Thermal Equivalent Circuit for Multiple Nodes and Losses — Lesson 8

This lesson covers the concept of thermal equivalent circuits in induction machines. It delves into the understanding of thermal nodes and how they are used to realize the thermal model of an induction machine. The lesson also discusses the different types of losses that exist in the machine and how they are incorporated into the thermal equivalent circuit. It further explains the assumptions made in realizing the thermal equivalent circuit for an induction machine. The lesson also provides a detailed explanation of how to calculate the thermal resistance and thermal capacitance in the circuit. It concludes by showcasing various thermal networks from different literatures for a comprehensive understanding.

Video Highlights

00:00 - Introduction
00:24 - Explanation of realizing the thermal equivalent circuit
04:48 - Calculation of thermal resistances for nodes
41:01 - Discussion on thermal network
42:12 - Calculation of thermal thermal capacitance
43:57 - Showcase of various thermal networks from different literatures

Key Takeaways

- Thermal equivalent circuits in induction machines are realized by considering multiple thermal nodes.
- Different types of losses in the machine, such as mechanical losses, are incorporated into the thermal equivalent circuit.
- Assumptions are made in realizing the thermal equivalent circuit for an induction machine, such as considering the heat flow in both radial and axial directions.
- The thermal resistance and thermal capacitance in the circuit can be calculated using specific formulas.
- Various thermal networks from different literatures provide a comprehensive understanding of the concept.