Transformer Efficiency

In this video, we continue our transformer series by focusing on performance analysis, in particular, the transformer efficiency. In previous lessons, we covered transformer construction, theory of operation, exact equivalent circuits, and simplified equivalent circuits. Now, we bring those concepts together to understand how efficiently a transformer converts electrical power and how efficiency varies with loading conditions. 📌 Topics Covered ⏱️ 00:10 – Introduction ⏱️ 00:31 – What are transformer losses? ⏱️ 01:37 – Definition of efficiency and transformer efficiency ⏱️ 02:45 – Why efficiency calculations are important ⏱️ 03:12 – Mathematical calculation of efficiency when the circuit is referred to the primary side ⏱️ 04:44 – Mathematical calculation of efficiency when the circuit is referred to the secondary side ⏱️ 06:28 – Efficiency calculation under full-load conditions ⏱️ 09:22 – Worked example: calculating efficiency using two different methods ⏱️ 11:40 – Transformer loading ⏱️ 13:03 – Transformer losses versus percentage loading ⏱️ 13:40 – Transformer efficiency at any load as a function of full-load efficiency ⏱️ 15:35 – Worked example: efficiency calculation at any load ⏱️ 17:54 – Maximum efficiency ⏱️ 18:50 – Worked example: maximum efficiency calculation ⏱️ 20:06 – Comparing full-load efficiency and maximum efficiency ⏱️ 21:20 – Exercise: Post your answers in the comments section! This lesson is ideal for electrical engineering students, technicians, apprentices, and anyone preparing for examinations or working with power transformers. Detailed derivations and worked examples are included to help you understand both the theory and practical application of transformer efficiency calculations. 💬 Exercise Challenge: Try the exercise at the end of the video and post your solution in the comments. It will be interesting to compare different approaches and discuss the results. 👍 If you found this video helpful, please Like, Subscribe, and Share to support the channel and help others learn electrical engineering. 🔔 Turn on notifications so you don't miss future videos covering transformers, electrical machines, power systems, circuit analysis, and engineering problem-solving. #ElectricalEngineering #Transformer #TransformerEfficiency #PowerSystems #ElectricalMachines #EngineeringEducation #PowerEngineering #TransformerLosses #ElectricalMachinesTheory #EngineeringStudents