Coupling capacitor secondary side
This paper presents the results of an EPRI study on development of a new method for coupling capacitor voltage transformer (CCVT) frequency response measurements from the secondary side. - Download [PDF]
(PDF) Coupling Capacitor Voltage Transformer: …
This paper presents the results of an EPRI study on development of a new method for coupling capacitor voltage transformer (CCVT) frequency response measurements from the secondary side.
Electric-Field Coupled Power Transfer System with Constant
2.1 System Structure and Working Principle. The structure of the LCL-LLC/S secondary side switchable constant current and constant voltage EC-WPT system proposed in this paper is shown in Fig. 1.The primary and secondary parallel capacitors C p1 and C p2 are used to improve the transmission capacity of the coupling structure and reduce the inductance …
switch mode power supply
These capacitors are known as "Y capacitors" (X capacitors on the other hand are used between mains live and mains neutral). There are two main subtypes of "Y capacitor", "Y1" and "Y2" (with Y1 being the higher rated type). In general Y1 capacitors are used in class 2 equipment while Y2 capacitors are used in class 1 equipment.
Input and Output coupling with Amplifiers
See the coupling transformer between Q4 and the speaker, Regency TR1, Ch 9 as an example of transformer coupling. Another method to isolate the speaker from DC bias in the output signal is to alter the circuit a bit and use a coupling capacitor in a manner similar to coupling the input signal (Figure below) to the amplifier.
Coupling Capacitor Voltage Transformer: Laboratory Tests …
short circuit is cleared at the CCVT secondary side. Simulations of CCVT performance considering two kinds of surge arresters as protection circuit were carried out. Voltage waveforms would damp out faster if a zinc oxide (ZnO) surge arrester were used instead of the …
Coupling Capacitor Voltage Transformers (CCVTs)
A basic ratio test can be carried out by exciting the primary side of the CCVT with a 10 kV source and measuring the secondary voltage with a digital multimeter. However, this supplies no measurement of phase deviation, …
Coupling Capacitor Voltage Transformers Models and
This paper presents the results of an EPRI study on development of a new method for coupling capacitor voltage transformer (CCVT) frequency response measurements from the secondary side.
Capacitor Selection for Coupling and Decoupling …
5 · Coupling capacitors. Coupling capacitors are used in electronic circuits to pass the desired AC signal and block unwanted DC components. These unwanted DC signals come from electronic devices or preceding stages of an …
Input and Output Coupling | Bipolar Junction Transistors
The voltage induced in the secondary (speaker-side) ... Again, the value of this coupling capacitor is chosen so that its impedance at the expected signal frequency will be arbitrarily low. The blocking of DC voltage from an amplifier''s output, be it via a transformer or a capacitor, is useful not only in coupling an amplifier to a load but ...
Compensation topologies for wireless power transmission system …
Magnetic resonance coupling with a compensation capacitor has been used on the primary and secondary side of the WPT system to improve power transfer efficiency. Various compensation topologies for biological applications are discussed and briefly examined in …
High-frequency capacitive wireless power transfer technologies
In these works, a matching network stage (or a voltage/current gain stage) was either missing or partially implemented on one side of the capacitive coupling (e.g., LC matching network on the secondary side only). Reference surveyed various works on the contactless CPT. In Refs. [13, 14], a capacitive coupling was applied to charging of an EV.
Optimal Wireless Power Transfer Circuit without a …
This study proposes an approach to obtain maximum power via wireless power transfer using a single primary-side capacitor. It is shown that higher power is achieved when compared to the common wireless power …
Optimal Wireless Power Transfer Circuit without a Capacitor on …
This study proposes an approach to obtain maximum power via wireless power transfer using a single primary-side capacitor. It is shown that higher power is achieved when compared to the common wireless power transfer circuit under resonance with dual (primary- and secondary-side) capacitors. This approach is divided into three phases. By choosing the …
Protection Relay for Secondary Ferroresonance Suppression in Coupling ...
Download Citation | On Sep 28, 2020, Julian Correa and others published Protection Relay for Secondary Ferroresonance Suppression in Coupling Capacitor Voltage Transformers | Find, read and cite ...
Capacitor Selection for Coupling and Decoupling Applications
5 · Coupling capacitors. Coupling capacitors are used in electronic circuits to pass the desired AC signal and block unwanted DC components. These unwanted DC signals come from electronic devices or preceding stages of an electronic circuit. ... On the flip side, tantalum capacitors are expensive and limited to low voltage applications, usually up ...
Coupling Capacitor Voltage Transformer: A Device to Correct …
Electric power utilities use the Coupling Capacitor Volt-age Transformer (CCVT) to feed measuring and protecting devices in high voltage and extra high voltage systems. It is …
Coupling Capacitor Voltage Transformers Models and
This review paper puts together complete information regarding five realistic CCVT digital models available in the literature and performs a detailed sensitivity analysis of their magnitude and angle frequency responses, as well as their influence on phasor estimation, distance protection, and fault location techniques. Coupling capacitor voltage transformers …
Correction of the Secondary Voltage of Coupling Capacitor …
the coupling capacitor voltage transformers. The CCVTs inability to reproduce the primary voltage waveform at its secondary terminal may cause some problems for distance relays. During a fault on the transmission line, the voltage collapses at the CCVT primary side and the energy stored in capacitors and inductors may produce voltage swings
Coupling capacitor voltage transformer: A model for …
In this work, an accurate coupling capacitor voltage transformer (CCVT) model for electromagnetic transient studies is presented. The model takes into account linear and …
Coupling capacitor voltage transformer: A model for …
This paper presents the results of an EPRI study on development of a new method for coupling capacitor voltage transformer (CCVT) frequency response measurements from the secondary side. The method … Expand
Digital time-domain investigation of transient behaviour of coupling ...
This paper reports a set of digital time-domain simulation studies conducted on TEHMP161A Coupling Capacitor Voltage Transformer (CCVT) of Haefely-Trench. The Electro-Magnetic Transients Program (EMTP) is used to develop the CCVT model and conduct the transient studies. The accuracy of the CCVT model is verified through comparison of the EMTP …
Coupling Capacitor Voltage Transformer: A Device to Correct …
Abstract Usually, the secondary voltage of a Coupling Capacitor Voltage Transformer (CCVT) is not a perfect replica of its primary voltage. In this study, the steps to ... line, the voltage collapses at the CCVT primary side and the energy stored in the capacitors and inductors may produce
A Novel Capacitive Power System with a Single Coupling …
coupling capacitors for conventional CPT can be eliminated. By ... of coupling capacitors with four plates to make the secondary ... voltage node b of Rx side, a virtual capacitor with respect to
An Inductive and Capacitive Combined Wireless Power …
to transfer power from the primary side to the secondary side using magnetic fields. At each side, there are only two external components connected to the coupling coils and capacitors. For the coupling coils, it is similar to the regular IPT system. However, it is important to pay attention to the coupling polarity of L 1 and L 2. The ...
A new capacitive coupler design for wireless capacitive power …
Coupling capacitors. 1. Introduction ... Fig. 13 (b) depicts the secondary-side resonant voltage and current waveforms, which represent rectifier input voltage and current waveforms as well. Additionally, the in-phase operation is succeeded for secondary-side resonant voltage and current waveforms. As a consequence of the experimental study ...
VOLTAGE TRANSFORMERS
divider used, which in turn affects their rated burden. The coupling-capacitor device uses as a voltage divider a "coupling capacitor" consisting of a stack of series-connected capacitor units, and an "auxiliary capacitor," as shown schematically in Fig. 1. The bushing device uses the capacitance coupling of a specially constructed bushing of a
An LCC‐S compensated wireless power transfer system …
equivalent compensated capacitor of the secondary side, which is composed of the SCC and the series capacitor C y. Compared with the equivalent of a single SCC, the increment of C y can effectively reduce the voltage peak of the switching device, and the details will be mentioned in Section 3. The secondary-side SAR consists of two diodes D 1 and D
Coupling Capacitor Voltage Transformer: A Device to …
J Control Autom Electr Syst (2013) 24:339–348 DOI 10.1007/s40313-013-0014-5 Coupling Capacitor Voltage Transformer: A Device to Correct its Secondary Voltage in Real Time Célio Anésio da Silva · Damásio Fernandes Jr. · …
A Coupling Capacitor Voltage Transformer Representation for ...
Abstract – In this work, a coupling capacitor voltage trans-former (CCVT) model to be used in connection with the EMTP (Electromagnetic Transients Program) is presented. A support …
Coupling Capacitor Voltage Transformer: A Device to …
The coupling capacitor voltage transformers transient response during faults can cause protective relay mal-operation or even prevent tripping. This paper presents the CCVT transient response errors and the use of artificial neural …
Capacitor Voltage Transformer (CVT Or CCVT)
The capacitor voltage transformer (CVT) is used for line voltmeters, synchroscopes, protective relays, tariff meter, etc. A voltage transformer VT is a transformer used in power systems to step down extra high voltage signals and provide a low voltage signal, for measurement or to operate a protective relay.. The performance of a Capacitor Voltage Transformer (CVT) or Capacitor …
A coupling capacitor voltage transformer representation for ...
The protection circuit is very effective in damping out transient voltages when a short cir-cuit is cleared at the CCVT secondary side. ... the secondary voltage of a Coupling Capacitor Voltage ...
Design of capacitive coupling structure for …
Then, all coupling capacitors are considered, and the equivalent circuit model is derived. Section 3 analyses the effect of the dimension parameters on the receiver''s displacement. ... and can be equivalent to the …
Correction of the Secondary Voltage of Coupling Capacitor …
This paper presents the results of an EPRI study on development of a new method for coupling capacitor voltage transformer (CCVT) frequency response measurements from the secondary side. The method … Expand
Capacitive Power Transfer
Existing capacitive power transfer (CPT) solutions either use much larger capacitors [4] or are targeted at lower power applications, such as coupling of power and data between integrated …
(PDF) On coupling with EMI capacitors
Secondary Side: Measured. Secondary Side: Calculated. ... of a capacitor and the magnetic coupling between capacitors in the EMI filters must be taken into account to ensure EMC at the system ...
Capacitive Wireless Power Transfer System With Inductorless Receiver Side
In a capacitive wireless power transfer system, due to the pF-level coupling capacitance, resonant inductors are commonly used at the primary side to boost voltage and at secondary side to boost the current. However, the inductors are bulky, in particular when it comes to integration, thereby not preferred by some space-sensitive applications like smartphones, …
Configurations of Secondary Rectifier Circuit for LLC …
In an LLC resonant converter, the zero-voltage switching (ZVS) at turn-on for the primary-side MOSFETs and zero-current switching (ZCS) at turn-off the rectifiers in the secondary-side can be achieved. Resonant operation of all switching devices in the LLC converter results in minimum switching loss and increased overall efficiency,
(PDF) Coupling Capacitor Voltage Transformer: Laboratory Tests …
This paper presents the results of an EPRI study on development of a new method for coupling capacitor voltage transformer (CCVT) frequency response measurements from the secondary side.
Design and evaluation of a compensating algorithm for the secondary ...
This study describes the design and evaluation of a compensating algorithm for the secondary voltage of a coupling capacitor voltage transformer (CCVT) in the time domain by considering the hysteresis characteristics of the core. ... (CCVT) frequency response measurements from the secondary side. The method … Expand. 59. Save.
Phase Shift Regulation Method of Electric-Field Coupling
proposes a matrix charging platform and a dynamically adjustable inductor, which matches different coupling capacitors to maintain a constant system output voltage. ... that the resonant current of the secondary side only depends on the resonant voltage of the primary side within the given the circuit parameters and DC input voltage, ...
Coupling Capacitor Voltage Transformer
In this work, laboratory tests of ferroresonance and circuit breaker switching were carried out for a 230 kV coupling capacitor voltage transformer (CCVT). The magnetic core and surge arrester nonlinear characteristics were taken into account in the model in order to improve the transient response to overvoltages. Digital simulations were performed using a CCVT model with linear …