Overview

"Introduction to Electric Motors" is an engaging, hands-on course designed for students to explore the principles, components, and applications of electric motors, which are essential devices that convert electrical energy into mechanical motion. This course provides a foundational understanding of electromagnetic principles and motor technology, preparing students for further studies in engineering, physics, or related fields. Through interactive lectures, practical demonstrations, and group projects, students will learn how motors power everyday devices, from household appliances to electric vehicles.

Main Concepts Covered

• Core Principles of Electric Motors: Understand electromagnetic induction and the Lorentz force, which drive motor operation through the interaction of magnetic fields.

• Key Components and Their Functions:

  • Stator: The stationary part that generates a magnetic field using windings or magnets.

  • Rotor: The rotating component that drives the motor’s shaft to produce mechanical work.

  • Windings: Coils of wire that create magnetic fields when energized.

  • Bearings: Components that reduce friction and ensure smooth rotor rotation.

  • Commutator and Brushes (DC Motors): Mechanisms that switch current direction to maintain continuous rotor motion.

• Types of Motors: Compare AC motors (e.g., induction motors) and DC motors (e.g., brushed and brushless), including their unique features and applications.

• Motor Operation:

  • How AC motors use a rotating magnetic field to drive the rotor.

  • How DC motors use commutators or electronic controllers to sustain rotation.

• Applications and Efficiency: Explore real-world uses of motors (e.g., in fans, pumps, and electric vehicles) and factors affecting motor efficiency, such as minimizing electrical and mechanical losses.

Assessment Methods

Students will be evaluated through a combination of methods to ensure a comprehensive understanding of the material:

• Quizzes (30%): Weekly quizzes to assess understanding of key concepts, such as motor components and electromagnetic principles.

• Hands-On Projects (40%): Group and individual projects, including assembling a simple DC motor and analyzing its performance. Projects will be graded on functionality, creativity, and a written report.

• Final Exam (100%): A comprehensive exam covering theoretical and practical aspects of electric motors, including problem-solving questions and diagram analysis.

• Class Participation (70%): Engagement in discussions, lab activities, and demonstrations, encouraging active learning and collaboration.

Course Facilitators

• Wambui Kevin, Lead Trainer

  • Background: Diploma in Electrical Engineering with 10 years of experience in motor design and renewable energy systems.

  • Role: Delivers lectures, oversees projects, and provides guidance on theoretical concepts.

  • Contact: wambuik381@gmail.com

• Mr Victor Moranga, Lab Coordinator

  • Background: Mechanical Engineering B.S., with 5 years of industry experience in motor manufacturing and testing.

  • Role: Facilitates hands-on labs, demonstrates motor assembly, and assists with project implementation.

  • Contact: victormoranga@gmail.com

Additional Details

• Duration: 12 weeks, with 2 hours of lectures and 2 hours of lab work per week.

• Prerequisites: Basic understanding of physics (electricity and magnetism) recommended but not required.

• Learning Outcomes: By the end of the course, students will be able to explain how electric motors work, identify their components, compare AC and DC motor types, and build a simple motor prototype.