Multi-function, Bi-Directional and Compact Power Converters for Aircraft Power System Applications

2002 ◽  
Author(s):  
Jie Chang ◽  
Tom Sun ◽  
Anhua Wang ◽  
Jiajia Zhang
Keyword(s):  
Power System ◽  
Power Converters

scholarly journals Development of a Multiphysics Real-Time Simulator for Model-Based Design of a DC Shipboard Microgrid

Energies ◽  
2020 ◽  
Vol 13 (14) ◽  
pp. 3580
Author(s):  
Fabio D’Agostino ◽  
Daniele Kaza ◽  
Michele Martelli ◽  
Giacomo-Piero Schiapparelli ◽  
Federico Silvestro ◽  
...  
Keyword(s):  
Power System ◽  
Real Time ◽  
Electric Propulsion ◽  
Power Converters ◽  
Storage Systems ◽  
Current Control ◽  
Model Based ◽  
Shipboard Power System ◽  
Shipboard Power ◽  
The Impact

Recent and strict regulations in the maritime sector regarding exhaust gas emissions has led to an evolution of shipboard systems with a progressive increase of complexity, from the early utilization of electric propulsion to the realization of an integrated shipboard power system organized as a microgrid. Therefore, novel approaches, such as the model-based design, start to be experimented by industries to obtain multiphysics models able to study the impact of different designing solutions. In this context, this paper illustrates in detail the development of a multiphysics simulation framework, able to mimic the behaviour of a DC electric ship equipped with electric propulsion, rotating generators and battery energy storage systems. The simulation platform has been realized within the retrofitting project of a Ro-Ro Pax vessel, to size components and to validate control strategies before the system commissioning. It has been implemented on the Opal-RT simulator, as the core component of the future research infrastructure of the University of Genoa, which will include power converters, storage systems, and a ship bridge simulator. The proposed model includes the propulsion plant, characterized by propellers and ship dynamics, and the entire shipboard power system. Each component has been detailed together with its own regulators, such as the automatic voltage regulator of synchronous generators, the torque control of permanent magnet synchronous motors and the current control loop of power converters. The paper illustrates also details concerning the practical deployment of the proposed models within the real-time simulator, in order to share the computational effort among the available processor cores.

scholarly journals Optimal converter control for PV-fed DC and AC interconnection by using hybrid artificial neural networks

2020 ◽  
Author(s):  
Volkan Yamacli ◽  
Kadir Abaci
Keyword(s):  
Neural Networks ◽  
Artificial Neural Networks ◽  
Power System ◽  
High Voltage ◽  
Power Converters ◽  
Optimization Problems ◽  
Search Algorithm ◽  
Solution Space ◽  
System Stability ◽  
Artificial Neural

Abstract Optimal control of power converters to avoid voltage instability in cases such as system loading or faults is one of the most studied nonlinear problems that affect energy quality in power systems. The optimization problem related to converter control becomes more difficult with the inclusion of renewable energy systems while trying to fulfill power system constraints and providing an adequate amount of energy. In this paper, a simple approach based on artificial neural networks (ANNs) has been proposed and applied to photovoltaic-fed high-voltage DC and high-voltage AC systems interconnection consisting of PI-controlled power converters. By using the proposed method, converter control parameters are optimized for different cases to improve steady-state and dynamic voltage stability while also avoiding any kind of system faults. In order to implement hybrid control methodology by using ANN and PI control, the network should be well trained with samples including not only global best values but also the whole possible system characteristic. For this reason, a novel optimization algorithm, differential search algorithm, is used to sample solution space and train ANN by using random and localized samples. Obtained and presented results of the proposed approach show that due to robust and fast response, ANNs can be successfully used to overcome nonlinear security and optimization problems concerning power system stability.

scholarly journals Aircraft Electric Machines

2021 ◽  
pp. 53-58
Author(s):  
Martin Schrötter ◽  
František Adamčík ◽  
Natália Gecejová ◽  
Olena Kozhokhina
Keyword(s):  
Power System ◽  
Power Converters ◽  
Electrical Power ◽  
Current Trend ◽  
Electric Machines ◽  
Electric Motors ◽  
Electrical Power System ◽  
Electrical Drives ◽  
Electrical Loads ◽  
Positive Effect

Current trend in aviation is to increase efficiency of all the aircraft’s systems. This leads to a reduction of fuel consumption which has also positive effect on emissions. One possibility how to reach this aim is to replace hydraulic and pneumatic system with an electrical power system. Because many on-board electrical loads are in the form of electrical drives, the special attention is given to electric motors and their electronic speed controllers / power converters. Furthermore, electric motors suitable for traction/propulsion are presented. Moreover, the various types of starter/generators suitable for on-board utilisation are compared in the paper.

scholarly journals Distributed Power System Virtual Inertia Implemented by Grid-Connected Power Converters

2018 ◽  
Vol 33 (10) ◽  
pp. 8488-8499 ◽  
Author(s):  
Jingyang Fang ◽  
Hongchang Li ◽  
Yi Tang ◽  
Frede Blaabjerg
Keyword(s):  
Power System ◽  
Power Converters ◽  
Distributed Power ◽  
Distributed Power System ◽  
Virtual Inertia

Wind power converters improving the power system stability

2016 ◽  
Vol 10 (7) ◽  
pp. 1622-1633 ◽  
Author(s):  
Andres E. Leon ◽  
Guillermo E. Alonso ◽  
Gustavo Revel ◽  
Diego M. Alonso
Keyword(s):  
Power System ◽  
Wind Power ◽  
Power Converters ◽  
Power System Stability ◽  
System Stability
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