Results 71 to 80 of about 5,321 (221)

Experimental Evaluation on the Influence of RCD Snubbers in a 3-Level Thyristor Based MLCR CSC

Journal of Engineering, 2016
Multilevel current reinjection (MLCR) concept provides self-commutation capability to thyristors, enabling thyristor based current source converters (CSC) to operate under negative firing angle. It also lowers the input current harmonic distortion.
Bhaba P. Das, Neville R. Watson, Yonghe Liu   +2 more
doaj   +1 more source

A novel passive snubber soft-switching inverter

Dianzi Jishu Yingyong, 2018
An improved simple passive snubber inverter is proposed in order to solve the problem of complicated snubber circuit in the traditional soft-switching topology. Only a few passive components are used in the novel topology.
Wang Xiaobiao, Qiu Jiaxiong
doaj   +1 more source

Ringing Noise Reduction Method for High‐Speed GaN Switching Converter

physica status solidi (a), Volume 222, Issue 23, December 2025.
The noise reduction circuit for decreasing the ringing voltage peaks in the switching converter with GaN‐based high electron mobility transistors is proposed. First, the location of the stray inductance generating the ringing noise is investigated using radiated emission measurements, and the additional capacitor is inserted into the circuit in ...
Toshihide Ide, Takahiro Gotow, Ryosaku Kaji, Katsumi Furuya, Hisashi Yamada   +4 more
wiley   +1 more source

Robust Ferroelectricity in Micrometer–Thick Ce:HfO2 Films

Advanced Electronic Materials, Volume 11, Issue 19, November 18, 2025.
This manuscript presents a 3–µm–thick Ce:HfO2 ferroelectric film with distinctive {111} –preferred, single–crystal–like columnar grains with embedded nanopores. Raman characterizations reveal that the film contains an orthorhombic phase fraction of ≈21% (25 °C) and exhibits a Tc of ≈400 °C.
Takaaki Miyasako, Saki Ishihara, Shingo Yoneda, Tadasu Hosokura   +3 more
wiley   +1 more source

Will the Establishment of a National Park Protect More Suitable Habitats for the Qinling Golden Snub‐Nosed Monkey?

Ecology and Evolution, Volume 15, Issue 11, November 2025.
The protection gap of high‐suitability habitat patches in national parks has decreased by 36.94%, compared with nature reserves. The loss of high‐suitability habitat patches in natural development scenario, with decreased 181 km2 in national park scenario by 2030. ABSTRACT The Qinling Mountains, recognized as a biodiversity hotspot, are included in the
Tong Wu, Xiaoxiao Shu, Xiaowei Wang, Haitao Zhao, Li Zhao, Shuaibin Shang, Yan Wang, Wei Li, Yi Ren, Weiwei Fu, Shujun He, Daibo Zhu, Bin Guo, Guiyuan Zhang, Chengliang Wang   +14 more
wiley   +1 more source

Neandertal Cold Adaptation: Technological, Anatomical, and Physiological Responses to Cold Stress in One of Our Closest Fossil Relatives

American Journal of Human Biology, Volume 37, Issue 10, October 2025.
ABSTRACT Neandertals occupied western Eurasia for over 100 000 years, repeatedly enduring climates that ranged from seasonally cold to glacial. This paper reexamines the question of Neandertal cold adaptation using updated fossil, physiological, and archaeological evidence.
Trenton W. Holliday, Cara Ocobock, Libby W. Cowgill, Scott D. Maddux   +3 more
wiley   +1 more source

From Iconic Species to Biodiversity: The Role of Zoos in Inspiring Visitors' Affinity for a Broader Range of Wild Animals

Integrative Conservation, Volume 4, Issue 2, Page 205-217, June 2025.
Zoo visits significantly influence wildlife preferences, enhancing fondness for a wider range of species and fostering affinity for less popular taxa. The interplay between enclosure and interpretive characteristics proved crucial in driving these changes, highlighting ways to optimize zoo conservation education. ABSTRACT Preferences for animal species
Kaiwen Zhou, Jiakuan Xu, Zujin Chen, Kathryn J. H. Williams, Zhijian Liang, Wei Lin, Tien Ming Lee, Sifan Hu   +7 more
wiley   +1 more source

Control strategy of novel hybrid commutated converter based on reverse blocking integrated gate commutated thyristor for commutation failure mitigation

High Voltage, Volume 10, Issue 3, Page 546-554, June 2025.
Abstract Commutation failure (CF) is an inherent problem faced by line commutated converter high voltage direct current (LCC‐HVDC) technology. To completely solve the problem of CF, we have proposed a novel hybrid commutated converter (HCC) technology based on reverse blocking integrated gate commutated thyristor, which can utilise two methods for ...
Zongze Wang, Zhanqing Yu, Lu Qu, Zhichang Yuan, Kangsheng Cui, Jian Shi, Biao Zhao, Rong Zeng   +7 more
wiley   +1 more source

Design and hardware verification of photovoltaic converter based on adaptive P&O with snubber and BJT circuits

AIP Advances
The efficient utilization of renewable energy is a key technology area of high domestic and international concern, and the research and development of DC–DC photovoltaic converters with high conversion efficiency is of great significance for improving ...
Yiming Zhong, Shizhou Xu, Jingying Yao
doaj   +1 more source

Single-Switch Soft-Switched High Voltage Gain Converter With Low Voltage Stress and Continuous Input Current

IEEE Open Journal of Power Electronics
This paper introduces a soft-switched high step-up converter applicable to photovoltaic systems. In the proposed topology, to further improve the voltage gain and reduce the components voltage stress, coupled inductors and voltage multiplier cell (VMC ...
Mohammad Reza Gholami, Siamak Khalili, Hosein Farzanehfard, Ehsan Adib, Hani Vahedi   +4 more
doaj   +1 more source