Mamadou Baïlo CAMARA - Academia.edu (original) (raw)

Papers by Mamadou Baïlo CAMARA

Processes

Mining sites that combine energy-intensive operations with community living in areas remote from ... more Mining sites that combine energy-intensive operations with community living in areas remote from the electricity grid are increasingly developing dedicated micro-grids. Fossil oil gensets hybridization with renewable energy resources has gained momentum. Difficulties in assessing performance are experienced by operators who wish to benefit from improved performances. The designers of such systems also need additional knowledge to anticipate the solutions of the particular problems related to the power plant’s implementation area characteristics. The proposed approach gives more suitable tools on the effectiveness evaluation of hybridized microgrid, combining a Heavy Fuel Oil (HFO) thermal power station with photovoltaic generator powering mine activities in the Sahelian area. The authors provide key analyses and improvement factors by seasonal behavioral modelling (SBM) of the fuel consumption of the gensets related to the overall irradiance dynamics of the PV array. Several years o...

2016 IEEE International Conference on Automation, Quality and Testing, Robotics (AQTR), 2016

This paper presents energy management improvement for a Hybrid Electric Boat (HEB) applications u... more This paper presents energy management improvement for a Hybrid Electric Boat (HEB) applications using frequency approach. A variable speed Diesel-Permanent Magnet Generator (Diesel-PMG) is assisted by the lithium-battery to satisfy energetic demand of HEB. The lithium-battery module is connected to DC-bus through a buck-boost converter, and that of the variable speed Diesel Generator, it is connected to DC-bus using three phase controlled rectifier. The two DC/AC converters connected to two electric motors are used as thrusters system which enables to emulate energetic demand of Hybrid Electric Boat (HEB) in propulsion operations. The power requirement of thrusters is added to embedded appliances demand to obtain load's profile. The contribution of this paper is focused on load's profile sharing between a variable speed Diesel Generator and Lithium-battery according to the dynamic responses of sources. The performances of proposed method are evaluated through some simulations using MATALB/Simulink software and experimental tests in reduced scale.

2020 22nd European Conference on Power Electronics and Applications (EPE'20 ECCE Europe), 2020

This paper presents an energy management strategy for a multi-source system composed of a fuel ce... more This paper presents an energy management strategy for a multi-source system composed of a fuel cell (FC) as the primary source and supercapacitors (SC) as secondary source. Isolated LLC resonant converter is used to connect the fuel cell to the DC-link, while the supercapacitors are connected through a bidirectional resonant converter. The resonant operation ensures high efficiency and high power density by means of soft switching and high frequency operation. The aim of this paper is the control of the DC-DC resonant converters to share the requested power between the SC and FC according to their dynamic response. So, the Fuel cell supplies the nominal power, while the supercapacitors ensure the mitigation of the fluctuations from the load power. The performances of the proposed topology are evaluated through some simulations.

2015 Intl Aegean Conference on Electrical Machines & Power Electronics (ACEMP), 2015 Intl Conference on Optimization of Electrical & Electronic Equipment (OPTIM) & 2015 Intl Symposium on Advanced Electromechanical Motion Systems (ELECTROMOTION), 2015

This paper presents ultracapacitors (U) and lithium-battery connection with an energy management ... more This paper presents ultracapacitors (U) and lithium-battery connection with an energy management strategy based on the frequency distribution approach. The module of ultracapacitors is linked to DC-bus through the buck-boost converter, and that of the lithium-battery is connected to DC-bus without a converter. DC/AC converter (inverter) and electrical machine (EM) are used to emulate the Hybrid Electric Vehicle (HEV) behavior. The contribution of this paper is focused on demand energy in HEV sharing between ultracapacitors module and battery pack according to the dynamic responses of these sources. The performances of the proposed method are evaluated through some simulations and experimental tests using a dynamic drive cycle.

Proceedings of 14th International Power Electronics and Motion Control Conference EPE-PEMC 2010, 2010

This paper deals a new strategy for wind-diesel hybrid system energy improvement using Ultracapac... more This paper deals a new strategy for wind-diesel hybrid system energy improvement using Ultracapacitors (UC) and Battery. Energy management strategies are focused on the frequencies distribution of the wind generator current between UC and Battery. The developed control laws are based on the knowledge of the dynamic behavior of each source, in aim to prevent the diesel generator against the

IEEE Transactions on Industry Applications, 2015

This paper presents the energy management for the Decentralized Generation Systems (DGS) using th... more This paper presents the energy management for the Decentralized Generation Systems (DGS) using the wind turbine with photovoltaic panels (PV) and the energy storage devices. For a high penetration level of the Wind/PV generation, the energy storage device with a fast response is necessary to cover the shortfall or overflow of generation due to sudden variations of the wind or the sun. In the more, the requested energy by the residential appliances presents the random behavior which can be lower or higher than the produced energy from the renewable sources. Using the wind turbine and the PV power generation system with energy storage will reduce the fluctuations of the wind power and the load ones. The energy storage system requires capital investment, so, it is important to estimate the reasonable storage capacities without an overflow size for the desired applications. In addition, a good strategy for energy management is necessary to reduce the variations impacts of the wind energy and the load for the battery and the residential appliances. The contribution of this paper is focused on energy management based on the frequency approach using the wind/load's fluctuating power sharing, and the polynomial controllers. This method enables firstly, to reduce for the battery and the micro-grid the impacts of the micro-cycles due to the wind/load's power fluctuations. In the secondly, it allow to estimate the energy storage capacity without the overflow size. The performances of the proposed method are evaluated through some simulations, and the experimental tests, using the summer load profile and the winter ones.

IEEE Transactions on Vehicular Technology, 2012

ABSTRACT This paper presents the ultracapacitors (U) and fuel-cell/lithium-battery connection wit... more ABSTRACT This paper presents the ultracapacitors (U) and fuel-cell/lithium-battery connection with an original energy management method for hybrid electric vehicle (HEV) applications. The proposed method is focused on the frequency approach to meet the load energy requirement. The ultracapacitors are connected to the dc link through a buck-boost converter, and the fuel cell is connected to the dc link via a boost converter for the first topology. In the second topology, the lithium battery is connected to the dc link without a converter to avoid the dc-link voltage control. An asynchronous machine is used like the traction motor; it is related to the dc link through a dc/ac converter (inverter). The main contribution of this paper is focused on HEV energy management according to the dynamics (frequency) of the hybrid sources using polynomial correctors. The performances of the proposed method are evaluated through some simulations and the experimental tests, using the New European Driving Cycle (NEDC). This study is extended to an aggressive test cycle, such as the U.S. driving cycle (USDC), to understand the system response and the control performances.

IEEE Transactions on Power Electronics, 2012

This paper presents an embedded energy share method between the high energy storage system (batte... more This paper presents an embedded energy share method between the high energy storage system (battery) and the auxiliary energy storage system such as supercapacitors (SC). Using the SC and battery with a good strategy for energy management improves the performance of hybrid electric vehicles (HEVs). The SC modules are dimensioned for peak power requirement, and the battery&amp;amp;amp;amp;#39;s module ensures the

2005 European Conference on Power Electronics and Applications, 2005

Processes, 2022

Vienna converters have several advantages, including low construction costs, improved total harmo... more Vienna converters have several advantages, including low construction costs, improved total harmonics, and considerable reliability. Generally, they are used in applications with a high switching frequency, particularly in telecommunications, and their use in power generation systems is recent but promising. They can be an interesting solution for medium and large wind power systems as they have the advantage of a high power density compared to traditional two-level converters. In this paper, a wind energy production system based on a Vienna rectifier and the permanent magnet synchronous generator (PMSG) is proposed. The main objective of this work is to evaluate the performance of the vector control strategy of the PMSG associated with the Vienna rectifier considering the real conditions of wind power systems. The feasibility and effectiveness of the proposed control strategy are evaluated through the simulations in MATLAB/Simulink and experimental tests based on a laboratory proto...

IEEE Transactions on Vehicular Technology, 2008

IEEE Transactions on Sustainable Energy, 2013

ABSTRACT The interconnection of the wind generator (WG) and the diesel generator (DG) induces som... more ABSTRACT The interconnection of the wind generator (WG) and the diesel generator (DG) induces some interactions on the common coupling point. These interactions are studied in this paper with the aim of identifying the system limits in performance and proposing an alternative solution. Due to the fast fluctuations of the WG and the DG slow dynamics, ultracapacitors and batteries are used for improving the hybrid system performances and reducing the fuel consumption. The dc-bus voltage is controlled by the diesel engine while providing a smoothed current. To ensure optimized life cycle cost and performance, a lifetime-estimation-based method is proposed. In this method, a rainflow counting method is applied to size the storage devices by taking into account the actual conditions of the system operation. The experimental test bench is designed in a reduced scale. Some simulations and experimental results are presented and analyzed.

IEEE Transactions on Industrial Informatics, 2013

This paper presents the ultracapacitors and the fuel cell (FC) connection for hybrid electric veh... more This paper presents the ultracapacitors and the fuel cell (FC) connection for hybrid electric vehicles (HEVs) applications. An original method for the embedded energy management is proposed. This method is used to share the energetic request of the HEV between the ultracapacitors and the FC. The ultracapacitors are linked to dc-bus through the buck-boost converter, and the FC is connected to dc-bus via a boost converter. An asynchronous machine is used like traction motor or generator, and it is connected to dc-bus through an inverter. A dc-motor is used to drive the asynchronous machine during the decelerations and the braking operations. The main contribution of this paper is focused on the embedded energy management based on the new European drive cycle (NEDC), using polynomial control technique. The performances of the proposed control method are evaluated through some simulations and the experimental tests dedicated to HEVs applications.

IEEE Transactions on Industrial Electronics, 2010

2009 8th International Symposium on Advanced Electromechanical Motion Systems & Electric Drives Joint Symposium, 2009

In this paper, the authors propose a behaviour simulation of a micro power station system for ele... more In this paper, the authors propose a behaviour simulation of a micro power station system for electric power generation in isolated equatorial regions, e.g. Africa and South America. These remote areas have usually a good potential of hydroelectric relative to small community or activity need. They are characterized by sufficient rainfall, which leads to the steady average flow of the rivers. Despite this energy resource the electrical power generation in these regions is more often achieved by the use of diesels generators. The study proposed here deals with a hybrid electrical power station (photovoltaic and hydro turbine based on Doubly-Fed Induction Generator) and diesel generators. Two cases are considered in this paper, the first correspond to active and reactive power management when the Doubly-Fed Induction Generator is coupled to a microgrid. The second case is based on the stator voltage and frequency control when the hybrid electrical power station ensures energy to isolated electric loads. I.

2018 Thirteenth International Conference on Ecological Vehicles and Renewable Energies (EVER)

Energy storage is necessary to ensure the quality and stability of the electricity grid and the a... more Energy storage is necessary to ensure the quality and stability of the electricity grid and the availability of energy when solar or wind renewable energy generation farms are integrated. But, their implementation leads to difficult technical and economic choices for electrical engineering, because a multidisciplinary approach is required. This paper presents a study of the issue of specific energy storage for an offshore wind farm. The study is focused on the potentials of the hydrogen vector which can be used to increase energy services that an offshore wind farm can provide.

2019 International Conference on Clean Electrical Power (ICCEP)

This paper presents a new approach for supercapacitors (SCs) characterization using temporal meth... more This paper presents a new approach for supercapacitors (SCs) characterization using temporal method taking into account the influence of the dynamics constraints, such as number of cycles and rms value of DC-current ripple. This characterization is done using supercapacitor cycler BT2000 test bench. From experimental data, the parameters of the supercapacitor (SC) (series resistance and capacitance) are calculated from the voltage response compared to current input. The contribution of this paper is focused on the parameters dependence study according to the dynamics constraints listed previously (number of cycles and rms value of DC-current ripple). Finally, the experimental results, which show a dependence of series resistance (ESR) and capacitance (C) compared to these constraints, are presented.

2017 IEEE 6th International Conference on Renewable Energy Research and Applications (ICRERA)

This paper describes an energy management strategy for an electric vehicle (EV). The proposed EV ... more This paper describes an energy management strategy for an electric vehicle (EV). The proposed EV architecture contains a pack of the batteries which presents the energy source and a pack of the supercapacitors (SC) used as power source. The pack of the batteries produces the necessary energy to move forward the vehicle while the pack of the SC produces the lacking power in acceleration and in braking phases. Two DC-DC converters are used to interface the energy sources with the DC-bus. A bidirectional DC-AC converter is used to connect the traction motor to the DC-bus. The proposed control method is focused on the power flow management within the EV depending on electrical behavior of the energy sources. The validity of the proposed control strategy is proofed through some reduced scale simulations tests using the New European Driving Cycle (NEDC).

2017 Twelfth International Conference on Ecological Vehicles and Renewable Energies (EVER)

This paper presents energy management strategy for electric vehicle (EV) applications. The propos... more This paper presents energy management strategy for electric vehicle (EV) applications. The proposed method is used to share the requested energy of the EV between the ultracapacitors (UCs) and lithium-batteries. The traction motor is a Permanent Magnet Synchronous Machine (PMSM) controlled by a Voltage-Source-Inverter (VSI) and fed by the UCs and the batteries. The energy storage system (ESS) is connected to DC-bus through two DC-DC converters. The aim of this paper is focused on requested EV power sharing between UCs pack and the batteries pack according to the dynamic response of these sources using anti-windup PI controller. This study is based on a real example of EV, in addition only the traction mode is considered. The performances of the proposed method are evaluated through some simulations using MATALB/Simulink software.

Journal of Energy Storage