In this paper the voltage and current stress of a delta-connection of three single-phase boost-type unity power factor rectifier modules ( -Rectifier) is analyzed in order to perform a design comparable to a direct threephase three-level six-switch unity power factor (conventional) rectifier system. The conduction losses of the power semiconductors are calculated using analytical approximations...

1PG scholar, Dept of Electrical Engineering, A.U. College of Engineering (A), Andhra Pradesh, India. 2 Professor, Dept of Electrical Engineering, A.U. College of Engineering (A), Andhra Pradesh, India. ---------------------------------------------------------------------***--------------------------------------------------------------------Abstract A dual bridge rectifier topology consisting of...

Three three-phase, single-switch, high-powerfactor rectifier implementations were evaluated on a comparative basis. Specifically, the discontinuousconduction-mode boost rectifier with a 5-harmonic-trap filter, the discontinuous-conduction-mode boost rectifier with a harmonic-injection circuit, and the multi-resonant, zero-current-switching buck rectifier were compared with respect to their effi...

In this paper three single-phase, high-power-factor rectifier implementations were evaluated on a comparative basis. Specifically, a zero-voltage-switching continuousconduction-mode boost rectifier, a zero-current-zero-voltageswitching continuous-conduction-mode boost rectifier, and an interleaved variable-frequency discontinuous-conduction-mode boost rectifier were compared with respect to the...

A technique which improves the performance of the boost converter by reducing the reverse-recovery-related losses in the boost switch and rectifier with an active snubber that is implemented with a minimum number of components is presented. This minimum-component-count snubber consists of a snubber inductor, an auxiliary switch, and a rectifier. The proposed technique reduces the reverse-recove...

A new current mode precision rectifier is presented. This circuit provides precision rectification for wide range of input signal with low temperature sensitivity. It can work as full wave rectifier as well as half wave rectifier with controllability on action. It can amplify rectified current signal by a bias voltage. Direction of the output current signal can also be controlled by changing th...

The three-phase three-level ∆-Rectifier is formed by a delta-connection of single-phase three-level PWM rectifier modules and does provide the full rated output power also in case of a mains phase loss. Furthermore, the system shows a low harmonic content of the mains phase currents if the modulation is with respect to the formation of a maximum zero-sequence component of the module input curre...

* Christian Doppler Laboratory for Anthropogenic Resources, Vienna University of Technology, Karlsplatz 13/226, 1040 Vienna, Austria ** Institute of Chemical Engineering, Vienna University of Technology, Getreidemarkt 9/166, 1060 Vienna, Austria ° ENET Energy Units for Utilization of non Traditional Energy Sources, VŠBTechnical University of Ostrava, 17. listopadu 15, 708 33 Ostrava-Poruba, Cze...

A. Benz1, Ch. Deutsch1, G. Fasching1, K. Unterrainer1, A. M. Andrews2, P. Klang2, W. Schrenk2, and G. Strasser2 1 Photonics Institute and Center for Microand Nanostructures, Vienna University of Technology, Gusshausstrasse 29/387, 1040 Vienna, Austria 2 Institute of Solid-State Electronics and Center for Microand Nanostructures, Vienna University of Technology, Floragasse 7/362, 1040 Vienna, Au...