The purpose of this application note is to illustrate a software-based implementation of sensorless, field oriented control for permanent magnet synchronous motors using Microchip digital signal ...

motor control based on a six-step commutation sequence; detection of the magnetic angle of the rotor, to perform the commutation at the correct angle (each step corresponds to an angle of 60 degrees); ...

When used in an appliance, a permanent magnet synchronous motor (PMSM) provides very good efficiency because of its constant rotor magnetic field, which is produced by a permanent magnet on the rotor.

Designers can expect environmental demands to continue to drive the need for advanced motor control techniques that produce energy efficient air conditioners, washing machines and other home ...