Wireless power transfer (WPT) has attracted an ever increasing interest from both industry and academics over the past few years. Its applications vary from small power devices such as mobile phones and tablets to high power electric vehicles, and from small transfer distance of centimeters to large distance of tens of centimeters. In order to achieve a high efficiency WPT system, each circuit ...

In this article, we describe the research and development of a 3 kV active rectifier for 4 MW aerospace generator drive system demonstrator. The converter is fed by multiphase high-speed/high-frequency permanent magnet generator. main aim work to demonstrate first time feasibility an MW-class meeting future hybrid-electric propulsion requirements. A concept with multiple isolated three-phase sy...

A circuit technique that reduces the boost-converter losses caused by the reverse-recovery current of the rectifier is described. The losses are reduced by inserting an inductor in the series path of the boost switch and rectifier to control the di=dt rate of the rectifier during its turn off. The energy from the inductor after the boost switch turn off is returned to the input or delivered to ...

Abstract This paper analyzes the principle of PWM rectifier and presents a unity power factor control method of PWM rectifier. Controller used double closed-loop PI control, which inner uses three-phase input current control method controlled by unity power factor and outer controls the output DC voltage of rectifier. Voltage phase detection methods which proposed could eliminate the affection ...

A simple scheme to increase operating pulse-number and easily obtain high-quality input current waveform of three-phase diode rectifier without PWM is investigated in this paper. The topology and operation principle are described. Then, the performance is evaluated and compared with the ordinary 6-pulse rectifier by means of a 20kW setup. By referring to the experimental results, the advantages...

This paper deals with the simulation of a Boost Power Factor Correction (PFC) Converter with Electro Magnetic Interference (EMI) Filter. The diode rectifier with output capacitor gives poor power factor. The Boost Converter of PFC Circuit is analyzed and then simulated with diode rectifier. The Boost PFC Converter with EMI Filter is simulated for resistive load. The power factor is improved usi...

Conduction in inward rectifier, K+-channels in Aplysia neuron and Ba++ blockade of these channels were studied by rapid measurement of the membrane complex admittance in the frequency range 0.05 to 200 Hz during voltage clamps to membrane potentials in the range -90 to -40 mV. Complex ionic conductances of K+ and Cl- rectifiers were extracted from complex admittances of other membrane conductio...

This study aimed to investigate a multimodal modulation scheme that takes into account the wide range of output characteristics, numerous constraints, and complex working conditions in wireless charging electric vehicles. Key electrical parameters variables secondary stages vehicle power transfer (EV-WPT) systems were evaluated based on capacitive, inductive, resistive impedance modes. The limi...

Cascaded H-bridge rectifier (CHBR) is widely used in high-power fields such as STATCOM and power electric traction transformer (PETT) due to its high efficiency easy expandability. With the high-reliability operation requirements of equipment, fault-tolerance capability has gradually become a research hotspot nowadays. In order improve reliability supply, cascaded should restore soon possible a...

The field of thermotronics aims to develop thermal circuits that operate with temperature biases and heat currents just as how electronic are based on voltages electric currents. Here, we investigate a half-wave rectifier quantum two-level system (a qubit) is driven by periodically modulated difference across it. To this end present nonequilibrium Green's function technique, which extend the ti...