Results 31 to 40 of about 1,605 (264)
Active Voltage Balancing of Integrated Modular Drive with Series DC-Link Capacitors
2020 IEEE Energy Conversion Congress and Exposition (ECCE), 2020 In order to reduce the size and weight of transmission cables, high direct current (DC) bus voltage is desired for electrical machine drives used in the hybrid powertrains of more-electric aircraft (MEA). An integrated modular machine drive (IMMD) with DC-link capacitors connected in series is adopted to break down the supply voltage for each drive ...
Wu, Fan +2 more
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One-Leg Half-Bridge Diode-Clamped Four-Level PWM Inverter Based on MNRV PWM
IEEE AccessThis paper introduces a one-leg half-bridge (HB) diode-clamped four-level PWM inverter incorporating the multi-neighboring reference vector pulse-width modulation (MNRV PWM) methodology.
Min-Sup Song, Hyungchul Kim
doaj +1 more source
Pediatric Blood &Cancer, EarlyView.ABSTRACT Pediatric supportive care clinical trials often involve multiple clinically important outcomes, complicating trial interpretation. Hierarchical composite endpoints (HCEs) provide a framework to integrate key outcomes according to clinical importance.
Willem H. Collier +11 more
wiley +1 more source
EnergiesConventional 5-level active neutral-point-clamped (5L-ANPC) topology and state-of-the-art 5-level hybrid active neutral-point-clamped (5L-HANPC) topology are popular for inverter applications. However, their dc-link voltage utilization is limited to only
Sze Sing Lee
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From mice to humans—divergent strategies for intestinal homeostasis and regeneration
FEBS Letters, EarlyView.Recent advances such as organoid genome editing, xenotransplantation, imaging, and whole‐genome sequencing have enabled direct studies of human intestinal stem cells (ISCs). These studies reveal species‐specific features, including slower ISC proliferation, distinct injury responses, slower somatic mutation accumulation in humans, and an inverse ...
Keiko Ishikawa +2 more
wiley +1 more source
IEEE Access, 2023 Certain modern power electronics systems require active regulation of the split DC bus capacitor voltages. The series resonant converter is suitable to be utilized as an active voltage regulator, due to its ability to operate with soft switching, and ...
Igor Lopusina +2 more
doaj +1 more source
DC-link voltage balancing in cascaded H-Bridge converters
Archives of Electrical Engineering, 2014 Abstract In this paper a DC-link voltage balancing strategy for multilevel Cascaded H-Bridge (CHB) converter is proposed. Presented solution bases on optimal choice of active vector durations in Space-Vector Pulse Width Modulation (SV-PWM). It makes it possible to DC-link voltages control and to properly generate the output voltage vector in the ...
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Closed-loop DC-link Voltage Balancing Algorithm for a Four-level π-type Converter [PDF]
IECON 2019 - 45th Annual Conference of the IEEE Industrial Electronics Society, 2019 A four-level π-type converter is a Neutral Point Clamped (NPC) multilevel converter topology for low/medium voltage applications. As the inherent issue with this topology, the DC-link capacitor voltage balancing is challenging, especially when it operates as a single-end inverter/rectifier with unity power factor.
Jun Wang 0106 +3 more
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FEBS Letters, EarlyView.Inositol pyrophosphates are energy‐rich signaling molecules that perform critical functions in cells. Three different families of phosphatases hydrolyze the β phosphate of the inositol pyrophosphate molecules: two have narrow specificities and one is promiscuous.
Ronda J. Rolfes
wiley +1 more source
Four-Level Single-Stage Single-Source Boost-Inverter
IEEE AccessThis paper presents a novel concept of a DC-AC converter that ensures AC voltage modulation on four levels using a single branch and achieves voltage boosting.
Robert Stala +9 more
doaj +1 more source