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Similarly, the capacitor voltage feedback is used to damp series resonance for three-phase buck-type D-CAP in [22, 23], but compensation current feedback is not mentioned to compare.
To cancel the leakage inductance, compensating capacitors are attached in parallel or series to reduce the circulation of high reactive current (Barman et al., 2015; Houran et al., 2018). As a result, for the primary (Tx) coil of the WPT system, the main role of compensation capacitor is to reduce the VA rating of the input source.
Thus, capacitor banks themselves may be affected by reso- nance, and may fail prematurely. This may even lead to plant or feeder shutdowns. Resonance is a condition where the capacitive reactance of a system offsets its inductive reactance, leaving the small resistive elements in the network as the only means of limiting resonant currents.
Compensation current feedback and D-CAP power capacitor voltage feedback have similar effects for series resonance damping, but compensation current feedback has higher utilisation of sensors with less variables in control.
In order to achieve the resonance state, a compensation capacitor could be externally attached in series or parallel on the transmitting (primary) or receiving (secondary) side.
The switching of the shunt capacitor compensator increases the voltage at the receiving end. Thus it improves the power factor and voltage region which saves energy due to reduction of line losses. It also reduces kVA demand which in-turn reduces line current. The schematic connections of shunt capacitor compensation are shown in figure 8.
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Request PDF | On Mar 1, 2018, Liangli Xiong and others published Reactive power compensation and resonance damping for three-phase buck-type dynamic capacitor | Find, read and cite all …
Online Services Email Contactgap. A resonant circuit is required to reduce the voltage-to-current rating. As a result, high frequency and high voltage compensation capacitors are required, which increases the …
Online Services Email ContactThe compensation capacitors adopt the CORE polypropylene and foil resonant capacitor whose rated voltage is 800 V. Parameters of coils and compensation capacitors are …
Online Services Email ContactA compensation circuit uses capacitors and inductors to form a resonant circuit, which is usually called a resonant compensation circuit. The compensation topology is an …
Online Services Email ContactAbstract: Dynamic capacitor (D-CAP) is able to provide dynamic reactive power and harmonic compensation for industrial plants. Previous papers have introduced the principles and control …
Online Services Email ContactCompensation current feedback and D-CAP power capacitor voltage feedback have similar effects for series resonance damping, but compensation current feedback has …
Online Services Email ContactMagnetic resonance coupling with a compensation capacitor has been used on the primary and secondary side of the WPT system to improve power transfer efficiency. …
Online Services Email ContactFig. 2 Harmonic compensation and resonance damping when capacitor current is not included in total detected load current (a) Harmonic equivalent circuit of the system with SAPF, (b) …
Online Services Email ContactDue to the added transmission capacity, series-capacitor compensation may delay investments in additional overhead lines and transmission equipment, which can have …
Online Services Email ContactAn overview of two-element resonant compensation techniques and their characteristics under various operating conditions are presented. Also the converter and …
Online Services Email ContactThis study focuses on the series and parallel resonance active damping of three-phase buck-type D-CAP, so as to achieve better power quality control. Two virtual resistor damping methods for series resonance, D-CAP …
Online Services Email ContactThe optimal compensation capacitors are 523.6 and 451.3 nF respectively, while the resonant compensation capacitor is 372.5 nF. The measured results of efficiency and …
Online Services Email Contact1), and various film capacitors. The resonance frequency (f) of LC resonance circuits with a comb ination of capacitors and coils (inductors) is expressed by the formula f＝1/2 √LC, where C is …
Online Services Email ContactTheir deployment may cause problems associated with capacitor switching and series resonance. Capacitor failures are induced by too large voltage, current, and reactive …
Online Services Email ContactHarmonic resonance is among important aspect need to be analyzed in a capacitor bank power system installation. For industrial power system with high operating power, the resonance …
Online Services Email ContactIn order to determine the compensation capacitor under air gap variation conditions, the parameters affecting the PTE and the PTE drop ratio were analyzed depending …
Online Services Email ContactHigh-frequency planar transformers and Cockcroft–Walton (CW) rectifiers are essential for developing miniaturized and high-power-density high voltage generators
Online Services Email ContactThe most relevant multi-resonant compensation networks are the inductor-capacitor-inductor (LCL) and the inductor-capacitor-capacitor (LCC) topologies, which are …
Online Services Email ContactThe resonance between the line inductor and the DC-link capacitor is obvious. The resonant frequency is 710 Hz, which is higher than the one when the line impedance is …
Online Services Email ContactSeries and parallel resonance tend to occur and cause harmonic distortion when the distribution system contains a shunt power capacitor to compensate inductive load and …
Online Services Email ContactIn the simulation, the shunt reactive power compensation is simplified as a variable shunt capacitor C wf whose capacitance varies with the variation of the generated …
Online Services Email ContactThyristor‐controlled series capacitors (TCSCs) introduces a number of important benefits in the application of series compensation such as, elimination of sub‐synchronous resonance (SSR) …
Online Services Email ContactSubsynchronous resonance characteristics in ... resonance by proper control of series capacitor Hailian Xie1, Bin Li1, Carl Heyman2, Marcio M. de Oliveira3, Mauro Monge2 ... compensation …
Online Services Email ContactThe letter reveals two additional basic compensation topologies for resonant inductive wireless power transfer links (supplementary to the existing four) created by placing both compensation …
Online Services Email ContactSubsynchronous resonance characteristics in presence of doubly-fed induction generator and series compensation and mitigation of subsynchronous resonance by proper control of series …
Online Services Email ContactThe main reasons to use gate-controlled series capacitor (GCSC) as new controlled series compensators are to enhance power transfer capacity and improve transient stability by mitigating sub-synchronous …
Online Services Email ContactSeries compensation also improves system stability during power transfer and ensures proper load distribution between parallel lines. However, it can cause issues like sub-synchronous resonance during faults that require protection …
Online Services Email ContactC and ELS form a series resonance circuit, and the impedance of the capacitor has what is essentially a V-shape frequency characteristic, as shown in the diagram. Up until …
Online Services Email Contact2-SHUNT CAPACITOR COMPENSATION The aim of this experiment is to control the receiving end voltage during heavy loaded conditions. Shunt Capacitors are connected at the receiving …
Online Services Email ContactWith the increase in capacitor voltage transformer (CVT) operation life, CVT impedance changes, and the short-time switching of overhead lines, it is very easy to cause a …
Online Services Email ContactThe letter reveals that two additional basic compensation topologies for resonant inductive wireless power transfer links (supplementary to the existing four) may be created by …
Online Services Email ContactDynamic capacitor (D-CAP) is able to provide dynamic reactive power and harmonic compensation for industrial plants. Previous papers have introduced the principles and control …
Online Services Email ContactAbove resonance, the output amplitude falls rapidly but the phase can also change rapidly to -180 degrees. Well above resonance, the output amplitude is too small to …
Online Services Email ContactBy passing the series capacitor bank under resonance conditions. By Tripping of the generator under resonance condition. Series capacitors produced high recovery voltages across the …
Online Services Email ContactAs a result of their soft-charging and soft-switching capabilities, resonant switched-capacitor (ReSC) converters can achieve higher efficiencies and power densities than pure switched …
Online Services Email ContactHowever, the cross-coupling between the nonadjacent coils can cause the system to no longer resonate even when the compensation capacitors resonant with the …
Online Services Email ContactWhen a capacitor in the parallel circuit fails, it is usually impossible to find and disconnect the failed capacitor circuit, resulting in a precise deviation of tuning or filtering, causing a decrease in the tuning (filtering) …
Online Services Email Contact• A capacitor or group of capacitors and the source impedance have the same reactance (impedance) at a frequency equal to one of the characteristic frequen-cies created by the …
Online Services Email ContactSeries and parallel resonance tend to occur and cause harmonic distortion when the distribution system contains a shunt power capacitor to compensate inductive load and …
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