Results 111 to 120 of about 555 (246)

The use of optocouplers for achieving synchronization in thyristor controllers13;

, 1980
The optocouplers replace the synchronization transformers to simplify the synchronizing circuits in AC/DC convertors and in AC power controllers. Simple circuits are described for synchronization of 1-amp;phi; and 3-amp;phi; control circuits. The methods
Bhat, SAK
core  

A Common Ground Nine‐Level Switched Capacitor Inverter Having Quadruple Boosting Capability for Solar Photovoltaic Applications

IET Power Electronics
The nine‐level switched capacitor multilevel inverter with common ground configuration presented in this work is meant specifically for grid‐tied solar photovoltaic (SPV) applications. Normally the SPV panels produce low‐level voltage.
Muneeb Afroz Bhat, Mohammad Zaid, Adil Sarwar, Farhad Ilahi Bakhsh, Mohd Tariq, Shafiq Ahmad, Md. Rasidul Islam   +6 more
doaj   +1 more source

An Energy Autonomous Microneedle Array‐Based Sensing System for Continuous Biomarker Monitoring

Advanced Science, EarlyView.
This work presents an innovative self‐powered wearable biosensor system for real‐time monitoring of multiple biomarkers in interstitial fluid. The device integrates stainless steel‐based minimally invasive microneedles with ion‐selective membranes, enabling simultaneous Na+, K+, Ca2+, pH, and glucose detection.
Arnab Pal, Kai‐Po Fan, Sheng‐Chun Hung, Jaba Roy Chowdhury, Jun‐Hsun Chung, Meenakshi Ray, Hsiang‐Yun Hsu, Fu‐Cheng Kao, Kuei‐Lin Liu, Zong‐Hong Lin   +9 more
wiley   +1 more source

Damping potential of single-phase bidirectional rectifiers with resistive harmonic behaviour

, 2006
To reduce the voltage distortion in a distribution network, parallel (shunt) harmonic impedances (SHIs) can be strategically positioned in the network. However, to avoid the additional cost of adding SHIs to the distribution network, the SHI function can
Ryckaert, Wouter, Melkebeek, Jan, De Gussemé, Koen, Van de Sype, DM, Vandevelde, Lieven   +4 more
core   +1 more source

A simple 60‐pulse voltage source inverter using voltage reinjection strategy to improve voltage harmonics for high‐power local loads

IET Power Electronics
The voltage reinjection strategy is an effective solution to improve the voltage quality of the voltage source inverters for high‐power applications.
Saeed Najafpour, Reza Ghandehari
doaj   +1 more source

Hydrogel Stack‐Tailored Logics and High‐Fidelity Multimodal Sensors Promoted by Precisely Evaluated Ionic Migration

Advanced Science, EarlyView.
Inspired by biological ion transport, this work introduces self‐powered multifunctional sensors utilizing tailored hydrogel stacks. Optimizing ionic migration with MXenes and carbon nanotubes achieves high‐performance energy harvesting and unique logic circuit functionality.
Haoran Chen, Hongjian Zhang, Zhonghui Shen, Taeuk Eom, Hyunseung Kim, Delong He, Jinbo Bai, Geon‐Tae Hwang, Yong Zhang, Chang Kyu Jeong   +9 more
wiley   +1 more source

Piezoelectric Energy Harvesting Solutions: A Review. [PDF]

Sensors (Basel), 2020
Covaci C, Gontean A.
europepmc   +1 more source

Quantifying Structure–Property Relationships in Ferroelectric Polymers Toward High‐Performance Soft Robots

Advanced Science, EarlyView.
Here, we establish a quantitative relationship between the electrostriction coefficient (Q33) of FRPs and their interplanar spacing (d): Q33 = 100(Δd/d0+1) × Q33(s). Using this model, we fabricated high‐performance soft robots, including a biomimetic crawler (with a speed of 27 cm/s) and a butterfly (with a thrust‐to‐weight ratio of 0.71).
Ba Qin, Guotong Ding, Wanli Xing, Xiaoyu Yang, Wenxuan Li, Zhemin Chen, Shaobo Tan, Xiaoyong Wei, Zhicheng Zhang   +8 more
wiley   +1 more source

Robust Series Arc Detection for DC MEA Power Systems Using Windowed Fractal Dimension

The rapid development of more-electric transportation has led to increased use of higher voltage DC circuit architecture and battery storage. These developing technologies create a higher risk of DC arc failure resulting from component or insulation ...
Thomas, David W.P., Seeley, Danny, Sumner, Mark, Greedy, Steve   +3 more
core   +1 more source

Optimal control set expansion method for three‐phase voltage source converter with slip window selection and online parameter modification

IET Power Electronics
Finite control set model predictive control (FCS‐MPC) has been widely used in the control of three‐phase voltage source converter (VSC), but its control performance declines sharply at low sampling frequencies.
Linqiang Hu, Wanjun Lei, Zhongxiu Xiao, Xing Sun   +3 more
doaj   +1 more source