Results 11 to 20 of about 1,682,119 (295)

Control of matrix converters [PDF]

open access: yes, 2007
The book is the result of an intense theoretical and experimental activity on matrix converters carried out at the Department of Electrical Engineering of the University of Bologna. The matrix converter is a direct ac/ac power converter. It has several advantages over the traditional power converters, such as compactness, bidirectional power flow, and ...
ZARRI, LUCA
core   +5 more sources

Upper Cervical Cord Area as a Biomarker of Conversion to Secondary Progressive Multiple Sclerosis. [PDF]

open access: yesAnn Clin Transl Neurol
ABSTRACT Objective This study assessed whether upper cervical cord area (UCCA) measured on routine brain MRI can serve as a biomarker of conversion to SPMS. Methods This is a single‐center retrospective cohort study of RRMS patients with cross‐sectional and longitudinal analyses of clinical and MRI data. Future SPMS converters were matched by age, sex,
El Ayoubi NK   +8 more
europepmc   +2 more sources

A Simple Carrier-Based Modulation for the SVM of the Matrix Converter [PDF]

open access: yes, 2013
Today, industry has not fully embraced the matrix converter solution. One important reason is its high control complexity. It is therefore relevant to propose a simpler but efficient modulation scheme, similar as three phase voltage source inverter ...
ARPILLIERE, Michel   +5 more
core   +1 more source

Optimal control and robust estimation for ocean wave energy converters [PDF]

open access: yes, 2013
This thesis deals with the optimal control of wave energy converters and some associated observer design problems. The first part of the thesis will investigate model predictive control of an ocean wave energy converter to maximize extracted power.
Abraham, Edo
core   +1 more source

The Conceptual Research over Low-Switching Modulation Strategy for Matrix Converters with the Coupled Reactors

open access: yesEnergies, 2021
In this paper, different Pulse Width Modulation (PWM) strategies for operating with a low-switching frequency, a topology that combines Conventional Matrix Converters (CMCs), and Coupled Reactors (CRs) are presented and discussed.
Pawel Szczepankowski   +4 more
doaj   +1 more source

An Adaptive Control Method Based on Interval Fuzzy Sliding Mode for Direct Matrix Converters [PDF]

open access: yesInternational Journal of Industrial Electronics, Control and Optimization, 2020
In this paper, a new adaptive control method is proposed for direct matrix converters. The proposed method uses interval type-2 fuzzy logic integrated with sliding mode control.
Mehdi Bekrani   +2 more
doaj   +1 more source

Seven levels highly efficient modular multilevel matrix converter (M3C) for low frequency three-phase AC-AC conversion

open access: yesAutomatika, 2023
An Innovative Modular multilevel matrix converter (M3C) is proposed with reduced number of switching device owing to the improved efficiency, reduced cost and minimizes the size.
V. Karpagam, N. Narmadhai
doaj   +1 more source

Voltage and current spectra for matrix power converters [PDF]

open access: yes, 2009
Matrix power converters are used for transforming one alternating-current power supply to another, with different peak voltage and frequency. There are three input lines, with sinusoidally varying voltages which are 120◦ out of phase one from another ...
Cox, Stephen M., Creagh, Stephen C.
core   +1 more source

Active and Reactive Power Control Strategy for Grid-Connected Six-Phase Generator by Using Multi-Modular Matrix Converters [PDF]

open access: yesJournal of Systemics, Cybernetics and Informatics, 2016
This paper proposes an active and reactive power control strategy based on predictive control approaches applied to gridconnected renewable energy systems.
David Caballero   +7 more
doaj  

Challenges and Design Requirements for Industrial Applications of AC/AC Power Converters without DC-Link

open access: yesEnergies, 2019
AC/AC converters that do not have a DC energy storage element, such as a matrix chopper and a matrix converter, are increasingly becoming alternatives to conventional two-stage AC/DC/AC converters and thyristor choppers. In such systems, the main DC-link
Pawel Szczesniak
doaj   +1 more source

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