212 research outputs found
Design and Control of Power Converters 2019
In this book, 20 papers focused on different fields of power electronics are gathered. Approximately half of the papers are focused on different control issues and techniques, ranging from the computer-aided design of digital compensators to more specific approaches such as fuzzy or sliding control techniques. The rest of the papers are focused on the design of novel topologies. The fields in which these controls and topologies are applied are varied: MMCs, photovoltaic systems, supercapacitors and traction systems, LEDs, wireless power transfer, etc
Power Converter of Electric Machines, Renewable Energy Systems, and Transportation
Power converters and electric machines represent essential components in all fields of electrical engineering. In fact, we are heading towards a future where energy will be more and more electrical: electrical vehicles, electrical motors, renewables, storage systems are now widespread. The ongoing energy transition poses new challenges for interfacing and integrating different power systems. The constraints of space, weight, reliability, performance, and autonomy for the electric system have increased the attention of scientific research in order to find more and more appropriate technological solutions. In this context, power converters and electric machines assume a key role in enabling higher performance of electrical power conversion. Consequently, the design and control of power converters and electric machines shall be developed accordingly to the requirements of the specific application, thus leading to more specialized solutions, with the aim of enhancing the reliability, fault tolerance, and flexibility of the next generation power systems
Power Converters in Power Electronics
In recent years, power converters have played an important role in power electronics technology for different applications, such as renewable energy systems, electric vehicles, pulsed power generation, and biomedical sciences. Power converters, in the realm of power electronics, are becoming essential for generating electrical power energy in various ways. This Special Issue focuses on the development of novel power converter topologies in power electronics. The topics of interest include, but are not limited to: Z-source converters; multilevel power converter topologies; switched-capacitor-based power converters; power converters for battery management systems; power converters in wireless power transfer techniques; the reliability of power conversion systems; and modulation techniques for advanced power converters
Emerging Power Electronics Technologies for Sustainable Energy Conversion
This Special Issue summarizes, in a single reference, timely emerging topics related to power electronics for sustainable energy conversion. Furthermore, at the same time, it provides the reader with valuable information related to open research opportunity niches
Model Predictive Control Technique of Multilevel Inverter for PV Applications
Renewable energy sources, such as solar, wind, hydro, and biofuels, continue to gain
popularity as alternatives to the conventional generation system. The main unit in the renewable
energy system is the power conditioning system (PCS). It is highly desirable to obtain higher
efficiency, lower component cost, and high reliability for the PCS to decrease the levelized cost of
energy. This suggests a need for new inverter configurations and controls optimization, which can
achieve the aforementioned needs. To achieve these goals, this dissertation presents a modified
multilevel inverter topology for grid-tied photovoltaic (PV) system to achieve a lower cost and
higher efficiency comparing with the existing system. In addition, this dissertation will also focus
on model predictive control (MPC) which controls the modified multilevel topology to regulate
the injected power to the grid. A major requirement for the PCS is harvesting the maximum power
from the PV. By incorporating MPC, the performance of the maximum power point tracking
(MPPT) algorithm to accurately extract the maximum power is improved for multilevel DC-DC
converter. Finally, this control technique is developed for the quasi-z-source inverter (qZSI) to
accurately control the DC link voltage, input current, and produce a high quality grid injected
current waveform compared with the conventional techniques.
This dissertation presents a modified symmetrical and asymmetrical multilevel DC-link
inverter (MLDCLI) topology with less power switches and gate drivers. In addition, the MPC
technique is used to drive the modified and grid connected MLDCLI. The performance of the
proposed topology with finite control set model predictive control (FCS-MPC) is verified by
simulation and experimentally. Moreover, this dissertation introduces predictive control to achieve
maximum power point for grid-tied PV system to quicken the response by predicting the error
before the switching signal is applied to the converter. Using the modified technique ensures the
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system operates at maximum power point which is more economical. Thus, the proposed MPPT
technique can extract more energy compared to the conventional MPPT techniques from the same
amount of installed solar panel.
In further detail, this dissertation proposes the FCS-MPC technique for the qZSI in PV
system. In order to further improve the performance of the system, FCS-MPC with one step
horizon prediction has been implemented and compared with the classical PI controller. The
presented work shows the proposed control techniques outperform the ones of the conventional
linear controllers for the same application. Finally, a new method of the parallel processing is
presented to reduce the time processing for the MPC
Emerging Power Electronics Technologies for Sustainable Energy Conversion
This Special Issue summarizes, in a single reference, timely emerging topics related to power electronics for sustainable energy conversion. Furthermore, at the same time, it provides the reader with valuable information related to open research opportunity niches
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