E-lesson

Design of power transformers – e-lesson #7: Load losses and measures to reduce additional losses

This is the fifth e-lesson in the Design of power transformers course authored and conducted by Aleksandar Lojpur.

Intermediate level
Design of power transformers - e-leeson #5 - Load losses illustration 850 x 400 - INFOLOGICDESIGN v2
Intermediate level

Hosted by: Aleksandar Lojpur / Intermediate level

Illustration credit: Infologic Design

This is the seventh e-lesson in the Design of power transformers course authored and conducted by Aleksandar Lojpur, and here you can access your room link for it.

The attendees who are subscribed to the entire Intermediate level will have the opportunity to take the mini-exam (a couple of questions) after the session has been conducted. This will be possible after every lesson on this level. If you pass all of the mini-exams, you will earn the certificate of achievement without taking the master exam after the entire level has been conducted.

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The idea behind this series of lectures is to reveal the importance of each design phase and interlinks between them in the transformer life expectation of 30 years and more. This course provides the overview of the main design aspects.

Attend the session to learn about the following:

• Stray field
• Ohmic losses
• Skin losses
• Circulating currents
• Losses in different metal parts
• Principles of stray field control, losses and local hot spots reductions

About the author

Alekasndar Lojpur picture - 300 x 300

Aleksandar Lojpur

Aleksandar Lojpur is a Master of Electrical Engineering, having obtained the degree at the Faculty of Electrical Engineering and Computing at the University of Zagreb, Croatia.

In the period from 2014 to 2021 he performed the duty of Head of Electrical design at the Končar Power Transformers Ltd., a joint venture of Siemens Energy AG and Končar, while from 2019 to 2020 he was a lecturer at the Postgraduate Specialist Study in Transformers – Transformer Design at the University of Zagreb, Faculty of Electrical Engineering and Computing.

His most notable projects include 200 MVA autotransformer with phase shift regulation for Croatia, 560 MVA, 550 kV single phase autotransformer for USA; 1,000 MVA, 420 kV autotransformer for Norway; 200 MVA and 350 MVA network transformers for solar power plants for Spain design verification and more.