Performance of Sensorless Method for PMSM Drive

In AC Drives control of a permanent magnet synchronous motor (PMSM) is a nontrivial matter, due to its nonlinear elements and time-fluctuating parameters. In many industries, PMSM drives require speed/position sensorless operation of high performance. A large portion of the sensorless control scheme is dependent motor parameter. Therefore motor performance suffers much in hostile and highly flactuating operating environment where motor parameter is varying. To defeated this issue, Model Reference Adaptive System (MRAS) based calculations have been produced, which offer versatile and straightforward solution. The test results exhibit that sensorless PMSM drive display better speed tracking.