A5060661396- HVDC Systems and Fault Protection
- Silicon Carbide Semiconductor Technologies
- Real-time simulation and control systems
- Advanced DC-DC Converters
- Physics and Engineering Research Articles
- Plasma Diagnostics and Applications
- Marine Ecology and Invasive Species
- Electric Vehicles and Infrastructure
- Laser-induced spectroscopy and plasma
- Multilevel Inverters and Converters
- Marine Biology and Environmental Chemistry
- Electromagnetic Compatibility and Noise Suppression
- Railway Systems and Energy Efficiency
- Renewable Energy and Sustainability
- Microgrid Control and Optimization
- Rocket and propulsion systems research
- Microplastics and Plastic Pollution
- Electric and Hybrid Vehicle Technologies
- Induction Heating and Inverter Technology
- Plasma Applications and Diagnostics
- Laser-Plasma Interactions and Diagnostics
- Marine Bivalve and Aquaculture Studies
- Magnetic confinement fusion research
- High voltage insulation and dielectric phenomena
- Advanced Aircraft Design and Technologies
Nelson Marlborough Institute of Technology
2021-2023
RWTH Aachen University
2016-2020
Institute of Automation
2017
Lawrence Livermore National Laboratory
2007
In this work, the spatial electro-thermal modeling and simulation of power electronic modules is discussed. It shown how physical mathematical techniques can be combined to obtain a compact time-efficient framework for modules. The accuracy demonstrated based on experiments. used fast calculation temperature distribution module in an electric vehicle over driving cycles. information allows effectively estimate lifetime module.
Biofouling of ships' internal seawater systems (ISS) can cause significant operational issues and is a potential transfer mechanism for marine nonindigenous species. This study used an engine room simulator economic evaluation to quantify impacts on commercial ship performance biofouling occlusion within various ISS nodes (sea chest, strainer, heat exchangers). A characteristic hockey-stick relationship between impact emerged, whereby could tolerate up 55% single node without impact,...
Due to the increasing number of power-electronic components connected grid, medium-voltage dc (MVDC) grids are a promising alternative established ac distribution grids. Within this work, advantages and additional flexibility substations for (urban) railways future MVDC investigated. Possible topologies presented efficiencies compared.
The electrification of the mobility sector is steadily increasing. Besides established electrical vehicles like railways, also number full-electric busses with on-board batteries grows. Moreover, acceptance and hence share electric cars in traffic continously rising. To further accelerate public individual traffic, large-scale usual fast-charging infrastructures should be developed. This paper presents different approaches to ensure proper integration into existing grids. Also, power supply...
This paper presents an integrated software framework for preliminary aircraft design with a main focus on the integration and evaluation of (hybrid) electric propulsion concepts. The is extension to suite MICADO (Multidisciplinary Integrated Conceptual Aircraft Design Optimization), which has been developed at Institute Aerospace Systems (ILR) RWTH Aachen University since 2008. concepts requires significant adaptations within environment, such as powertrain design, mass estimation, mission...
Supplying 25 kV, 50 Hz railway systems is a challenging task due to the load characteristics of those systems. Hence, several approaches are developed improve their grid integration with static frequency converter based substations. However, this supply system can be further refined by application dc grid. paper presents and discusses one possible approach enhance applying
The Plasma Electrode Pockels Cell (PEPC) subsystem is a key component of the National Ignition Facility, enabling laser to employ an efficient four-pass main amplifier architecture. PEPC relies on pulsed power technology initiate and maintain plasma within cells provide necessary high voltage bias cells' nonlinear crystals. Ultimately, nearly 300 high-voltage, high-current pulse generators will be deployed in NIF support PEPC. Production solid-state thyratron-switched now complete, with...
Summary form given only. The plasma electrode pockels cell (PEPC) subsystem is a key component of the National Ignition Facility, enabling laser to employ an efficient four-pass main amplifier architecture. PEPC relies on pulsed power technology initiate and maintain within cells provide necessary high voltage bias cells' nonlinear crystals. Ultimately, nearly 300 high-voltage, high-current pulse generators will be deployed in NIF support PEPC. Production solid-state thyratron-switched...
Modeling the terminal behavior of power system components in transient condition is great necessity for systemlevel simulations future DC grids. One vital component grids are electronic converters. Therefore, efficient models converters, which model their behavior, needed system-level simulations. In this paper, an approach eliminating all internal electrical nodes converters EMTP-type applied on three-phase Dual-Active Bridge DC-DC converter. The presented modeling maintains switching...
Transient system-level simulations of future DC grids require modeling the behavior at terminals power system's components, and thus also converters. The internal electrical variables electronic devices are not relevant in such simulations. Based on this, this paper presents an approach for eliminating all nodes a single-phase Dual-Active Bridge DC-DC converter EMTP-type Nonetheless, switching dynamics maintained, while dynamic effects converter-internal circuitry like transformer capacitors...
Abstract This article proposes a power hybridization factor-dependent DC supply grid layout and fault protection for hybrid electric aircraft. It is based on regulatory review an analysis of the components regarding their impact protection. The findings are applicable to medium-voltage high-temperature superconductor-based electrical drive trains.
The Dyna-C ac-dc converter is a current-source-based topology featuring medium-frequency galvanic isolation. This paper presents the state-space based average and small signal modeling of converter. A space vector modulation strategy developed, presented validated by simulation. Based on proposed model for converter, two stage closed loop control approach developed. comprises an outer to regulate transformer magnetizing-current inner <tex xmlns:mml="http://www.w3.org/1998/Math/MathML"...