#2 BLDC 모터 PWM부터 PI 속도 제어까지 한 번에 이해하기

Hello! This is Control Expert. ⚙️ Following up on the last video, this time we have taken an in-depth look at speed control for BLDC motors. We have meticulously summarized everything from the basic principles of PWM (Pulse Width Modulation), the core of motor control, to a comparison of unipolar and bipolar switching losses directly related to inverter heat generation, and even the M/T method speed measurement techniques used in actual industry. In particular, we have visually explained the principles and actual waveforms of PI speed controllers—which enable stable maintenance of target speeds even when external loads change—as well as the Torque Ripple phenomenon, an inherent limitation of Hall sensor-based 6-step control, making it easy to understand. Please watch until the end of the video! In the next video, we plan to cover PMSM (Permanent Magnet Synchronous Motor) and vector control, which can drastically reduce this Torque Ripple. Don't forget to subscribe and like! 👍