Q-Astec - First transient power converter using switched
... Currents are switched to the load or to the return path Parallel switching Current Paths are utilized Transient can be supported in the time that it takes to turn the FET On/Off When output current follows processor demand current, significant reduction in output capacitance can be observed ...
... Currents are switched to the load or to the return path Parallel switching Current Paths are utilized Transient can be supported in the time that it takes to turn the FET On/Off When output current follows processor demand current, significant reduction in output capacitance can be observed ...
PE3426652670
... reliable manner so that the operation of the power system is not disturbed. A typical fault protection system is built from circuit breakers (CBs), protection relays, and primary transducers, such as voltage and current transformers and auxiliary equipment. Even though the detection of faults is the ...
... reliable manner so that the operation of the power system is not disturbed. A typical fault protection system is built from circuit breakers (CBs), protection relays, and primary transducers, such as voltage and current transformers and auxiliary equipment. Even though the detection of faults is the ...
High-Bandwidth High-Temperature (250 °C / 500 °F) Isolated DC
... sensing the magnetic flux of the gapped core. In this paper, the novel current measurement concept is based on a “bidirectionally saturated current transformer” is presented in Table I, which allows fast measurement also of sinusoidal currents at high ambient temperatures of 250 ◦ C for power electr ...
... sensing the magnetic flux of the gapped core. In this paper, the novel current measurement concept is based on a “bidirectionally saturated current transformer” is presented in Table I, which allows fast measurement also of sinusoidal currents at high ambient temperatures of 250 ◦ C for power electr ...
I B.Tech ISemester (MR15 Regulations)
... 14.when ever current flowing in one coil induces EMF/Flux in same coil 15.when ever current flowing in one coil induces EMF/Flux in another coil 16.In a linear bi-lateral network the response in any element is the algebraic sum of responses caused by taking single source at a time/alone 17. The Maxi ...
... 14.when ever current flowing in one coil induces EMF/Flux in same coil 15.when ever current flowing in one coil induces EMF/Flux in another coil 16.In a linear bi-lateral network the response in any element is the algebraic sum of responses caused by taking single source at a time/alone 17. The Maxi ...
harmonic mitigation of 12 pulse drives
... constructed a 30 HP twelve-pulse drive from a standard delta delta-wye isolation transformer and standard six-pulse drive using the series bridge connection shown in figure 3. An auto transformer could have been used in place of the isolation transformer. The auto transformer costs less and requires ...
... constructed a 30 HP twelve-pulse drive from a standard delta delta-wye isolation transformer and standard six-pulse drive using the series bridge connection shown in figure 3. An auto transformer could have been used in place of the isolation transformer. The auto transformer costs less and requires ...
MP6001 - Monolithic Power System
... Where BMAX is the allowed maximum flux density (usually below 300mT) and AE is the effective area of the core. The air gap can be estimated by: Gap = ...
... Where BMAX is the allowed maximum flux density (usually below 300mT) and AE is the effective area of the core. The air gap can be estimated by: Gap = ...
LNK362-364 rev_E.indd
... practically eliminates audible noise. Vacuum impregnation of the transformer should not be used due to the high primary capacitance and increased losses that result. Higher flux densities are possible, however careful evaluation of the audible noise performance should be made using production transf ...
... practically eliminates audible noise. Vacuum impregnation of the transformer should not be used due to the high primary capacitance and increased losses that result. Higher flux densities are possible, however careful evaluation of the audible noise performance should be made using production transf ...
Study of Transformer Resonant Overvoltages Caused by
... than on the low-voltage side (due to more turns), and it is particularly high in situations where the low-voltage winding is unloaded. Thus, high transformer external overvoltages are likely to occur if the following conditions are met as follows. 1) A transient occurs on the high-voltage side with ...
... than on the low-voltage side (due to more turns), and it is particularly high in situations where the low-voltage winding is unloaded. Thus, high transformer external overvoltages are likely to occur if the following conditions are met as follows. 1) A transient occurs on the high-voltage side with ...
SMJE 2103
... • The most severe lightning strikes a phase conductor. • It produces the highest overvoltage for a given stroke current. • The lightning current magnitudes is rarely less than 10kA. • For typical overhead line surge impedance Zo of 300Ω, the lightning surge voltage will have 1500 kV. • Lightning is ...
... • The most severe lightning strikes a phase conductor. • It produces the highest overvoltage for a given stroke current. • The lightning current magnitudes is rarely less than 10kA. • For typical overhead line surge impedance Zo of 300Ω, the lightning surge voltage will have 1500 kV. • Lightning is ...
T.C. Neugebauer and D.J. Perreault, “Parasitic Capacitance Cancellation in Filter Inductors,” IEEE Transactions on Power Electronics , Vol. 21, No. 1, January 2006, pp. 282-288.
... A comparison of the performance of the two cases of capacitance cancellation is shown in Fig. 5. Fig. 5(a) shows that the system with the lower turns ratio outperforms the other system at frequencies below 6 MHz, and using a lower turns ratio will raise the self-resonant frequency from 400 kHz to 1. ...
... A comparison of the performance of the two cases of capacitance cancellation is shown in Fig. 5. Fig. 5(a) shows that the system with the lower turns ratio outperforms the other system at frequencies below 6 MHz, and using a lower turns ratio will raise the self-resonant frequency from 400 kHz to 1. ...
R225-10-1
... the line voltage has been changed by an amount equal to the calculated feeder voltage drop. The control connections described are basically illustrated in Figure 2. Setting the compensator at the correct R and X values to duplicate line conditions is accomplished by adjustment of clearly marked dial ...
... the line voltage has been changed by an amount equal to the calculated feeder voltage drop. The control connections described are basically illustrated in Figure 2. Setting the compensator at the correct R and X values to duplicate line conditions is accomplished by adjustment of clearly marked dial ...
Single-stage, single-switch input-current
... S4ICS flyback converter in Fig. 3. To facilitate the analysis of operation, Figs. 4 and 5 show topological stages and key waveforms of the variable-frequency S4ICS flyback converter in Fig. 3, respectively. To simplify the analysis, it is assumed that all semiconductor components are ideal except fo ...
... S4ICS flyback converter in Fig. 3. To facilitate the analysis of operation, Figs. 4 and 5 show topological stages and key waveforms of the variable-frequency S4ICS flyback converter in Fig. 3, respectively. To simplify the analysis, it is assumed that all semiconductor components are ideal except fo ...
ADVANCES IN INTERPRETING PARTIAL DISCHARGE TEST RESULTS FROM
... Table II shows the average and various percentiles of Qm distribution measured by 80 pF capacitors at the stator terminals of air-cooled machines rated from 2 kV to 18 kV. As the rated voltage increases, there is a consistent and marked increase in the average and 90% Qm measured. Not unexpectedly, ...
... Table II shows the average and various percentiles of Qm distribution measured by 80 pF capacitors at the stator terminals of air-cooled machines rated from 2 kV to 18 kV. As the rated voltage increases, there is a consistent and marked increase in the average and 90% Qm measured. Not unexpectedly, ...
Guidelines on the determination of the sensitivity and calibration of
... AC resistance bridge for establishing and maintenance of the ratio of currents equal to the ratio of the number of turns in the coil windings. The required ratios in the RTCC can be chosen depending on the ratio of the measured resistors. For accurate and reliable scaling of the currents, the calibr ...
... AC resistance bridge for establishing and maintenance of the ratio of currents equal to the ratio of the number of turns in the coil windings. The required ratios in the RTCC can be chosen depending on the ratio of the measured resistors. For accurate and reliable scaling of the currents, the calibr ...
Modular Multilevel DC/DC converter architectures for HVDC taps
... A tap provides the interface between the DC link and a local AC network. As the tap is commonly considered for lower than link capacity power rated applications, the AC network it connects to is typically a medium to low voltage one. As a HVDC transmission line is typically operated at very high vol ...
... A tap provides the interface between the DC link and a local AC network. As the tap is commonly considered for lower than link capacity power rated applications, the AC network it connects to is typically a medium to low voltage one. As a HVDC transmission line is typically operated at very high vol ...
microcontroller based power transformer protection
... The main intention of this project is to design a microcontroller based system that can be used in power transformer protection. The system checks the operating parameters of the transformer i.e. current and reports the quantity that is flowing through the transformer. The system is designed such th ...
... The main intention of this project is to design a microcontroller based system that can be used in power transformer protection. The system checks the operating parameters of the transformer i.e. current and reports the quantity that is flowing through the transformer. The system is designed such th ...
Transformer
A transformer is an electrical device that transfers electrical energy between two or more circuits through electromagnetic induction. Commonly, transformers are used to increase or decrease the voltages of alternating current in electric power applications.A varying current in the transformer's primary winding creates a varying magnetic flux in the transformer core and a varying magnetic field impinging on the transformer's secondary winding. This varying magnetic field at the secondary winding induces a varying electromotive force (EMF) or voltage in the secondary winding. Making use of Faraday's Law in conjunction with high magnetic permeability core properties, transformers can thus be designed to efficiently change AC voltages from one voltage level to another within power networks.Since the invention of the first constant potential transformer in 1885, transformers have become essential for the transmission, distribution, and utilization of alternating current electrical energy. A wide range of transformer designs are encountered in electronic and electric power applications. Transformers range in size from RF transformers less than a cubic centimeter in volume to units interconnecting the power grid weighing hundreds of tons.