Results 131 to 140 of about 4,738 (255)
A High-Efficiency Single-Phase AC-AC Solid-State Transformer Without Electrolytic Capacitors
EnergiesThis paper proposes a single-phase AC-AC solid-state transformer (SST) that eliminates bulky energy storage components. The proposed matrix-type structure comprises a line-frequency (LF) rectifier, a half-bridge (HB) LLC resonant converter, a buck–boost ...
Hui Wang, Xiang Yan, Xiaochao Hou
doaj +1 more source
Loess Studies in Aotearoa New Zealand
New Zealand Journal of Geology and Geophysics, Volume 69, Issue 2, June 2026.Loess in Aotearoa New Zealand (ANZ) has been studied since its first documented recognition (on Banks Peninsula) in 1878 by Julius von Haast. A decade later, John Hardcastle revealed that southern ANZ loess was both glacial in origin and contained signals of past climates.
Brent V. Alloway +4 more
wiley +1 more source
Inverting Buck-Boost DCDC Converter Design Challenges
, 2014 This paper presents an inverting buck-boost DCDC converter design. A negative supply voltage is needed in a variety of applications, but only a few DCDC converters are available on the market. OLED, a new display type especially suited for small digital camera or mobile phone displays.
openaire +1 more source
Unidade retificadora de alta performance 1500W-25A, para telecomunicações [PDF]
, 1993 Dissertação (mestrado) Universidade Federal de Santa Catarina, Centro TecnologicoEste trabalho enfatiza o desenvolvimento de uma unidade retificadora em alta freqüência para aplicação em centrais telefônicas com capacidade de 1500W.
Gaidzinski, Paulo Roberto
core
An Overview of Tsunami Hazards in the Southwest Pacific Ocean
New Zealand Journal of Geology and Geophysics, Volume 69, Issue 2, June 2026.The southwest Pacific region is geologically complex and exhibits all the principal causes of tsunami generation. While contemporary events and historical catalogs indicate that trans‐Pacific tsunamis have affected this area (∼18% of tsunamis reported globally), it is unique in that a large part of the tsunami effects over the ∼200‐year historical ...
Jean H. M. Roger +13 more
wiley +1 more source
Ch‐Ch‐Ch‐Ch‐Changes: The Impact of Supply Base Growth, Contraction, and Turnover on Firm Innovation
Journal of Operations Management, Volume 72, Issue 4, Page 606-626, June 2026.ABSTRACT Modern supply chains are experiencing more disturbances due to regulatory shifts, rising sustainability standards, emerging or declining markets, and disruption to critical inputs. Some firms react by strengthening existing supplier partnerships to resist changes, while others reconfigure relationships with suppliers to embrace changes ...
Jordan M. Barker +3 more
wiley +1 more source
Assessment of Equivalent Noise Source Approach for EMI Simulations of Boost Converter [PDF]
, 2009 Vuttipon Tarateeraseth +6 more
core +1 more source
A Novel Transformer-less Buck-Boost Inverter with Coupled Inductor for Photovoltaic Systems
Among several proposed inverter topologies, the improved inverter based on the Aalborg inverter which can track the maximum energy from two independent photovoltaic arrays was proposed as a high efficiency, high power density, and dual-mode time-sharing ...
Wu, Weimin +5 more
core +1 more source
International Journal of Mechanical System Dynamics, Volume 6, Issue 2, Page 224-246, June 2026.ABSTRACT This work addresses the challenge of bidirectional trajectory tracking in solar‐powered wheeled mobile robots (WMRs), considering the mechanical structure, actuator‐driver, and power stage subsystems. Notably, this is the first study to explicitly model and control the actuator‐driver subsystem within this context. The proposed solution relies
Benjamin Natanael Santiago‐Nogales +8 more
wiley +1 more source
A New Dual-input Buck-boost Inverter with Input Power Balance
Photovoltaic inverters (PV) undertake the critical task of converting the DC power output from PV cells into the AC power required by the grid. In this paper, a dual-input Buck-boost inverter (DIBBI) is innovatively proposed, which combines the Buck ...
Wu, Weimin +5 more
core +1 more source