Results 61 to 70 of about 153,808 (271)
Carrier Comparison PWM for Voltage Control of Vienna Rectifier [PDF]
Journal of the Korea Academia-Industrial cooperation Society, 2011 본 논문에서는 비엔나 정류기의 전압제어를 위한 반송파 비교 PWM 방법에 대하여 논한다. 일반적으로 산업용 및 통신용 등 여러 응용분야에서 2레벨 정류기가 주로 사용되어 왔다. 하지만 2레벨 정류기는 효율을 높이고, THD를 낮추는데 한계가 있기 때문에 3레벨 정류기에 대한 연구가 진행 되어 왔다. 3레벨 정류기의 대표적인 회로가 비엔나 정류기이다. 기존의 비엔나 정류기는 대부분 전압 명령으로부터 인가 공간전압 벡터를 선택하고, 공간전압 벡터 인가시간을 직접 계산하여, 그 시간동안 전압 명령을 인가하는 공간 전압 변조 방식이 사용된다.
Byung-Chul Yoon +2 more
openaire +1 more source
Gradual volatile memristor–based artificial neurons with high uniformity for neuromorphic computing
InfoScience, EarlyView.Schematic of leaky integrate‐and‐fire artificial neurons for MNIST image classification. Abstract Artificial neurons are pivotal for neuromorphic hardware, but the development of compact and uniform devices remains challenging. Conventional volatile memristors suffer from abrupt switching, which hinders spatiotemporal consistency.
Pengtao Li +12 more
wiley +1 more source
Compact personal distributed wearable exposimeter [PDF]
, 2015 A compact wearable personal distributed exposimeter (PDE) is proposed, sensing the power density of incident radio frequency (RF) fields on the body of a human.
Joseph, Wout +5 more
core +1 more source
Direct Power Control Strategy for Three-phase Vienna Rectifier
Journal of Physics: Conference Series, 2021 Abstract Firstly, through a detailed analysis of the working principle of the voltage-type Vienna rectifier, the mathematical model of the rectifier power control is established according to the mathematical model of the Vienna rectifier based on the equivalent switch function in the d-q two-phase synchronous rotation coordinate system ...
Lan Chen +4 more
openaire +1 more source
PLANTS, PEOPLE, PLANET, EarlyView.Botanical exploration, discovery and conservation rely heavily on access to herbarium collections. Recently, digital access to label information, including georeferenced locality data, and images of herbarium specimens available online have greatly increased usage of herbarium specimen data.
Ronell R. Klopper +9 more
wiley +1 more source
Performance Improvement in Passive Backscatter Based RFID System with Low DCR Modulations [PDF]
, 2014 This paper presents application of the low Duty Cycle Ratio (DCR) modulations: isochronous Digital Pulse Position Modulation (DPPM) and anisochronous Digital Pulse Interval Modulation (DPIM) in backscatter based passive RFID communication system.
Svedek, T., Vinko, D., Zagar, D.
core +1 more source
Respirology, EarlyView.Pulmonary arterial baroreceptors reflexively stimulate sympathetic nerve activity (SNA) in response to elevated pulmonary artery pressure and distension. In pulmonary hypertension patients, changes in muscle SNA were proportional to changes in pulmonary haemodynamics following nebulised iloprost.
Michael J. Plunkett +6 more
wiley +1 more source
Power Converters of the Main Dipole and Quadrupole Magnet Strings of the Antiproton Decelerator at CERN [PDF]
, 2000 The two main power converters for the dipoles (D) and quadrupoles (Q) are presented as part of the complex power converter system of the Antiproton Decelerator.
Coraluppi, A +3 more
core
RAZVITAK TRAMVAJSKOG PROMETA GRADA OSIJEKA [PDF]
, 2016 The need for the introduction of trams in Osijek in the late 19th century was largely due to the poor connectivity between the areas of the city and the growing development of the city.
Dimter, Sanja +3 more
core +4 more sources
Alimentary Pharmacology &Therapeutics, EarlyView.Alpha‐1 antitrypsin deficiency is a genetic disease that affects the lungs and the liver. The role of the heterozygous genetic defect in the development of liver cancer in patients with cirrhosis is unclear. Our study found that carrying the Pi*MZ genotype increases the risk of developing liver cancer.
Lorenz Balcar +18 more
wiley +1 more source