Results 81 to 90 of about 5,942,025 (304)

Control of single-phase and three-phase DC/AC converters

, 2018
In many applications of power converters, an AC voltage with a controllable/variable frequency and voltage amplitude is desired (e.g., in motor-drive applications). By contrast, in the case of grid-connected applications (e.g., photovoltaic systems), the
Keliang Zhou, Sangwongwanich, Ariya, Zhou, Keliang, Sangwongwanich, Ariya; id_orcid, Yang, Yongheng; id_orcid, Ahmed Abdelhakim, Yongheng Yang, Abdelhakim, Ahmed, Yang, Yongheng, Ariya Sangwongwanich   +9 more
core   +1 more source

3D‐Printed Actuator Powered by Liquid Crystal Elastomer Muscles at the Water–Air Interface

Advanced Materials Technologies, EarlyView.
Soft robots for unstructured environments require responsive, durable actuators. Liquid crystal elastomers (LCEs) provide large reversible deformations under thermal or optical stimuli. Direct ink writing enables fabrication of LCE actuators integrated with silicone, with mesogen chemistry and oligomers optimized for printable inks.
Cecilie Ryberg, Stefan Pendlmayr, Jan Skov Pedersen, Jens Vinge Nygaard, Jan P. F. Lagerwall, Brigitte Städler   +5 more
wiley   +1 more source

Reliability calculation of AC/DC hybrid distribution network with a solid-state transformer

The Journal of Engineering, 2019
With extensive access of distributed energy resources and DC loads, the traditional 10 kV AC distribution network has greatly increased the number of converters and reduced the reliability of power supply.
Xinxing Xu, Nengling Tai, Yan Hu, Wei Wang, Fenglei Zheng, Wenzhi He   +5 more
doaj   +1 more source

COMPARATIVE ANALYSIS OF MULTIPULSE AC-DC CONVERTERS IN VCIMD [PDF]

, 2020
: Power electronic devices are non-linear loads; the non linear nature of these switching devices causes harmonic current injection into the ac mains there by polluting the Power Quality (PQ) at the Point of Common Coupling (PCC).
M Karthika, V V Vijetha Inti
core  

Soft Actuators Integrated with Control and Power Units: Approaching Wireless Autonomous Soft Robots

Advanced Robotics Research, EarlyView.
Soft robots exhibit significant development potential in various applications. However, there are still key technical challenges regarding material improvement, structure design and components integration. This review focuses on the development and challenge of soft actuators, power components, and control components in untethered intelligent soft ...
Renwu Shi, Feifei Pan, Xiaobin Ji
wiley   +1 more source

Power quality improvements employing multipulse full-wave AC-DC converters

, 2011
In this paper, a set of full-wave AC-DC converters are investigated for power quality improvement in AC mains and DC output. A detailed classification of these full-wave AC-DC converter configurations is made in different transformer connections and ...
S. Gairola, Gairola, S., Singh, B., B. Singh   +3 more
core   +1 more source

Multimodal Human–Robot Interaction Using Human Pose Estimation and Local Large Language Models

Advanced Robotics Research, EarlyView.
A multimodal human–robot interaction framework integrates human pose estimation (HPE) and a large language model (LLM) for gesture‐ and voice‐based robot control. Speech‐to‐text (STT) enables voice command interpretation, while a safety‐aware arbitration mechanism prioritizes gesture input for rapid intervention.
Nasiru Aboki, Ilche Georgievski, Marco Aiello   +2 more
wiley   +1 more source

Model-based Predictive Torque Control for Matrix Converter Fed Induction Motor Drive with Reactive Power Mitigation [PDF]

هوش محاسباتی در مهندسی برق
Because of the inherent limitations of traditional AC-DC-AC converters, especially in electric motor drives, Matrix Converters (MCs), have attracted increasing attention as an alternative.
Matin Nabizadeh, Pegah Hamedani, Behzad Mirzaeian Dehkordi   +2 more
doaj   +1 more source

A Soft, Flexible Implant for Wireless Photothermal–Pyroelectric Neurostimulation

Advanced Science, EarlyView.
A replication strategy is used to enlarge the exposed surface area of barium titanate within flexible films with embedded carbon nanotubes, enabling efficient photothermal‐pyroelectric stimulation. Polar crystalline nanosheets show superior performance in guiding neural progenitor cells toward neuronal differentiation.
Jiang Wu, Minmin Mao, Beltzane Garcia Cirera, Hao Ye, Xiangzhong Chen, Josep Puigmartí‐Luis, Ni Qin, Salvador Pané   +7 more
wiley   +1 more source

Magnetoelectric Nanoparticle‐Based Wireless Brain–Computer Interface: Underlying Physics and Projected Technology Pathway

Advanced Science, EarlyView.
Magnetoelectric nanoparticles (MENPs) enable fully wireless, minutely invasive neuromodulation, and potentially neural recording, by converting magnetic into electric and, conversely, electric into magnetic fields, respectively, at high spatiotemporal resolution.
Elric Zhang, Max Shotbolt, Mostafa Abdel‐Mottaleb, Shawnus Chen, Victoria Andre, Jieyuan Tian, Jonathan Shulgach, Max Murphy, Brian Noga, Ping Liang, Darcy Griffin, Douglas Weber, Marta Pardo, Salvador Pane, Sakhrat Khizroev   +14 more
wiley   +1 more source