Results 81 to 90 of about 164,121 (308)

Extended high step‐up structure for multilevel converter

IET Power Electronics, 2016
This study presents a new high step‐up multilevel converter topology. The proposed multilevel converter comprises of two dc voltage sources, several capacitors, unidirectional switches, and power diodes. The proposed topology can increase the values of input dc voltage sources substantially.
Rasoul Shalchi Alishah, Seyed Hossein Hosseini, Ebrahim Babaei, Mehran Sabahi, Asghar Zare   +4 more
openaire   +1 more source

Exceeding the solar cell Shockley-Queisser limit via thermal up-conversion of low-energy photons [PDF]

, 2013
Maximum efficiency of ideal single-junction photovoltaic (PV) cells is limited to 33% (for one sun illumination) by intrinsic losses such as band edge thermalization, radiative recombination, and inability to absorb below-bandgap photons.
Boriskina, Svetlana V., Chen, Gang
core   +2 more sources

The (Glg)ABCs of cyanobacteria: modelling of glycogen synthesis and functional divergence of glycogen synthases in Synechocystis sp. PCC 6803

FEBS Letters, EarlyView.
We reconstituted Synechocystis glycogen synthesis in vitro from purified enzymes and showed that two GlgA isoenzymes produce glycogen with different architectures: GlgA1 yields denser, highly branched glycogen, whereas GlgA2 synthesizes longer, less‐branched chains.
Kenric Lee, Dimitrios Bekiari, Sofia Doello, Karl Forchhammer   +3 more
wiley   +1 more source

Ultra High Step‐Up Soft Switching Converter Based on the Interleaved Structure

Energy Science & Engineering
A new interleaved high step‐up DC–DC converter is presented in this paper, providing very high voltage conversion, significantly lowering the voltage stress across semiconductor components, and minimizing conduction losses.
Mahdi Alizadeh, Majid Delshad, Mohammad Rouhollah Yazdani, Bahador Fani   +3 more
doaj   +1 more source

Implementation of ACR and AVR controls for high voltage gain DC-DC Converter [PDF]

, 2019
Step up power conversion is universally used in many applications. The application that uses step-up power conversion can be observed in renewable energy such as photovoltaic (PV) system, wind turbine, data center and Electric vehicle.
Jawher Al-Janabi, Omar Hameed
core  

Magnetic integration of the harmonic filter inductor for dual-converter fed open-end transformer topology [PDF]

, 2016
Many high power converter systems are often connected to the medium voltage network using a step-up transformer. In such systems, the converter-side windings of the transformer can be configured as an open-end and multi-level voltage waveforms can be ...
Bede, Lorand, Blaabjerg, Frede, Gohil, Ghanshyamsinh Vijaysinh, Kerekes, Tamas, Teodorescu, Remus   +4 more
core   +2 more sources

PARP inhibitors elicit distinct transcriptional programs in homologous recombination competent castration‐resistant prostate cancer

Molecular Oncology, EarlyView.
PARP inhibitors are used to treat a small subset of prostate cancer patients. These studies reveal that PARP1 activity and expression are different between European American and African American prostate cancer tissue samples. Additionally, different PARP inhibitors cause unique and overlapping transcriptional changes, notably, p53 pathway upregulation.
Moriah L. Cunningham, Jasibel Vasquez‐Gonzalez, Samantha M. Barnada, Salome Tchotorlishvili, Latese Jones, Ryan Maguire, Genevieve Lewis, Kinza Rizwan, Jenny Deng, Salma Koachar, Drithi Patel, Hailey Shankle, Tessa Mulders, Namra Ajmal, Charalambos Solomides, Emad S. Alnemri, Teresa F. Alnemri, Ayesha A. Shafi, Leonard G. Gomella, Wm Kevin Kelly, Steven B. McMahon, Matthew J. Schiewer   +21 more
wiley   +1 more source

An interleaved high step‐up DC–DC converter based on coupled‐inductor

IET Power Electronics
This paper proposes an interleaved coupled‐inductor high step‐up direct current (DC)–DC converter. This converter uses a coupled inductor (CI), a voltage multiplier (VM) integrated with a regenerative passive lossless clamp circuit to enhance the voltage
Kamran Karimi, Ebrahim Babaei, Mehran Karimi, Darioush Alizadeh, Seyyed Mohammad Javad Mousavi   +4 more
doaj   +1 more source

Refining efficiency in standalone proton exchange membrane fuel cell systems through gross hopper optimization-based maximum power point tracking control

Science and Technology for Energy Transition
This study introduces a novel Maximum Power Point Tracking (MPPT) technique for Proton Exchange Membrane Fuel Cell (PEMFC) systems, leveraging the Gross Hopper Optimization (GHO) algorithm to achieve enhanced performance.
Nethra K., Reddy K. Jyotheeswara, Dash Ritesh, Parida Prasanta Kumar, Swain Sarat Chandra, Dhanamjayulu C., Mahapatro Abinash   +6 more
doaj   +1 more source

Ultra high step‐up soft‐switching DC/DC converter using coupled inductor and interleaved technique

IET Power Electronics, 2023
In this paper, a new ultra high step‐up soft‐switching DC/DC converter using coupled inductor and interleaved technique is presented. The primary side of the coupled inductors in up section and down section will be charged by the input power supply.
Mohammad Maalandish, Ebrahim Babaei, Pouya Abolhasani, Meysam Gheisarnejad, Mohammad‐Hassan Khooban   +4 more
doaj   +1 more source