Pub Date : 2018-10-01DOI: 10.1109/ACEPT.2018.8610765
Pengfeng Lin, Peng Wang, Jianfang Xiao, Chi Jin, Junjun Wang, Koh Leong Hai
Hybrid AC/DC microgrids (MG) offer a promising way to incorporate heterogeneous energy sources into AC or DC subgrids while minimizing energy conversions stages. For a MG working in long term, the capacities of both AC and DC subgrids would inevitably increase, which may result in more power interactions between the two subgrids. In this context, a single bidirectional interlinking converter (BIC) which bridges AC and DC subgrids may suffer from overstress. Hence, multi-paralleled BICs configuration should be adopted and well managed. This paper proposes a dynamic consensus approach for proportional power allocation among multiple BICs, thereby avoiding the overcurrent of a particular BIC and enhancing the flexibility of system communication. The effectiveness of the proposed power management strategy has been verified by simulation results.
{"title":"Power Management of Multi-paralleled Bidirectional Interlinking Converters in Hybrid AC/DC Microgrids: A Dynamic Consensus Approach","authors":"Pengfeng Lin, Peng Wang, Jianfang Xiao, Chi Jin, Junjun Wang, Koh Leong Hai","doi":"10.1109/ACEPT.2018.8610765","DOIUrl":"https://doi.org/10.1109/ACEPT.2018.8610765","url":null,"abstract":"Hybrid AC/DC microgrids (MG) offer a promising way to incorporate heterogeneous energy sources into AC or DC subgrids while minimizing energy conversions stages. For a MG working in long term, the capacities of both AC and DC subgrids would inevitably increase, which may result in more power interactions between the two subgrids. In this context, a single bidirectional interlinking converter (BIC) which bridges AC and DC subgrids may suffer from overstress. Hence, multi-paralleled BICs configuration should be adopted and well managed. This paper proposes a dynamic consensus approach for proportional power allocation among multiple BICs, thereby avoiding the overcurrent of a particular BIC and enhancing the flexibility of system communication. The effectiveness of the proposed power management strategy has been verified by simulation results.","PeriodicalId":296432,"journal":{"name":"2018 Asian Conference on Energy, Power and Transportation Electrification (ACEPT)","volume":"25 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2018-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"125011030","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 : 2018-10-01DOI: 10.1109/ACEPT.2018.8610790
O. Yu, Chih-Shen Yeh, J. Lai
Increasing usage of high output voltage, low output current resonant-based DC-DC converter systems can face a stability issue when cycle-by-cycle drain-source synchronous rectification (SR) controllers are paired with low RDS, on rectifier switches. A current resonance phenomenon can be observed at low power conditions within the LLC resonant converter. This instability can lead to inconsistent SR operation, excessive conduction loss, output ripple, and poor light-load efficiency. In this paper, the issue is root caused, simulated, and an FPGAbased duty cycle rate limiter is built and tested to verify a possible method of alleviating the issue.
{"title":"Synchronous Rectifier Design Considerations for Solid-State Transformer Light-Load Stability","authors":"O. Yu, Chih-Shen Yeh, J. Lai","doi":"10.1109/ACEPT.2018.8610790","DOIUrl":"https://doi.org/10.1109/ACEPT.2018.8610790","url":null,"abstract":"Increasing usage of high output voltage, low output current resonant-based DC-DC converter systems can face a stability issue when cycle-by-cycle drain-source synchronous rectification (SR) controllers are paired with low RDS, on rectifier switches. A current resonance phenomenon can be observed at low power conditions within the LLC resonant converter. This instability can lead to inconsistent SR operation, excessive conduction loss, output ripple, and poor light-load efficiency. In this paper, the issue is root caused, simulated, and an FPGAbased duty cycle rate limiter is built and tested to verify a possible method of alleviating the issue.","PeriodicalId":296432,"journal":{"name":"2018 Asian Conference on Energy, Power and Transportation Electrification (ACEPT)","volume":"86 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2018-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"114882734","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 : 2018-10-01DOI: 10.1109/ACEPT.2018.8610850
S. Venkatachalam, Dhivya Sampath Kumar, Wenjie Zhang, D. Srinivasan, Anurag Sharma
Finding innovative ways of exploiting renewable energy sources to their fullest potential is already being considered as one of the utmost important research activities around the globe. This paper mainly focuses on the feasibility and economic analysis of solar water pumping systems in a remote village in India. Also, comparison of the same with conventional diesel-powered systems is carried out to study the pros and cons of both the systems. It is found from the analysis that the deployment of solar water pumping systems in an agriculture dependent nation like India has an upper hand in many aspects such as minimal environmental impacts, reduction of fossil fuel consumption, better profit margin etc. However, solar water pumping systems are still not treated as a viable option mainly because of the high upfront cost needed for the solar panels and pump. However, this can be easily negated via enhanced financial support schemes and incentives from the government. Considering all these factors, it is pertinent to deploy more of such projects on a larger scale all over the nation.
{"title":"Feasibility And Economic Analysis of Solar Energy Systems for Rural Area Applications","authors":"S. Venkatachalam, Dhivya Sampath Kumar, Wenjie Zhang, D. Srinivasan, Anurag Sharma","doi":"10.1109/ACEPT.2018.8610850","DOIUrl":"https://doi.org/10.1109/ACEPT.2018.8610850","url":null,"abstract":"Finding innovative ways of exploiting renewable energy sources to their fullest potential is already being considered as one of the utmost important research activities around the globe. This paper mainly focuses on the feasibility and economic analysis of solar water pumping systems in a remote village in India. Also, comparison of the same with conventional diesel-powered systems is carried out to study the pros and cons of both the systems. It is found from the analysis that the deployment of solar water pumping systems in an agriculture dependent nation like India has an upper hand in many aspects such as minimal environmental impacts, reduction of fossil fuel consumption, better profit margin etc. However, solar water pumping systems are still not treated as a viable option mainly because of the high upfront cost needed for the solar panels and pump. However, this can be easily negated via enhanced financial support schemes and incentives from the government. Considering all these factors, it is pertinent to deploy more of such projects on a larger scale all over the nation.","PeriodicalId":296432,"journal":{"name":"2018 Asian Conference on Energy, Power and Transportation Electrification (ACEPT)","volume":"47 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2018-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"124777178","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 : 2018-10-01DOI: 10.1109/ACEPT.2018.8610778
Chih-Shen Yeh, J. Lai
High switching frequency (HF) operation of solid-state transformers (SSTs) reduces the weight and volume of magnetic parts. Yet in medium-voltage (MV) SSTs, electrical insulation becomes a great concern and demands extra spacing. To resolve the issue, resistive shielding technique is considered in this paper to mitigate the threat of partial discharge. In addition, geometric shaping is applied to alleviate local electrical field. On top of the insulation and size requirements, HF transformer design should also consider skin effect and other effects induced by ac electromagnetic field. This paper is meant to develop a planar transformer for a MV SST, taking all critical factors into account. 2-d finite element analysis is adopted as main research and conceptual verification method.
{"title":"A Study on High Frequency Transformer Design in Medium-voltage Solid-state Transformers","authors":"Chih-Shen Yeh, J. Lai","doi":"10.1109/ACEPT.2018.8610778","DOIUrl":"https://doi.org/10.1109/ACEPT.2018.8610778","url":null,"abstract":"High switching frequency (HF) operation of solid-state transformers (SSTs) reduces the weight and volume of magnetic parts. Yet in medium-voltage (MV) SSTs, electrical insulation becomes a great concern and demands extra spacing. To resolve the issue, resistive shielding technique is considered in this paper to mitigate the threat of partial discharge. In addition, geometric shaping is applied to alleviate local electrical field. On top of the insulation and size requirements, HF transformer design should also consider skin effect and other effects induced by ac electromagnetic field. This paper is meant to develop a planar transformer for a MV SST, taking all critical factors into account. 2-d finite element analysis is adopted as main research and conceptual verification method.","PeriodicalId":296432,"journal":{"name":"2018 Asian Conference on Energy, Power and Transportation Electrification (ACEPT)","volume":"36 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2018-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"114624342","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 : 2018-10-01DOI: 10.1109/ACEPT.2018.8610826
Sang-Hyuk Kim, Heung-Geun Kim, Honnyong Cha
In dc microgrid, a bipolar dc bus configuration has more merits than an unipolar one, due to higher reliability, easy grounding, and having more voltage levels. However, tight voltage balancing control is necessary to handle unbalanced power between positive and negative buses. To solve this issue effectively, this paper proposes a new voltage balancer with dc-dc converter function. The proposed balancer can serve as both a voltage balancer and a bidirectional dc-dc converter. Thus, it can be applied to battery management system or fast charger in electric vehicles (EVs) charging station while balancing the bipolar dc bus voltages. Unlike the conventional voltage balancing control using a three-level dc-dc converter, the voltage balancing range of the proposed system is not limited. To confirm this superiority, a comparison of the voltage balancing range between the proposed and conventional scheme is explored. Simulation and experimental results are provided in order to validate the effectiveness of the proposed system.
{"title":"A New Voltage Balancer With DC-DC Converter Function","authors":"Sang-Hyuk Kim, Heung-Geun Kim, Honnyong Cha","doi":"10.1109/ACEPT.2018.8610826","DOIUrl":"https://doi.org/10.1109/ACEPT.2018.8610826","url":null,"abstract":"In dc microgrid, a bipolar dc bus configuration has more merits than an unipolar one, due to higher reliability, easy grounding, and having more voltage levels. However, tight voltage balancing control is necessary to handle unbalanced power between positive and negative buses. To solve this issue effectively, this paper proposes a new voltage balancer with dc-dc converter function. The proposed balancer can serve as both a voltage balancer and a bidirectional dc-dc converter. Thus, it can be applied to battery management system or fast charger in electric vehicles (EVs) charging station while balancing the bipolar dc bus voltages. Unlike the conventional voltage balancing control using a three-level dc-dc converter, the voltage balancing range of the proposed system is not limited. To confirm this superiority, a comparison of the voltage balancing range between the proposed and conventional scheme is explored. Simulation and experimental results are provided in order to validate the effectiveness of the proposed system.","PeriodicalId":296432,"journal":{"name":"2018 Asian Conference on Energy, Power and Transportation Electrification (ACEPT)","volume":"24 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2018-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"134119791","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 : 2018-10-01DOI: 10.1109/ACEPT.2018.8610662
Irfan SyarifArief, D. R. Aldara
Indonesia faces a decreasing in fossil energy reserves about 3% every year and has not been matched by the discovery of new energy reserves. Therefore, it is necessary to increase the use of renewable Energy to meet energy needs. Renewable energy is energy derived from sustainable natural processes. Indonesia located in the tropical area, it has a lot of potential ocean energy. OTEC (Ocean Thermal Energy Conversion) is one of many renewable energy sources from the ocean. OTEC or Ocean Thermal Energy Conversion is one of the latest technologies that used the temperature difference between deep and shallow seawater. OTEC system generally used ammonia (NH3) as working fluid. Ammonia is used because it has a relatively low boiling point compared to water. OTEC system consists of evaporators, turbines, generators, condensers, and pumps. This research, the authors focused on the design of lab-scale OTEC turbines. 2 stage turbine will be varied the tilt which is 0, 5, 10, 15, 20, 25, 30, 35, 40, 45, 50 degree. The computational fluid dynamics (CFD) method is used in this research to simulate the OTEC Turbine. Based on the simulation results, the highest efficiency and net power is a 2 stage 40 degree turbine with 57.45% of efficiency and 287.25 kW of generated power.
{"title":"Preliminary Design of Ocean Thermal Energy Conversion (OTEC) Axial Turbine for Laboratory Scale","authors":"Irfan SyarifArief, D. R. Aldara","doi":"10.1109/ACEPT.2018.8610662","DOIUrl":"https://doi.org/10.1109/ACEPT.2018.8610662","url":null,"abstract":"Indonesia faces a decreasing in fossil energy reserves about 3% every year and has not been matched by the discovery of new energy reserves. Therefore, it is necessary to increase the use of renewable Energy to meet energy needs. Renewable energy is energy derived from sustainable natural processes. Indonesia located in the tropical area, it has a lot of potential ocean energy. OTEC (Ocean Thermal Energy Conversion) is one of many renewable energy sources from the ocean. OTEC or Ocean Thermal Energy Conversion is one of the latest technologies that used the temperature difference between deep and shallow seawater. OTEC system generally used ammonia (NH3) as working fluid. Ammonia is used because it has a relatively low boiling point compared to water. OTEC system consists of evaporators, turbines, generators, condensers, and pumps. This research, the authors focused on the design of lab-scale OTEC turbines. 2 stage turbine will be varied the tilt which is 0, 5, 10, 15, 20, 25, 30, 35, 40, 45, 50 degree. The computational fluid dynamics (CFD) method is used in this research to simulate the OTEC Turbine. Based on the simulation results, the highest efficiency and net power is a 2 stage 40 degree turbine with 57.45% of efficiency and 287.25 kW of generated power.","PeriodicalId":296432,"journal":{"name":"2018 Asian Conference on Energy, Power and Transportation Electrification (ACEPT)","volume":"38 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2018-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"134348852","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 : 2018-10-01DOI: 10.1109/ACEPT.2018.8610801
Xin Zhang, Huanyue Liao
This paper proposes a series-connected adaptive stabilizer (SAS) to fix the instability problem between the grid-connected inverter (GCI) and the weak grid via shaping the grid impedance. Different from the traditional stabilization method, the SAS does not need to know the information about the GCI, therefore, it can be treated as a module stabilization method. In addition, since the SAS is in series with the GCI and the grid impedance, it only goes through very small power. Moreover, the SAS is realized by a very simple adaptive current controller without any additional phase locked loop (PLL) and hence, is very easy to be implemented in the real world. Besides, the SAS also can match different GCIs automatically. Finally, an LCL type GCI is tested to verify the correctness of the proposed SAS.
{"title":"Series-Connected Adaptive Stabilizer for the Grid Connected Inverter at Weak Grid","authors":"Xin Zhang, Huanyue Liao","doi":"10.1109/ACEPT.2018.8610801","DOIUrl":"https://doi.org/10.1109/ACEPT.2018.8610801","url":null,"abstract":"This paper proposes a series-connected adaptive stabilizer (SAS) to fix the instability problem between the grid-connected inverter (GCI) and the weak grid via shaping the grid impedance. Different from the traditional stabilization method, the SAS does not need to know the information about the GCI, therefore, it can be treated as a module stabilization method. In addition, since the SAS is in series with the GCI and the grid impedance, it only goes through very small power. Moreover, the SAS is realized by a very simple adaptive current controller without any additional phase locked loop (PLL) and hence, is very easy to be implemented in the real world. Besides, the SAS also can match different GCIs automatically. Finally, an LCL type GCI is tested to verify the correctness of the proposed SAS.","PeriodicalId":296432,"journal":{"name":"2018 Asian Conference on Energy, Power and Transportation Electrification (ACEPT)","volume":"25 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2018-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"117130832","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 : 2018-10-01DOI: 10.1109/ACEPT.2018.8610689
Wei Chen, Nanjing Liu, Zhilong Zou, Donghui Luo, T. Yuan, P. Sun
The grounding grid is an important part of the power system. A good grounding grid status is related to the stable operation of the power system. Therefore, when a corrosion problem occurs in the grounding grid, the grounding resistance will increase, and the discharge of electrical energy will become unsmooth. This may lead to spark discharge between devices. What’s worse, it may lead to device damage, resulting in a large area. Finally, it may affect the safe and stable operation of the power system. In grounding grid corrosion diagnosis, fault parameter identification method is one of the commonly used methods. By measuring the port resistance and performing inverse calculation to obtain the branch resistance change value, it also be-longs to fault parameter identification method. When measuring port resistance for ground grid corrosion diagnosis, since the digital DC bridge wire is not long enough, auxiliary wires need to be added between the digital DC bridge wire port and the down conductor steel. The contact resistance between the auxiliary wire and the down conductor steel will greatly affect the measured value of the port resistance, resulting in inaccurate inversion of the ground grid branch resistance. Therefore, in this paper, the influence of contact resistance on the corrosion diagnosis of grounding grid is studied by taking the grounding grid of the oil storage area as an example. The influence of the contact resistance on the inverse calculation is analyzed. The suppression method of the influence of the contact resistance in the corrosion diagnosis is also put forward and verified by the field test.
{"title":"Analysis of Contact Resistance in Fault Parameter Identification Method and Its Suppression Methods","authors":"Wei Chen, Nanjing Liu, Zhilong Zou, Donghui Luo, T. Yuan, P. Sun","doi":"10.1109/ACEPT.2018.8610689","DOIUrl":"https://doi.org/10.1109/ACEPT.2018.8610689","url":null,"abstract":"The grounding grid is an important part of the power system. A good grounding grid status is related to the stable operation of the power system. Therefore, when a corrosion problem occurs in the grounding grid, the grounding resistance will increase, and the discharge of electrical energy will become unsmooth. This may lead to spark discharge between devices. What’s worse, it may lead to device damage, resulting in a large area. Finally, it may affect the safe and stable operation of the power system. In grounding grid corrosion diagnosis, fault parameter identification method is one of the commonly used methods. By measuring the port resistance and performing inverse calculation to obtain the branch resistance change value, it also be-longs to fault parameter identification method. When measuring port resistance for ground grid corrosion diagnosis, since the digital DC bridge wire is not long enough, auxiliary wires need to be added between the digital DC bridge wire port and the down conductor steel. The contact resistance between the auxiliary wire and the down conductor steel will greatly affect the measured value of the port resistance, resulting in inaccurate inversion of the ground grid branch resistance. Therefore, in this paper, the influence of contact resistance on the corrosion diagnosis of grounding grid is studied by taking the grounding grid of the oil storage area as an example. The influence of the contact resistance on the inverse calculation is analyzed. The suppression method of the influence of the contact resistance in the corrosion diagnosis is also put forward and verified by the field test.","PeriodicalId":296432,"journal":{"name":"2018 Asian Conference on Energy, Power and Transportation Electrification (ACEPT)","volume":"152 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2018-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"123319967","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 : 2018-10-01DOI: 10.1109/ACEPT.2018.8610771
Wesley Poh Qi Tong, B. M. Muhammad Ramadan, T. Logenthiran
This paper presents a comparative analysis between two DC-AC converter topologies known as the z-source inverter (ZSI) and quasi-z-source inverter (Q-ZSI). In terms of functionality, the Q-ZSI operates similarly to the ZSI, whereby it is able to realize buck-boost inversion and power conditioning in a single stage with improved reliability. Additionally, the Q-ZSI shares the same pulse-width modulation (PWM) shoot-through methods with the ZSI for boost control. Although both topologies consist of many similar traits, it is discovered that there are inherent differences in their transient output characteristics. Using PSCAD/EMTDC simulation environment, experiments are performed on the ZSI and Q-ZSI in order to analyze their transient responses at different boost factors. This includes the characteristics of inrush current and ripple. The acquired simulation results have exhibited several unique merits of the Q-ZSI when compared to the ZSI during boost operation.
{"title":"A Comparative Analysis between Z-Source and Quasi-Z-Source Inverters for Boost Operation","authors":"Wesley Poh Qi Tong, B. M. Muhammad Ramadan, T. Logenthiran","doi":"10.1109/ACEPT.2018.8610771","DOIUrl":"https://doi.org/10.1109/ACEPT.2018.8610771","url":null,"abstract":"This paper presents a comparative analysis between two DC-AC converter topologies known as the z-source inverter (ZSI) and quasi-z-source inverter (Q-ZSI). In terms of functionality, the Q-ZSI operates similarly to the ZSI, whereby it is able to realize buck-boost inversion and power conditioning in a single stage with improved reliability. Additionally, the Q-ZSI shares the same pulse-width modulation (PWM) shoot-through methods with the ZSI for boost control. Although both topologies consist of many similar traits, it is discovered that there are inherent differences in their transient output characteristics. Using PSCAD/EMTDC simulation environment, experiments are performed on the ZSI and Q-ZSI in order to analyze their transient responses at different boost factors. This includes the characteristics of inrush current and ripple. The acquired simulation results have exhibited several unique merits of the Q-ZSI when compared to the ZSI during boost operation.","PeriodicalId":296432,"journal":{"name":"2018 Asian Conference on Energy, Power and Transportation Electrification (ACEPT)","volume":"14 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2018-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"125186193","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 : 2018-10-01DOI: 10.1109/ACEPT.2018.8610758
Lei Chen, Guocheng Li, Hongkun Chen, L. Koh
Concerning the integration of renewable energy in the power grid, some key technical issues should be given enough attention, such as the capability of fault ride through (FRT) and the smoothness of output power. In this paper, the combined use of a resistive-type superconducting fault current Iimiter (SFCL) and a superconducting magnetic energy storage (SMES) is proposed, and it is expected to improve the transient performance of a permanent magnet synchronous generator (PMSG) based wind turbine system under fault conditions. The SFCL is installed near the line side converter (LSC) of the wind turbine system, and its functions are to suppress the fault current and compensate the terminal voltage. The SMES is coupled to the wind turbine system’s DC-link, and it aims to alleviate the power difference between the generator side converter (GSC) and the LSC. Thus, the output power can be smoothed, and the DC-link overvoltage will be mitigated. Related theoretical modelling analysis is conducted, and further a detailed simulation model of 1.5 MW PMSG-based wind turbine integrated with the SFCL-SMES is built in MATLAB/SIMULINK. The simulations are performed to check the effects of the SFCL-SMES on handling the three-phase short-circuit. From the simulation results, the effectiveness of the proposed approach on augmenting the FRT capability and smoothing the power fluctuation of the PMSG can be well confirmed.
{"title":"Combined Use of SFCL and SMES for Augmenting FRT Performance and Smoothing Output Power of PMSG Based Wind Turbine","authors":"Lei Chen, Guocheng Li, Hongkun Chen, L. Koh","doi":"10.1109/ACEPT.2018.8610758","DOIUrl":"https://doi.org/10.1109/ACEPT.2018.8610758","url":null,"abstract":"Concerning the integration of renewable energy in the power grid, some key technical issues should be given enough attention, such as the capability of fault ride through (FRT) and the smoothness of output power. In this paper, the combined use of a resistive-type superconducting fault current Iimiter (SFCL) and a superconducting magnetic energy storage (SMES) is proposed, and it is expected to improve the transient performance of a permanent magnet synchronous generator (PMSG) based wind turbine system under fault conditions. The SFCL is installed near the line side converter (LSC) of the wind turbine system, and its functions are to suppress the fault current and compensate the terminal voltage. The SMES is coupled to the wind turbine system’s DC-link, and it aims to alleviate the power difference between the generator side converter (GSC) and the LSC. Thus, the output power can be smoothed, and the DC-link overvoltage will be mitigated. Related theoretical modelling analysis is conducted, and further a detailed simulation model of 1.5 MW PMSG-based wind turbine integrated with the SFCL-SMES is built in MATLAB/SIMULINK. The simulations are performed to check the effects of the SFCL-SMES on handling the three-phase short-circuit. From the simulation results, the effectiveness of the proposed approach on augmenting the FRT capability and smoothing the power fluctuation of the PMSG can be well confirmed.","PeriodicalId":296432,"journal":{"name":"2018 Asian Conference on Energy, Power and Transportation Electrification (ACEPT)","volume":"32 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2018-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"127776044","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}
京公网安备 11010802042870号
京ICP备2023020795号-1
扫码关注我们
求助内容：
应助结果提醒方式：