Structure and difference between inner and outer rotors of permanent magnet synchronous motor

Permanent magnet synchronous motor (PMSM) must first understand two concepts, “permanent magnet” and “synchronous”. “Permanent magnet” means that the rotor of the motor is a permanent magnet, also called a permanent magnet; “synchronous” means that the frequency of the rotor and the frequency of the stator are the same, and its…

Brushless DC motor (BLDC) and permanent magnet synchronous motor (PMSM) differences

1, structural differences, brushless DC motors usually rotor poles using tile magnets, after the magnetic circuit design, you can get trapezoidal wave of air gap magnetic density, stator winding more concentrated whole pitch winding, so the induction counter-electromotive force is also trapezoidal wave. Brushless DC motor control requires position information…

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