Results 61 to 70 of about 2,945 (218)

Fault Resistance Estimation and Multifault Classification in 11‐kV Distribution Networks: A Noise‐Resilient Machine Learning Framework

International Transactions on Electrical Energy Systems, Volume 2026, Issue 1, 2026.
Accurate estimation of fault resistance and reliable discrimination of fault type are foundational to the protection and self‐healing capability of medium‐voltage distribution networks, yet both tasks are severely confounded by high‐impedance faults (HIFs) whose low and variable current signatures evade conventional overcurrent and distance protection.
Jacob Wekalao, Tobias Topisia, Pramita Mishra   +2 more
wiley   +1 more source

Analysis of the Robustness of Transformerless PV Inverter Topologies to the Choice of Power Devices [PDF]

, 2016
Transformerless topologies are employed in single-phase photovoltaic inverter converters due to their small size and low weight. Avoiding the grid-side transformer requires the modulation technique and the basis topology to be accordingly changed in ...
Pigazo, Alberto, Buticchi, Giampaolo, Liserre, Marco, Jedtberg, Holger   +3 more
core   +1 more source

PV‐Fed Center‐Sourced Interleaved Multilevel Boost Converter–Fed H‐Bridge Inverter for High‐Power Applications

International Transactions on Electrical Energy Systems, Volume 2026, Issue 1, 2026.
This paper introduces a novel center‐sourced interleaved multilevel boost converter with H‐bridge inverter (CSIMBCI) that is specifically designed for high‐power photovoltaic (PV) applications. Multiple interleaved boost converter stages are arranged in parallel and centrally energized by a PV array in the proposed topology. These stages interface with
B. Manimekalai, M. Marimuthu, R. Vijay, Rodolfo Araneo   +3 more
wiley   +1 more source

Single-phase transformerless PV inverter topology with AC bypass and mid-DC-link voltage clamping

, 2017
Summarization: Transformerless PV inverters are known to generate undesirable ground leakage currents due to the lack of galvanic isolation between the PV array and the electric grid.
Κουτρουλης Ευτυχιος(http://users.isc.tuc.gr/~ekoutroulis), Sharkh, S. M(http://viaf.org/viaf/307425916), Koutroulis Eftychios(http://users.isc.tuc.gr/~ekoutroulis), Yuratich, M. A(http://viaf.org/viaf/574146998454018940369), Orfanoudakis, G. I(http://viaf.org/viaf/307425920)   +4 more
core   +1 more source

Direct current offset controller for transformerless single-phase photovoltaic grid-connected inverters [PDF]

, 2010
Limitation of direct current (DC) injection into the alternating current (AC) network is an important operational requirement for grid-connected photovoltaic (PV) systems.
A. Ahfock, L. Bowtell, Bowtell, L., Ahfock, A.   +3 more
core   +1 more source

A New Extendable Transformerless Quasi‐Resonant Step‐Up DC/DC Converter With Low Voltage and Current Stresses

Energy Science &Engineering, Volume 13, Issue 12, Page 6512-6526, December 2025.
Ultrahigh voltage gain ratio, extendable capability, three designing freedom degrees, low current stress, continuous input current, low voltage stress, common ground, load. small‐scale renewable energy applications. ABSTRACT This paper introduces a new expandable non‐isolated quadratic step‐up DC/DC converter with low voltage and current stresses as ...
Sara Hasanpour, Tohid Nouri
wiley   +1 more source

Transformerless Ac-Dc Converter

, 2012
This paper compares the recent transformerless ACDC power converter architectures and provides an assessment of each. A prototype of one of the transformerless AC-DC converter architecture is also presented depicting the feasibility of a small form factor, power supply design.
Saisundar. S., I Made Darmayuda, Zhou Jun, Krishna Mainali, Simon Ng Sheung Yan, Eran Ofek   +5 more
openaire   +2 more sources

A novel current‐source management integrated circuit applied to high‐voltage integrated gate commutated thyristor gate driver

High Voltage, Volume 10, Issue 3, Page 533-545, June 2025.
Abstract This paper presents a fully customised integrated gate commutated thyristor (IGCT) gate driver monolithic integrated circuit (GDMIC), aiming to address the many shortcomings of traditional IGCT gate driver units composed of discrete components, such as the excessive number of components, low reliability, and complex development processes.
Shiping Chen, Zhanqing Yu, Jiaxu Shi, Zhengyu Chen, Lu Qu, Jinpeng Wu, Rong Zeng   +6 more
wiley   +1 more source

A New Soft‐Switched Trans‐Inverse Step‐Up DC/DC Converter With Zero Input Current Ripple

Energy Science &Engineering, Volume 13, Issue 2, Page 714-727, February 2025.
ABSTRACT In this article, a new single‐switch high step‐up DC/DC converter with soft‐switching performance is presented for sustainable energy applications. In this circuit, zero input current ripple is obtained at a small value of the input inductance. Therefore, the ohmic loss of the input inductor will be significantly alleviated.
Sara Hasanpour
wiley   +1 more source

Single-phase transformerless unipolar switched inverters for utility-connected photovoltaic applications [PDF]

, 2007
[Abstract]: The disadvantages of using solar energy are its capital cost (which is about A$6/W), in comparison to that of conventional sources of energy (which is about A$1.80/W), and its conversion efficiency, which in commercially available ...
Sharma, Ronald
core