The purpose of this course is to build upon the foundational knowledge of electrical machines acquired in Electrical Machines I, by introducing students to the principles, operation, performance, and applications of advanced electrical machines. It aims to develop a strong understanding of transformers, synchronous machines, and induction machines, with emphasis on their modeling, characteristics, testing, control, and industrial applications.

The course equips students with analytical and practical skills necessary to:

• Interpret machine performance under different operating conditions.

• Apply theoretical knowledge to real-world electrical power systems.

• Develop problem-solving and diagnostic abilities for machine faults.

• Prepare for advanced studies and professional practice in power and energy systems.

At the end of this module, you will be able to:

1.  Explain the principles and purposes of non-conventional transformer connections, terminal markings and instrument transformers.

2. Derive the equations for transforming three-phase to two-phase and three-phase to single-phase transformation using Scott connections.

3. Analyze the performance of transformers operating on infinite bus bars.

4. Evaluate the suitability of various non-conventional transformer connections for specific power system applications.

This module explores the advanced concepts and practical aspects of non-conventional transformer connections and their role in modern power systems. You will be introduced to terminal markings and various alternative three-phase connections that enhance system flexibility and reliability. The study extends to auto-transformers, which provide economical solutions for voltage regulation and interconnection of power systems, as well as Scott connections for converting three-phase supplies into two-phase or single-phase systems, commonly used in traction and special industrial applications.

The module also emphasizes the significance of instrument transformers in measurement and protection, ensuring safety and accuracy in high-voltage networks. Special focus is given to transformer operation under conditions such as connection to infinite bus bars, where synchronization and stability are critical.

By the end of this module, you will develop a comprehensive understanding of the design, operation, and applications of non-conventional transformer connections, enabling them to evaluate their suitability for diverse power system environments.