DOI - 10.1109/access.2018.2879273

Subject(s) - aerospace , bioengineering , communication, networking and broadcast technologies , components, circuits, devices and systems , computing and processing , engineered materials, dielectrics and plasmas , engineering profession , fields, waves and electromagnetics , general topics for engineers , geoscience , nuclear engineering , photonics and electrooptics , power, energy and industry applications , robotics and control systems , signal processing and analysis , transportation

This paper proposes a simplified approach to model the thermal behavior of the insulated-gate bipolar transistors (IGBTs) in a subsea power electronic converter. The models are based on empirical relations for natural convection in water, and IGBT datasheet values. The proposed model can be used in the design of subsea converters and in the reliability analysis of their IGBTs. Experimental results are provided to validate the proposed thermal model. Suggestions are made to minimize the net thermal resistance by introducing a high conductivity thermal material as a mounting plate between the IGBT and the cabinet walls. Impact of the mounting plate dimensions and material properties on the junction temperature of the IGBTs is studied. A case study analysis is made on a 100-kVA converter. Results indicate that the thermal spreading resistances in the mounting plate and the cabinet walls contribute significantly to the overall thermal resistance. Spreading resistances can be mitigated by appropriate design measures. Furthermore, it was observed that the passive cooling in water is not as effective as the forced water cooling. However, the low cost, simple design, and higher reliability of passive cooling systems might make them a favorable choice for subsea systems.

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