نتایج جستجو برای: capacitor switching

تعداد نتایج: 81012  

Journal: :Energies 2023

The high-frequency modulation method (HFM) for a switched capacitor (SC) inverter often leads to high switching loss since it increases frequency. In order reduce the frequency and in HFM SC inverter, this paper proposes novel hybrid strategy as well corresponding demo topology. limits number of switches, thus reducing significantly. Meanwhile, topology maintains merits current such low switch ...

Journal: :journal of advances in computer research 2015
abbas baghipour saeed fallahian

optimal sitting and sizing of shunt capacitor banks at the distribution networks for the purpose of power quality improvement is drawn much attention of electric power utilities in the last decades. determining the optimal number, location and sizing of capacitor using bee colony optimization algorithm (bco) is being presented in this paper. the bco algorithm is a new population based meta-heur...

2014
Roshan Kumar

This paper presents a novel low-cost, highly efficient, reliable and compact motor drive topology for residential and commercial application. The Brushless DC (BLDC) motor is a simple robust machine which has found application over a wide power and speed of ranges in different shapes and geometry. This paper briefly reviews the fundamentals behind the motor and also the different types of BLDC ...

2013
Jil sutaria Chirag chauhan

-A dc-dc converter has its applications, such as in hybrid vehicles, solar inverters, in power supplies for microprocessors etc. A bidirectional dc-dc converter can be alternately operated as a step down converter in one direction of energy flow and as step up converter in reverse direction of energy flow, in places where both the sides have voltage sources. A high voltage supply using a single...

Journal: :Lab on a chip 2013
Sung-Jin Kim Ryuji Yokokawa Shuichi Takayama

We present experiments and theory of a constant flow-driven microfluidic oscillator with widely tunable oscillation periods. This oscillator converts two constant input-flows from a syringe pump into an alternating, periodic output-flow with oscillation periods that can be adjusted to between 0.3 s to 4.1 h by tuning an external membrane capacitor. This capacitor allows multiple adjustable peri...

2014
Gaurav Srivastava Sunil kumar Goel

In this paper the control strategies of svc are described.SVC is used to stabilize the voltage profile in a grid system.In the designing of SVC there is a combination of three TSC’s and one TCR.The SVC consists of a group of shunt connected capacitor banks and inductors with fast speed of response afforded by thyristor switching. The SVC provides the required amount of reactive power compensati...

2006
Joe C. P. Liu Chi K. Tse Franki N. K. Poon Bryan M. H. Pong Y. M. Lai

A general impedance synthesizer using a minimum number of switching converters is studied in this paper. We begin with showing that any impedance can be synthesized by a circuit consisting of only two simple power converters, one storage element (e.g., capacitor), and one dissipative element (e.g., resistor) or power source. The implementation of such a circuit for synthesizing any desired impe...

2001
Andre Pittet

Absrracl--A dual two-level inverter fed open-end winding induction motor drive is proposed in this paper. A total of 64 voltage space phasor combinations are possible in this scheme as each inverter produces eight voltage space phasors. The proposed scheme produces voltage space phasor locations similar to that of a 3-level inverter. In a 3-level Inverter the series connected DC link capacitors...

2011
Luís Encarnação J. Fernando A. da Silva Sónia Ferreira Pinto Luis M. Redondo

Abstract. A new Modular Marx Multilevel Converter, MC, is presented. The MC topology was developed based on the Marx Generator concept and can contribute to technological innovation for sustainability by enabling wind energy off-shore modular multilevel power switching converters with an arbitrary number of levels. This paper solves both the DC capacitor voltage balancing problem and modularity...

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