Pub Date : 2015-10-29DOI: 10.1109/ECCE.2015.7310013
Zian Qin, Yi Tang, P. Loh, F. Blaabjerg
This paper presents the benchmark study of ac and dc active power decoupling circuits for second-order harmonic mitigation in kW-scale single-phase inverters. First of all, the best solutions of active power decoupling to achieve high efficiency and power density are identified and comprehensively studied, where the commercially available film capacitors, circuit topologies, and control strategies for active power decoupling are all taken into account. Then, an adaptive decoupling voltage control method is proposed to further improve the performance of dc decoupling in terms of efficiency and reliability. The feasibility and superiority of the identified solution for active power decoupling together with the proposed adaptive decoupling voltage control method are finally verified by both the experimental results obtained on a 2 kW single-phase inverter.
{"title":"Benchmark of AC and DC active power decoupling circuits for second-order harmonic mitigation in kW-scale single-phase inverters","authors":"Zian Qin, Yi Tang, P. Loh, F. Blaabjerg","doi":"10.1109/ECCE.2015.7310013","DOIUrl":"https://doi.org/10.1109/ECCE.2015.7310013","url":null,"abstract":"This paper presents the benchmark study of ac and dc active power decoupling circuits for second-order harmonic mitigation in kW-scale single-phase inverters. First of all, the best solutions of active power decoupling to achieve high efficiency and power density are identified and comprehensively studied, where the commercially available film capacitors, circuit topologies, and control strategies for active power decoupling are all taken into account. Then, an adaptive decoupling voltage control method is proposed to further improve the performance of dc decoupling in terms of efficiency and reliability. The feasibility and superiority of the identified solution for active power decoupling together with the proposed adaptive decoupling voltage control method are finally verified by both the experimental results obtained on a 2 kW single-phase inverter.","PeriodicalId":6654,"journal":{"name":"2015 IEEE Energy Conversion Congress and Exposition (ECCE)","volume":"142 1","pages":"2514-2521"},"PeriodicalIF":0.0,"publicationDate":"2015-10-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"80179073","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 : 2015-10-29DOI: 10.1109/ECCE.2015.7310395
A. Tan-Kim, V. Lanfranchi, S. Vivier, J. Legranger, F. Palleschi
This study aims at minimizing the acoustic noise from a magnetic origin of a claw-pole alternator. This optimization is carried out through a multiphysic simulation which includes the computation of magnetic forces, vibrations and the resulting noise. Therefore, a mechanical model of the alternator has to be developed to determine its main modes. Predicted modal parameters are checked against experimental results. Based on this model, the sound power level is simulated and compared with measurements. Finally, the rotor shape is optimized and a significant reduction of the noise level is found by simulation.
{"title":"Vibro-acoustic simulation and optimization of a claw-pole alternator","authors":"A. Tan-Kim, V. Lanfranchi, S. Vivier, J. Legranger, F. Palleschi","doi":"10.1109/ECCE.2015.7310395","DOIUrl":"https://doi.org/10.1109/ECCE.2015.7310395","url":null,"abstract":"This study aims at minimizing the acoustic noise from a magnetic origin of a claw-pole alternator. This optimization is carried out through a multiphysic simulation which includes the computation of magnetic forces, vibrations and the resulting noise. Therefore, a mechanical model of the alternator has to be developed to determine its main modes. Predicted modal parameters are checked against experimental results. Based on this model, the sound power level is simulated and compared with measurements. Finally, the rotor shape is optimized and a significant reduction of the noise level is found by simulation.","PeriodicalId":6654,"journal":{"name":"2015 IEEE Energy Conversion Congress and Exposition (ECCE)","volume":"145 1","pages":"5227-5232"},"PeriodicalIF":0.0,"publicationDate":"2015-10-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"81574696","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 : 2015-10-29DOI: 10.1109/ECCE.2015.7310163
Jie Shen, Qin Lei, S. Schroder, Marius Mechlinski
The capacitor voltage drift problem in Modular Multilevel Converter (MMC) system has been widely discussed in the past. It is well known that sometimes the capacitor voltages are balanced, without any active controls. However, due to the uncertainty and lack of theoretical explanations, active capacitor voltage controls are typically preferred for real applications, and the voltage balancing/drift mechanism of MMC topology did not draw much attention in the past. This paper covers this gap: it is explored that the cell voltage drift effect is caused by the sideband overlap effect. Moreover, the requirements of voltage drift effect are discussed systematically. The conclusion is that for high-power applications with limited switching frequencies, low but non-integer carrier ratios are highly preferred to avoid the intrinsic voltage drift between MMC cells. By doing this, active voltage balancing algorithms are only needed as backup.
{"title":"Voltage drift mechanism in modular multilevel converter","authors":"Jie Shen, Qin Lei, S. Schroder, Marius Mechlinski","doi":"10.1109/ECCE.2015.7310163","DOIUrl":"https://doi.org/10.1109/ECCE.2015.7310163","url":null,"abstract":"The capacitor voltage drift problem in Modular Multilevel Converter (MMC) system has been widely discussed in the past. It is well known that sometimes the capacitor voltages are balanced, without any active controls. However, due to the uncertainty and lack of theoretical explanations, active capacitor voltage controls are typically preferred for real applications, and the voltage balancing/drift mechanism of MMC topology did not draw much attention in the past. This paper covers this gap: it is explored that the cell voltage drift effect is caused by the sideband overlap effect. Moreover, the requirements of voltage drift effect are discussed systematically. The conclusion is that for high-power applications with limited switching frequencies, low but non-integer carrier ratios are highly preferred to avoid the intrinsic voltage drift between MMC cells. By doing this, active voltage balancing algorithms are only needed as backup.","PeriodicalId":6654,"journal":{"name":"2015 IEEE Energy Conversion Congress and Exposition (ECCE)","volume":"16 1","pages":"3557-3563"},"PeriodicalIF":0.0,"publicationDate":"2015-10-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"84373022","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}
Photovoltaic (PV) units in DC microgrids (MGs) usually have two operating modes including constant voltage control (CVC) mode and maximum power point tracking (MPPT) mode. When the operating mode of PV units switches between CVC and MPPT, unexpected transient problems of output voltage and current may occur. Droop control applied in DC-MGs can achieve load current sharing at the time when more than two voltage-source units are connected in parallel. This paper puts forward a seamless switching control strategy of PV units in DC-MGs based on droop control. The proposed control strategy consists of voltage-current inner loops, droop control loop, and MPPT module. In this paper, conventional control strategy of PV units in DC-MGs is introduced firstly, and then the droop characteristics of voltage-shifting are analyzed. A basic DC-MG system made up of PV unit, DC load and AC grid interface inverter is set up to validate the proposed control strategy. The MPPT performance of proposed control strategy is tested. Experimental results show that compared with the conventional control strategy, better transient characteristic is achieved by using the proposed seamless switching control strategy.
{"title":"A seamless switching control strategy of photovoltaic units in droop-controlled DC microgrids","authors":"Panbao Wang, Xu Yang, Wei Wang, Guihua Liu, Dianguo Xu","doi":"10.1109/ECCE.2015.7310530","DOIUrl":"https://doi.org/10.1109/ECCE.2015.7310530","url":null,"abstract":"Photovoltaic (PV) units in DC microgrids (MGs) usually have two operating modes including constant voltage control (CVC) mode and maximum power point tracking (MPPT) mode. When the operating mode of PV units switches between CVC and MPPT, unexpected transient problems of output voltage and current may occur. Droop control applied in DC-MGs can achieve load current sharing at the time when more than two voltage-source units are connected in parallel. This paper puts forward a seamless switching control strategy of PV units in DC-MGs based on droop control. The proposed control strategy consists of voltage-current inner loops, droop control loop, and MPPT module. In this paper, conventional control strategy of PV units in DC-MGs is introduced firstly, and then the droop characteristics of voltage-shifting are analyzed. A basic DC-MG system made up of PV unit, DC load and AC grid interface inverter is set up to validate the proposed control strategy. The MPPT performance of proposed control strategy is tested. Experimental results show that compared with the conventional control strategy, better transient characteristic is achieved by using the proposed seamless switching control strategy.","PeriodicalId":6654,"journal":{"name":"2015 IEEE Energy Conversion Congress and Exposition (ECCE)","volume":"11 1","pages":"6206-6211"},"PeriodicalIF":0.0,"publicationDate":"2015-10-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"84378902","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 : 2015-10-29DOI: 10.1109/ECCE.2015.7310417
Sayan Acharya, Ali Azidehak, K. Vechalapu, M. Kashani, G. Chavan, S. Bhattacharya, N. Yousefpoor
Recently, multi-terminal DC (MTDC) system has received more attention in the power transmission areas. Development of modular structured power converter topologies has now enabled the power converter technology to attain high voltage high power ratings. Compared to current source converter technology, voltage source converters have several benefits including higher power quality, independent control of active and reactive power etc. This paper focuses on a unique MTDC system consisting of terminals with different converter topologies especially considering the fact that each of the terminals may be manufactured by different vendors. In this particular configuration, the MTDC system consists of four terminals namely two advanced modular multi-level converter with high frequency isolation, one standard modular multi-level converter (MMC) with half bridge sub modules and the fourth terminal is modular DC-DC converter which integrates PV along with a Battery energy storage system with the DC grid directly. This paper presents a system level study of hybrid MTDC System. Also the DC fault contingency case has been explored thoroughly. An algorithm has been proposed to prevent the system damage. All the cases have been demonstrated with the PSCAD simulation results. To show the system practically works in real time, the system is also evaluated in a unique real time platform, consisting of interconnected RTDS and OPAL RT systems.
{"title":"Operation of hybrid multi-terminal DC system under normal and DC fault operating conditions","authors":"Sayan Acharya, Ali Azidehak, K. Vechalapu, M. Kashani, G. Chavan, S. Bhattacharya, N. Yousefpoor","doi":"10.1109/ECCE.2015.7310417","DOIUrl":"https://doi.org/10.1109/ECCE.2015.7310417","url":null,"abstract":"Recently, multi-terminal DC (MTDC) system has received more attention in the power transmission areas. Development of modular structured power converter topologies has now enabled the power converter technology to attain high voltage high power ratings. Compared to current source converter technology, voltage source converters have several benefits including higher power quality, independent control of active and reactive power etc. This paper focuses on a unique MTDC system consisting of terminals with different converter topologies especially considering the fact that each of the terminals may be manufactured by different vendors. In this particular configuration, the MTDC system consists of four terminals namely two advanced modular multi-level converter with high frequency isolation, one standard modular multi-level converter (MMC) with half bridge sub modules and the fourth terminal is modular DC-DC converter which integrates PV along with a Battery energy storage system with the DC grid directly. This paper presents a system level study of hybrid MTDC System. Also the DC fault contingency case has been explored thoroughly. An algorithm has been proposed to prevent the system damage. All the cases have been demonstrated with the PSCAD simulation results. To show the system practically works in real time, the system is also evaluated in a unique real time platform, consisting of interconnected RTDS and OPAL RT systems.","PeriodicalId":6654,"journal":{"name":"2015 IEEE Energy Conversion Congress and Exposition (ECCE)","volume":"45 1","pages":"5386-5393"},"PeriodicalIF":0.0,"publicationDate":"2015-10-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"85009263","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 : 2015-10-29DOI: 10.1109/ECCE.2015.7310077
L. Concari, D. Barater, Carlo Concar, G. Buticchi
This paper presents an active solution for the elimination of the leakage current, in a three-phase PWM inverter drive. With respect to a traditional three-phase bridge, the proposed solution reduces the common-mode voltage variations, both in amplitude and frequency. A novel architecture for the inverter is presented. Between the DC source and the traditional three-phase bridge, two active DC-decoupling devices and a voltage-clamping network have been added. A dedicated control strategy was developed adopting a modified Space Vector PWM modulation, oriented to the reduction of the common-mode voltage variations in the proposed topology. Simulations showing the good performance of the solution are presented. A preliminary prototype was developed and experimental results are presented.
{"title":"A novel three-phase inverter for common-mode voltage reduction in electric drives","authors":"L. Concari, D. Barater, Carlo Concar, G. Buticchi","doi":"10.1109/ECCE.2015.7310077","DOIUrl":"https://doi.org/10.1109/ECCE.2015.7310077","url":null,"abstract":"This paper presents an active solution for the elimination of the leakage current, in a three-phase PWM inverter drive. With respect to a traditional three-phase bridge, the proposed solution reduces the common-mode voltage variations, both in amplitude and frequency. A novel architecture for the inverter is presented. Between the DC source and the traditional three-phase bridge, two active DC-decoupling devices and a voltage-clamping network have been added. A dedicated control strategy was developed adopting a modified Space Vector PWM modulation, oriented to the reduction of the common-mode voltage variations in the proposed topology. Simulations showing the good performance of the solution are presented. A preliminary prototype was developed and experimental results are presented.","PeriodicalId":6654,"journal":{"name":"2015 IEEE Energy Conversion Congress and Exposition (ECCE)","volume":"1 1","pages":"2980-2987"},"PeriodicalIF":0.0,"publicationDate":"2015-10-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"77225326","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 : 2015-10-29DOI: 10.1109/ECCE.2015.7310590
Song Xiong, Siew-Chong Tan
High-voltage-gain step-up DC-DC converters are required for the applications of distributed energy resources (DERs). A family of bidirectional switched-capacitor (SC) converters with high gain ratio of any positive integer are proposed in this paper. These converters are of high efficiency, easy to control, and are with low output voltage ripple of less than 1%. The proposed converters are also capable of delivering bidirectional power, which is a key requirement for the applications with battery storage. A prototype of 9-time SC converter at 20 V input voltage, 100 W output, 75 kHz, is built and tested. Experiment results show that the maximum efficiency of the 9-time SC converter is over 98% without driver's loss and the efficiency over the entire load range between 25 W and 100 W is over 95.5% including the driver's loss.
分布式能源(DERs)的应用需要高电压增益升压DC-DC转换器。提出了一种具有任意正整数高增益比的双向开关电容器(SC)变换器。这些变换器效率高，易于控制，输出电压纹波小于1%。所提出的转换器还能够提供双向电力，这是电池存储应用的关键要求。建立了输入电压为20 V、输出功率为100 W、输出频率为75 kHz的9倍SC变换器样机并进行了测试。实验结果表明，在无驱动损耗的情况下，9倍SC变换器的最大效率可达98%以上，在25 W ~ 100 W的整个负载范围内，考虑驱动损耗，效率可达95.5%以上。
{"title":"Family of cascaded high-voltage-gain bidirectional switched-capacitor DC-DC converters","authors":"Song Xiong, Siew-Chong Tan","doi":"10.1109/ECCE.2015.7310590","DOIUrl":"https://doi.org/10.1109/ECCE.2015.7310590","url":null,"abstract":"High-voltage-gain step-up DC-DC converters are required for the applications of distributed energy resources (DERs). A family of bidirectional switched-capacitor (SC) converters with high gain ratio of any positive integer are proposed in this paper. These converters are of high efficiency, easy to control, and are with low output voltage ripple of less than 1%. The proposed converters are also capable of delivering bidirectional power, which is a key requirement for the applications with battery storage. A prototype of 9-time SC converter at 20 V input voltage, 100 W output, 75 kHz, is built and tested. Experiment results show that the maximum efficiency of the 9-time SC converter is over 98% without driver's loss and the efficiency over the entire load range between 25 W and 100 W is over 95.5% including the driver's loss.","PeriodicalId":6654,"journal":{"name":"2015 IEEE Energy Conversion Congress and Exposition (ECCE)","volume":"13 1","pages":"6648-6654"},"PeriodicalIF":0.0,"publicationDate":"2015-10-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"80969672","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 : 2015-10-29DOI: 10.1109/ECCE.2015.7310616
Yeongsu Bak, Yongsoo Cho, Kyo-Beum Lee
This paper proposes a control method for a reverse matrix converter (RMC)-fed three-phase permanent magnet synchronous motor (PMSM). In this regard, a direct power control (DPC) is used as an additional control method. An indirect matrix converter (IMC) is an AC/AC power conversion system without dc-link energy storage elements such as capacitors or inductors. The IMC features full four-quadrant operation and sinusoidal input-output currents. In addition, the IMC has many advantages such as small size, low weight and durability. However, the IMC has a maximum voltage transfer ratio of 0.866. In this study, to increase the voltage transfer ratio, a boost-mode IMC is used to feed the PMSM. The boost mode IMC is called a RMC because the topology of the RMC reverses the input and output power flow of the IMC. Therefore, the RMC has a minimum voltage transfer ratio of 1/0.866. However, in case the system has a low-resistance load such as a motor in the output stage, the control of the PMSM is difficult without an additional control method. In other studies regarding the RMC, a high-resistance load is used for the output stage, which prevents the aforementioned problem. The effectiveness of the proposed control method using the RMC-fed PMSM is verified through simulation results.
{"title":"Reverse matrix converter for permanent magnet synchronous motor drives using a direct power control","authors":"Yeongsu Bak, Yongsoo Cho, Kyo-Beum Lee","doi":"10.1109/ECCE.2015.7310616","DOIUrl":"https://doi.org/10.1109/ECCE.2015.7310616","url":null,"abstract":"This paper proposes a control method for a reverse matrix converter (RMC)-fed three-phase permanent magnet synchronous motor (PMSM). In this regard, a direct power control (DPC) is used as an additional control method. An indirect matrix converter (IMC) is an AC/AC power conversion system without dc-link energy storage elements such as capacitors or inductors. The IMC features full four-quadrant operation and sinusoidal input-output currents. In addition, the IMC has many advantages such as small size, low weight and durability. However, the IMC has a maximum voltage transfer ratio of 0.866. In this study, to increase the voltage transfer ratio, a boost-mode IMC is used to feed the PMSM. The boost mode IMC is called a RMC because the topology of the RMC reverses the input and output power flow of the IMC. Therefore, the RMC has a minimum voltage transfer ratio of 1/0.866. However, in case the system has a low-resistance load such as a motor in the output stage, the control of the PMSM is difficult without an additional control method. In other studies regarding the RMC, a high-resistance load is used for the output stage, which prevents the aforementioned problem. The effectiveness of the proposed control method using the RMC-fed PMSM is verified through simulation results.","PeriodicalId":6654,"journal":{"name":"2015 IEEE Energy Conversion Congress and Exposition (ECCE)","volume":"99 1","pages":"6832-6837"},"PeriodicalIF":0.0,"publicationDate":"2015-10-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"78557345","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 : 2015-10-29DOI: 10.1109/ECCE.2015.7310078
M. Uddin, Md. Mizanur Rahman
Regular condition monitoring of rotating machines using advanced spectrum analysis reduces the unexpected breakdown and excessive maintenance of the machines. If the irregularities are not identified in the early stage, the reliable operation of the machines are affected which may become catastrophic to the operation of the rotating machines. Therefore, this paper presents an online condition monitoring based fault detection of induction motor (IM). Characteristic features of motor current and vibration signals are analyzed in time domain as a fault diagnosis technique which is a key parameter to the fault threshold. Motor current and vibration signals are analyzed using Fast Fourier Transform (FFT) and Hilbert Transform (HT) to detect the severity of the fault and its possible location under different load conditions. The effectiveness of the proposed FFT and HT based analysis to predict the fault is verified using experimental data and its rate of success under different load conditions is also recorded. It is found that the HT can more precisely identify the fault using vibration signal as compared to the conventional FFT method. The magnitudes of the spectral components are extracted for the pattern reorganization of the fault. Spectrum analysis techniques are used under normal and bowed rotor condition to a 3-phase, 2 pole, 1/3 hp, 60 Hz, 2950 rpm IM drive.
{"title":"Online current and vibration signal monitoring based fault detection of bowed rotor induction motor","authors":"M. Uddin, Md. Mizanur Rahman","doi":"10.1109/ECCE.2015.7310078","DOIUrl":"https://doi.org/10.1109/ECCE.2015.7310078","url":null,"abstract":"Regular condition monitoring of rotating machines using advanced spectrum analysis reduces the unexpected breakdown and excessive maintenance of the machines. If the irregularities are not identified in the early stage, the reliable operation of the machines are affected which may become catastrophic to the operation of the rotating machines. Therefore, this paper presents an online condition monitoring based fault detection of induction motor (IM). Characteristic features of motor current and vibration signals are analyzed in time domain as a fault diagnosis technique which is a key parameter to the fault threshold. Motor current and vibration signals are analyzed using Fast Fourier Transform (FFT) and Hilbert Transform (HT) to detect the severity of the fault and its possible location under different load conditions. The effectiveness of the proposed FFT and HT based analysis to predict the fault is verified using experimental data and its rate of success under different load conditions is also recorded. It is found that the HT can more precisely identify the fault using vibration signal as compared to the conventional FFT method. The magnitudes of the spectral components are extracted for the pattern reorganization of the fault. Spectrum analysis techniques are used under normal and bowed rotor condition to a 3-phase, 2 pole, 1/3 hp, 60 Hz, 2950 rpm IM drive.","PeriodicalId":6654,"journal":{"name":"2015 IEEE Energy Conversion Congress and Exposition (ECCE)","volume":"147 Pt 2 1","pages":"2988-2994"},"PeriodicalIF":0.0,"publicationDate":"2015-10-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"84061210","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 : 2015-10-29DOI: 10.1109/ECCE.2015.7310462
A. Tripathi, K. Mainali, S. Madhusoodhanan, D. Patel, A. Kadavelugu, S. Hazra, S. Bhattacharya, K. Hatua
The Dual Active Bridge (DABC) dc-dc converter is an integral part of the recently popular Medium-Voltage (MV) dc micro-grid application due to its high-power density. The advent of 15kV SiC IGBT and 10kV SiC MOSFET, has enabled a non-cascaded MV and Medium-Frequency (MF) DABC converter which is expected to have higher MTBF than the cascaded H-bridge topology due to relatively small number of switches. A composite DABC three-level three-phase topology earlier proposed for MV-MF application, has dual secondary side bridges to meet the rated load conditions. The duty-ratio control of the primary and the independent operation of dual secondary bridges as a single active bridge, can be utilized to solve the light load ZVS problem. This paper presents flexible operating modes of this MV DABC for ZVS and higher efficiency. The MV DABC simulations are presented to bring out the advantages of this topology in wide range load and voltage-ratio conditions. This paper reports 8kV experimental validation of this DABC while using 15kV/40A SiC IGBTs on the MV side.
双有源桥式(DABC) dc-dc变换器因其高功率密度而成为近年来流行的中压(MV)直流微电网应用的重要组成部分。15kV SiC IGBT和10kV SiC MOSFET的出现，使得非级联MV和中频(MF) DABC转换器成为可能，由于开关数量相对较少，预计比级联h桥拓扑具有更高的MTBF。先前提出的用于MV-MF应用的复合DABC三电平三相拓扑结构具有双次侧桥以满足额定负载条件。通过控制主桥和双次桥作为单有源桥独立运行的占空比，可以解决轻载ZVS问题。本文介绍了该系统灵活的工作方式和较高的效率。通过MV - DABC仿真，验证了该拓扑在大范围负载和电压比条件下的优势。本文报道了该DABC在中频侧使用15kV/40A SiC igbt时的8kV实验验证。
{"title":"MVDC microgrids enabled by 15kV SiC IGBT based flexible three phase dual active bridge isolated DC-DC converter","authors":"A. Tripathi, K. Mainali, S. Madhusoodhanan, D. Patel, A. Kadavelugu, S. Hazra, S. Bhattacharya, K. Hatua","doi":"10.1109/ECCE.2015.7310462","DOIUrl":"https://doi.org/10.1109/ECCE.2015.7310462","url":null,"abstract":"The Dual Active Bridge (DABC) dc-dc converter is an integral part of the recently popular Medium-Voltage (MV) dc micro-grid application due to its high-power density. The advent of 15kV SiC IGBT and 10kV SiC MOSFET, has enabled a non-cascaded MV and Medium-Frequency (MF) DABC converter which is expected to have higher MTBF than the cascaded H-bridge topology due to relatively small number of switches. A composite DABC three-level three-phase topology earlier proposed for MV-MF application, has dual secondary side bridges to meet the rated load conditions. The duty-ratio control of the primary and the independent operation of dual secondary bridges as a single active bridge, can be utilized to solve the light load ZVS problem. This paper presents flexible operating modes of this MV DABC for ZVS and higher efficiency. The MV DABC simulations are presented to bring out the advantages of this topology in wide range load and voltage-ratio conditions. This paper reports 8kV experimental validation of this DABC while using 15kV/40A SiC IGBTs on the MV side.","PeriodicalId":6654,"journal":{"name":"2015 IEEE Energy Conversion Congress and Exposition (ECCE)","volume":"156 1","pages":"5708-5715"},"PeriodicalIF":0.0,"publicationDate":"2015-10-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"73276492","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：