This master's thesis details the development and verification of a new thermal model for STATic synchronous COMpensator (STATCOM) installations, particularly SVC Light plants, utilizing Computational Fluid Dynamics (CFD) simulations. The aim of this study is to determine the duration for which an SVC Light STATCOM plant can remain operational without coolant flow. An examination of an existing thermal equivalent circuit is performed, and a new circuit design is presented that more effectively represents the three-dimensional aspects of the thermal energy flow. The new thermal circuit is calibrated using CFD simulations of the coolant fluid flow and thermal energy transfer from the Insulated Gate Bipolar Transistor (IGBT) modules. This updated thermal model can accurately predict the temperatures of the transistor and diode chip junctions within the IGBT modules, as well as the coolant temperature within the adjacent heatsinks. The model is utilized to predict the operational time of SVC Light STATCOM plants during a coolant flow disruption. The findings suggest that the operational time limit set by the plant manufacturer can often be extended without surpassing the presently imposed thermal design constraints.
| Identifer | oai:union.ndltd.org:UPSALLA1/oai:DiVA.org:uu-534006 |
| Date | January 2024 |
| Creators | K. Malmenstedt, Jacob |
| Publisher | Uppsala universitet, Tillämpad kärnfysik |
| Source Sets | DiVA Archive at Upsalla University |
| Language | English |
| Detected Language | English |
| Type | Student thesis, info:eu-repo/semantics/bachelorThesis, text |
| Format | application/pdf |
| Rights | info:eu-repo/semantics/openAccess |
| Relation | UPTEC F, 1401-5757 ; 24034 |
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