Comparative Study of Current Controllers for Shunt Active Power Compensators used in Smart Grids Applications

2013 ◽  
pp. 256-261 ◽  
Author(s):  
J.C. Alfonso Gil ◽  
C. Ariño ◽  
H. Beltran ◽  
E. Perez
Keyword(s):  
Comparative Study ◽  
Smart Grids ◽  
Active Power

scholarly journals Flexible Active Power Control for PV-ESS Systems: A Review

Energies ◽  
2021 ◽  
Vol 14 (21) ◽  
pp. 7388
Author(s):  
Xiangqiang Wu ◽  
Tamas Kerekes
Keyword(s):  
Energy Storage ◽  
Solar Energy ◽  
Power Control ◽  
Smart Grids ◽  
Low Voltage ◽  
Storage Systems ◽  
Distribution Networks ◽  
Active Power ◽  
Energy Storage Systems ◽  
Active Power Control

The penetration of solar energy in the modern power system is still increasing with a fast growth rate after long development due to reduced environmental impact and ever-decreasing photovoltaic panel cost. Meanwhile, distribution networks have to deal with a huge amount and frequent fluctuations of power due to the intermittent nature of solar energy, which influences the grid stability and could cause a voltage rise in the low-voltage grid. In order to reduce these fluctuations and ensure a stable and reliable power supply, energy storage systems are introduced, as they can absorb or release energy on demand, which provides more control flexibility for PV systems. At present, storage technologies are still under development and integrated in renewable applications, especially in smart grids, where lowering the cost and enhancing the reliability are the main tasks. This study reviews and discusses several active power control strategies for hybrid PV and energy storage systems that deliver ancillary services for grid support. The technological advancements and developments of energy storage systems in grid-tied PV applications are also reviewed.

Comparative Study of Adaptive Hamiltonian Control Laws for DC Microgrid Stabilization: An Fuel Cell Boost Converter

2021 ◽  
Author(s):  
Damien Guilbert ◽  
Babak Nahid-Mobarakeh ◽  
Serge Pierfederici ◽  
Nicu Bizon ◽  
Pongsiri Mungporn ◽  
...  
Keyword(s):  
Fuel Cell ◽  
Comparative Study ◽  
Smart Grids ◽  
Boost Converter ◽  
Proton Exchange ◽  
Small Scale ◽  
Control Law ◽  
Energy Storage Devices ◽  
Control Laws ◽  
Power Sources

Future smart grids can be seen as a system of interlinked microgrids, including small-scale local power systems. They consist of main power sources, external loads, and energy storage devices. In these microgrids, the negative incremental impedance behavior of constant power loads (CPLs) is of major concern since it can lead to instability and oscillations. To cope with this issue, this article aims to propose a comparative study of adaptive Hamiltonian control laws, also known as interconnection and damping–assignment–passivity–based controllers (IDA-PBC). These control laws are developed to ensure the stability of the DC output voltage of a boost converter supplied by a proton exchange membrane fuel cell (PEMFC) source. To validate the develop control laws, experiments have been performed on a fit test bench including a real 2.5 kW PEMFC stack (hydrogen is supplied by a reformer engine), a DC-DC step-up circuit, and a real-time controller dSPACE (implementation of the control laws). Moreover, a comparative study has been carried out between the proposed three adaptive Hamiltonian control laws and a classic linear cascaded proportional–integral (PI) control law. The obtained results by simulations through MATLAB/SimulinkTM and experimentally have allowed demonstrating that the third Hamiltonian control law presents the best performances over the other control laws.

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