Results 41 to 50 of about 116,954 (322)

Matrix structure of unified mathematical model of electric AC machines at control [PDF]

E3S Web of Conferences, 2020
The matrix structure of the equations of a generalized electric alternating current machine is proposed, which, based on the Parke equations, is written in the coordinate axes of the machines rotating with the rotor speed.
Mustafayev Rauf, Yusifbayli Nurali, Hasanova Laman   +2 more
doaj   +1 more source

Sensored and sensorless speed control methods for brushless doubly fed reluctance motors [PDF]

, 2009
The study considers aspects of scalar V/f control, vector control and direct torque (and flux) control (DTC) of the brushless doubly fed reluctance machine (BDFRM) as a promising cost-effective alternative to the existing technological solutions for ...
Abad, Abad, Abad, Arnalte, Bauer, Betz, Betz, Betz, Brassfield, Datta, Dorrell, Jovanović, Jovanović, Jovanović, Jovanović, Jovanović, Jovanović, Jovanović, Jovanović, Liang, Liao, Liao, Liao, Lorenz, M. Jovanovic, McMahon, Morel, Ojo, Poza, Roberts, Saifkhani, Schulz, Takahashi, Takahashi, Wallace, Wang, Williamson, Xu, Xu, Xu, Zhi   +40 more
core   +1 more source

Efficiency Maps of Shifted Inductances Axes Permanent Magnet Synchronous Motors

World Electric Vehicle Journal, 2023
In this contribution, a tool developed for the study of the efficiency maps of shifted inductances axes permanent magnet synchronous motors (SIAPMSMs) is presented and made available to the readers.
Hussein Nasser, Yacine Amara, Ferhat Chabour, Mazen Ghandour   +3 more
doaj   +1 more source

Position estimation delays in signal injection-based sensorless PMSM drives [PDF]

, 2012
The causes of position estimation delays and their effects on the sensorless control of permanent magnet synchronous motor drives are investigated. The position of a permanent magnet synchronous machine is estimated via the injection of high frequency ...
Altomare, A., Cupertino, F., Guagnano, A., Pellegrino, Gian-Mario Luigi   +3 more
core   +1 more source

Time after time – circadian clocks through the lens of oscillator theory

FEBS Letters, EarlyView.
Oscillator theory bridges physics and circadian biology. Damped oscillators require external drivers, while limit cycles emerge from delayed feedback and nonlinearities. Coupling enables tissue‐level coherence, and entrainment aligns internal clocks with environmental cues.
Marta del Olmo, Carolin Ector, Hanspeter Herzel   +2 more
wiley   +1 more source

Hybrid photovoltaic-thermoelectric generator powered synchronous reluctance motor for pumping applications [PDF]

, 2019
The interest in photovoltaic (PV) pumping systems has increased, particularly in rural areas where there is no grid supply available. However, both the performance and the cost of the whole system are still an obstacle for a wide spread of this ...
Al-Dahifallah, Mujahed, Ibrahim, Mohamed Nabil Fathy, Rezk, Hegazy, Sergeant, Peter   +3 more
core   +2 more sources

The newfound relationship between extrachromosomal DNAs and excised signal circles

FEBS Letters, EarlyView.
Extrachromosomal DNAs (ecDNAs) contribute to the progression of many human cancers. In addition, circular DNA by‐products of V(D)J recombination, excised signal circles (ESCs), have roles in cancer progression but have largely been overlooked. In this Review, we explore the roles of ecDNAs and ESCs in cancer development, and highlight why these ...
Dylan Casey, Zeqian Gao, Joan Boyes
wiley   +1 more source

Prediction of the electromagnetic torque in synchronous machines through Maxwell stress harmonic filter (HFT) method [PDF]

, 2006
For the calculation of torque in synchronous motors a local method is analysed, based on the Maxwell stress theory and the filtered contributions due to the harmonics of the magnetic vector potential in the motor air-gap.
Popescu, M.
core   +1 more source

β‐TrCP overexpression enhances cisplatin sensitivity by depleting BRCA1

Molecular Oncology, EarlyView.
Low levels of β‐TrCP (Panel A) allow the accumulation of BRCA1 and CtIP, which facilitate the repair of cisplatin‐induced DNA damage via homologous recombination (HR) and promote tumor cell survival. In contrast, high β‐TrCP expression (Panel B) leads to BRCA1 and CtIP degradation, impairing HR repair, resulting in persistent DNA damage and apoptosis ...
Rocío Jiménez‐Guerrero, Alejandro Belmonte‐Fernández, Mónica González‐Moreno, Laura Rodríguez‐Cordero, Begoña Pérez‐Valderrama, Joaquín Herrero‐Ruíz, Francisco Romero, Carmen Sáez, Miguel Á. Japón   +8 more
wiley   +1 more source

A quantitative comparison between BLDC, PMSM, brushed DC and stepping motor technologies [PDF]

, 2016
Brushless DC machines (BLDC), Permanent Magnet Synchronous Machines (PMSM), Stepping Motors and Brushed DC machines (BDC) usage is ubiquitous in the power range below 1,5kW. There is a lot of common knowledge on these technologies.
De Viaene, Jasper, Derammelaere, Stijn, Haemers, Michiel, Stockman, Kurt, Verbelen, Florian   +4 more
core   +2 more sources