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This paper focuses on the design of secondary control loop in wireless EV charging system according to model calculation instead of empirical estimation or simulation attempt. To simplify the structure of secondary circuit, semi-bridgeless active rectifier is used. The analysis and modeling of semi- bridgeless active rectifier is completed by small-signal modeling method. The secondary control loop...
A radio frequency energy harvester using a series resonant circuit for voltage augmentation is presented in this work. Operation frequency is in the GSM900 uplink band (842 MHz) to supply power to on-body devices from cell phones. It is verified that augmented voltage activates a Schottky diode for obtaining a dc output of 335 mV delivering 0.51 mW to the load when the harvester is 3 cm from a cell...
In this paper, the closed loop control of LLC type of series parallel resonant converter configuration of load resonant converter and its modeling analysis is implemented using fuzzy control. The LLC type resonant converter provides high frequency operation, without any change its high efficiency, whose applications mostly in DC to DC converters. The state space modeling technique is used to determine...
For the operation of the static power converters, the experience of an expert is absolutely necessary for competitive functioning. Minor faults or defects of these equipments can lead to ravaging effects. In this paper is proposed a diagnosis method based on the analytic model which investigates the output waveforms of a three-phase rectifier supplying a variable DC drive for two types of possible...
This paper describes the simulation studies of a 3-Ø self-excited asynchronous generator (SEASG) fed RL load in conjunction with an AC/DC/AC converter fed series RLC circuit. An attempt has been made to analyze the current, drawn by the rectifier circuit due to changes in the inverter frequency and their effects on the terminal voltage of the generator have been studied in open loop control. The frequency...
This paper expounds a simulation model of a self-excited asynchronous generator (SEASG) feeding R L load in conjunction with an AC/DC/AC converter fed RLC series circuit connected at the point of common coupling (PCC). Simulation model of the proposed system have been developed by using Matlab/Simulink. The result shows that the effect of RLC series circuit when operated at variable frequency affects...
Novel interinstitutional activities in power electronics education and specialists training are proposed. Some valuable results concerning methods, research, and experimental work carried out by Tallinn University of Technology and St. Petersburg Electrotechnical University are presented. The paper is focused on the inter-disciplinary curriculum, the virtual e-learning electronic laboratory, the versatile...
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