Adaptive High Gain Observer Based MRAS for Sensorless Induction Motor Drives

Because of their advantages, speed sensorless induction motor drives have received a lot of attention in the academic and industrial communities over the last decade. Despite the recent developments in this area, the performance of sensorless variable-speed IM drives in ultra-low and zero electrical rotor speeds and regeneration mode remains a big challenge. To obtain acceptable results under unobservable conditions, an adaptive high gain observer based MRAS speed estimator is proposed in this article. The stability analysis of the proposed algorithm is proved using the Lyapunov stability theorem. Moreover, the efficiency and feasibility of the proposed estimator are verified by comparative experiments.

• sensorless induction motor drive
• rotor speed estimation
• zero-speed operation
• regeneration mode
• Lyapunov stability
• variable frequency drive

• 9 — Industry, innovation and infrastructure

• Sensorless Control of Electric Motors
• Control Systems and Identification
• Electric Motor Design and Analysis
• sensorless induction motor drive
• rotor speed estimation
• zero-speed operation
• regeneration mode
• Lyapunov stability
• variable frequency drive
• Electrical and Electronic Engineering
• Control and Systems Engineering
• Engineering