COURSE FACILITATOR SESSION

Today, May 17, 2024, I attended a course facilitator session on the topic of three-phase induction motors, focusing on their starting mechanisms, various starting methods, and the merits and demerits of each. The session was conducted by Professor Gowrishankar from the National Institute of Technology. During the session, Professor Gowrishankar provided an in-depth analysis of the principles behind three-phase induction motors, which are widely used in industrial applications due to their robustness and efficiency. He elaborated on different starting methods such as direct-on-line (DOL), star-delta, autotransformer, and soft starters, explaining the technicalities and applications of each. The discussion included a comparative analysis of these methods, highlighting their advantages and limitations in different scenarios. For instance, while DOL starting is simple and cost-effective, it can cause a high inrush current, potentially damaging the motor. On the other hand, star-delta starting reduces the inrush current but requires more complex circuitry and is not suitable for high-torque applications. The session was highly informative, offering valuable insights into optimizing motor performance and reliability in various industrial settings. Professor Gowrishankar's expertise and clear explanations made complex concepts accessible, enriching our understanding of this critical aspect of electrical engineering.