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Hybrid Feedback Control Methods for Robust and Global Power Conversion**This research has been partially supported by the National Science Foundation under CAREER Grant no. ECS-1450484 and by the Air Force Office of Scientific Research under YIP Grant no. FA9550-12-1-0366. [PDF]

, 2015
In this paper, the applicability and importance of hybrid system tools for the design of control algorithms for energy conversion in power systems is illustrated in two hybrid control designs, one pertaining to DC/DC conversion and the other to DC/AC ...
Jun Chai, Ricardo G. Sanfelice
openalex   +3 more sources

Triple-junction perovskite-perovskite-silicon solar cells with power conversion efficiency of 24.4.

Energy Environ Sci
Hu H, An SX, Li Y, Orooji S, Singh R, Schackmar F, Laufer F, Jin Q, Feeney T, Diercks A, Gota F, Moghadamzadeh S, Pan T, Rienäcker M, Peibst R, Nejand BA, Paetzold UW.   +16 more
europepmc   +3 more sources

Projecting GaN HEMTs lifetimes under typical stresses commonly observed in DC-DC converters

Power Electronic Devices and Components, 2023
DC-DC converters exist in virtually every application of modern power electronics. Due to small die size, low on-resistance, and low parasitic capacitance, GaN power devices offer superior conversion efficiency and record-setting power density.
Shengke Zhang, Siddhesh Gajare, Ricardo Garcia, Sijun Huang, Angel Espinoza, Andrea Gorgerino, Ruizhe Zhang, Alejandro Pozo, Robert Strittmatter, Alex Lidow   +9 more
doaj   +1 more source

Compound Fault Feature Extraction of Wind Power Gearbox Based on DRS and Improved Autogram

Zhongguo dianli, 2023
Compound fault feature extraction is the key to analyzing the root cause of wind power gearbox faults. A compound fault feature extraction method based on DRS and improved Autogram is proposed.
Haifei MA, Wei TENG, Dikang PENG, Yibing LIU, Tao JIN   +4 more
doaj   +1 more source

Nonlinear Dynamic Characteristics of Multidisk Rod Fastening Rotor with Axial Unbalance Mass Distribution

Shock and Vibration, 2022
During long-term operation, the blades of rod fastening rotor are very prone to fault and may cause uneven axial mass distribution. The dynamic characteristics of a multidisk rod fastening rotor with axial unbalance mass distribution are studied.
Li Zhao, Haosui Zhang, Yibing Liu, Chao Zhou   +3 more
doaj   +1 more source

Electrical Double Layer Mechanism Analysis of PEM Water Electrolysis for Frequency Limitation of Pulsed Currents

Energies, 2021
This paper proposes a method for improving hydrogen generation using pulse current in a proton exchange membrane-type electrolyzer (PEMEL). Traditional methods of electrolysis using direct current are known as the simplest approach to produce hydrogen ...
Jae-Hoon Kim, Chang-Yeol Oh, Ki-Ryong Kim, Jong-Pil Lee, Tae-Jin Kim   +4 more
doaj   +1 more source

Modeling and Control Parameters Design for Grid-Connected Inverter System Considering the Effect of PLL and Grid Impedance

IEEE Access, 2020
Small-signal stability problems often occur when the inverter for renewable energy generation is connected to weak grid. A small-signal transfer function integrated model reflecting the interaction of grid impedance, phase locked-loop (PLL), and current ...
Zhiwei Xie, Yandong Chen, Wenhua Wu, Yuancan Xu, Haining Wang, Jian Guo, An Luo   +6 more
doaj   +1 more source

Modified Passivity-Based Control for LCL-Filtered Grid-Tied Inverter with Output Admittance Reshaping

Journal of Control Science and Engineering, 2023
As a nonlinear control method, the Euler–Lagrange- (EL-) based passivity-based control (PBC) has been studied for grid-tied converters based on energy function to achieve better performance.
Han Wang, Gang Shi, Jianwen Zhang, Miao Zhu, Xu Cai   +4 more
doaj   +1 more source

75%-efficiency blue generation from an intracavity PPKTP frequency doubler [PDF]

, 2004
We report on a high-efficiency 461 nm blue light conversion from an external cavity-enhanced second-harmonic generation of a 922 nm diode laser with a quasi-phase-matched KTP crystal (PPKTP).
Arie, Ashkin, Baggio, Beier, Bierlein, Bode, Boulanger, Boyd, Chu, Courtillot, Douillet, Fradkin, Goudarzi, Hansson, Hemmerich, J.-J. Zondy, Juwiler, Kato, Klappauf, Kozlovsky, Li, Ludlow, Mabuchi, Nakamura, P. Lemonde, Pelz, Pierrou, Polzik, R. Le Targat, Schwedes, Shoji, White, Woll, Zeppini, Zondy, Zondy, Zysset   +36 more
core   +3 more sources

Comparison of DC linear and non-linear models for multi-terminal VSC HVDC networks

The Journal of Engineering, 2019
The analysis and control design of multi-terminal VSC-HVDC systems requires a linearised model of these inherently non-linear systems. This paper develops such a model, from converter to multi-terminal system, discusses the key concepts and shows its use
Jesus Carmona-Sanchez, Ognjen Marjanovic, Mike Barnes, Wenyuan Wang   +3 more
doaj   +1 more source