Overview of Sensorless Zero-Low Speed Range Control Technology based on High-Frequency Signal Injection for SPMSM

Abstract

For the sensorless position control technology of surface permanent magnet synchronous motor (SPMSM) under the operation modes of zero and low speed, this paper introduced several typical control algorithms detecting rotor position of PMSM, and analyzed the working principle and the rotor position estimation deviation control process of these types of algorithms, as well as their advantages and disadvantages in detail. Finally, the applicability of these algorithms in SPMSM at present were further compared and summarized, so as to achieve better control effect.

A Comparison Research on Sliding Mode Observation Methods for SPMSM in Sensorless Environment of Medium-to-High Speed

“…Compared with mechanical rotor position sensor system, the sensorless control technology is a breakthrough. To obtain the rotor position and speed information, it processes and calculates the sampled current, voltage and other physical quantities through software programming [3][4], which not only effectively reduces the system cost, volume and complexity of hardware design, but also improves the reliability of the control strategy of the full set of drive systems. Therefore, the sensorless control technology has attracted much attention in the industry, and the algorithm driven by sensorless has also become a research hotspot of PMSM control strategy at present.…”