Intelligent Parameter Identification and Sensorless Control of Permanent Magnet Synchronous Motor

Abstract

In this paper, a spider monkey optimisation (SMO) algorithm is utilised to identify the parameters of the permanent magnet synchronous motor (PMSM), considering the parameters vary during the motor operation, which affects the sensorless control (SC) performance of the motor. An improved sliding mode observer (SOBS) is proposed for estimating the position and speed of the rotor. First, the SMO algorithm is used to identify the parameters of PMSM. Then, based on the identification results, an improved SOBS is proposed by a piecewise Sigmoid function. Furthermore, the stator position and speed are estimated by extended state observer (ESO) and phase-locked loop (PLL). Finally, a comparison simulation scenario is provided to demonstrate the efficacy of the suggested approach.

Research on feedforward compensation control of permanent magnet synchronous motor based on load period fluctuation

“…In the case of torque compensation at an outdoor temperature of 60℃, the peak value of the phase current can even reach 25A. In order to ensure the effectiveness of feedforward compensation control, the magnetic circuit design parameters of compressor motor need to be adjusted accordingly [4] .…”