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This paper presents the analysis, design and simulation results of a dc-dc LLC resonant converter fed by photovoltaic (PV) panels. In order to achieve MPPT (Maximum Power Point Tracking), a Variable Inductor is used to control the converter operation. In order to analyze the converter operation a simple dc load (resistor with fixed value) is considered and simulations results are presented considering...
This paper presents the analysis and design methodology for a LLC resonant converter controlled using two different control methods, switching frequency and VI (Variable Inductor). In order to compare both control techniques a battery charger is analyzed and simulation results are presented. In order to control the converter gain, the converter is regulated in the first case by varying the switching...
This paper presents a study of an electric vehicle (EV) with two different drive systems and three available electric motors (EMs) configurations. The EMs are BLDC (Brushless Direct Current) motors combined with a proportional-integral controller (PI). The vehicle power demand is divided between the drive systems through rules based vehicle power management control (PMC) that aims to reduce the lithium-ion...
The hybrid electric vehicle (HEV) is an alternative to reduce the engine fuel consumption due to the extra electrical power addition in the system that allows changing the engine operation point for a better efficiency region. The gear shifting strategy is a way to modify the engine operation point and it can be combined with the power management strategy to reach a better operational condition. The...
This paper presents studies and the implementation of a novel grid-connected PV system with storage. The goal of this project is to validate the operation and to determine the benefits and limitations of integrating storage with grid-connected PV systems. The objective is to evaluate the viability of using complementary electricity storage for meeting the local evening peak demands - “night-time peak...
This paper presents a simulation of an electric vehicle propulsion system. The simulation assumes BLDC motors combined with a proportional-integral controller and batteries. Regarding the longitudinal dynamics of electric vehicles (EV), models of different components and configurations are introduced and simulated. The simulations show the potential of each configuration according to the battery size...
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