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1.
PSpice simulations for single-phase rectifiers for testing DC fuses
Adrian Plesca, Costica Nituca, Gabriel Chiriac, Zhiyuan Liu, Yingsan Geng, 2019, original scientific article

Abstract: In this article, simulations were realized for different power rectifiers used for testing DC fuses. Using the OrCAD PSpice software, a single-phase uncontrolled bridge rectifier and a single-phase controlled bridge rectifier are simulated for different loads. From the data analysis, some important conclusions were realized regarding the form of the temperature waveforms in transient conditions and quasisteady state thermal conditions.
Keywords: Power Rectifiers, Simulation, PSpice, DC fuse
Published in DKUM: 05.12.2023; Views: 180; Downloads: 3
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2.
Pantograph driven with a linear induction motor with adaptive fuzzy control
Costica Nituca, Gabriel Chiriac, 2019, original scientific article

Abstract: This article presents an adaptive fuzzy control for a linear induction motor, which is used to control the vertical movement of a pantograph, which supplies an electric locomotive from a contact line. The system has the goal of eliminating all the discontinuity on the route, the resonance phenomenon, the separation of the pantograph head from the contact wire, and electric arches. The simulations demonstrate functional control of the pantograph driven with a linear induction motor system using fuzzy control techniques.
Keywords: linear induction motor, fuzzy control, locomotive pantograph, simulation
Published in DKUM: 05.12.2023; Views: 103; Downloads: 3
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3.
Geometry design and analysis of an electric bus for the interior ther-mal modelling
Costica Nituca, Gabriel Chiriac, Georgel Gabor, Ilie Nucǎ, Vadim Cazac, Marcel Burduniuc, 2021, original scientific article

Abstract: The heating, ventilation and air-conditioning (HVAC) system represents the main auxiliary load for any type of bus. Being the most significant energy-consuming auxiliary load for the electric bus, it must be given special attention in an electric bus system design. To study the heat transfer and thermal optimization for passenger comfort in the electric bus computer-aided design (CAD) is used. The geometry of an electric bus interior is designed considering the main components of the vehicle: passenger cabin, driver’s cabin, windows, walls, and seats. Materials of the same type as those used in the real bus are considered for the geometry model. Based on the heat transfer theory, a thermal model and simulations are made for the heat transfer inside the electric bus. The simulated data are compared with measurement data, and based on these, it can be concluded that the thermal model of the electric bus can be validated and used further for a wide variety of thermal simulation types.
Keywords: heat transfer, electric bus, passenger comfort, geometry design, thermal modelling
Published in DKUM: 13.11.2023; Views: 135; Downloads: 3
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