Results 61 to 70 of about 16,769 (309)
Advanced Science, EarlyView.A novel nanocomposite design strategy utilizes ZrO2 to intrinsically couple passive daytime radiative cooling and triboelectric functionality within a single material platform. Fabricated via direct ink writing, the multifunctional breathable architecture provides effective sub‐ambient cooling, motion‐driven energy harvesting, and adaptive ...
Yoon Young Choi +3 more
wiley +1 more source
Analysis and Modelling of the Commutation Error
, 2020 A multiscale dynamic analysis of the commutation error, based on the filtering approach is performed. The similarity multiscale hypothesis proposed by Bardina (1983) and extended by Geurts and Holm (2006) to the commutation error is examined in detail ...
Massimo Germano, Markus Klein
core +1 more source
, 2022 The commutation failure of high voltage direct current (HVDC) systems could lead to unstable operation of the alternating current/direct current (AC/DC) hybrid power grid.
Zeyu Cao +5 more
core +1 more source
Adaptive firing angle compensation control for mitigating DC subsequent commutation failure
电力工程技术, 2022 Subsequent commutation failure of the high voltage direct current (HVDC) transmission system has a seriously negative impact on the stable operation of the AC-DC hybrid power grid.
YANG Chengxiang +5 more
doaj +1 more source
Advanced Electronic Materials, EarlyView.Ising machines are emerging as specialized hardware solvers for computationally hard optimization problems. This review examines five major platforms—digital CMOS, analog CMOS, emerging devices, coherent optics, and quantum systems—highlighting physics‐rooted advantages and shared bottlenecks in scalability and connectivity.
Hyunjun Lee, Joon Pyo Kim, Sanghyeon Kim
wiley +1 more source
Applied Sciences, 2019 Since thyristor cannot turn off automatically, line commutated converter based high voltage direct current (LCC-HVDC) will inevitably fail to commutate and therefore auxiliary controls or voltage control devices are needed to improve the commutation ...
Jiangbo Sha +3 more
doaj +1 more source
Full-Bridge Converter with Soft Commutation in All Load Range
Глобальная ядерная безопасность, 2022 The development of converters with soft commutation improves issues of radiation interference and electromagnetic compatibility, reduce weight and size parameters by increasing efficiency and conversion frequency.
S. A. Baran, G. P. Smetankin
doaj +1 more source
Applied Economic Perspectives and Policy, EarlyView.ABSTRACT Rice is the main staple food for more than half of the world's population and the income from rice is an essential source for livelihoods of millions of households. We examine whether direct seed in rice production is an adaptation of rice farmers to rainfall changes and farm labor scarcity.
Manh Hung Do
wiley +1 more source
Reliability analysis and reliable operation of three-level ANPC inverter
Frontiers in Energy Research, 2023 The three-level active neutral-point-clamped (3L-ANPC) inverters have been widely used in medium-voltage high-power electrical drives. The purpose of this paper is to achieve the reliable operation for 3L-ANPC inverters by reliability analysis and ...
Xiaolin Zheng +4 more
doaj +1 more source
On commutativity and approximation
Theoretical Computer Science, 1983 The paper deals with lower and upper bounds on the algebraic complexity of bilinear forms based on the rank of the corresponding tensors. It defines the ''commutative border rank'' (cbrk) of a tensor, which is a modification of the definition of ''rank'' so that it can be applied to algorithms that a) only need to approximate the solution and b) make ...
openaire +2 more sources