Results 61 to 70 of about 6,578,394 (152)

RPWM selective voltage harmonic elimination method for single‐phase five‐level MPUC inverter based on cell division

IET Generation, Transmission & Distribution, 2021
The conventional selective harmonic elimination method of random pulse width modulation (RPWM) is only suitable for the two‐level inverter. Furthermore, when the harmonics below 6 kHz are selectively eliminated, it is easy to cause a low average ...
Guohua Li, Dongman Cao, Yufeng Wang
doaj   +1 more source

Real‐Time Ferroelectric Domain Wall Dynamics During Electric Poling and Depoling

Advanced Science, EarlyView.
Real‐time visualization of domain wall dynamics during alternating‐current poling, direct‐current poling, and electrical depoling in relaxor‐PT ferroelectric single crystals reveals distinct field‐dependent pathways and strong path dependence. Instant polarized light microscopy uncovers reversible domain wall nucleation, motion, and reconfiguration ...
Ziqi Wang, Zhengze Xu, Anastasia Timofeeva, Hossam Elnaggar, Sipan Liu, Yusen Pei, Reece Henry, Brendan O'Connor, Eunkyoung Shim, Franky So, Kara Peters, Xiaoning Jiang, Jun Liu   +12 more
wiley   +1 more source

Reference voltage vector based model predictive control for semicontrolled open‐winding flux‐switching permanent magnet generator system with a novel zero‐sequence current suppression strategy

IET Renewable Power Generation, 2021
This paper studies a reference voltage vector (RVV) based model predictive control (MPC) for semicontrolled open‐winding flux‐switching permanent magnet generator (SOW‐FSPMG).
Shuangshuang Zhao, Feng Yu, Xing Liu, Wei Hua   +3 more
doaj   +1 more source

From Sensing Mechanisms to System Co‐Design: Graphene‐Based Sensors and Readout Circuits

Advanced Science, EarlyView.
This review establishes a unified PS–EQ–RF framework linking graphene sensing mechanisms, native electrical outputs, and output‐specific readout circuits. Voltage‐, current‐, resistance‐, and capacitance‐type sensing systems are systematically classified to guide architecture selection, low‐noise design, system co‐design, and practical integration ...
Jinduo Zhang, Meng Chen, Guanchen Li, Ruifeng Liu, Yingxin Wang, Ziran Zhao   +5 more
wiley   +1 more source

An improved asymmetrical multi‐level inverter topology with boosted output voltage and reduced components count

IET Power Electronics, 2021
This paper presents an improved Multi‐level Inverter topology utilizing the concept of boosting‐capacitor and two DC sources with reduced switches count for generating 17‐level output.
M Saad Bin Arif, Uvais Mustafa, Marif Daula Siddique, Shahbaz Ahmad, Atif Iqbal, Ratil Hasnat Ashique, Shahrin bin Ayob   +6 more
doaj   +1 more source

A Preclinical Multifunctional Capsule Robot with Unified Diagnosis and Targeted Thermal Therapy for Gastrointestinal Diseases

Advanced Science, EarlyView.
A proof‐of‐concept multifunctional capsule robot integrates diagnostic imaging, magnetic navigation, wireless power transfer, and targeted thermotherapy for gastrointestinal applications. Magnetically guided positioning and stable wireless power enable localized thermal ablation, achieving controlled heating and high cell mortality in vitro.
Heng Zhang, Yichong Sun, Xiaoting Zhang, Chi‐Kwan Lee, Zheng Li, Yehui Li, Huarong Chen, Paul D. Mitcheson   +7 more
wiley   +1 more source

Effect of Parasitic Components in Voltage Drop and Design Consideration of the Switched Impedance Inverter

IET Power Electronics
This paper investigates the impact of parasitic elements on the performance of switched impedance inverters. This work develops a non‐ideal impedance source inverter model, enabling more accurate predictions of voltage gain, current relationships, and ...
Mohsen Hasan Babayi Nozadian, Dmitri Vinnikov, Hamed Mashinchi Maheri   +2 more
doaj   +1 more source

PWM techniques for an asymmetric multilevel binary inverter: an FPGA‐based implementation

IET Power Electronics, 2021
This paper deals with the design and implementation of the conventional Level‐Shifted‐PWM (LS‐PWM) and the PWM‐hybrid modulation techniques in a Field‐Programmable Gate Array (FPGA) development card, applicable to binary asymmetric multilevel converters;
José A. Juárez‐Abad, Jorge L. Barahona‐Avalos, Jesús Linares‐Flores   +2 more
doaj   +1 more source

Self‐Sustaining Sensing Systems: Integration Strategies and Signal–Power Matching in Energy‐Harvesting Electronics

Advanced Science, EarlyView.
Energy‐harvesting‐integrated sensors couple ambient energy conversion with sensing, processing, and wireless communication. This review organizes recent progress through integration architectures and operating principles, revisiting co‐packaged, monolithic, and co‐functional designs together with always‐on, event‐driven, and multi‐modal sensing modes ...
Taehyun Park, Ki‐Yoon Park, Yeonho Choi, Dong‐Myeong Shin, Hong‐Joon Yoon, Hocheon Yoo   +5 more
wiley   +1 more source

Impact of digital time delay on the stable grid‐hosting capacity of large‐scale centralised PV plant

IET Renewable Power Generation, 2021
Digital control system has been widely used for the inverters in PV plant. However, the effects of digital time delay of digital control system on grid‐connected PV plants have not been fully studied.
Jinhong Liu, Marta Molinas
doaj   +1 more source