Silicon nanowire (SiNW) arrays were produced by electroless method on polycrystalline Si substrate, in HF/ AgNO3 solution. Although the monocrystalline silicon wafer is commonly utilized as a perfect substrate, polycrystalline silicon as a low cost substrate was used in this work for photovoltaic applications. In order to study the influence of etching time (which affects the SiNWs length) on d...

This paper offers a complete and verified model of DC trolleybus grids examines the effect common modelling assumptions made in literature by using simulations, as well bus substation measurements from grid Arnhem, Netherlands. An equivalent for overhead line impedance is offered taking into account single impedance, supply return lines, parallel connections between them. A case study shows tha...

in this study, a novel variable impedance control for a lower-limb rehabilitation robotic system using voltage control strategy is presented. the majority of existing control approaches are based on control torque strategy, which require the knowledge of robot dynamics as well as dynamic of patients. this requires the controller to overcome complex problems such as uncertainties and nonlinearit...

We describe a feedback-controlled active mechanical probe which can achieve a very low mechanical impedance, uniformly over a wide frequency range. The feedback produces a state of quasi-resonance which transforms the probe into a source of force used to excite an unknown load, resulting in a precise measurement of the real and imaginary components of the load impedance at any frequency. The in...

silicon nanowire (sinw) arrays were produced by electroless method on polycrystalline si substrate, in hf/ agno3 solution. although the monocrystalline silicon wafer is commonly utilized as a perfect substrate, polycrystalline silicon as a low cost substrate was used in this work for photovoltaic applications. in order to study the influence of etching time (which affects the sinws length) on d...

Under the traditional droop control, hybrid energy storage system cannot take advantage of respective merits battery and supercapacitor for frequency coordination, which shortens life. Because single-phase inverter load, second harmonic current is generated in front-stage converter when output power pulsates at twice voltage frequency. This paper proposes a strategy coordination suppression bas...

This paper deals with the issues of computation nonlinear load harmonic currents in presence external distortions based on real measurements help passive harmonic. Such values are necessary when modeling an equivalent as current sources distortions. The filter allows to separate and internal distortions, which is determining a single consumer. influence various parameters load, such filter, imp...