Results 51 to 60 of about 20,670 (208)

An eight‐switch five‐level inverter with zero leakage current

open access: yesIET Power Electronics, 2021
This paper examines a multilevel transformer‐less grid‐tied inverter topology is proposed for PV applications. Nowadays, transformer‐less inverters are more desirous due to their small filter size, cheaper and higher efficiency.
Sangeeta Kumari   +4 more
doaj   +1 more source

Control of Ripple Eliminators to Improve the Power Quality of DC Systems and Reduce the Usage of Electrolytic Capacitors [PDF]

open access: yes, 2016
The problem of voltage/current ripples has become a primary power quality issue for DC systems, which could seriously degrade the performance on both the source side and the load side and lead to reliability concerns.
Cao, X., Krstic, M., Ming, W., Zhong, Q.
core   +1 more source

Implementation of CMOS Low Dropout Voltage Regulator with Frequency divider for Improved Stability [PDF]

open access: yes, 2017
A Amplifier is a gadget that is use to intensify the flag quality. The outline of superior and stable low drop-out voltage controllers is a test these days with diminishing gadget sizes and expanding power densities.
Khan, A. N. (Abdul)   +2 more
core   +1 more source

Tumour–host interactions in Drosophila: mechanisms in the tumour micro‐ and macroenvironment

open access: yesMolecular Oncology, EarlyView.
This review examines how tumour–host crosstalk takes place at multiple levels of biological organisation, from local cell competition and immune crosstalk to organism‐wide metabolic and physiological collapse. Here, we integrate findings from Drosophila melanogaster studies that reveal conserved mechanisms through which tumours hijack host systems to ...
José Teles‐Reis, Tor Erik Rusten
wiley   +1 more source

Staircase Matrix Modulation for the Switched-Capacitor Modular Multilevel Converter With Sensor-Less Capacitor Voltage Balancing

open access: yesIEEE Open Journal of Power Electronics
Staircase modulation is a switching technique ubiquitous in multilevel inverters utilizing large number of output voltage levels. With tens of levels, the output of a multilevel inverter employing staircase modulation approaches a sinusoid without ...
Rami F. Yehia   +3 more
doaj   +1 more source

Adaptive Model Predictive Controller to Reduce Switching Losses for a Capacitor-Less D-STATCOM

open access: yesIEEE Open Journal of Power Electronics, 2020
In the post-industrial digital-economy, motors powering manufacturing have been replaced by computers powering ecommerce - with significant financial losses attributable to poor power quality (PQ).
Wesam Rohouma   +4 more
doaj   +1 more source

Benchmark of AC and DC Active Power Decoupling Circuits for Second-Order Harmonic Mitigation in Kilowatt-Scale Single-Phase Inverters [PDF]

open access: yes, 2016
This paper presents the benchmark study of ac and dc active power decoupling circuits for second order harmonic mitigation in kW scale single-phase inverters. First of all, a brief comparison of recently reported active power decoupling circuits is given,
Blaabjerg, Frede   +3 more
core   +2 more sources

NKCC1: A key regulator of glioblastoma progression

open access: yesMolecular Oncology, EarlyView.
Glioblastoma (GBM) progression is driven by disrupted chloride cotransporter homeostasis. NKCC1 is highly expressed in stem‐like, astrocytic, and progenitor cells, correlating with earlier recurrence, while overall survival remains unaffected. NKCC1 serves as a prognostic marker and potential therapeutic target, linking chloride transporter imbalance ...
Anja Thomsen   +5 more
wiley   +1 more source

Overview of molecular signatures of senescence and associated resources: pros and cons

open access: yesFEBS Open Bio, EarlyView.
Cells can enter a stress response state termed cellular senescence that is involved in various diseases and aging. Detecting these cells is challenging due to the lack of universal biomarkers. This review presents the current state of senescence identification, from biomarkers to molecular signatures, compares tools and approaches, and highlights ...
Orestis A. Ntintas   +6 more
wiley   +1 more source

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