In this detailed tutorial, Darren Quinn of Mechanic Mindset breaks down one of the most critical yet misunderstood components in today’s automotive systems: the three-phase brushless motor.
WHY WATCH
Understanding how to test and interpret resistance accurately is becoming a key skill for every technician. Darren’s explanation bridges the gap between electrical theory and workshop practice, making complex concepts approachable without oversimplifying them.
Found in everything from electric vehicles to fuel pumps and modern EGR valves, these motors are fast becoming standard in the evolving aftermarket.
The video begins with a deep dive into the internal structure of a three-phase brushless motor.
Darren explains how three precisely spaced coils (U, V, and W phases) generate a rotating magnetic field that drives the motor’s magnet rotor.
While the concept sounds simple, maintaining balanced coil resistance is essential for smooth, reliable operation.
