By analyzing the sources of energy and power loss in PWM (Pulse Width Modulation) controlled drivers of water electrolysis cells, it is possible to reduce the power dissipation and enhance the efficiency of such hydrogen production units. A PWM controlled power driver is based on a semiconductor switching element where its power dissipation might be a remarkable fraction of the total power dema...

The effort to obtain ever-increasing power density of switched-mode power supply has been limited by the size of passive components. Operation at higher frequencies considerably reduces the size of passive components, such as transformers and filters; however, switching losses have been an obstacle to high-frequency operation. To reduce switching losses and allow high-frequency operation, reson...

Due to the deregulation trend in electric power system networks, many factors have to be taken into consideration such as lack of supplying electric power, system reliability, power quality, electric system losses and voltage disturbance and profile problems. The excessive growing needs for electricity force electrical researchers to implement new approaches through the electric system. Introdu...

The system of automatic control the reactive power factor enterprise's supply is considered, in which one part transformer substations equipped with adjustable capacitor units, and second not. Its advantage comparison shown, firstly, lower requirements for its error and, secondly, calculation consumer supplier electricity made taking into account ratio energy to active energy. An estimate regul...

This paper focuses on the modeling of wind turbines equipped with direct drive permanent magnet synchronous generators for fundamental frequency power system simulations. Specifically, a procedure accounting for the system active power losses to initialize the simulation starting from the load flow results is proposed. Moreover, some analytical assessments are detailed on typical control scheme...

This paper presents the skin effect impact on active power losses in sheathless single-core cables/wires supplying nonlinear loads. There are significant conductor when current has a distorted waveform (e.g., diode rectifiers). The authors present new method for loss calculation. obtained results have been compared to IEC-60287-1-1:2006 + A1:2014 standard and based Bessel function. For all meth...