Transmission line based energy recovery circuits and their application in copper vapor laser systems

Singer, S.; Shmilovitz, Doron; Ifrah, Y.; Cohen, Itzik

doi:10.1109/63.372608

Cited by 7 publications

(3 citation statements)

References 9 publications

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“…Thus, roughly estimated, is the maximum percentage of computing times possibly saved. The actual amount of time saving must be If the RUM method is applied to the transmission line-based loss-free resistor [24], [25] in which the transmission line is realized by a cascade of 12 LC units, the dimension of the formulated RUM for this LC link will be 2 2, instead of 24 24 for the MNM. The simulation speed will be remarkably improved.…”

Section: A Rum Versus Mnmmentioning

confidence: 99%

Efficient simulation of switched networks using reduced unification matrix

Feng

1999

IEEE Trans. Power Electron.

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A new and simple formulation method for switched networks in the numerical time domain is presented. Unification models of switching devices, companion models of energy-storage elements, and several straightforward circuit-manipulated operations are used in obtaining a reduced unification matrix (RUM). The feature of the constant formulated RUM is clarified, and the selection of the main parameters of unification models is illustrated. A condition of reducibility is proposed to determine how small the dimensions of a modified nodal matrix (MNM) can be reduced to. Simulation results using the RUM method demonstrate its superiority over the commonly used MNM method, not only for memory requirements, but also for computational speed. A large circuit example shows that the RUM method offers a 76.32% time savings in computation. Additionally, the RUM method possesses the merits of easy formulation, easy programming and more realistic switch modeling, as well as greater accuracy and higher time efficiency when compared with commonly used state-space approaches. These combined advantages should make the proposed RUM method very attractive in the time-domain simulation of switched networks. For large switched networks, the decided advantages are very great.

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Section: A Rum Versus Mnmmentioning

confidence: 99%

Efficient simulation of switched networks using reduced unification matrix

Feng

1999

IEEE Trans. Power Electron.

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“…Prior to the adoption of the LFR in this system, the parasitic pulses had been dissipated in a conventional resistor; otherwise it would have damaged the laser tube. By replacing the conventional resistor with an LFR (a transmission line based one), 85% of the energy was recovered [5], [6]. The LFR can also be applied in photovoltaic systems as a basic building block of a maximum power point tracker.…”

Section: Introductionmentioning

confidence: 99%

“…Another interesting application of the LFR concept was utilized for regenerative absorption and recycling of high voltage Manuscript and power (20 kV, 1 MW) narrow parasitic pulses (0.3 s) [5]. These pulses were generated in the cavity of a large cooper vapor laser due to rapid variations of the plasma characteristics during lasing process.…”

Section: Introductionmentioning

confidence: 99%

A Pure Realization of Loss-Free Resistor

Singer

Ozeri

Shmilovitz

2004

IEEE Trans. Circuits Syst. I

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Realization of a loss-free resistor element (i.e., element with resistive input characteristic and yet loss-free) by means of switched mode converters operated in discontinuous current conduction mode (DCM) is presented. Practically, the input characteristic is not pure resistive due to the ripple and filtering effects. A method which enables reduction of the ripple to negligible values and the elimination of the input filter is presented, which facilitates realization of practical circuits with nearly pure input resistive characteristic. This approach is based on the operation of a group of converters operating in power sharing interleaved mode.Index Terms-Active power factor, gyrator, loss-free resistor (LFR), low harmonics rectifier, time variable transformer (TVT), two-port power conservative, unity power factor.

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High-frequency-operated converters based on transmission lines

Shmilovitz

Singer

1996

IEEE Trans. Power Electron.

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A b s t r a c t 4 new approach to converter realization is presented. The realization is based on a topology that incorporates transmission lines as its main component. The method may have applications in systems consisting of existing transmission lines, for high frequencies, high energy pulses, spikes, and transients. Important advantages of this realization are robust construction and constant conversion ratio, as well as characteristics of resistive load at the input, which enables operation at high frequency. Using this method, pulses of 100 V amplitude and 100 ns width were converted, which is similar to operating a converter at 10 MHz.

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Transmission line based energy recovery circuits and their application in copper vapor laser systems

Cited by 7 publications

References 9 publications

Efficient simulation of switched networks using reduced unification matrix

Efficient simulation of switched networks using reduced unification matrix

A Pure Realization of Loss-Free Resistor

High-frequency-operated converters based on transmission lines

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