scholarly journals Decentralized Power Management for Electrical Power Systems in More Electric Aircrafts

Electronics ◽  
2018 ◽  
Vol 7 (9) ◽  
pp. 187 ◽  
Author(s):  
Myungchin Kim ◽  
Sung Lee ◽  
Sungwoo Bae
Keyword(s):  
Power Systems ◽  
Power Management ◽  
Electrical Power ◽  
Transient State ◽  
Cost Effective ◽  
Power Sharing ◽  
Management Approach ◽  
Electrical Power Systems ◽  
Power Sources ◽  
Virtual Impedance

In order to implement reliable and flexible power management among energy sources, a decentralized power management approach for electrical power systems (EPSs) in the more electric aircraft (MEA) is studied. Considering the increased use of electrical power for various functions, the performance of MEA would be determined by the design and operation of the EPS. By using a virtual impedance that includes both a resistive term and an inductive term, autonomous power sharing is realized. Because of the frequency dependence in the virtual impedance, different power sharing ratios between steady state and transient state can be considered. Not only the operation of various power sources is coordinated without supervision of a centralized controller, but also the operation profile of each source can be adjusted to meet output characteristics of each source. To demonstrate the effectiveness of the proposed approach, a series of simulations that consider various virtual impedance configurations were conducted. The proposed approach contributes to a higher level of operational flexibility, while enabling reliable and cost-effective management of MEAs.

scholarly journals Hardware-in-the-Loop and Digital Control Techniques Applied to Single-Phase PFC Converters

Electronics ◽  
2021 ◽  
Vol 10 (13) ◽  
pp. 1563
Author(s):  
Paula Lamo ◽  
Angel de Castro ◽  
Alberto Sanchez ◽  
Gustavo A. Ruiz ◽  
Francisco J. Azcondo ◽  
...  
Keyword(s):  
Power Systems ◽  
Digital Control ◽  
Single Phase ◽  
Electrical Power ◽  
Cost Effective ◽  
Power Converter ◽  
Hardware In The Loop ◽  
Electrical Power Systems ◽  
Electrical Grid ◽  
Control Techniques

Power electronic converters for power factor correction (PFC) play a key role in single-phase electrical power systems, ensuring that the line current waveform complies with the applicable standards and grid codes while regulating the DC voltage. Its verification implies significant complexity and cost, since it requires long simulations to verify its behavior, for around hundreds of milliseconds. The development and test of the controller include nominal, abnormal and fault conditions in which the equipment could be damaged. Hardware-in-the-loop (HIL) is a cost-effective technique that allows the power converter to be replaced by a real-time simulation model, avoiding building prototypes in the early stages for the development and validation of the controller. However, the performance-vs-cost trade-off associated with HIL techniques depends on the mathematical models used for replicating the power converter, the load and the electrical grid, as well as the hardware platform chosen to build it, e.g., microprocessor or FPGA, and the required number of channels and I/O types to test the system. This work reviews state-of-the-art HIL techniques and digital control techniques for single-phase PFC converters.

scholarly journals Scheduling of Diesel Generators Operation with Restricted PCC in Microgrid

2021 ◽  
Vol 17 (2) ◽  
pp. 108-119
Author(s):  
Nabil Aklo ◽  
Mofeed Rashid
Keyword(s):  
Power Systems ◽  
Energy Cost ◽  
Time Horizon ◽  
Electrical Power ◽  
Cost Effective ◽  
Energy System ◽  
Optimization Method ◽  
Renewable Energy Resources ◽  
Electrical Power Systems ◽  
Diesel Generators

Smart Microgrid (MG) effectively contributes to supporting the electrical power systems as a whole and reducing the burden on the utility grid by the use of unconventional energy generation resources, in addition to backup Diesel Generators (DGs) for reliability increasing. In this paper, potential had been done on day-ahead scheduling of diesel generators and reducing the energy cost reached to the consumers side to side with renewable energy resources, where economical energy and cost-effective MG has been used based on optimization agent called Energy Management System (EMS). Improved Particle Swarm Optimization (IPSO) technique has been used as an optimization method to reduce fuel consumption and obtain the lowest energy cost as well as achieving the best performance to the energy system. Three scenarios are adopted to prove the efficiency of the proposed method. The first scenario uses a 24 hour time horizon to investigate the performance of the model, the second scenario uses two DGs and the third scenario depends on a 48-hour time horizon to validating the performance. The superiority of the proposed method is illustrated by comparing it with PSO and simulation results show using the proposed method can reducing the fuel demand and the energy cost by satisfying the user’s preference.

scholarly journals A Review on Optimal Control for the Smart Grid Electrical Substation Enhancing Transition Stability

Energies ◽  
2021 ◽  
Vol 14 (24) ◽  
pp. 8451
Author(s):  
Wilson Pavon ◽  
Esteban Inga ◽  
Silvio Simani ◽  
Maddalena Nonato
Keyword(s):  
Optimal Control ◽  
Energy Consumption ◽  
Power Systems ◽  
Transient Stability ◽  
Electrical Power ◽  
Reference Signal ◽  
Transient State ◽  
Optimization Techniques ◽  
Smart Power ◽  
Electrical Power Systems

This paper is a research article for finding the optimal control of smart power substations for improving the network parameters and reliability. The included papers are the most essential and main studies in the field, which propose a different approach to reach the best performance in electrical power systems. The parameters for improvement are the ability for tracking of the reference signal, stabilizing the system, reducing the error in steady state and controlling the behavior in transient state. The research focuses with the reaching a better transient stability considering voltage and frequency dynamic parameters. The optimal model for the control is focused on minimizing energy consumption but maintaining the controllable parameters, exploring some optimization techniques to find the optimal control, with of aim of minimizing the response time, the energy consumption, and maximizing the reliability by means of improving the controller to be more robust.

Voltage Quality in Electrical Power Systems

2001 ◽  
Author(s):  
J. Schlabbach ◽  
D. Blume ◽  
T. Stephanblome
Keyword(s):  
Power Systems ◽  
Electrical Power ◽  
Electrical Power Systems ◽  
Voltage Quality
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