Sensorless Flux-Vector Control Framework: An Extension for Induction Machines

This article presents a unified control framework that combines sensorless flux-vector control and volts-per-hertz (V/Hz) control for induction machines. Within this framework, observer-based V/Hz control is shown to be a special case of flux-vector control, enabling a common implementation and analysis approach for both control methods. A linearized model is derived for control design and stability analysis. The control method is experimentally evaluated using a 2.2-kW induction machine.