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Optimal power flow in multi-terminal HVDC networks with embedded high-power DC-DC converters for voltage matching and flexible DC transmission
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Institution of Engineering and Technology
, 2020 , Article)
High-power DC-DC converters are integrated into multi-terminal high-voltage DC (MTDC) networks, typically for voltage matching or flexible DC transmission. This study addresses droop-controlled radial and mesh MTDC networks ...
Multi-terminal Hvdc system with offshore wind farms under anomalous conditions: Stability assessment
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Institute of Electrical and Electronics Engineers Inc.
, 2021 , Article)
Droop control is widely adopted to control Multi-Terminal high-voltage Direct Current (MTDC) systems with offshore wind farms. During permanent faults, the faulty line should be isolated promptly to preserve a high reliability ...
Development of a three-phase interleaved converter based on SEPIC DC-DC converter operating in discontinuous conduction mode for ultra-fast electric vehicle charging stations
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John Wiley and Sons Inc
, 2021 , Article)
One of the main challenges that impact transportation systems electrification is their batteries' charging process. This work presents the development of a three-phase ultra-fast Electric Vehicle (EV) charger based on the ...
A modular multilevel DC-DC converter with self-energy equalization for DC grids
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John Wiley and Sons Inc
, 2021 , Article)
Medium-/High Voltage DC grids are interesting for the integration of renewable energy sources. DC-DC conversion systems are highly needed for the development of DC grids. Recently, Modular Multilevel Converter (MMC) is the ...
Modular isolated DC-DC converters for ultra-fast EV chargers: A generalized modeling and control approach
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MDPI AG
, 2020 , Article)
Electric Vehicles (EVs) play a significant role in the reduction of CO2 emissions and other health-threatening air pollutants Accordingly, several research studies are introduced owing to replacing conventional gasoline-powered ...
Impact of forced and unforced system parameter variations on network stability and system economics of radial MTDC networks
(
Elsevier Ltd
, 2020 , Article)
This paper focuses on investigating the impact of system parameters uncertainty on voltage droop-controlled Multi-Terminal High-Voltage DC (MTDC) networks. The voltage droop typically controls the power-sharing among the ...
Multimodule Boost-Converter-Based Pulse Generators: Design and Operation
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Institute of Electrical and Electronics Engineers Inc.
, 2020 , Article)
In this article, three different types of pulse generators based on multimodule boost converter ringing circuit are presented, namely, interleaved, stacked, and interleaved-stacked with full design and operational concept. ...
Hybrid Modular Multilevel Converter with Arm-Interchange Concept for Zero-/Low- Frequency Operation of AC Drives
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Institute of Electrical and Electronics Engineers Inc.
, 2020 , Article)
DC-AC Modular Multilevel Converter (MMC) is a promising candidate for high-power AC drive applications. The main challenge of operating the MMC in AC drive applications is its performance during low-frequency conditions, ...
Modular Multilevel Converter with Self-Energy Equalization for Medium Voltage AC Drive Applications
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Institute of Electrical and Electronics Engineers Inc.
, 2021 , Article)
The modular multilevel converter (MMC) is a promising candidate for high-/medium-voltage high-power applications such as medium voltage ac drives due to its modularity, reliability, and scalability. The main challenge of ...
Impact of COVID-19 Pandemic on Qatar Electricity Demand and Load Forecasting: Preparedness of Distribution Networks for Emerging Situations
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MDPI
, 2022 , Article)
The COVID-19 pandemic has brought several global challenges, one of which is meeting the electricity demand. Millions of people are confined to their homes, in each of which a reliable electricity supply is needed, to ...