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Liu, L. (author)The MMC-based MTDC systems are considered a promising solution for long-distance power transmission, integration of renewable energy sources, and interconnection of power grids. Nowadays, MMC-based MTDC systems have been successfully developed in various projects worldwide and are expected to play a significant role in future electrical power...doctoral thesis 2024
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Ganeshpure, D.A. (author)The integration of wind and solar energy through power electronic converters has introduced new challenges to High Voltage (HV) equipment in the electrical power system. Switchgear, cables, and transformers are now subject to higher dV/dt stress and complex wave shapes due to solid-state switching. This poses a threat to the reliability of the...doctoral thesis 2024
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Dehghan Marvasti, F. (author), Mirzaei, Ahmad (author), Savaghebi, Mehdi (author), Lekić, A. (author), Popov, M. (author)Fast, sensitive, and selective protection principles are one of the major challenges in the feasibility of modular multi-terminal (MMC) high voltage direct current (HVDC) grids. Rate of change of voltage (ROCOV) and transient-based solutions are the traditional and widely accepted protection principles. Despite the speed and practicality of...journal article 2024
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Grootes, Casper (author)With an increase in higher power (ultra) fast EV charging stations and a new EU law for mandatory deployments of EV charging stations, an optimal MVAC grid connection for these charging stations is desired. Considering this connection, the use of a solid-state transformer (SST) performs better in terms of weight, size and efficiency with a...master thesis 2023
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Hurkmans, Brecht (author)In this master thesis, the design and implementation of a high-voltage switch using series-connected Metal Oxide Semiconductor Field Effect Transistors (MOSFETs) is discussed. A high-voltage switch is needed for applications such as high-voltage DC converters. Multilevel modular converters (MMCs) can also aid in the voltage-blocking capabilities...master thesis 2023
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van Ammers, Jeroen (author)Submodules are the building blocks for MMC-type HVDC converters and therefore of utmost importance for converter reliability. In order to unlock smarter maintenance strategies for submodule semiconductors, the technical condition of the semiconductors needs to be estimated to form a health index. Besides the non-project-specific traditional...master thesis 2023
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Kamat Tarcar, Rohan (author)Integrating renewable offshore wind generation into global power grids is a critical issue in the energy industry. Modular Multilevel Converter (MMC)-based High Voltage Direct Current (HVDC) grids are the most effective and promising technical solution for the new offshore wind energy power system connections. These grids offer scalability,...master thesis 2023
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Ahmadi, M. (author), Shekhar, A. (author), Bauer, P. (author)Power electronics converters are crucial for power generation, transmission, and distribution. The modular multilevel converter (MMC) is highly valued for its ability to handle high power levels, versatility in reconfiguration, high efficiency through small-capacity submodules (SMs), and robust control capabilities. A failure of a power...conference paper 2023
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Kamat Tarcar, R. (author), Shetgaonkar, A.D. (author), Popov, M. (author), van der Meijden, M.A.M.M. (author), Winter, Wilhelm (author), Ndreko, M. (author), Dimitrovski, R. (author), Burkhardt, Matthias (author), Lekić, A. (author)The radial topology of the Multi-terminal High Voltage Direct Current (MTDC) power system is a preferred connection for the gigawatt- renewable power due to its scalability and reliability. However, a radial topology with a metallic return bipolar converter configuration MTDC network possesses technical challenges regarding DC fault current...conference paper 2023
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Ganeshpure, D.A. (author), Soeiro, Thiago B. (author), Ghaffarian Niasar, M. (author), Vaessen, P.T.M. (author)A Modular Multilevel Converter (MMC)-based Arbitrary Wave shape Generator (AWG) for High Voltage (HV) testing faces challenges in the control hardware to generate kHz-range high-frequency waveforms. Real Time Simulators (RTS) provide a simple way to implement the control of the MMC-based AWG in the FPGA. One of the commercially available RTS...conference paper 2023
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Liu, L. (author), Shetgaonkar, A.D. (author), Lekić, A. (author)This paper presents the modular-multilevel-converter (MMC) control interoperability (IOP) and interaction within the High Voltage Direct Current (HVDC)-based power system. IOP is a crucial issue in the large-scale HVDC grid with different suppliers. To accommodate future multi-vendor HVDC grids developments, this article comprehensively...journal article 2023
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Zhou, Xiaochuan (author), Ganeshpure, D.A. (author), Soeiro, Thiago B. (author), Ghaffarian Niasar, M. (author), Wu, Y. (author), Vaessen, P.T.M. (author)In order to damp the resonance in the MMC-based Arbitrary Wave shape Generator (AWG) used for high voltage testing, an active damping control methodology is proposed in this paper instead of the passive damping with an arm resistor. It is vital to ensure the system’s stability when such an active damping closed loop control is implemented....conference paper 2023
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Liu, L. (author), Lekić, A. (author), Popov, M. (author)The DC transmission line protection technology is crucial for the development of multi-terminal Voltage Source Converter (VSC)-based HVDC systems. This article proposes a robust non-unit traveling wave protection (TWP), which deals with the DC fault area identification and fault type discrimination for high impedance fault...journal article 2023
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Asgari, A. (author), Sousanabadi, Amin (author), Sedighi, Mohammad (author)Metal matrix composites (MMC) introduced special features such as resistance to wear and high strength to weight ratio and these characteristics categorized them as difficult-to-cut materials in the field of machining. In the current paper, a novel study on the cutting fluid emulsion 5% role in the machinability of a magnesium-based metal...journal article 2023
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Ahmadi, M. (author), Shekhar, A. (author), Bauer, P. (author)Modular Multilevel Converters (MMCs) find increasing applications in medium to high-voltage systems. In such systems, reliability-oriented selection of power electronic switches becomes essential because higher modularity implies an increased number of components. The trade-off between the impact of higher modularity on converter reliability...journal article 2023
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Shetgaonkar, A.D. (author), Liu, L. (author), Lekić, A. (author), Popov, M. (author), Palensky, P. (author)Meshed offshore grids (MOGs) present a viable option for a reliable bulk power transmission topology. The station-level control of MOGs requires faster dynamics along with multiple objective functions, which is realized by the model predictive control (MPC). This paper provides control, and protection design for the Modular Multilevel...journal article 2023
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Giannakopoulos, G. (author), Perilla Guerra, A.D. (author), Rueda, José L. (author), Palensky, P. (author), Gonzalez-Longatt, Francisco (author)Modernization of power systems leads to more power electronic interfaced units in the generation, demand, and transmission. Examples are remotely installed renewable energy sources, loads with constant power, or high voltage direct current (HVDC) corridors. These changes significantly affect the frequency stability margins of the system and...book chapter 2023
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van der Sande, Robin (author)With the increasing appearance of DC loads and DC sources in the MVAC distribution grids, the need for DC power systems is getting more and more pronounced. As a result, the MMC has become a promising and innovative technology that can serve as the interface between a DC and AC network. The MMC-based MVDC distribution link is one of the...master thesis 2022
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Zang, Y. (author), Ghaffarian Niasar, M. (author), Ganeshpure, D.A. (author), Qian, Yong (author), Sheng, Gehao (author), Jiang, Xiuchen (author), Vaessen, P.T.M. (author)With the widespread application of power electronic switching technology, power equipment is facing new electrical stresses brought about by multilevel staircase voltages during testing and operation. Therefore, the partial discharge (PD) behavior of five typical defects in power equipment under the staircase waveform needs to be investigated...journal article 2022
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Argiz, Lucía (author), Correa-Galeote, David (author), Val del Río, Ángeles (author), Mosquera-Corral, Anuska (author), Gonzalez Cabaleiro, R. (author)The lipid fraction of the effluents generated in several food-processing activities can be transformed into polyhydroxyalkanoates (PHAs) and triacylglycerides (TAGs), through open culture biotechnologies. Although competition between storing and non-storing populations in mixed microbial cultures (MMCs) has been widely studied, the right...journal article 2022