Results 171 to 180 of about 658,855 (214)

Nondifferential AC Choppers Based Identical Bipolar Buck–Boost AC–AC Converter Without Commutation Issue

IEEE transactions on power electronics, 2023
This article proposes a new H-bridge structured bipolar pulsewidth modulation (PWM) buck–boost ac–ac converter based on the nondifferential ac choppers.
H. Ahmed, C. Chung, Ashraf Ali Khan, Zeeshan Aleem, F. Akbar, Omar Alzaabi   +5 more
semanticscholar   +1 more source

A new battery equalizer based on buck-boost topology

2007 7th Internatonal Conference on Power Electronics, 2007
A new technique based on buck-boost topology is proposed to equalize a series-connected battery stack in this paper. The proposed scheme transfers the energy from fully charged battery cell to the weakest charged battery using buck-boost operation. This operation maintains batteries at the same charge and voltage level.
Sang-Hyun Park, null Tae-Sung Kim, null Jin-Sik Park, null Gun-Woo Moon, null Myung-Joong Yoon   +4 more
openaire   +1 more source

New topology for a single-phase buck-boost inverter

2018 IEEE Applied Power Electronics Conference and Exposition (APEC), 2018
This paper presents a new single-phase voltage source inverter based on two Buck-Boost dc-dc. The Buck-Boost inverter is driven by two 180° phase-shifted dc-biased sinusoidal references. This new topology can generate an instantaneous output voltage higher or lower than the input dc voltage without an intermediate power stage or transformer.
Andreas Mattos Pratto Correa, Telles Brunelli Lazzarin, Ivo Barbi   +2 more
openaire   +1 more source

An independent AC-DC converter operating on buck and buck-boost topology for low power harvesting

2017 IEEE International Conference on Power, Control, Signals and Instrumentation Engineering (ICPCSI), 2017
Independent powered devices harvest the ambient energies by micro generators and can perform their Operations without any continuous external power supply. Many types of micro-generators, used in the self-powered devices, are reported in the literature for harvesting different forms of ambient energies.
Syed Mujtaba Mahdi Mudassir, Shaik Mohammed Mukassir, Ahmeduddin Farooqi   +2 more
openaire   +1 more source

Derivation of the buck-boost PWM DC-DC converter circuit topology

2002 IEEE International Symposium on Circuits and Systems. Proceedings (Cat. No.02CH37353), 2003
The derivation of the buck-boost PWM DC-DC converter circuit is presented. The buck and boost converter circuits are cascaded through an inverting stage. Circuit theory and manipulation will be used to simplify the cascaded circuit into the familiar inverting buck-boost PWM DC-DC converter topology.
Brad Bryant, Marian K. Kazimierczuk
openaire   +1 more source

Topological Design and Modulation Strategy for Buck-Boost Three-Level Inverters

2007 IEEE Power Electronics Specialists Conference, 2007
To date, designed topologies for dc-ac inversion with both voltage buck and boost capabilities are mainly focused on two-level circuitries with extensions to three-level possibilities left nearly unexplored. Contributing to this area of research, this paper presents the design of a number of viable buck-boost threelevel inverters that can also support ...
Gao, Feng, Loh, Poh Chiang, Teodorescu, Remus, Blaabjerg, Frede, Vilathgamuwa, Don   +4 more
openaire   +4 more sources

A Modular Three-Phase Buck-Boost Motor Drive Topology

2020 6th International Conference on Electric Power and Energy Conversion Systems (EPECS), 2020
The voltage-source inverter (VSI) is a fundamental power electronic device to drive three-phase electrical machines with high performance. In this paper, a modular three-phase DC/Rectified AC/AC (DC/RAC/AC) inverter supplying a permanent-magnet synchronous machine (PMSM) is proposed.
Didem Tekgun, Burak Tekgun, Irfan Alan
openaire   +1 more source

A novel ZVS buck converter topology for VRM applications

2011 6th IEEE Conference on Industrial Electronics and Applications, 2011
The paper presents a novel ZVS buck converter topology. The proposed topology solves narrow duty cycle and hard switching problems of conventional buck converter in lower output voltage and higher output current. At the same times, the voltage stresses across main switches are also clamped at input voltage. In the topology, an adjustable inductor and a
openaire   +1 more source

A comparative study of different buck topologies for high efficiency low voltage applications

30th Annual IEEE Power Electronics Specialists Conference. Record. (Cat. No.99CH36321), 2003
In this paper, a comparison is performed between six different configurations of buck power converters for low voltage applications. The considered converters operate under hard and soft switching conditions and are equipped with conventional and synchronous output rectification.
C. CAVALLARO, A. CONSOLI, F. GENNARO, TESTA A.   +3 more
openaire   +4 more sources

A compact single-phase bidirectional buck-boost-inverter topology

2012 International Conference on Renewable Energy Research and Applications (ICRERA), 2012
This paper proposes a single-phase bidirectional buck-boost-inverter topology. The boosting function is achieved by using a wide range of duty cycles based on the front-end buck-boost converter characteristics. The two main switches operate at 20 kHz to generate a unipolar half-cycle sinusoidal waveform.
Minsoo Jang, Mihai Ciobotaru, Vassilios G. Agelidis   +2 more
openaire   +1 more source