Results 11 to 20 of about 61,851 (267)

Three-phase boost-stage coupled current source inverter concept and its space vector modulation

open access: yesFrontiers in Energy Research, 2023
The current source inverter (CSI) is essentially a converter with inherent boost capability and has been preliminarily applied in the field of renewable energy generation systems. However, conventional CSIs are mostly operated independently.
Weiqi Wang   +3 more
doaj   +1 more source

Study on the CM EMI Generation Characteristics of the Si/SiC Hybrid Switch at Different Switching Patterns and Gate Resistors

open access: yesFrontiers in Electronics, 2022
The switching patterns and gate resistor of the Si/SiC hybrid switch are the key to realizing its own highly efficient and reliable operation. However, as an important performance indicator, the common mode (CM) electromagnetic interference (EMI) noise ...
Yong Zhu   +5 more
doaj   +1 more source

Performance Evaluation of Si/SiC Hybrid Switch-Based Three-Level Active Neutral-Point-Clamped Inverter

open access: yesIEEE Open Journal of Industry Applications, 2022
In this paper, two types of Silicon (Si) IGBT and Silicon Carbide (SiC) hybrid switch (Si/SiC HyS) based three-level active neutral-point-clamped (3L-ANPC) inverter are proposed for high efficiency and low device cost.
Haichen Liu, Tiefu Zhao, Xuezhi Wu
doaj   +1 more source

Development of 110kV Thyristor Assisted Arc Extinguishing Hybrid OLTC [PDF]

open access: yesE3S Web of Conferences, 2021
On the basis of formulating the technical conditions of 110kV thyristor assisted arc extinguishing hybrid on load tap changer, this paper carries out the mechanical structure design, gives the design scheme of switching switch, selection switch and other
Shi Fei   +6 more
doaj   +1 more source

Capacitor Commutation Method for MVDC Hybrid Circuit Breakers

open access: yesDesigns, 2021
The medium voltage DC (MVDC) type system can connect multiple terminals to a common MVDC bus, so it is possible to connect several renewable DC power sources to the common MVDC bus, but a DC circuit breaker is needed to isolate short circuit accidents ...
Hyosung Kim
doaj   +1 more source

The macro model of hybrid on-load tap-changer passive trigger [PDF]

open access: yesMATEC Web of Conferences, 2021
Using thyristor as arc medium hybrid on-load tap-changer, completely solve the problem of switch produce arc, reduce the ablation of mechanical contact, improve the working environment of transformer oil, both mechanical switch and brake switch tube, the
Li Peng   +6 more
doaj   +1 more source

Trend towards virtual and hybrid conferences may be an effective climate change mitigation strategy

open access: yesNature Communications, 2021
Moving conferences from in-person to virtual and hybrid modes may have emissions reductions benefits. Here the authors find that the switch to virtual and hybrid conferencing reduces the carbon footprint by 94% when it comes to the switch to virtual ...
Yanqiu Tao   +3 more
doaj   +1 more source

Improving HybrID: How to best combine indirect and direct encoding in evolutionary algorithms. [PDF]

open access: yesPLoS ONE, 2017
Many challenging engineering problems are regular, meaning solutions to one part of a problem can be reused to solve other parts. Evolutionary algorithms with indirect encoding perform better on regular problems because they reuse genomic information to ...
Lucas Helms, Jeff Clune
doaj   +1 more source

Conceptual Design of Switch Network Unit for CFETR Coil Power Supply Systems

open access: yesIEEE Access, 2019
The China Fusion Engineering Test Reactor (CFETR) device is a milestone in the roadmap for the utilizing of fusion energy in China, whose final goal of plasma current is up to 10.02 MA. As the key system to generate a high enough voltage (20 kV) required
Chuan Li   +5 more
doaj   +1 more source

Piezoelectric vibration energy harvesting with asymmetric hybrid bracing beam

open access: yesJournal of Low Frequency Noise, Vibration and Active Control, 2023
In order to reduce the natural frequency of the piezoelectric vibration energy harvester, improve the output power of the piezoelectric vibration energy harvester, and meet the demand of power supply for the low-power wireless switch in the low-frequency
Tianbing Ma   +5 more
doaj   +1 more source

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