Results 61 to 70 of about 51,074 (308)

Polarization‐resolved femtosecond Vis/IR spectroscopy tailored for resolving weak signals in biological samples using minimal sample volume

FEBS Open Bio, EarlyView.
Unique biological samples, such as site‐specific mutant proteins, are available only in limited quantities. Here, we present a polarization‐resolved transient infrared spectroscopy setup with referencing to improve signal‐to‐noise tailored towards tracing small signals. We provide an overview of characterizing the excitation conditions for polarization‐
Clark Zahn, Karsten Heyne
wiley   +1 more source

Direct Flux Field Oriented Control of IPM Drives with Variable DC-Link in the Field-Weakening Region [PDF]

, 2009
This paper presents the direct flux control of an interior permanent-magnet (IPM) motor drive in the field-weakening region. The output torque is regulated by the coordinated control of the stator flux amplitude and the current component in quadrature ...
Armando, Eric Giacomo, Guglielmi, Paolo, Pellegrino, Gian-Mario Luigi   +2 more
core   +1 more source

A light‐triggered Time‐Resolved X‐ray Solution Scattering (TR‐XSS) workflow with application to protein conformational dynamics

FEBS Open Bio, EarlyView.
Time‐resolved X‐ray solution scattering captures how proteins change shape in real time under near‐native conditions. This article presents a practical workflow for light‐triggered TR‐XSS experiments, from data collection to structural refinement. Using a calcium‐transporting membrane protein as an example, the approach can be broadly applied to study ...
Fatemeh Sabzian‐Molaei, Fredrik Orädd, Konstantinos Magkakis, Magnus Andersson   +3 more
wiley   +1 more source

Methods for optimizing rotors of synchronous electric motors with permanent magnets

Известия высших учебных заведений: Проблемы энергетики
RELEVANCE of research is the most preferred method of efficient rotor synchronous motor with some magnets. Currently, synchronous electric motors with ethereal magnets are increasingly used in various fields. For each task, it is necessary to implement s
A. A. Maiorov, A. R. Safin
doaj   +1 more source

A novel spoke‐type PM motor with asymmetric rotor for low torque pulsation under MTPA control condition

IET Electric Power Applications, 2022
This article presents a novel asymmetric spoke‐type rotor structure. It is used to reduce rotor magnetic flux leakage, torque ripple and no‐load back‐EMF distortion rate while increasing the motor output torque.
Zeyu Liu, Yan Hu, Bingyi Zhang, Guihong Feng, Jiacheng Wu   +4 more
doaj   +1 more source

Overview of Position-Sensorless Technology for Permanent Magnet Synchronous Motor Systems

World Electric Vehicle Journal, 2023
In recent years, permanent magnet synchronous motors (PMSMs) have been widely used in industry. Position-sensorless control has the advantages of reducing costs and improving reliability, and is becoming one of the most promising technologies for ...
Yulei Xu, Ming Yao, Xiaodong Sun
doaj   +1 more source

Permanent Magnet minimization in PM-Assisted Synchronous Reluctance motors for wide speed range [PDF]

, 2013
This paper presents a technique to modify the rotor lamination of a permanent-magnet-assisted synchronous reluctance motor, in order to reduce the magnet volume with no side effect on performance.
Armando, Eric Giacomo, Boazzo, Barbara, Guglielmi, Paolo, Pellegrino, Gian-Mario Luigi, Vagati, Alfredo   +4 more
core   +1 more source

Single‐molecule DNA flow‐stretch assays for high‐throughput DNA–protein interaction studies

FEBS Open Bio, EarlyView.
We describe an optimised single‐molecule DNA flow‐stretch assay that visualises DNA–protein interactions in real time. Linear DNA fragments are tethered to a surface and stretched by buffer flow for fluorescence imaging. Using λ and φX174 DNA, this protocol enhances reproducibility and accessibility, providing a versatile approach for studying diverse ...
Ayush Kumar Ganguli, Mohammad Nour Alsamsam, Ugnė Bagdonaitė, Van Truc Vu, Chun‐Jen Huang, Polina Kuzhir, Mindaugas Zaremba, Aurimas Kopūstas, Marijonas Tutkus   +8 more
wiley   +1 more source

Improved rotor-position estimation by signal injection in brushless AC motors, accounting for cross-coupling magnetic saturation [PDF]

, 2009
This paper presents an improved signal-injection- based sensorless-control method for permanent-magnet brushless ac (BLAC) motors, accounting for the influence of cross-coupling magnetic saturation between the d- and q-axes. The d- and q-axis incremental
Bingham, Chris, Howe, D., Li, Y., Stone, D. A., Zhu, Z. Q.   +4 more
core   +3 more sources

Alternate Rotor Design for Line-Start Synchronous Reluctance Motor With Minimum Use of Copper

IEEE Access
Line-start synchronous reluctance motors (LSSynRM) combine the high efficiency of synchronous reluctance Motors (SynRM) with the self-starting capability of induction motors.
Moein Farhadian, Mehdi Moallem, Babak Fahimi, Behzad Mirzaeian Dehkordi, Mehdi Sahebzamani   +4 more
doaj   +1 more source