This article describes a practical method for predicting the distribution of electric potential inside an electrical machine’s winding based on design data. It broadens understanding impedance in terms inter-winding behavior and allows to properly insulation system during development phase. The predictions are made frequency-dependent equivalent circuit machine which is validated by measurement...

Transient overvoltages appearing at line terminal of power transformer HV windings can cause failure of winding insulation. The failure can be from winding to ground or between turns or sections of winding. In most of the cases, failure from winding to ground can be detected by changes in the wave shape of surge voltage appearing at line terminal. However, detection of insulation failure betwee...

With changing the parameters of layer winding in transformers, capacitive characteristic coefficient of winding will be changed. Since, impulse voltage distribution (IVD) along a winding is depended on this coefficient, so analyzing this coefficient is important in transformers. This paper study and analyze a transformer with layer winding and rectangular cross-section. In this study, the influ...

In this paper motion analysis on a winding stair-climbing is investigated using our proposed rotational arm type of robotic wheelchair. For now, the robotic wheelchair is operated in an open mode to climb winding stairs by a dynamic turning, therefore, the dynamics model is required to ensure a passenger’s safety. Equations of motion based on the skid-steering analysis are developed for the tra...

In this paper it is proposed the displacement control of a bearingless induction machine (BIM) with split winding and optimized drive structure using Active Disturbance Rejection Control (ADRC). Considering that BIM multivariable, nonlinear, time-varying system coupled variables, advanced techniques can be useful in order to make operate efficiently good dynamic performance. The ADRC considers ...

The Brushless Doubly-Fed Reluctance Machine (BDFRM) has been widely investigated in numerous research studies since it is brushless and cageless there no winding on the rotor of this emerging machine. This feature leads to several advantages for machine comparison with its induction counterpart, i.e., Induction (BDFIM). Less maintenance, less power losses, also more reliability are major BDFRM ...