Difference between speed control unit of bldc motor and induction motor
There are smaller, less complex, and less expensive control units for small BLDC motors. Control units equivalent to induction motor control units may provide more control features, better performance in some respects and a higher ratio of motor torque per unit mass. The design specifics of the motors must also be considered. A lot of the research is being applied to motor and controller design for electric vehicles. In that area, the brushless motors are generally considered to be permanent-magnet synchronous motors (PMSM). In their essentials, BLDC and PMSM machines are the same. However, there appear to be differences in the details of the design, mathematical modeling and control approaches.