Results 151 to 160 of about 3,116 (278)

Liquid Crystal Polymers as Intrinsically Magnetic and Programmable Soft Materials for Microrobotics

Small, EarlyView.
Liquid crystal polymers (LCPs) are proposed as intrinsically magnetic, programmable, soft materials for microrobotics. Magnetic torque‐driven manipulation of LCP microobjects is achieved and characterized in terms of the step‐out frequency, reaching ∼0.6 Hz in a ∼250 mT magnetic field. The orientation of LCP microobjects in the magnetic field and their
Alexandra Gruzdenko, Ignacio Becerra Osorio, Max de Sain, Albert P. H. J. Schenning, Jaap M. J. den Toonder, Michael G. Debije   +5 more
wiley   +1 more source

Experimental validation of MRAS sensorless direct torque control using ANN for induction motors in a pumping system. [PDF]

Sci Rep
Ech-Chaouy H, Derouich A, Mahfoud S, Mosaad MI, Tazay AF.   +4 more
europepmc   +1 more source

Review of Catenary Icing on High‐Speed Railways: Characteristics, Impact and Countermeasures

High Voltage, EarlyView.
ABSTRACT The pantograph–catenary system (PCS) is the only path for electrified railway trains to acquire energy. Catenary icing during winter is a common natural phenomenon, which usually leads to the deterioration of the current quality and severely affects the operational safety of trains.
Zheng Li, Guizao Huang, Zhijin Zhang, Yang Liu, Guoqiang Gao, Guolin Yang, Xi Yang, Guangning Wu   +7 more
wiley   +1 more source

Predictive temperature control of electric two wheeler hub motor using gradient aware neural regulation with degradation tracking and fault tolerant multi condition torque adaptation. [PDF]

Sci Rep
Deshmukh S, Lokhande N, Yeolekar S.
europepmc   +1 more source

Practical aspects of instantaneous power control of inductionmachines

High performance induction machine control is usually implemented using field oriented control (FOC) or direct torque control (DTC). These strategies have their strengths and weaknesses.
Terrence Summers (21136547), B. J. Cook (21294326), S. J. Henriksen (21294323), R. E. Betz (21274175)   +3 more
core  

Optimal Torque Control Performance of DTC of 5-Phase Induction Machine

, 2013
In this paper, optimal voltage vector selection for high-performance of Direct Torque Control (DTC) of five-phase induction machine is presented.
Abdul Karim, Kasrul, Ibrahim, Zulkifli, Jidin , Auzani, Said, Mohamed Azmi, JOPRI, MOHD HATTA, Lourdes Victor Raj, Logan Raj   +5 more
core  

A Control Strategy for Variable Speed Condenser Based on Doubly‐Fed Machine

IET Smart Energy Systems, EarlyView.
This paper proposes a variable speed condenser (VSC) control strategy based on a doubly fed machine. It can be installed in PV stations and wind farms to enhance the grid‐connection performance of renewable energy power plants. ABSTRACT The lack of active power support capability in power systems with large‐scale renewable energy integration has become
Jian Zhang, Wenfeng Li, Huadong Sun, Wei Wei, Zhiqiang Li, Zhichen Geng   +5 more
wiley   +1 more source

Enhancing start-up and torque in Darrieus VAWTs through a novel plain gurney flap design. [PDF]

Sci Rep
Eltayeb W, Somlal J, SirElkhatim M, Yedukondalu G, Srinath A.   +4 more
europepmc   +1 more source

The predatory behavior of ants: an impressive panoply of morphological adaptations

Insect Science, EarlyView.
This review focuses on predation in ants, showing the wide diversity of cases from solitary foraging to group hunting tactics, as well as the evolution of mandible shape frequently adapted to capture specific prey. Although most ants are generalist feeders, finding their sugary substances directly on plants or indirectly via sap‐sucking insects, some ...
Alain Dejean, Xim Cerdá, Jérôme Orivel, Frédéric Azémar, Alexander L. Wild, Bruno Corbara, Axel Touchard   +6 more
wiley   +1 more source

Stability enhancement via speed adaptation and efficiency improvement for induction machine. [PDF]

Sci Rep
Wogi L, Joy SI, Morawiec M, Ayana T, Wilczynski F, Barta J.   +5 more
europepmc   +1 more source