Zobrazeno 1 - 10
of 79
pro vyhledávání: '"Dan Lascu"'
Publikováno v:
Sensors, Vol 24, Iss 2, p 557 (2024)
This paper aims to outline the process of dimensioning a controller tailored for a fourth-order step-down converter. In order to conduct a thorough small-signal analysis, it is imperative to find the state–space model in matrices form. Given its fo
Externí odkaz:
https://doaj.org/article/bacca24ebe5446608a2c40bf9e912856
Publikováno v:
Sensors, Vol 24, Iss 2, p 696 (2024)
The paper introduces a step-down converter that exhibits a static conversion ratio of cubic nature, providing an output voltage which is much closer to the input voltage, and at the same duty cycle, compared to a wide class of one-transistor buck-typ
Externí odkaz:
https://doaj.org/article/cb2f1b5a1c60439a890e8f03750c91c5
Publikováno v:
Applied Sciences, Vol 12, Iss 1, p 178 (2021)
In this paper, a new hybrid SEPIC dc-dc converter with coupled inductors suitable for photovoltaic applications is presented. First, the way how the new topology was derived will be presented, continuing with its analysis and design equation as a sta
Externí odkaz:
https://doaj.org/article/e9a9dc39f2534596ba3dca6a82aaf151
Autor:
Dan Lascu, Gabriela Ileana Sebe
Publikováno v:
Mathematics, Vol 9, Iss 3, p 255 (2021)
We investigate the efficiency of several types of continued fraction expansions of a number in the unit interval using a generalization of Lochs theorem from 1964. Thus, we aim to compare the efficiency by describing the rate at which the digits of o
Externí odkaz:
https://doaj.org/article/7d3b144d5e6a4501ac01126a81795070
Publikováno v:
Energies, Vol 12, Iss 2, p 252 (2019)
A new hybrid step-up converter suitable in applications where large conversion ratios are needed is presented. The topology is still simple, containing only one transistor and three diodes. A detailed dc and ac analysis is performed and all design eq
Externí odkaz:
https://doaj.org/article/a0efdd0929ce48e5990ecde8cbae182b
Publikováno v:
Energies, Vol 11, Iss 3, p 663 (2018)
A bifurcation study for dc-dc converters operated in DCM is performed using an accurate method. When applying classical techniques significant difficulties are encountered in the calculations. For example, using the averaging method the validity of t
Externí odkaz:
https://doaj.org/article/e6b9548857474b3a903f3bd82eeb30fb
Publikováno v:
Energies, Vol 11, Iss 1, p 36 (2017)
This paper proposes a novel model for a PV cell with parameters variance dependency on temperature and irradiance included. The model relies on commercial available data, calculates the cell parameters for standard conditions and then extrapolates th
Externí odkaz:
https://doaj.org/article/6d049c40285c4eddbc7b647e3723ca38
Publikováno v:
Journal of Electrical and Electronics Engineering, Vol 2, Iss 1, Pp 193-197 (2009)
The paper presents hardware and softwareaspects regarding an E-learning approach of resonantac converters. Built on LabVIEW and accompanied bya switching board interface, the setup allows acomprehensive study by remote controlling andperforming real
Externí odkaz:
https://doaj.org/article/1f66b68aec484edd87ec3740fa7e3e4c
Publikováno v:
Journal of Electrical and Electronics Engineering, Vol 1, Iss 1, Pp 205-208 (2008)
The paper presents hardware and softwareaspects regarding design and LabVIEW control of aswitching board interface used in distance learning.Finally a relay matrix is controlled according to a desired32-bit word sequence. This is intended in studying
Externí odkaz:
https://doaj.org/article/e22ff9cd9f084e17bf160bd97c5a2694
Autor:
Dan Lascu
Publikováno v:
The Scientific World Journal, Vol 2014 (2014)
We consider a family {τm:m≥2} of interval maps which are generalizations of the Gauss transformation. For the continued fraction expansion arising from τm, we solve a Gauss-Kuzmin-type problem.
Externí odkaz:
https://doaj.org/article/a35d30abcd064a0991050bdcd73bd927