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Abstract figure legend Sleep disturbances are common in older adults, highlighting the need for accessible interventions to improve sleep quality. Eighteen older adults per group (balance training and control) were assessed before and after 12 weeks. The balance group increased GABA levels (magnetic resonance spectroscopy) and functional connectivity ...
Selin Scherrer +7 more
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Toward Chromoselective Transformations in Biological Systems: Perspectives and Challenges
Controlling biological systems with small‐molecule chromophores has evolved into a powerful strategy and is applied from chemical biology to medicine. However, the complexity of in vivo systems cannot be matched by a single wavelength of light. Developing methods to combine and individually control multiple chromophores is crucial.
Nadja A. Simeth
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A Novel Four-Leg Inverter Topology for Dual Three-Phase PMSM
IEEE Transactions on Power Electronics, 2023Ronghai Qu, Dong Jiang
exaly +2 more sources
Carrier-based PWM scheme for three-phase four-leg inverters
IECON 2013 - 39th Annual Conference of the IEEE Industrial Electronics Society, 2013This paper presents a pulse-width modulation (PWM) technique for controlling three-phase, four wire voltage source inverters (VSI). It is an extended scheme of a digital scalar pulse width modulation previously proposed for controlling three-leg inverters.
Darlan A. Fernandes +4 more
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A simple control technique for three-phase four-leg inverters
International Symposium on Power Electronics, Electrical Drives, Automation and Motion, 2006. SPEEDAM 2006., 2006The paper takes into consideration three-phase four-leg inverters used to supply unbalanced loads without using a transformer. In literature different three-dimensional modulation techniques, requiring complex mathematical algorithms are proposed for this kind of inverter.
A. Bellini, S. Bifaretti
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Eliminating Common Mode Conducted Emissions in Three-Phase Four-Leg Inverters
2021 IEEE Electric Ship Technologies Symposium (ESTS), 2021This paper presents a control method to eliminate the common mode voltage created by a three-phase, four-leg voltage source inverter. Wide band gap devices create an opportunity to use pulse density modulation instead of pulse width modulation, with two inverter poles switching high and two low at all times to eliminate common mode voltage without ...
Alexander L. Julian +2 more
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Novel random pulse position modulation for three-phase four-leg inverters
Proceedings of the Institution of Mechanical Engineers, Part I: Journal of Systems and Control Engineering, 2018Aiming at improving the harmonic spectra spreading effect, two randomized pulse position modulation strategies are proposed for three-phase four-leg inverters. Based on the volt-second balance law and the fixed switching frequency, the first proposed strategy places the center randomly during one carrier cycle with a limited degree of freedom, and the ...
Tinglong Pan +3 more
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Frequency-Adaptive Repetitive Control for Three-Phase Four-Leg V2G Inverters
IEEE Transactions on Transportation Electrification, 2021Three-phase four-leg inverters with an LCL filter are employed as onboard vehicle to grid (V2G) inverters due to their advanced features—high utilization of the dc bus voltage, counteraction of unbalanced voltages, and so on. Repetitive control (RC) can exactly track periodic signals with known frequency, which offers a simple high-accuracy current ...
Cuilan Tan +3 more
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Model predictive control of quasi-Z source three-phase four-leg inverter
IECON 2015 - 41st Annual Conference of the IEEE Industrial Electronics Society, 2015This paper presents a model predictive control (MPC) scheme for quasi-Z source (qZS) three-phase four-leg inverters. In order to cope with drawbacks of the traditional voltage source inverters (VSI)s, the qZS three-phase four-leg inverter topology is proposed in this study. To improve control capability of the controller, the MPC scheme is used.
Sertac Bayhan, Haitham Abu-Rub
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Three-Phase Four-Leg Inverter Based on Voltage Hysteresis Control
2010 International Conference on Electrical and Control Engineering, 2010As the output unit of variety distributed generation systems, the final power quality is determined by three-phase four-leg inverter. For the three-phase four-leg inverter, this paper presents a dynamic reference voltage hysteresis control scheme. Firstly, based on the existing hysteresis comparison method, this method improves the systems control ...
Xiaoyong Zhang, Jun Wang, Chuan Li
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