Pub Date : 2023-07-27DOI: 10.1177/0309524x231188950
Z. Pouransari, Mohadese Behzad
A numerical simulation study on the combination of a Darrieus and a Savonius wind turbine is conducted. Hybrid T-II, T-III, and T-IV turbines are suggested with the same Darrieus turbine T-I. In the T-II and T-III, the Savonius turbine is at the center of the Darrieus turbine, whereas in the T-IV, the Savonius turbine is above the Darrieus turbine. The T-III Savonius turbine has half the radius of that of the T-II turbine. Results reveal that variations of the power coefficients, Cp with the tip speed ratio, TSR for the hybrid turbines have different slopes. It is observed that Cp increases with increasing TSR for the T-II and T-IV and does not decrease for the range of TSRs considered, in contrast with the Cp behavior of the T-I. The proposed hybrid T-IV turbine has also a larger Cp than the T-I turbine at the highest TSR.
{"title":"Numerical investigation of the aerodynamic performance of a hybrid Darrieus-Savonius wind turbine","authors":"Z. Pouransari, Mohadese Behzad","doi":"10.1177/0309524x231188950","DOIUrl":"https://doi.org/10.1177/0309524x231188950","url":null,"abstract":"A numerical simulation study on the combination of a Darrieus and a Savonius wind turbine is conducted. Hybrid T-II, T-III, and T-IV turbines are suggested with the same Darrieus turbine T-I. In the T-II and T-III, the Savonius turbine is at the center of the Darrieus turbine, whereas in the T-IV, the Savonius turbine is above the Darrieus turbine. The T-III Savonius turbine has half the radius of that of the T-II turbine. Results reveal that variations of the power coefficients, Cp with the tip speed ratio, TSR for the hybrid turbines have different slopes. It is observed that Cp increases with increasing TSR for the T-II and T-IV and does not decrease for the range of TSRs considered, in contrast with the Cp behavior of the T-I. The proposed hybrid T-IV turbine has also a larger Cp than the T-I turbine at the highest TSR.","PeriodicalId":51570,"journal":{"name":"Wind Engineering","volume":"62 1","pages":""},"PeriodicalIF":1.5,"publicationDate":"2023-07-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"85662678","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2023-07-26DOI: 10.1177/0309524x231185322
J. Cimorelli, Brian Hammerstrom, C. Niezrecki, Xinfang Jin
To meet 2050 decarbonization goals, Massachusetts will not be able to rely on carbon intensive energy sources (e.g. natural gas and gasoline) and hydrogen has been considered a replacement. To produce hydrogen without carbon emissions, renewable energy sources will be used to power electrolyzer stacks. However, renewable energy sources will also be in high demand for other energy sectors, such as automobiles and electrification. This paper estimates the amount of wind energy needed to replace natural gas with hydrogen and electrify automobiles. Comparisons are also made for a scenario in which heat pumps are used to replace natural gas. These energy sectors represent the bulk of energy consumed within Massachusetts and are of high interest to stakeholders globally. The analysis reveals the daunting amount of wind energy needed for replacement and that it is highly unlikely for hydrogen to replace natural gas in time to meet the state’s climate goals.
{"title":"Estimate of the wind energy needed to replace natural gas with hydrogen, and electrify heat pumps and automobiles in Massachusetts","authors":"J. Cimorelli, Brian Hammerstrom, C. Niezrecki, Xinfang Jin","doi":"10.1177/0309524x231185322","DOIUrl":"https://doi.org/10.1177/0309524x231185322","url":null,"abstract":"To meet 2050 decarbonization goals, Massachusetts will not be able to rely on carbon intensive energy sources (e.g. natural gas and gasoline) and hydrogen has been considered a replacement. To produce hydrogen without carbon emissions, renewable energy sources will be used to power electrolyzer stacks. However, renewable energy sources will also be in high demand for other energy sectors, such as automobiles and electrification. This paper estimates the amount of wind energy needed to replace natural gas with hydrogen and electrify automobiles. Comparisons are also made for a scenario in which heat pumps are used to replace natural gas. These energy sectors represent the bulk of energy consumed within Massachusetts and are of high interest to stakeholders globally. The analysis reveals the daunting amount of wind energy needed for replacement and that it is highly unlikely for hydrogen to replace natural gas in time to meet the state’s climate goals.","PeriodicalId":51570,"journal":{"name":"Wind Engineering","volume":"29 1","pages":""},"PeriodicalIF":1.5,"publicationDate":"2023-07-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"88145516","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2023-07-26DOI: 10.1177/0309524x231188941
Yuanxiang Luo, Yang Feng, Cheng Liu, M. Guan, Linshu Cai
In order to solve the problem of system inertia reduction and frequency response degradation caused by large-scale wind power interconnection, a strategy is proposed. This strategy incorporates a joint system model composed of doubly-fed wind turbine (DFWT) and variable speed pumped storage (VSPS), utilizing a fuzzy controller to dynamically determine the virtual inertia coefficient of the wind-pumped storage system based on the frequency state of the system, and adjusts the frequency-regulation participation factor of the DFWT in real time according to the operating conditions of it. The simulation results show that the proposed strategy can not only significantly improve the frequency nadir, speed up the system frequency and each generating unit in the system to restore to steady state, but also avoid the second frequency drop (SFD) caused by the wind farm out of primary frequency regulation (PFR), and improve the stability of the system frequency.
{"title":"Cooperative control strategy for frequency regulation of wind-pumped storage system considering wind speed partition","authors":"Yuanxiang Luo, Yang Feng, Cheng Liu, M. Guan, Linshu Cai","doi":"10.1177/0309524x231188941","DOIUrl":"https://doi.org/10.1177/0309524x231188941","url":null,"abstract":"In order to solve the problem of system inertia reduction and frequency response degradation caused by large-scale wind power interconnection, a strategy is proposed. This strategy incorporates a joint system model composed of doubly-fed wind turbine (DFWT) and variable speed pumped storage (VSPS), utilizing a fuzzy controller to dynamically determine the virtual inertia coefficient of the wind-pumped storage system based on the frequency state of the system, and adjusts the frequency-regulation participation factor of the DFWT in real time according to the operating conditions of it. The simulation results show that the proposed strategy can not only significantly improve the frequency nadir, speed up the system frequency and each generating unit in the system to restore to steady state, but also avoid the second frequency drop (SFD) caused by the wind farm out of primary frequency regulation (PFR), and improve the stability of the system frequency.","PeriodicalId":51570,"journal":{"name":"Wind Engineering","volume":"12 1","pages":""},"PeriodicalIF":1.5,"publicationDate":"2023-07-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"87999852","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2023-07-16DOI: 10.1177/0309524x231186762
M. Tuka, Salem Molla Endale
A Doubly Fed Induction Generator has a stator winding directly coupled with grid whereas rotor is to the grid via a fault-prone converter. In early times, when a fault occurred, these generators were required to disengage from the grid. However, due to the increased penetration, grid operators demanded WTs remain connected to the grid. Thus, this paperwork integrates crowbar protection with a Battery Energy Storage System (BESS) to improve Fault Ride Through (FRT) capability. For performance evaluation under transient conditions, a three-phase symmetrical fault is imposed at a time of 2 seconds. By using the suggested technique, the DC-link voltage is observed to improve and remain at 1150 V with minor fluctuation. Likewise, the stator and rotor currents are observed to remain at their nominal value after 2.15 seconds. MATLAB-Simulink software is used for modeling and simulation by obtaining all the system’s actual parameters from ADAMA-II Wind Farm.
{"title":"Analysis of Doubly Fed Induction Generator-based wind turbine system for fault ride through capability investigations","authors":"M. Tuka, Salem Molla Endale","doi":"10.1177/0309524x231186762","DOIUrl":"https://doi.org/10.1177/0309524x231186762","url":null,"abstract":"A Doubly Fed Induction Generator has a stator winding directly coupled with grid whereas rotor is to the grid via a fault-prone converter. In early times, when a fault occurred, these generators were required to disengage from the grid. However, due to the increased penetration, grid operators demanded WTs remain connected to the grid. Thus, this paperwork integrates crowbar protection with a Battery Energy Storage System (BESS) to improve Fault Ride Through (FRT) capability. For performance evaluation under transient conditions, a three-phase symmetrical fault is imposed at a time of 2 seconds. By using the suggested technique, the DC-link voltage is observed to improve and remain at 1150 V with minor fluctuation. Likewise, the stator and rotor currents are observed to remain at their nominal value after 2.15 seconds. MATLAB-Simulink software is used for modeling and simulation by obtaining all the system’s actual parameters from ADAMA-II Wind Farm.","PeriodicalId":51570,"journal":{"name":"Wind Engineering","volume":"60 1","pages":""},"PeriodicalIF":1.5,"publicationDate":"2023-07-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"84945468","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2023-07-14DOI: 10.1177/0309524x231185325
A. Berry, M. Ibrahim
Due unexpected nature of renewable energy systems, the (Wind/Diesel/Battery) (W/D/B) off-grid system has initially been investigated at a South Sinai location in Egypt for home-scale consumption. Eight different systems, each of which consists of a small wind turbine, storage batteries, and diesel generator, are investigated in accordance with the varying needs of the power loads and seasonal weather data. The major goal is to investigate how adding wind power as an energy source will affect the price of electricity generated while taking into account the cost of reducing CO2 emissions as an external benefit of the wind turbine, which emits no pollutants during operation. In order to compare a Taguchi OA design to a two-level full factorial design to evaluate the systems at two separate sites (South Sinai and the Western Desert in Egypt), a design evaluation tool in DOE++ will be used. To pinpoint the crucial variables and analyze the impact of six different factors on eight different sets, Taguchi OA is used. The proportion of power shortfall is a production indicator, while the net present cost (NPC) and cost of energy (COE) are used as economic indicators. The simulation results demonstrate that W/D/B systems are economically viable for the hypothetical community site when using HOMER software, with electricity generated at a cost of about 0.285$/kWh without accounting for external benefits and 0.221$/kWh if CO2 emissions are competitive with diesel-only systems, where COE is 0.432$/kWh. As a new evaluation approach, the Box-Cox transformation calculated the best λ is about −2 at the two locations, indicating similar technique behaviors, and the fitted probability shows, meaning that the significant impact of system components are wind turbines. Regression model of CO2 emission is demonstrated to be successful for estimates at the Western Desert location than the South Sinai region
{"title":"Optimization of wind off-grid system for remote area: Egyptian application","authors":"A. Berry, M. Ibrahim","doi":"10.1177/0309524x231185325","DOIUrl":"https://doi.org/10.1177/0309524x231185325","url":null,"abstract":"Due unexpected nature of renewable energy systems, the (Wind/Diesel/Battery) (W/D/B) off-grid system has initially been investigated at a South Sinai location in Egypt for home-scale consumption. Eight different systems, each of which consists of a small wind turbine, storage batteries, and diesel generator, are investigated in accordance with the varying needs of the power loads and seasonal weather data. The major goal is to investigate how adding wind power as an energy source will affect the price of electricity generated while taking into account the cost of reducing CO2 emissions as an external benefit of the wind turbine, which emits no pollutants during operation. In order to compare a Taguchi OA design to a two-level full factorial design to evaluate the systems at two separate sites (South Sinai and the Western Desert in Egypt), a design evaluation tool in DOE++ will be used. To pinpoint the crucial variables and analyze the impact of six different factors on eight different sets, Taguchi OA is used. The proportion of power shortfall is a production indicator, while the net present cost (NPC) and cost of energy (COE) are used as economic indicators. The simulation results demonstrate that W/D/B systems are economically viable for the hypothetical community site when using HOMER software, with electricity generated at a cost of about 0.285$/kWh without accounting for external benefits and 0.221$/kWh if CO2 emissions are competitive with diesel-only systems, where COE is 0.432$/kWh. As a new evaluation approach, the Box-Cox transformation calculated the best λ is about −2 at the two locations, indicating similar technique behaviors, and the fitted probability shows, meaning that the significant impact of system components are wind turbines. Regression model of CO2 emission is demonstrated to be successful for estimates at the Western Desert location than the South Sinai region","PeriodicalId":51570,"journal":{"name":"Wind Engineering","volume":"16 1","pages":""},"PeriodicalIF":1.5,"publicationDate":"2023-07-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"87644951","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2023-07-12DOI: 10.1177/0309524x231187152
Jaclyn Solimine, M. Inalpolat
This paper proposes a new in-situ damage detection approach for wind turbine blades, which leverages blade-internal non-stationary acoustic pressure fluctuations caused by the mechanical loading as the main source of excitation. This acoustic excitation was leveraged for the detection of fatigue-related damage modes on a full-scale wind turbine blade undergoing edgewise fatigue testing. An unsupervised, data-driven structural health monitoring strategy was developed to learn the normal cavity-internal acoustic sequences generated by the blade’s load cycles and to detect damage-related anomalies in the context of those sequences. A linear cepstral-coefficient based feature set was used to characterize the cavity-internal acoustics and LSTM-autoencoders were trained to accurately reconstruct healthy-case sequences. The reconstruction error was then used to characterize anomalous acoustic patterns within the blade cavity. The technique was able to detect a damage event earlier than a strain-based system by 120,000 load cycles.
{"title":"Unsupervised acoustic detection of fatigue-induced damage modes from wind turbine blades","authors":"Jaclyn Solimine, M. Inalpolat","doi":"10.1177/0309524x231187152","DOIUrl":"https://doi.org/10.1177/0309524x231187152","url":null,"abstract":"This paper proposes a new in-situ damage detection approach for wind turbine blades, which leverages blade-internal non-stationary acoustic pressure fluctuations caused by the mechanical loading as the main source of excitation. This acoustic excitation was leveraged for the detection of fatigue-related damage modes on a full-scale wind turbine blade undergoing edgewise fatigue testing. An unsupervised, data-driven structural health monitoring strategy was developed to learn the normal cavity-internal acoustic sequences generated by the blade’s load cycles and to detect damage-related anomalies in the context of those sequences. A linear cepstral-coefficient based feature set was used to characterize the cavity-internal acoustics and LSTM-autoencoders were trained to accurately reconstruct healthy-case sequences. The reconstruction error was then used to characterize anomalous acoustic patterns within the blade cavity. The technique was able to detect a damage event earlier than a strain-based system by 120,000 load cycles.","PeriodicalId":51570,"journal":{"name":"Wind Engineering","volume":"45 2 1","pages":""},"PeriodicalIF":1.5,"publicationDate":"2023-07-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"80002761","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2023-07-12DOI: 10.1177/0309524x231187044
Sorena Artin
Consideration of safety is one of the current requirements to design a new system that is often implemented by defining the system failure probability. Renewable energy systems (RESs) do have the same requirements when it comes to safety and reliability. When designing a wind turbine, as a RES, its reliability is of the highest importance. So, efficient reliability models are required to ensure the turbine is working safely to generate electricity. A new model is introduced in this paper by taking into account the wind speed and the wind angle as two effective factors. These two random variables are reported to follow the Gaussian and Weibull probability distributions, and so are employed to define a limit-state function for the turbines. This limit-state function, which is also called system performance function, will then be used to find out the system failure probability.
{"title":"Introducing a new system performance function to formulate reliability analysis problems of wind turbines","authors":"Sorena Artin","doi":"10.1177/0309524x231187044","DOIUrl":"https://doi.org/10.1177/0309524x231187044","url":null,"abstract":"Consideration of safety is one of the current requirements to design a new system that is often implemented by defining the system failure probability. Renewable energy systems (RESs) do have the same requirements when it comes to safety and reliability. When designing a wind turbine, as a RES, its reliability is of the highest importance. So, efficient reliability models are required to ensure the turbine is working safely to generate electricity. A new model is introduced in this paper by taking into account the wind speed and the wind angle as two effective factors. These two random variables are reported to follow the Gaussian and Weibull probability distributions, and so are employed to define a limit-state function for the turbines. This limit-state function, which is also called system performance function, will then be used to find out the system failure probability.","PeriodicalId":51570,"journal":{"name":"Wind Engineering","volume":"21 1","pages":""},"PeriodicalIF":1.5,"publicationDate":"2023-07-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"74373876","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2023-07-08DOI: 10.1177/0309524x231185492
Amita Singh, Veena Sharma, Vineet Kumar, R. Naresh, O. P. Rahi, Vineet Kumar
This research proposes a novel solution for the optimal day-ahead scheduling problem in the GAMS environment using the BARON approach. The challenge is extended to include Renewable Energy Sources (RESs) and Electric Vehicles (EVs), making it more complex and practical. EVs serve as loads, energy suppliers, and storage during RESs’ uncertainties. The framework improves cost savings, quality, reliability, and stability of the power supply system by modeling solar, wind, and EV power in the scheduling problem. The solution is tested on a 10 -unit thermal system considering RESs and EVs under deterministic and stochastic environments. Stochastic scenarios are generated using Monte Carlo simulation, and the simultaneous scenario reduction approach enhances results. The BARON solver outperforms other solvers, achieving profits of $205,321 with wind, solar, and EVs, and $187,297 when considering uncertainty, resulting in a reduction of $18,024.
{"title":"Investigation of PBUC problem with RES and EV in restructured environment","authors":"Amita Singh, Veena Sharma, Vineet Kumar, R. Naresh, O. P. Rahi, Vineet Kumar","doi":"10.1177/0309524x231185492","DOIUrl":"https://doi.org/10.1177/0309524x231185492","url":null,"abstract":"This research proposes a novel solution for the optimal day-ahead scheduling problem in the GAMS environment using the BARON approach. The challenge is extended to include Renewable Energy Sources (RESs) and Electric Vehicles (EVs), making it more complex and practical. EVs serve as loads, energy suppliers, and storage during RESs’ uncertainties. The framework improves cost savings, quality, reliability, and stability of the power supply system by modeling solar, wind, and EV power in the scheduling problem. The solution is tested on a 10 -unit thermal system considering RESs and EVs under deterministic and stochastic environments. Stochastic scenarios are generated using Monte Carlo simulation, and the simultaneous scenario reduction approach enhances results. The BARON solver outperforms other solvers, achieving profits of $205,321 with wind, solar, and EVs, and $187,297 when considering uncertainty, resulting in a reduction of $18,024.","PeriodicalId":51570,"journal":{"name":"Wind Engineering","volume":"25 1","pages":""},"PeriodicalIF":1.5,"publicationDate":"2023-07-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"88364934","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2023-07-04DOI: 10.1177/0309524x231183373
N. Kumar, O. Prakash
Currently, India’s population is growing at a rate comparable to other countries, which means we need to provide more energy. Most of the world’s energy is generated by coal-fired thermal power plants, despite the fact that this method results in a significant increase in the number of pollutants released into the atmosphere. Wind power is a kind of environment-friendly, pollution-free green energy that comes from renewable sources. India is one of the top five producers of wind power in the world. This article throws light upon the current status of wind energy in India, as well as its potential and regulations governing wind energy. India has a significant untapped potential for wind power generation, and this article details that potential as well as wind power generation in various states of India. When it comes to the production of wind power in India, Tamil Nadu is the most productive states.
{"title":"Wind energy potential and its current status in India","authors":"N. Kumar, O. Prakash","doi":"10.1177/0309524x231183373","DOIUrl":"https://doi.org/10.1177/0309524x231183373","url":null,"abstract":"Currently, India’s population is growing at a rate comparable to other countries, which means we need to provide more energy. Most of the world’s energy is generated by coal-fired thermal power plants, despite the fact that this method results in a significant increase in the number of pollutants released into the atmosphere. Wind power is a kind of environment-friendly, pollution-free green energy that comes from renewable sources. India is one of the top five producers of wind power in the world. This article throws light upon the current status of wind energy in India, as well as its potential and regulations governing wind energy. India has a significant untapped potential for wind power generation, and this article details that potential as well as wind power generation in various states of India. When it comes to the production of wind power in India, Tamil Nadu is the most productive states.","PeriodicalId":51570,"journal":{"name":"Wind Engineering","volume":"36 1","pages":""},"PeriodicalIF":1.5,"publicationDate":"2023-07-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"85487739","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2023-06-28DOI: 10.1177/0309524x231183929
S. Tounsi
DC generators have the major drawback of the large number of sliding brush-collar contacts, making this motor structure expensive and requiring a non-negligible maintenance cost. To avoid this problem, an excitation system allowing the excitation current to be reversed after the electromotive force changes polarity is added. The structure of the generator is found by equivalence to a permanent magnet direct current generator structure by changing the magnets by equivalent concentrated coils. A control technique of this type of generator, used in a wind energy production system, is developed to show the efficiency of this type of generator in the field of wind energy production. Related to permanent magnets generators, the studied structure is with reduced production cost since the magnets are replaced by coils. The innovation aspects of the studied generator are the modularity (use of several modules to increase the power delivered by the generator), the elevated efficiency due to the limited number of power chain components, the elevated power to weight ratio, the simplicity of the control and the reduced manufacturing cost. In conclusion, the use of the studied generator in the wind energy system, makes the power chain simple, inexpensive and robust.
{"title":"Design of innovated structure of wind energy system with reduced manufacturing cost and optimized efficiency","authors":"S. Tounsi","doi":"10.1177/0309524x231183929","DOIUrl":"https://doi.org/10.1177/0309524x231183929","url":null,"abstract":"DC generators have the major drawback of the large number of sliding brush-collar contacts, making this motor structure expensive and requiring a non-negligible maintenance cost. To avoid this problem, an excitation system allowing the excitation current to be reversed after the electromotive force changes polarity is added. The structure of the generator is found by equivalence to a permanent magnet direct current generator structure by changing the magnets by equivalent concentrated coils. A control technique of this type of generator, used in a wind energy production system, is developed to show the efficiency of this type of generator in the field of wind energy production. Related to permanent magnets generators, the studied structure is with reduced production cost since the magnets are replaced by coils. The innovation aspects of the studied generator are the modularity (use of several modules to increase the power delivered by the generator), the elevated efficiency due to the limited number of power chain components, the elevated power to weight ratio, the simplicity of the control and the reduced manufacturing cost. In conclusion, the use of the studied generator in the wind energy system, makes the power chain simple, inexpensive and robust.","PeriodicalId":51570,"journal":{"name":"Wind Engineering","volume":"75 1","pages":""},"PeriodicalIF":1.5,"publicationDate":"2023-06-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"89754043","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
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