نتایج جستجو برای: capacitor switching
تعداد نتایج: 81012 فیلتر نتایج به سال:
This paper derives general topological and electrical properties common to all lossless passive soft-switching converters with defined characteristics and proposes a synthesis procedure for the creation of new converters. The synthesis procedure uses the properties to determine all possible locations of the inductor and capacitor added to achieve soft switching. Then a set of circuit cells are ...
Reduced switching loss favours Pulse Skipping Modulation mode of switching dc-to-dc converters at light loads. Under certain conditions the converter operates in discontinuous conduction mode (DCM). Inductor current starts from zero in each switching cycle as the switching frequency is constant and not adequately high. A DC-to-DC buck converter is modelled and simulated in this paper under DCM....
This paper analyzes the parasitic effects in SAR ADCs. Which achieves a significant switching energy saving when compared with set-and-down and charge-recycling switching approaches. Successive approximation technique in ADC is well known logic, where in the presented design the linearity analysis of a Successive Approximation Registers (SAR) Analog-to-Digital Converter (ADC) with split DAC str...
The quasi-linear transport equation is investigated for modeling the bipolar memory resistor. The solution accommodates vacancy and circuit level perspectives on memristance. For the first time in literature the component resistors that constitute the contemporary dual variable resistor circuit model are quantified using vacancy parameters and derived from a governing partial differential equat...
A novel pulse-width modulated (PWM) single-phase line-interactive uninterruptible power supply (UPS) based on the small dc bus capacitor is presented. The proposed system is made up of an ac chopper which includes a diode rectifier, a boost switch, a charger and an inverter. It has the features of a small dc bus capacitor, small input and output inductors, and low switching loss, and is very su...
We have studied the abrupt and hysteretic changes of resistance in MgObased capacitor devices. The switching behavior is discussed in terms of the formation and rupture of conduction filaments due to the migration of structural defects in the electric field, together with the redox events which affects the mobile carriers. The results presented in this paper suggest that MgO transparent films c...
in recent years, based on the growing importance of clean energy in comparison with conventional energy production from fossil fuels, dg systems are gradually becoming more popular all over the world. these resources solve many problem of system. however, these resources create some other problems too. one of the most problem of dgs is unwanted islanding. this paper addresses reliable passive i...
This paper presents two applications of the genetic algorithm (GA) for capacitor switching simulation studies, namely validation of the system model and determination of the worst case transients. For validating the system model, using both recorded and simulated data seems to be an efficient way. By modifying the system parameters, replaying the captured event, obtaining simulated waveforms, a...
This paper proposes an automatic discrete slow voltage controller, which is motivated towards implementation in the western Oregon system in Pacific Northwest. This part of the system is far from generators and the main voltage control devices are capacitor banks, reactor banks and LTC transformers. The project pursues a model-based approach for selecting the discrete control actions for on-lin...
In this paper a new topology is proposed for energy storage and the power distribution using Ultracapacitors in cascaded multilevel inverters. This consists of hybrid cascaded multilevel inverter (HCMI) topologies and corresponding control strategies are applied to motor drive, interfacing both dc sources and capacitor energy storage elements. For high power motor drive application this propose...
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