Permanent Magnet Synchronous and Brushless DC Motor Drives Ramu Krishnan
Publisher: CRC

During start-up, the permanent magnet machine can be used as a brushless DC motor (BLDC), for which there are established means of operating [17]. Servomotors can be classified as brushless-dc motors (BDCMs or BLDCMs), servos, brushless-dc/ac synchronous servomotors, ac permanent-magnet (PM) servos, and more. Both are in principle permanent magnet synchronous motors, but with different characteristics and intended mode of operation. The evaluation board directly connects with one or two DC brush/brushless servomotors, AC asynchronous motors, AC permanent-magnet synchronous servomotors or stepper motors to form a digital servo-motion control system. Five popular generic types of electric motors are the universal brush dc, variable or switched reluctance, ac induction, and electronically controlled brushless synchronous or permanent magnet (PM) synchronous motor. Steppers are mainly I'd like to think that Brushless DC Motors (BDM for now) is more suitable for high rpm. A DC-source feeds an inverter which in turn is connected to the three phases of the motor. A brushless DC Motor I'd guess that if you make a stepper and a BDM drive a fan (or other object that require high rpm), then if the motors get out of phase, a BDM would cause less vibrations than the stepper. Operation relies on the proper entry of servomotor parameters into a drive. Electric motors are the mechanical muscle power that drives fans, blowers, pumps, printers, disk drives, ATMs, and industrial and medical machines, along with automobiles, busses, aircraft control surfaces, and hundreds of other applications. Myriad servomotor parameters can be entered incorrectly if motor manufacturer units and drive parameters don't match or aren't understood. Permanent Magnet Synchronous and Brushless DC Motor Drives (Mechanical Engineering) by R. Midway between ordinary DC motors and stepper motors lies the realm of the brushless DC motor.