Wind Energy Conversion Systems (WECS) have become a focal point in the research of renewable ener... more Wind Energy Conversion Systems (WECS) have become a focal point in the research of renewable energy sources. This paper provides then a comparative study of past and present generator technologies used in WECS. This study is based on an exhaustive review of the state of the art and on an effective comparison of the performances of the four main topologies that are permanent magnet generators, synchronous generators, induction generators and doubly-fed induction generators. The different generator-WECS schemes are compared on the basis of topology, cost, efficiency, power consumption and control complexity. Moreover, attempts are made to highlight future issues so as to index some emerging solutions.
This paper describes a second-order sliding mode control for a permanent magnet synchronous gener... more This paper describes a second-order sliding mode control for a permanent magnet synchronous generator-based marine current turbine dealing with the generator-side converter faulty conditions. Marine turbine system mainly used PI controllers. However, this type of controllers is unfortunately very sensitive to faulty conditions as those affect the system converter. In this faulty context, the marine turbine system power generation and dynamic performances are highly degraded. In order to maintain a minimum of optimal performance, second-order sliding modes are therefore investigated for fault-tolerant control purposes.
This paper presents a review of the stream current power sector, with a distinction made between ... more This paper presents a review of the stream current power sector, with a distinction made between the marine (MCP) and the river/estuary current power (RECP). Although scientific literature about MCP is actually well defined, that about RECP seems small, though this domain has some research interest. This paper has thus a special emphasis on this latter, with comparative studies done between these domains. The assessment of the academic and industrial interests for the RECP is first addressed, based on two main scientific resources and a qualitative highlight of its potential. Then, a review of actual constraints restricting its development is introduced, followed by a non-exhaustive presentation of industrial projects. Finally, some development prospects allowing constraints to be mitigated are proposed. Globally, MCP and RECP are treated unconcernedly, with a primary interest on the mechanical converter study and the location energy potential estimation. It has been highlighted tha...
2007 IEEE International Electric Machines & Drives Conference, 2007
... U failure [11]. L For the above reasons, the proposed review will be 005 ... scaning the avai... more ... U failure [11]. L For the above reasons, the proposed review will be 005 ... scaning the availableliterature, it has been found that fault rotor converter connected to the rotor via slip rings [6], [26]. ... Fig. 9. Lightning protection for large modern wind turbine blades [31]. ...
... PC Load Tacho Generator Da ta A c q . C a rd R S T ... 55, n°2, pp., 522-533, February 2008. ... more ... PC Load Tacho Generator Da ta A c q . C a rd R S T ... 55, n°2, pp., 522-533, February 2008. [6] M. Riera-Guasp, J. Antonio-Daviu, J. Roger-Folch, and MPM Palomares, “The use of the wavelet approximation signal as a tool for the diagnosis of rotor bar failure,” IEEE Trans. ...
IECON 2013 - 39th Annual Conference of the IEEE Industrial Electronics Society, 2013
ABSTRACT This paper deals with the Fault Ride-Through (FRT) capability assessment of a Doubly-Fed... more ABSTRACT This paper deals with the Fault Ride-Through (FRT) capability assessment of a Doubly-Fed Induction Generator (DFIG)-based Wind Turbine (WT) using High-Order Sliding Mode (HOSM) control. Indeed, it has been recently suggested that sliding mode control is a solution of choice to the FRT problem. In this context, this paper proposes HOSM as an improved solution that handle the classical sliding mode chattering problem. Indeed, the main and attractive features of HOSMs are robustness against external disturbances (e.g. grid) and chattering-free behavior (no extra mechanical stress on the drive train). Simulations using the NREL FAST code on a 1.5-MW wind turbine are carried-out to evaluate ride-through performance of the proposed HOSM control strategy in case of grid frequency variations and unbalanced voltage sags.
IECON 2013 - 39th Annual Conference of the IEEE Industrial Electronics Society, 2013
ABSTRACT Smart grids have initiated a radical reappraisal of distribution networks function where... more ABSTRACT Smart grids have initiated a radical reappraisal of distribution networks function where the integration of renewable energy sources, load demand control, and effective use of the network are indexed as the most important keys for smart grid expansion and deployment regardless each country policies. One of the most efficient ways of effective use of these grids would be to continuously monitor their conditions. This allows for early detection of power quality degeneration facilitating therefore a proactive response, prevent a fault ride-through the renewable power sources, minimizing downtime, and maximizing productivity. In this smart grid context, this paper proposes the evaluation and comparison of advanced signal processing tools, namely the Hilbert transform and the ensemble empirical mode decomposition method for the detection of voltage sags as they are the most commonly encountered power quality disturbances.
In recent years the electric power generation has entered into a new development era, which can b... more In recent years the electric power generation has entered into a new development era, which can be described mainly by increasing concerns about climate change, through the energy transition from hydrocarbon to clean energy resources. In order to power system enhance reliability, efficiency and safety, renewable and nonrenewable resources are integrated together to configure so-called hybrid systems. Despite the experience accumulated in the power networks, designing hybrid system is a complex task. It has become more challenging as far as most renewable energy resources are random and weather/climatic conditions-dependant. In this challenging context, this paper proposes a critical state-of-the-art review of hybrid generation systems planning expansion and indexes multi-objective methods as strategies for hybrid energy systems optimal design to satisfy technical and economical constraints.
2008 18th International Conference on Electrical Machines, 2008
... Figures 3 and 4 show respectively one of the most used wind turbine configuration (DFIG) and ... more ... Figures 3 and 4 show respectively one of the most used wind turbine configuration (DFIG) and its main components [6-7]. Fig. 2. Currently largest onshore wind turbine and offshore installations. ... Frequency Converter Wind Turbine Control Main Circuit Breaker ...
International Review on Modelling and Simulations (IREMOS), 2014
ABSTRACT This paper deals with a new algorithm allowing short-circuit and impedance faults smart ... more ABSTRACT This paper deals with a new algorithm allowing short-circuit and impedance faults smart diagnosis of PV generators. It is based on the use of the SVM technique for the classification of observations not located in its margin, otherwise the proposed algorithm is used a k-NN method. A PV generator database containing observations distributed over classes is used for testing the new algorithm performance, which shows therefore its contribution and its effectiveness in the diagnosis area. Current / Voltage of PV cell I/V Group Current / Voltage of PV group I/V Module Current / Voltage of PV module I/V String Current / Voltage of PV string I Bypass_Diode Bypass diode current R s series resistance t Temperature
Wind Energy Conversion Systems (WECS) have become a focal point in the research of renewable ener... more Wind Energy Conversion Systems (WECS) have become a focal point in the research of renewable energy sources. This paper provides then a comparative study of past and present generator technologies used in WECS. This study is based on an exhaustive review of the state of the art and on an effective comparison of the performances of the four main topologies that are permanent magnet generators, synchronous generators, induction generators and doubly-fed induction generators. The different generator-WECS schemes are compared on the basis of topology, cost, efficiency, power consumption and control complexity. Moreover, attempts are made to highlight future issues so as to index some emerging solutions.
This paper describes a second-order sliding mode control for a permanent magnet synchronous gener... more This paper describes a second-order sliding mode control for a permanent magnet synchronous generator-based marine current turbine dealing with the generator-side converter faulty conditions. Marine turbine system mainly used PI controllers. However, this type of controllers is unfortunately very sensitive to faulty conditions as those affect the system converter. In this faulty context, the marine turbine system power generation and dynamic performances are highly degraded. In order to maintain a minimum of optimal performance, second-order sliding modes are therefore investigated for fault-tolerant control purposes.
This paper presents a review of the stream current power sector, with a distinction made between ... more This paper presents a review of the stream current power sector, with a distinction made between the marine (MCP) and the river/estuary current power (RECP). Although scientific literature about MCP is actually well defined, that about RECP seems small, though this domain has some research interest. This paper has thus a special emphasis on this latter, with comparative studies done between these domains. The assessment of the academic and industrial interests for the RECP is first addressed, based on two main scientific resources and a qualitative highlight of its potential. Then, a review of actual constraints restricting its development is introduced, followed by a non-exhaustive presentation of industrial projects. Finally, some development prospects allowing constraints to be mitigated are proposed. Globally, MCP and RECP are treated unconcernedly, with a primary interest on the mechanical converter study and the location energy potential estimation. It has been highlighted tha...
2007 IEEE International Electric Machines & Drives Conference, 2007
... U failure [11]. L For the above reasons, the proposed review will be 005 ... scaning the avai... more ... U failure [11]. L For the above reasons, the proposed review will be 005 ... scaning the availableliterature, it has been found that fault rotor converter connected to the rotor via slip rings [6], [26]. ... Fig. 9. Lightning protection for large modern wind turbine blades [31]. ...
... PC Load Tacho Generator Da ta A c q . C a rd R S T ... 55, n°2, pp., 522-533, February 2008. ... more ... PC Load Tacho Generator Da ta A c q . C a rd R S T ... 55, n°2, pp., 522-533, February 2008. [6] M. Riera-Guasp, J. Antonio-Daviu, J. Roger-Folch, and MPM Palomares, “The use of the wavelet approximation signal as a tool for the diagnosis of rotor bar failure,” IEEE Trans. ...
IECON 2013 - 39th Annual Conference of the IEEE Industrial Electronics Society, 2013
ABSTRACT This paper deals with the Fault Ride-Through (FRT) capability assessment of a Doubly-Fed... more ABSTRACT This paper deals with the Fault Ride-Through (FRT) capability assessment of a Doubly-Fed Induction Generator (DFIG)-based Wind Turbine (WT) using High-Order Sliding Mode (HOSM) control. Indeed, it has been recently suggested that sliding mode control is a solution of choice to the FRT problem. In this context, this paper proposes HOSM as an improved solution that handle the classical sliding mode chattering problem. Indeed, the main and attractive features of HOSMs are robustness against external disturbances (e.g. grid) and chattering-free behavior (no extra mechanical stress on the drive train). Simulations using the NREL FAST code on a 1.5-MW wind turbine are carried-out to evaluate ride-through performance of the proposed HOSM control strategy in case of grid frequency variations and unbalanced voltage sags.
IECON 2013 - 39th Annual Conference of the IEEE Industrial Electronics Society, 2013
ABSTRACT Smart grids have initiated a radical reappraisal of distribution networks function where... more ABSTRACT Smart grids have initiated a radical reappraisal of distribution networks function where the integration of renewable energy sources, load demand control, and effective use of the network are indexed as the most important keys for smart grid expansion and deployment regardless each country policies. One of the most efficient ways of effective use of these grids would be to continuously monitor their conditions. This allows for early detection of power quality degeneration facilitating therefore a proactive response, prevent a fault ride-through the renewable power sources, minimizing downtime, and maximizing productivity. In this smart grid context, this paper proposes the evaluation and comparison of advanced signal processing tools, namely the Hilbert transform and the ensemble empirical mode decomposition method for the detection of voltage sags as they are the most commonly encountered power quality disturbances.
In recent years the electric power generation has entered into a new development era, which can b... more In recent years the electric power generation has entered into a new development era, which can be described mainly by increasing concerns about climate change, through the energy transition from hydrocarbon to clean energy resources. In order to power system enhance reliability, efficiency and safety, renewable and nonrenewable resources are integrated together to configure so-called hybrid systems. Despite the experience accumulated in the power networks, designing hybrid system is a complex task. It has become more challenging as far as most renewable energy resources are random and weather/climatic conditions-dependant. In this challenging context, this paper proposes a critical state-of-the-art review of hybrid generation systems planning expansion and indexes multi-objective methods as strategies for hybrid energy systems optimal design to satisfy technical and economical constraints.
2008 18th International Conference on Electrical Machines, 2008
... Figures 3 and 4 show respectively one of the most used wind turbine configuration (DFIG) and ... more ... Figures 3 and 4 show respectively one of the most used wind turbine configuration (DFIG) and its main components [6-7]. Fig. 2. Currently largest onshore wind turbine and offshore installations. ... Frequency Converter Wind Turbine Control Main Circuit Breaker ...
International Review on Modelling and Simulations (IREMOS), 2014
ABSTRACT This paper deals with a new algorithm allowing short-circuit and impedance faults smart ... more ABSTRACT This paper deals with a new algorithm allowing short-circuit and impedance faults smart diagnosis of PV generators. It is based on the use of the SVM technique for the classification of observations not located in its margin, otherwise the proposed algorithm is used a k-NN method. A PV generator database containing observations distributed over classes is used for testing the new algorithm performance, which shows therefore its contribution and its effectiveness in the diagnosis area. Current / Voltage of PV cell I/V Group Current / Voltage of PV group I/V Module Current / Voltage of PV module I/V String Current / Voltage of PV string I Bypass_Diode Bypass diode current R s series resistance t Temperature
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renewable and nonrenewable resources are integrated together to configure so-called hybrid systems. Despite the experience accumulated in the power networks, designing hybrid system is a complex task. It has become more challenging as far as most renewable energy resources are random and weather/climatic conditions-dependant. In this challenging context, this paper proposes a critical state-of-the-art review of hybrid generation systems planning expansion and indexes multi-objective methods as strategies for hybrid energy systems optimal design to satisfy technical and economical constraints.
renewable and nonrenewable resources are integrated together to configure so-called hybrid systems. Despite the experience accumulated in the power networks, designing hybrid system is a complex task. It has become more challenging as far as most renewable energy resources are random and weather/climatic conditions-dependant. In this challenging context, this paper proposes a critical state-of-the-art review of hybrid generation systems planning expansion and indexes multi-objective methods as strategies for hybrid energy systems optimal design to satisfy technical and economical constraints.