Sensorless control method and system of surface mount permanent magnet synchronous motors based on a nonlinear observer

摘要

The present invention is a sensor of a surface mounted permanent magnet synchronous motor using a nonlinear observer configured to detect the rotor pole position of a synchronous motor by configuring a motor model based nonlinear observer at the stationary coordinates of a surface mounted permanent magnet synchronous motor. The present invention relates to a lease control method and system. That is, the present invention is based on the rotor magnetic pole position information expressed in the form of a sin function and a cosine function obtained through a nonlinear observer constructed based on a mathematical model of a current differential equation form of a surface-mounted permanent magnet synchronous motor. Detects the position of the rotor, and uses the position sensor (encoder or resolver) to detect the speed information necessary for motor control using the phase locked loop (PLL) It provides a method of driving the permanent magnet synchronous motor by the sensorless control without.