Results 31 to 40 of about 291,425 (266)

Estimation of Iron Loss in Permanent Magnet Synchronous Motors Based on Particle Swarm Optimization and a Recurrent Neural Network

Magnetism, 2023
The popularity of permanent magnet synchronous motors (PMSMs) has increased in recent years due to their high efficiency, compact size, and low maintenance needs.
Kai Xu, Youguang Guo, Gang Lei, Jianguo Zhu   +3 more
doaj   +1 more source

Parameter Optimization for Reducing Torque Ripple and Harmonic Losses of Multi-Layered Interior Permanent-Magnet Synchronous Motors

IEEE Access, 2022
In this paper, parameter optimization of multi-layered interior permanent-magnet synchronous motors for electric vehicle propulsion is carried out to improve torque ripple and efficiency at low- and high-speed regions. First, we establish a torque ripple
Sung-Bae Jun, Chan-Ho Kim, Jin Hwan Lee, Jun-Kyu Kang, Yong-Jae Kim, Sang-Yong Jung   +5 more
doaj   +1 more source

Calculation for stator loss of high-speed permanent magnet synchronous machine in torque-speed envelope and restraint approach for circulating current in windings

CES Transactions on Electrical Machines and Systems, 2018
Iron loss and copper loss are the significant parts of electrical loss of machines, which are the major parts particularly under high frequency condition. High-speed permanent magnet synchronous machines (HS-PMSM) have the benefits of high power density,
Yanan Yu, Deliang Liang, Zhe Liang, Qiji Ze   +3 more
doaj   +1 more source

Verification of Iron Loss Calculation Method using a High-Precision Iron Loss Analyzer

IEEJ Transactions on Industry Applications, 2013
SUMMARYBecause of the improved performance of power devices, the volume of the ac filter inductors used in high‐frequency PWM inverters has been reduced. However, the temperature rise in the filter inductor due to this miniaturization has become more pronounced.
Shimizu, Toshihisa, Kakazu, Keisuke, Takano, Koushi, Ishii, Hitoshi   +3 more
openaire   +1 more source

An unexpected alternative viologen electron mediator site in tungsten‐containing formate dehydrogenase

FEBS Letters, EarlyView.
An unexpected alternative interaction site for ethyl viologen was identified in formate dehydrogenase 1 from Methylorubrum extorquens. Combined mutagenesis, kinetic analysis, and docking revealed that aromatic residues near an iron–sulfur cluster enable flavin mononucleotide‐independent electron transfer, offering a framework for engineering improved ...
Eleni G. Poloniataki, Yong Hwan Kim
wiley   +1 more source

Dynamic iron loss model analysis method under high proportion new energy access

Diance yu yibiao
The fixed loss model or empirical formula model of transformer has been widely used in the line loss analysis of power system. With the large-scale access of high proportion of new energy generation, the power flow in the power system has changed from ...
WANG Yifeng, MA Xiping, CEN Bingcheng, ZHU Dandan, LIANG Hao, JIANG Tong   +5 more
doaj   +1 more source

Analysis and Design of Novel High Speed Permanent Magnet Machine Considering Magnet Eddy Current Loss

IEEE Access, 2020
In high speed permanent magnet (HSPM) machines, the computation of magnet eddy current loss is essential as these losses significantly affect the temperature of the permanent magnet (PM) and electromagnetic performance and can result in irreversible ...
Hamid Ali Khan, Faisal Khan, Naseer Ahmad, Jongsuk Ro   +3 more
doaj   +1 more source

Cell geometry and membrane protein crowding constrain Escherichia coli growth rate, overflow metabolism, respiration, and maintenance energy

FEBS Letters, EarlyView.
The physical dimensions and shape of bacterial cells define the surface area available to acquire nutrients and the volume available for synthesizing proteins and DNA. Here, we use computational systems biology to decode the importance of cell geometry as a major determinant of prokaryotic phenotype, including growth rate and metabolic efficiency. This
Ross P. Carlson, Tomáš Gedeon, Mauricio Garcia Benitez, Campbell Putnam, William R. Harcombe, Radhakrishnan Mahadevan, Ashley E. Beck   +6 more
wiley   +1 more source

An Effective and Simplified Control Strategy for Loss Minimum of Permanent Magnet Synchronous Motor on Electric Vehicles

Journal of Harbin University of Science and Technology, 2020
In order to solve the problem of the loss of iron core and saturation inductance in the optimization control of constant power and wide speed of internal permanent magnet synchronous motor for electric vehicle，a new method of minimum loss control for a ...
LIN Li, PENG Zhengmiao, WAN Bingcheng, CHEN Hongwei, CHEN Hongzhuan   +4 more
doaj   +1 more source

Temperature-Dependent Ferromagnetic Loss Approximation of an Induction Machine Stator Core Material Based on Laboratory Test Measurements

Energies, 2023
The accurate measurement and modeling of ferromagnetic material losses are vital issues during the design and analysis of electrical machines. Higher loss values can describe the manufactured rotor and stator machine plates better than the catalog data ...
Miklós Kuczmann, Tamás Orosz
doaj   +1 more source