Results 61 to 70 of about 2,216,872 (294)

Active voltage balancing of DC-link electrolytic capacitors

IET Power Electronics, 2008
DC voltage links of three-phase power converters are frequently equipped with a series connection of two electrolytic capacitors because of high voltage level. For such a configuration, usually resistors have to be arranged in parallel to each capacitor in order to balance the partial voltages. These balancing resistors, however, have to be dimensioned
H. Ertl, T. Wiesinger, J.W. Kolar
openaire   +1 more source

Digitally Printed Eco‐Friendly Electronic Devices

Advanced Functional Materials, EarlyView.
Fabrication of electronics using eco‐friendly materials through digital printing routes is a promising strategy for improving life cycle sustainability and reducing the environmental impacts of conventional manufacturing. This review highlights state‐of‐the‐art eco‐friendly materials, green ink formulations, various resource‐efficient digital printing ...
Nitheesh M. Nair, Mikel Rincón‐Iglesias, Cristian Mendes‐Felipe, Fatemeh Etehadi, Senentxu Lanceros‐Méndez, Gerardo Hernandez‐Sosa   +5 more
wiley   +1 more source

Differential and Common-Mode Model-Based Controller for a Grid-Tied Three-Phase NPC Converter

IEEE Access
This paper introduces a controller designed for transformerless inverters connected to the grid via an inductor-capacitor-inductor (LCL) output filter. The controller incorporates a virtual ground (VG) connection, providing a straightforward solution to ...
Gerardo Escobar, Jorge L. Lopez-Sarabia, Andres A. Valdez-Fernandez, Edgar D. Silva-Vera, Jesus E. Valdez-Resendiz, Jonathan C. Mayo-Maldonado   +5 more
doaj   +1 more source

Multi‐phase VSI DC‐link capacitor considerations

IET Electric Power Applications, 2019
The modelling, control, switching schemes, novel applications, etc. of multi‐phase voltage source inverters (VSIs) have been studied in recent years. While some DC‐link capacitor considerations have been reported and ripple current assessments presented, the impact of these analyses on system design has not previously been quantified.
Zipan Nie, Nigel Schofield
openaire   +1 more source

Architected Bio‐Based Iontronic Skin With Dual‐Mode Pressure and Strain Sensing

Advanced Functional Materials, EarlyView.
Bio‐based acrylates in combination with an ionic liquid create 3D‐printed ionogels with compositionally tuneable mechanics and ionic conductivity. Gyroid architectures amplify low‐pressure sensitivity while preserving robust strain sensing, enabling dual‐mode detection of pressure and deformation.
Maksims Jurinovs, Madara Veseta, Fevzihan Basarir, Beatrise Silava, Eduards Bakis, Krisjanis Smits, Olesja Starkova, Jaana Vapaavuori, Sergejs Gaidukovs   +8 more
wiley   +1 more source

Stability analysis and dynamic response of a DC-link module with a series voltage compensator [PDF]

, 2013
A DC-link module composed of a reduced value of DC-link capacitor and a series voltage compensator has been proposed. The voltage compensator processes the ripple voltage on the DC link and reactive power only, which can be implemented by low-voltage ...
Chung, Henry, Huai Wang, Wenchao Liu, Henry Chung, Blaabjerg, Frede; id_orcid, Frede Blaabjerg, Wang, Huai, Liu, Wenchao   +7 more
core   +1 more source

Energetic Offset in Organic Solar Cells‐ Importance, Confusion and Outlook

Advanced Materials, EarlyView.
Energetic offsets in organic solar cells (OSCs) remain a subject of debate due to measurement‐ and lab‐dependent discrepancies. This Perspective clarifies the physical origins of these variations and identifies temperature‐dependent electro‐optical methods as a reliable approach to obtain consistent offset values.
Nakul Jain, Xian'e Li, Mats Fahlman, Olle Inganäs, Koen Vandewal, Feng Gao   +5 more
wiley   +1 more source

Ripple Reduction of Active Split DC-Link 4-Wire Inverters by Phase-Shifted Multi-Carrier Modulation

IEEE Open Journal of Power Electronics
This paper considers a multi-carrier modulation in which the phase-shifts between the carriers are adjusted to reduce the rms current flowing into the active split dc-link capacitors of four-wire three-phase inverters when the neutral node is modulated ...
Ezio Gallo, Davide Biadene, Igino Toigo, Tommaso Caldognetto   +3 more
doaj   +1 more source

Thermal‐Driven Diode Polarity Switching From Competing Helical Superconducting States in WTe2/α‐Fe2O3 Heterostructures

Advanced Materials, EarlyView.
A Nb‐proximitized Josephson junction based on a WTe2/α‐Fe2O3 heterostructure exhibits a robust superconducting diode effect with programmable polarity. The diode direction can be trained by magnetic fields and switched by temperature cycling, revealing tunable finite‐momentum pairing states and competing superconducting states in symmetry‐broken ...
Enze Zhang, Grant Z. X. Yang, Zi‐Ting Sun, Xinhou Chen, Shishun Zhao, Chufan Chen, Chenhui Zhang, Fanrui Hu, K. T. Law, Hyunsoo Yang   +9 more
wiley   +1 more source

Aging Mechanism and Life Estimation of Photovoltaic Inverter DC-link Capacitors in Alternating Humid and Thermal Environment

DC-link capacitors play a vital role in managing ripple voltage and current in converters and various devices. This study focuses on exploring the aging characteristics of DC-link capacitors in alternating humid and thermal environments aligned with the ...
Dong, Haiying, Gao, Quanyi, Li, Shuaibing, Kang, Yongqiang, Cui, Yi   +4 more
core   +1 more source