Using transmission lines properties for converter realization

Smilovitz, D.; Singer, S.

doi:10.1109/pesc.1993.471964

Cited by 3 publications

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“…(1) can. be written: [2,3] can help when voltage magnitude matching is required, yet input and output power always equals (neglecting the constant delay), that, under total matching conditions. Some other arrangement is required for stress reduction by means of power averaging.…”

Section: Let Us Define a Delay Operator D ( T )mentioning

confidence: 99%

Current averaging networks based on transmission lines

Shmilovitz

Singer

Proceedings of ISCAS'95 - International Symposium on Circuits and Systems

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A b s t~a c i -A novel method of TransmissionLine based power processing is suggested. This paper presents the possibility to decompose pulses of high power magnitude and short duration and transform it into pulses of lower magnitude and longer duration or even t o a d.c. wave form.The basic idea is t o feed the energy into a bunch of Transmission Lines, each of them characterized by a different propagation time, then collect the energy at the output. In such a manner, fractions of the energy that were fed at the input simultaneously, arrive at the output sequentially, thus accomplishing a time averaging. I. I N T R O D U C T I O N Lately, power conversion techniques based on transmission lines such as, transmission line based L.F.R. (Loss-Free Resistor) and transmission line based converter [1,2,3], have been reported.It is well known that it is preferable to process energy in long time low power, rather than short time high power. This will not only reduce ohmic losses but also reduce stress on components, therefore allowing a decrease in the size of the system, and price of components as well as the expansion of the system's reliability.In this paper, a Transmission Line based solution for power processing is presented. The basic idea is to supply the energy to a group of transmission lines and allow fractions of the energy arrive to the load at times shifted from each other thus achieving a time averaging of the power. TRANSMISSION LINE MODELINGThe distributed model of a T.L. is shown in fig. 1. Where V+ and V-stand for the voltage waves propagating in the positive and negative direction of z respectively. If the load is matched, the model can be reduced by omitting the current source at the input. In such a case, the T.L. becomes a delay line. Let us define a delay operator D ( T ) :Eq. (1) can. be written: %(t) = D ( T ) K ( t )

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Section: Let Us Define a Delay Operator D ( T )mentioning

confidence: 99%