Control strategies for permanent magnet synchronous motor applications

Abstract

The direction of the research study presented in this thesis is the control of PMSM drives; mainly sensorless control for applications where low cost requirements are mandatory, and ISA control for automotive industry were the demand for high efficiency and low cost production is continuously growing. In Chapter 3 are presented three categories of observers for sensorless control PMSM drives, Chapter 4 continues with sensorless control by developing the V/f control with two stabilizing feedback corrections and Chapter 5 is an introduction to automotive industry by developing an ISA control structure used in HEV topology. The multidisciplinary research study of the thesis includes: control system engineering, electric drives, power electronics, electrical engineering and mechanical engineering. The arguments for including the thesis in the control system engineering field of study are presented as follows: - Modeling of PMSM, with parameters identification; - Development of an nonlinear state and disturbance observer; - Implementing and developing sensorless control systems, i.e., V/f control with two stabilizing feedback corrections; - Proposing an ISA control structure; - Real-time implementation; - Comparative simulation results.