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In this paper the theory and experimental results of the Contactless Power Supply (CPS) system are presented. The system comprises of an input rectifier, an inverter with a rotary transformer connected to his output and an output rectifier. To the output of the inverter are connected capacitors, which form resonant circuits with the inductances of the transformer. Transistors in the inverter are in...
This paper proposes several alternative novel matrix converter topologies based on the structure of a dual bridge matrix converter with certain advantages over the conventional matrix converter topologies. It is demonstrated that, by utilizing 3-transistor inverter at the load side of any indirect matrix converter family could lead to a major reduction in the high performance but expensive transistor...
This paper proposes a new phase-locked-loop (PLL)-based inductive coupled contactless energy transfer (CET) analog frequency-shift keying (FSK) demodulator using a high-efficiency RF-to-dc rectifier for biomedical implanted devices. The analog FSK demodulator is composed of a modified CMOS three-stage rectifier, a voltage regulator, an FSK signal generator, and a PLL. The proposed modified single-stage...
In this paper its present a new topology for a two — quadrant converter is presented. In the AC/DC transfer mode the converter works as a rectifier with near sinusoidal input currents (RNSIC), while in the DC/AC transfer mode it works as a square-wave pulse switching inverter. Some suggestions for the converter design are given and a comparison with two- quadrant PWM converter is made. The new converter...
This paper describes the analysis and design of a DC-DC converter topology which is operational at frequencies in the Very High Frequency (VHF) band ranging from 30 MHz-300 MHz. The presented topology, which consists of a class E inverter, class E rectifier, and self-oscillating gate driver, is inherently resonant, and switching losses are greatly reduced by ensuring Zero Voltage Switching (ZVS) of...
This paper compares and analyzes two control methods (pulse width and phase shift modulation) for a new type of step-up DC/DC converters with galvanic isolation - the quasi-Z-source inverter (qZSI) based DC/DC converter. The proposed converter is suitable for applications, where the wide range of voltage gain is demanded, e.g. with renewable energy sources (fuel cells, photovoltaic cells), in telecom,...
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