Abstract
Permanent magnet synchronous motor (PMSM) drives are finding expanded use for industrial and domestic drive applications. With the distinguished characteristics such as reduced cost and increased reliability and robustness, position sensorless (self-sensing) control techniques have been good candidates for reliable and costless PMSM drives. The saliency-tracking based techniques further bring the expansion of applications with the extended controllable sensorless operating speed range. This paper presents a review on state of the art techniques for position sensorless drives using the saliency-tracking based methods. The signal injection methods and the future scope of research including the dynamic bandwidth improvement and the acoustic noise reduction are discussed.
Highlights
Permanent magnet synchronous motors (PMSMs) have received increasing attentions for industrial and domestic drive applications due to their high efficiency, high power density, and wide speed range operations[1,2,3,4,5,6,7,8,9,10,11,12,13]
Operation of model-based sensorless control relying on the back electromotive force (EMF) voltage associated with fundamental excitation of the machine is unreliable and can fail at low- and zero-speeds since the back-EMF decreases to an extent that noise, inaccuracies in sampled variables and inexact knowledge of the machine parameters yield relatively large estimation errors
This paper presents a comparative review on HF signal injection based position sensorless control for PMSM drives
Summary
Permanent magnet synchronous motors (PMSMs) have received increasing attentions for industrial and domestic drive applications due to their high efficiency, high power density, and wide speed range operations[1,2,3,4,5,6,7,8,9,10,11,12,13]. By applying a synchronous reference frame filter (SRFF), the negative-sequence carrier current that contains the position information can be derived and used to estimate the rotor position Since it uses the HF rotating signal, the dynamic characteristics are restricted within a narrow limit. To overcome the limitations of the sensorless control with conventional sinusoidal signal injection, an alternative technique using the square-wave injection in the stationary reference frame or in the estimated rotor reference frame has been developed[69,70,71,72,73,74,75,76,77,78]. The dynamic bandwidth improvement and the audible noise reduction are discussed
Sign-in/Register to view highlights & summary Sign-in/Register to access full text options 
Free) 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a call
