Development of Adaptive Speed Observers for Induction Machine System Stabilization (1st ed. 2020)

This book describes the development of an adaptive state observer using a mathematical model to achieve high performance for sensorless induction motor drives.

This involves first deriving an expression for a modified gain rotor flux observer with a parameter adaptive scheme to estimate the motor speed accurately and improve the stability and performance of sensorless vector-controlled induction motor drives.

This scheme is then applied to the controls of a photovoltaic-motor water-pumping system, which results in improved dynamic performance under different operating conditions.

The book also presents a robust speed controller design for a sensorless vector-controlled induction motor drive system based on H8 theory, which overcomes the problems of the classical controller.