نتایج جستجو برای: series capacitor
تعداد نتایج: 360083 فیلتر نتایج به سال:
Single wire experiments were performed on a low current pulse generator at Cornell University. A 220 nF capacitor charged to 15–25 kV was used to drive single wire experiments. The capacitor and wire holder were connected in series through an external variable inductor to control the current rise rate. This external series inductance was adjustable from 0.2 to 2 mH. When coupled with the range ...
Congestion Management in Electricity Markets Using Demand Response Programs and Series FACTS Devices
In today’s restructured environment, congestion management plays an essential role in power system operation. Different methods are presented and discussed in this respect for congestion management in short-term and long-term intervals. It is attempted in the present paper to investigate the impact mechanism of FACTS devices and demand response programs together with generation re-dispatch as s...
Nanostructured electrochemical capacitors (ECs) are advantageous for charge and energy storage due to their intrinsically large surface area, which contributes to a large electrostatic/double layer capacitor (Cdl). However, the intrinsically small density of states in nanostructures results in a quantum capacitor (CQ) in series with Cdl which could diminish the total device capacitance value (C...
1. First, wire up the circuit as shown in the diagram above, with the resistor, inductor, and capacitor connected in series to one another and the signal generator. Use the output of the Science Workshop 750 as the signal generator. 2. Start with the following values for resistance, inductance, and capacitance: • R = 500 Ω; L = 100 mH = 0.1 H; C = 1 μF = 1 x 10 F 3. Throughout the experiment yo...
An Improved Hybrid Active Power Filter for Power Quality Improvement in Three Phase Four Wire System
This paper presents a hybrid active power filter for a three phase four wire distribution system. The scheme consists of a zigzag transformer, single phase active power filter connected in series with the utility neutral and a coupling capacitor connected in series with a voltage source converter of the active power filter (APF). The addition of coupling capacitor permits the reduction in DC li...
Flexible Alternating Current Transmission System (FACTS) devices can regulate the active and reactive power control as well as adaptive to voltage magnitude control simultaneously, because of their flexibility and fast control characteristics. Placement of these devices in suitable location can lead to control in line flow and maintain bus voltages in desired level and so improve voltage stabil...
A method and system are proposed for a transient-free commutation of a resonant-mode array of inductors. A single capacitor is used to tune the entire array, and triacs are used to commutate the inductors. To avoid the transients, the tuning capacitor is electrically locked when it stores the whole energy of the excited circuit. This prevents the capacitor from discharge during the fast, 0.1 ms...
The capacitance range for tantalum capacitors spans from singular microfarads (uFd) through a thousand microfarads. It is an electrolytic type of capacitor that can utilize either a liquid type of electrolyte or a solid state material as the cathode connection. The anode construction utilizes the high porosity of the pressed tantalum material to create an enormous amount of surface area to prod...
abstract: the present study is an attempt to find out cultural exophoric references in iranian high-school elt textbooks and touch stone series to compare the frequency of occurrence of such references in these books. the purpose is to find out which of the series of the books under investigation impose a greater referential burden on efl learners as far as their reading comprehension of the ...
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