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Lecture
Are you an EPFL student looking for a semester project?
Work with us on data science and visualisation projects, and deploy your project as an app on top of Graph Search.
This lecture covers the concept of a synchronous motor as part of an electric drive system, exploring how the addition of electronics and mechanics can alter its characteristics. It delves into auto-commutated electric drives, methods for detecting rotor position, and various commutation modes. The complexity of the system, including sensors, control logic, and inverters, is discussed, highlighting the challenges in selecting and integrating components. Additionally, the lecture addresses mechanical aspects in electric drives, such as rotational transformations and speed adjustments. Various sensor options, including Hall probes, resolvers, and inductive sensors, are presented, along with sensorless solutions that rely on induced voltage for rotor position detection. Different commutation modes, such as 120°, 180°, and sinusoidal, are explained, emphasizing their impact on motor operation and control.