Experimental study of the VFD's speed stabilization processes under torque disturbances

<span lang="EN-US">Maintaining speed with various jumps and changes in load torque is one of the main tasks variable frequency drives (VFD). The article considers operation VFD under influence periodic perturbations amplitude. dependence transient function family characteristics associated it on stator voltage slip underlies methodology for experimental studies such drives. traditional method based response to harmonic stimulation works well a non-linear system. In course work, was found that introduction dynamic positive feedback (DPF) allows compensate disturbances varying Experiments sinusoidal change have shown effectiveness introducing DPF front conventional sensorless control systems (vector scalar).</span>