A zero-voltage, zero-current switching (ZVZCS) PWM DC-DC power converter with secondary active rectifier tested as a dc current source for arc welding is described in this paper. The soft switching DC-DC converter consists of high frequency inverter, high frequency power transformer and controlled output rectifier with new secondary energy recovery turn-off snubber. Circulating current in the c...

Euler-Lagrange (EL) model of voltage source PWM rectifier is set up based on its model in synchronous dq coordinates. Passivity based controller is designed on the basis of passivity and EL model of voltage source PWM rectifier. Three switching function are educed by passivity based controller. A switching function is only realized in engineering consequently. Voltage source PWM rectifier using...

This paper presents an improved three-phase PFC power rectifier with a three-phase diode rectifier cascaded four-switch boost converter. Its operating principle contains the operating principle of two conventional three-phase PFC power rectifiers: one switch boost converter type and a two switch boost converter type. The operating characteristics of the four switch boost converter type three-ph...

The power transfer efficiency of energy harvesting systems is strongly dependent on the power conditioning circuits, especially rectifiers. The voltage drop across rectifier and its leakage current can drastically influence the efficiency. The hybrid energy harvesters impose even more severe constraints on the rectifier. The low Vth transistors and bulk regulation technique are used in this wor...

The power supply analysis and design results of Sherman and Hamacher are extended to include approximate solutions to the nonlinear equations that define the rectifier turn-on angles. Additionally, peak rectifier current solely as a function of ripple factor, as well as the inverse relationship, i.e., ripple factor as a function of peak rectifier current, are also provided. Simplified exact equ...

A low-temperature (LT) grown InAs epi-layer has been applied as the gate to the dual-material structure of lattice-matched InGaP on GaAs, to make a high-temperature power rectifier. The LT molecular beam epitaxy technique enables the formation of an abrupt interface between InAs and InGaP. This heterojunction rectifier utilises the strong thermal stability of the InAs=InGaP heterojunction and t...

This paper is concerned with the design and simulation of a pulse width modulation (PWM) rectifier for three-phase Permanent Magnetic motor drive. Based on the mathematical model of PWM rectifier, the dual-close-loop engineering design with decoupled feed-forward control is applied in the 3-phase voltage source rectifier. The objective to be reached is to realize unity power factor at the input...

Abstract – Power factor corrected rectifiers are new tendency in development of power supplies. This paper presents a brief review of some high power rectifiers structures and provides an assessment of each analyzed technology. As contribution, a novel hybrid high power rectifier topology is proposed and analyzed. An active unidirectional three phase rectifier is associated in parallel with a t...

In this work, an input-powered AC/DC CMOS bridge rectifier (CBR) is proposed using 0.18 μm CMOS process. It is based on a simple bridge connected full wave rectifier, without an external dc voltage to turn-ON. The rectifier may be used for energy harvesting applications with a typical output of relatively low-amplitude input and low frequency of ac voltages. The proposed CBR achieves a maximum ...

The proposed 12-pulse controlled rectifier is used to supply high power industrial loads. It can regulate the output dc voltage; Its ability to effectively and cheaply mitigate the harmonics on the ac side has ensured its dominance in the industry even as active front ends become cheaper and more reliable. Despite its many benefits, the 12pulse controlled rectifier is not able to reduce the ac-...