The current probe is a card type current sensor, which does not need to contact with the source wire. It can measure the high frequency interference current of the cable without disrupting the normal working state of the tested object. However, in the high-power system, the saturation of the probe and the amplitude of the high frequency interference are relatively small due to the large working current of the fundamental frequency. In order to meet the high frequency interference test of cable under high current condition, we need to improve the design of the current probe. Based on the physical structure of the probe, the equivalent circuit model of the probe is established, and the expression of the key index of the current probe, transmission impedance and insertion impedance, is derived. Starting from the model, the influence of magnetic core material, frequency and winding on the performance of the probe is analyzed. The design process of the current probe is proposed, and the design of the current probe with the effective bandwidth of 10~300MHz and the maximum test current of 100A and the inner diameter of 60mm is completed. The simulation analysis of the model is carried out by the electromagnetic simulation software. The simulation results are compared with the measured data of commercial probes in the market, and the performance of the designed probe is verified.
{"title":"Design of high current broadband electromagnetic probe","authors":"Qing Tian, Meng Li, Jianqiong Zhang, Zhongkang Yuan","doi":"10.1109/CPEEE51686.2021.9383409","DOIUrl":"https://doi.org/10.1109/CPEEE51686.2021.9383409","url":null,"abstract":"The current probe is a card type current sensor, which does not need to contact with the source wire. It can measure the high frequency interference current of the cable without disrupting the normal working state of the tested object. However, in the high-power system, the saturation of the probe and the amplitude of the high frequency interference are relatively small due to the large working current of the fundamental frequency. In order to meet the high frequency interference test of cable under high current condition, we need to improve the design of the current probe. Based on the physical structure of the probe, the equivalent circuit model of the probe is established, and the expression of the key index of the current probe, transmission impedance and insertion impedance, is derived. Starting from the model, the influence of magnetic core material, frequency and winding on the performance of the probe is analyzed. The design process of the current probe is proposed, and the design of the current probe with the effective bandwidth of 10~300MHz and the maximum test current of 100A and the inner diameter of 60mm is completed. The simulation analysis of the model is carried out by the electromagnetic simulation software. The simulation results are compared with the measured data of commercial probes in the market, and the performance of the designed probe is verified.","PeriodicalId":314015,"journal":{"name":"2021 11th International Conference on Power, Energy and Electrical Engineering (CPEEE)","volume":"47 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2021-02-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"129458608","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 : 2021-02-26DOI: 10.1109/CPEEE51686.2021.9383420
Zelong Ni
With the development of smart grid and the advancement of renewable resource utilization technology, power electronic transformers have become an important energy conversion devices. Only AC ports are existed in traditional transformers. But power electronic transformers take into account both DC and AC ports, and have the advantage of facilitating the access of renewable energy compared with traditional AC systems. A three-stage power electronic transformer is proposed, which is composed of a three-phase PWM rectifier, a DAB DC-DC converter, and a three-phase inverter. And using the simulation platform based on MATLAB-SIMULINK to simulate and verify the proposed three-stage power electronic transformer. The verification results show that the power electronic transformer realizes the operation of unity-power factor on the grid side, the output voltage is controllable and it can be connected to the DC port.
{"title":"Research and Design of Three-Stage Power Electronic Transformer","authors":"Zelong Ni","doi":"10.1109/CPEEE51686.2021.9383420","DOIUrl":"https://doi.org/10.1109/CPEEE51686.2021.9383420","url":null,"abstract":"With the development of smart grid and the advancement of renewable resource utilization technology, power electronic transformers have become an important energy conversion devices. Only AC ports are existed in traditional transformers. But power electronic transformers take into account both DC and AC ports, and have the advantage of facilitating the access of renewable energy compared with traditional AC systems. A three-stage power electronic transformer is proposed, which is composed of a three-phase PWM rectifier, a DAB DC-DC converter, and a three-phase inverter. And using the simulation platform based on MATLAB-SIMULINK to simulate and verify the proposed three-stage power electronic transformer. The verification results show that the power electronic transformer realizes the operation of unity-power factor on the grid side, the output voltage is controllable and it can be connected to the DC port.","PeriodicalId":314015,"journal":{"name":"2021 11th International Conference on Power, Energy and Electrical Engineering (CPEEE)","volume":"42 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2021-02-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"133570168","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 : 2021-02-26DOI: 10.1109/CPEEE51686.2021.9383396
Jiageng Ruan, Bin Zhang, Bendong Liu, Shuo Wang
As one of the promising solutions to air pollution and energy crisis caused by the transportation sector, fuel cell hybrid electric vehicles (FC HEVs) attract great attention around the world. Given the under power of the fuel cell to meet the requirements of daily driving, a power supplement system, generally battery, is essential to make up a multi-power hybrid powertrain. In this paper, the power matching strategies are optimized, considering the system cost, energy efficiency, and battery degradation, by particle swarm optimization (PSO) algorithm. Based on the change of the degree of hybridization (DOH), two hybrid systems are proposed, and the corresponding optimal hybridization degrees of the hybrid powertrain are found under four groups of weighting factors. Based on multi-objective optimization, the optimal degrees powertrain hybridization of the hybrid are proposed to extend battery life, improve energy consumption, and reduce powertrain cost according to individual requirements.
{"title":"The Multi-objective Optimization of Cost, Energy Consumption and Battery Degradation for Fuel Cell-Battery Hybrid Electric Vehicle","authors":"Jiageng Ruan, Bin Zhang, Bendong Liu, Shuo Wang","doi":"10.1109/CPEEE51686.2021.9383396","DOIUrl":"https://doi.org/10.1109/CPEEE51686.2021.9383396","url":null,"abstract":"As one of the promising solutions to air pollution and energy crisis caused by the transportation sector, fuel cell hybrid electric vehicles (FC HEVs) attract great attention around the world. Given the under power of the fuel cell to meet the requirements of daily driving, a power supplement system, generally battery, is essential to make up a multi-power hybrid powertrain. In this paper, the power matching strategies are optimized, considering the system cost, energy efficiency, and battery degradation, by particle swarm optimization (PSO) algorithm. Based on the change of the degree of hybridization (DOH), two hybrid systems are proposed, and the corresponding optimal hybridization degrees of the hybrid powertrain are found under four groups of weighting factors. Based on multi-objective optimization, the optimal degrees powertrain hybridization of the hybrid are proposed to extend battery life, improve energy consumption, and reduce powertrain cost according to individual requirements.","PeriodicalId":314015,"journal":{"name":"2021 11th International Conference on Power, Energy and Electrical Engineering (CPEEE)","volume":"63 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2021-02-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"122993425","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 : 2021-02-26DOI: 10.1109/CPEEE51686.2021.9383365
Yanfei Yang, Qi Wang, Zhenxing Liu
Because of buried underground cable, long service time and unreasonable load, it is easy to lead to insulation deterioration and accidents. Therefore, by accurately grasping the law of the influence of external factors on the temperature distribution of the cable, it is possible to rationally design the layout, backfill plan, and rationally distribute the load. This paper combines the knowledge of heat transfer and uses finite element software to study the temperature distribution of buried power cables. The finite element model built analyzes the spatial geometric parameters of underground cable laying, thermal backfill with different thermal conductivity, and different current load pairs. The influence of the temperature field of the underground cable can be seen more intuitively through the temperature cloud chart. The research results show that proper spatial geometric parameters and thermal backfill are not only beneficial to reduce conductor temperature, reduce safety hazards, and save a certain amount of cost, but are also of great significance to the full utilization of cable transmission capacity.
{"title":"Simulation of Underground Cable Temperature Distribution Based on Multiphysics Modeling","authors":"Yanfei Yang, Qi Wang, Zhenxing Liu","doi":"10.1109/CPEEE51686.2021.9383365","DOIUrl":"https://doi.org/10.1109/CPEEE51686.2021.9383365","url":null,"abstract":"Because of buried underground cable, long service time and unreasonable load, it is easy to lead to insulation deterioration and accidents. Therefore, by accurately grasping the law of the influence of external factors on the temperature distribution of the cable, it is possible to rationally design the layout, backfill plan, and rationally distribute the load. This paper combines the knowledge of heat transfer and uses finite element software to study the temperature distribution of buried power cables. The finite element model built analyzes the spatial geometric parameters of underground cable laying, thermal backfill with different thermal conductivity, and different current load pairs. The influence of the temperature field of the underground cable can be seen more intuitively through the temperature cloud chart. The research results show that proper spatial geometric parameters and thermal backfill are not only beneficial to reduce conductor temperature, reduce safety hazards, and save a certain amount of cost, but are also of great significance to the full utilization of cable transmission capacity.","PeriodicalId":314015,"journal":{"name":"2021 11th International Conference on Power, Energy and Electrical Engineering (CPEEE)","volume":"30 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2021-02-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"123351408","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 : 2021-02-26DOI: 10.1109/CPEEE51686.2021.9383339
Yuping Zheng, Xuefei Li, Chonghao Wu, Shuyan Pan, F. Long, Huaidong Lu
The gas in the transformer Buchholz relay was caused by the faults operating inside the transformer such as electrical and thermal faults. In order to further use the gas accumulated in the Buchholz relay to determine the fault type in the transformer, this paper conducts lots of experiments based on the corona discharge model in oil, studies the pulse signal change characteristic of the corona discharge in the oil, and analyzes the change characteristic of free gas generated during the development process of the discharge. The experimental results show that the corona discharge type fault in the oil takes 4 hour and 40 minutes to develop to breakdown under a constant voltage of 20kV. There is no free gas generated during most of the experiment process, and it will only appear when the discharge is defined as disruptive discharge. Then a large amount of gas is produced and part of it becomes free gas, which combustible gas component is mainly H2, C2H2, CH4 and CO. At that time, the pulse repetition frequency reaches the magnitude of 0.4C/s, which is a serious fault. This data can be used as an improvement basis for the existing gas protection.
{"title":"Corona Discharge Characteristics and Free Gas Generation Law in Insulating Oil","authors":"Yuping Zheng, Xuefei Li, Chonghao Wu, Shuyan Pan, F. Long, Huaidong Lu","doi":"10.1109/CPEEE51686.2021.9383339","DOIUrl":"https://doi.org/10.1109/CPEEE51686.2021.9383339","url":null,"abstract":"The gas in the transformer Buchholz relay was caused by the faults operating inside the transformer such as electrical and thermal faults. In order to further use the gas accumulated in the Buchholz relay to determine the fault type in the transformer, this paper conducts lots of experiments based on the corona discharge model in oil, studies the pulse signal change characteristic of the corona discharge in the oil, and analyzes the change characteristic of free gas generated during the development process of the discharge. The experimental results show that the corona discharge type fault in the oil takes 4 hour and 40 minutes to develop to breakdown under a constant voltage of 20kV. There is no free gas generated during most of the experiment process, and it will only appear when the discharge is defined as disruptive discharge. Then a large amount of gas is produced and part of it becomes free gas, which combustible gas component is mainly H2, C2H2, CH4 and CO. At that time, the pulse repetition frequency reaches the magnitude of 0.4C/s, which is a serious fault. This data can be used as an improvement basis for the existing gas protection.","PeriodicalId":314015,"journal":{"name":"2021 11th International Conference on Power, Energy and Electrical Engineering (CPEEE)","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2021-02-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"129617079","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 : 2021-02-26DOI: 10.1109/CPEEE51686.2021.9383405
S. Triyono, E. Suprianto
Electricity power demand has continuously decreased since the beginning of COVID-19 pandemic. In Indonesia, some coal-fired power plants have been put in reserve shutdown. Plant’s competitiveness can be improved with lowering the production cost. This can be done with reducing the purchasing expenses by using cheaper lower rank coal (LRC) at different heating values. In this study, investigation is conducted to identify the operation and maintenance effects when using LRC, especially related to the plant safety and reliability, on the existing coal power plants. It is found that burning very low coal heating value, some components facilities need to increase their load until greater than its rated capacity in order to keep the maximum rated output capacity from the plants. Other effects of increased coal load are reduced boiler combustion efficiency, decreased mill temperature and increased secondary superheater temperature. These effects will lead to potential boiler failure due to the risks of increased local hotspot and erosion of the tubes. In this study, the validation method during combustion is presented to avoid these problems. This paper reported a successful study of burning a lower coal heating value of 4600 kCal/kg (ar), on 'Plant S' with 3400 MW installed capacity. More than IDR 1.5 B have been saved by replacing the original coal of typical 5000 kcal/kg (ar) with LRC, equivalent to around 1.8 TWh power generation, during June 2020. The success of this coal switching operation can be applied in other coal-fired power plants in Java-Bali grid, to obtain a better electricity production cost. Further longer period investigation is being carried out to minimize negative impact and avoiding failure during continuous operation of LRC.
{"title":"Effect of Using Low Range Calory Coal on Electricity Production Cost and Power Plant Life","authors":"S. Triyono, E. Suprianto","doi":"10.1109/CPEEE51686.2021.9383405","DOIUrl":"https://doi.org/10.1109/CPEEE51686.2021.9383405","url":null,"abstract":"Electricity power demand has continuously decreased since the beginning of COVID-19 pandemic. In Indonesia, some coal-fired power plants have been put in reserve shutdown. Plant’s competitiveness can be improved with lowering the production cost. This can be done with reducing the purchasing expenses by using cheaper lower rank coal (LRC) at different heating values. In this study, investigation is conducted to identify the operation and maintenance effects when using LRC, especially related to the plant safety and reliability, on the existing coal power plants. It is found that burning very low coal heating value, some components facilities need to increase their load until greater than its rated capacity in order to keep the maximum rated output capacity from the plants. Other effects of increased coal load are reduced boiler combustion efficiency, decreased mill temperature and increased secondary superheater temperature. These effects will lead to potential boiler failure due to the risks of increased local hotspot and erosion of the tubes. In this study, the validation method during combustion is presented to avoid these problems. This paper reported a successful study of burning a lower coal heating value of 4600 kCal/kg (ar), on 'Plant S' with 3400 MW installed capacity. More than IDR 1.5 B have been saved by replacing the original coal of typical 5000 kcal/kg (ar) with LRC, equivalent to around 1.8 TWh power generation, during June 2020. The success of this coal switching operation can be applied in other coal-fired power plants in Java-Bali grid, to obtain a better electricity production cost. Further longer period investigation is being carried out to minimize negative impact and avoiding failure during continuous operation of LRC.","PeriodicalId":314015,"journal":{"name":"2021 11th International Conference on Power, Energy and Electrical Engineering (CPEEE)","volume":"60 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2021-02-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"128370657","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 : 2021-02-26DOI: 10.1109/CPEEE51686.2021.9383378
Waratta Authayarat, E. Sutheerasak, W. Pirompugd, S. Sanitjai
The research aims to investigate the engine performance and the cost of energy usage from using producer gas (PG) comparing with gasohol 91 (G91), as operated with the spark ignition engine generators at different compression ratio (CR). PG was generated from wood pellet by a small downdraft gasifier, and CR was increased from 8.6 to 9.0. Results found that the maximum engine speed was at 2,128 rpm. At the maximum load, the use of higher CR as using PG showing that the electrical power was added by 1.36 kW. The electrical efficiency was increased by 2.21%, and the specific energy consumption was reduced by 20.81% as compared with lower CR. Nevertheless, the use of high CR as using PG had lower engine performance than G91 due to the calorific-value limitation from using PG. Importantly, the analysis of the energy usage cost indicating that the cost of energy usage from using PG was lower than G91 as decreased by 55.42%. Although the engine performance from using PG is lower than G91, it offers cost savings over the use of G91. Therefore, it is an option for future applications.
{"title":"Feasibility Study of Using Producer Gas from Wood Pellet Operated with Spark-ignition Engine Generators in different Compression Ratio","authors":"Waratta Authayarat, E. Sutheerasak, W. Pirompugd, S. Sanitjai","doi":"10.1109/CPEEE51686.2021.9383378","DOIUrl":"https://doi.org/10.1109/CPEEE51686.2021.9383378","url":null,"abstract":"The research aims to investigate the engine performance and the cost of energy usage from using producer gas (PG) comparing with gasohol 91 (G91), as operated with the spark ignition engine generators at different compression ratio (CR). PG was generated from wood pellet by a small downdraft gasifier, and CR was increased from 8.6 to 9.0. Results found that the maximum engine speed was at 2,128 rpm. At the maximum load, the use of higher CR as using PG showing that the electrical power was added by 1.36 kW. The electrical efficiency was increased by 2.21%, and the specific energy consumption was reduced by 20.81% as compared with lower CR. Nevertheless, the use of high CR as using PG had lower engine performance than G91 due to the calorific-value limitation from using PG. Importantly, the analysis of the energy usage cost indicating that the cost of energy usage from using PG was lower than G91 as decreased by 55.42%. Although the engine performance from using PG is lower than G91, it offers cost savings over the use of G91. Therefore, it is an option for future applications.","PeriodicalId":314015,"journal":{"name":"2021 11th International Conference on Power, Energy and Electrical Engineering (CPEEE)","volume":"11 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2021-02-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"129999140","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 : 2021-02-26DOI: 10.1109/CPEEE51686.2021.9383336
Koki Takasu, M. Deng
Wireless power transfer (WPT) system based on magnetic resonance coupling method is expected to be the next generation wireless power transfer system due to excellent transmission characteristics. One of the problems with WPT system is the limited power and low efficiency, which depends on the circuit parameters and the positioning of the coils. In this paper, to control efficiency and power simultaneously by compensating the position between transmission and reception coils and using DC-DC converter is proposed. First, it is explained that efficiency and power can be controlled by coupling ratio manipulation because of coils position control and by impedance conversion using buck converter control. Then, the simultaneous control system is designed and its feasibility is confirmed by simulation.
{"title":"Simultaneous control of efficiency and power in a WPT system using position information between transmission and reception coils","authors":"Koki Takasu, M. Deng","doi":"10.1109/CPEEE51686.2021.9383336","DOIUrl":"https://doi.org/10.1109/CPEEE51686.2021.9383336","url":null,"abstract":"Wireless power transfer (WPT) system based on magnetic resonance coupling method is expected to be the next generation wireless power transfer system due to excellent transmission characteristics. One of the problems with WPT system is the limited power and low efficiency, which depends on the circuit parameters and the positioning of the coils. In this paper, to control efficiency and power simultaneously by compensating the position between transmission and reception coils and using DC-DC converter is proposed. First, it is explained that efficiency and power can be controlled by coupling ratio manipulation because of coils position control and by impedance conversion using buck converter control. Then, the simultaneous control system is designed and its feasibility is confirmed by simulation.","PeriodicalId":314015,"journal":{"name":"2021 11th International Conference on Power, Energy and Electrical Engineering (CPEEE)","volume":"101 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2021-02-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"128208319","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 : 2021-02-26DOI: 10.1109/cpeee51686.2021.9383374
{"title":"CPEEE 2021 Cover Page","authors":"","doi":"10.1109/cpeee51686.2021.9383374","DOIUrl":"https://doi.org/10.1109/cpeee51686.2021.9383374","url":null,"abstract":"","PeriodicalId":314015,"journal":{"name":"2021 11th International Conference on Power, Energy and Electrical Engineering (CPEEE)","volume":"359 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2021-02-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"132164794","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 : 2021-02-26DOI: 10.1109/CPEEE51686.2021.9383349
Kazuhisa Naoi, Mitsuhiro Shiono
Drag-type vertical-axis wind turbines have a large starting torque and excellent self-starting performance, and are non-directional with respect to wind. In addition, because the maximum output occurs at a tip speed ratio of 1 or less, these turbines can be operated in a lower speed range compared with lift-type wind turbines. However, drawback of drag-type wind turbines is that their output is lower per unit sectional area than that of the lift-type wind turbines. Therefore, we have been studying the characteristics of a multi-blade drag-type vertical-axis wind turbine with stationary vanes functioning as wind direction plates. Our experimental results so far have shown that the wind turbine output is increased by using stationary vanes. In this paper, a method for calculating the output power of a multi-blade drag-type vertical-axis wind turbine with stationary vanes based on the characteristics of a single rotor blade was studied and compared with the results of wind turbine characteristics measured in a wind tunnel. In addition, the relationship between the wind incident angle of the rotor blade and the wind turbine output was examined using the proposed method for calculating wind turbine characteristics, assuming that the angle of installation of the stationary vanes are variable.
{"title":"Relationship between Incident Angle of Wind on Rotor Blade and Output of a Drag-type Multi-blade Vertical-Axis Wind Turbine with Stationary Multi-vanes","authors":"Kazuhisa Naoi, Mitsuhiro Shiono","doi":"10.1109/CPEEE51686.2021.9383349","DOIUrl":"https://doi.org/10.1109/CPEEE51686.2021.9383349","url":null,"abstract":"Drag-type vertical-axis wind turbines have a large starting torque and excellent self-starting performance, and are non-directional with respect to wind. In addition, because the maximum output occurs at a tip speed ratio of 1 or less, these turbines can be operated in a lower speed range compared with lift-type wind turbines. However, drawback of drag-type wind turbines is that their output is lower per unit sectional area than that of the lift-type wind turbines. Therefore, we have been studying the characteristics of a multi-blade drag-type vertical-axis wind turbine with stationary vanes functioning as wind direction plates. Our experimental results so far have shown that the wind turbine output is increased by using stationary vanes. In this paper, a method for calculating the output power of a multi-blade drag-type vertical-axis wind turbine with stationary vanes based on the characteristics of a single rotor blade was studied and compared with the results of wind turbine characteristics measured in a wind tunnel. In addition, the relationship between the wind incident angle of the rotor blade and the wind turbine output was examined using the proposed method for calculating wind turbine characteristics, assuming that the angle of installation of the stationary vanes are variable.","PeriodicalId":314015,"journal":{"name":"2021 11th International Conference on Power, Energy and Electrical Engineering (CPEEE)","volume":"48 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2021-02-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"120945134","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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