Pub Date : 2020-10-11DOI: 10.1109/ECCE44975.2020.9235759
V. Iyer, Srinivas Gulur, S. Bhattacharya
Cascaded system stability plays a critical role in the proper operation of any multi-stage power electronic based solid state transformer (SST). Hence, it is imperative to develop small-signal models for the SST system, evaluate its stability margins and develop control based solutions for unstable operating conditions to ensure reliable operation. In this respect, the present work elucidates a system level control strategy for a multi-cell AC-DC SST that can be used to interface with a medium voltage (MV) grid. An active damping control strategy based on classical feedback theory is proposed to improve the stability margins of the individual DC link voltages within the multi-cell SST. This is achieved by emulating a virtual resistance at the individual DC links by employing an active damping control strategy. Such a control strategy presents several attractive benefits such as simple control implementation and does not require additional current or voltage sensors. It is demonstrated through extensive circuit simulations that a single active damping controller can stabilize all the individual DC link voltages within the multi-cell SST leading to excellent performance of the SST system.
{"title":"An Active Damping Control Strategy for a Multi-Cell AC-DC Solid State Transformer","authors":"V. Iyer, Srinivas Gulur, S. Bhattacharya","doi":"10.1109/ECCE44975.2020.9235759","DOIUrl":"https://doi.org/10.1109/ECCE44975.2020.9235759","url":null,"abstract":"Cascaded system stability plays a critical role in the proper operation of any multi-stage power electronic based solid state transformer (SST). Hence, it is imperative to develop small-signal models for the SST system, evaluate its stability margins and develop control based solutions for unstable operating conditions to ensure reliable operation. In this respect, the present work elucidates a system level control strategy for a multi-cell AC-DC SST that can be used to interface with a medium voltage (MV) grid. An active damping control strategy based on classical feedback theory is proposed to improve the stability margins of the individual DC link voltages within the multi-cell SST. This is achieved by emulating a virtual resistance at the individual DC links by employing an active damping control strategy. Such a control strategy presents several attractive benefits such as simple control implementation and does not require additional current or voltage sensors. It is demonstrated through extensive circuit simulations that a single active damping controller can stabilize all the individual DC link voltages within the multi-cell SST leading to excellent performance of the SST system.","PeriodicalId":433712,"journal":{"name":"2020 IEEE Energy Conversion Congress and Exposition (ECCE)","volume":"76 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2020-10-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"121178601","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 : 2020-10-11DOI: 10.1109/ECCE44975.2020.9235712
T. Zou, D. Gerada, A. Walker, G. Vakil, S. La Rocca, A. La Rocca, K. Paciura, Richard Barden, E. Ernest, Shaohong Zhu, Naila Qayyum, A. McQueen, A. Bardalai, R. Ram kumar, A. Marfoli, C. Gerada
In recent years, synchronous reluctance (Syn-Rel) machines are research hotspots in variable speed motor drives due to their robust rotor structure and wide constant power speed range (CPSR). More practically, when kVA limitation is considered, embedded permanent magnets (PMs) have been widely adopted in Syn-Rel rotors to further increase power density as well as power factor. In this paper, the authors have investigated the potential of PM-assisted Syn-Rel machine to be the next generation electrical propulsion motor topology for automotive application, with special attention put on a key geometric parameter, i.e., airgap length. In MTPA region, the influence of airgap length on different torque components has been analyzed in detail based on the frozen permeability method. In field weakening region, the variation trend of several key performance such as peak power, iron loss and torque ripple have been investigated along with airgap length. It is found that with specifically high level of electric and magnetic loading, there exists optimal value of airgap length to achieve high power density based on specific cooling and kVA limitation. Numerical FEA and experimental tests are associated to validate the conclusions.
{"title":"Influence of Airgap Length on Performance of High Power PM-Assisted Syn-Rel Machines","authors":"T. Zou, D. Gerada, A. Walker, G. Vakil, S. La Rocca, A. La Rocca, K. Paciura, Richard Barden, E. Ernest, Shaohong Zhu, Naila Qayyum, A. McQueen, A. Bardalai, R. Ram kumar, A. Marfoli, C. Gerada","doi":"10.1109/ECCE44975.2020.9235712","DOIUrl":"https://doi.org/10.1109/ECCE44975.2020.9235712","url":null,"abstract":"In recent years, synchronous reluctance (Syn-Rel) machines are research hotspots in variable speed motor drives due to their robust rotor structure and wide constant power speed range (CPSR). More practically, when kVA limitation is considered, embedded permanent magnets (PMs) have been widely adopted in Syn-Rel rotors to further increase power density as well as power factor. In this paper, the authors have investigated the potential of PM-assisted Syn-Rel machine to be the next generation electrical propulsion motor topology for automotive application, with special attention put on a key geometric parameter, i.e., airgap length. In MTPA region, the influence of airgap length on different torque components has been analyzed in detail based on the frozen permeability method. In field weakening region, the variation trend of several key performance such as peak power, iron loss and torque ripple have been investigated along with airgap length. It is found that with specifically high level of electric and magnetic loading, there exists optimal value of airgap length to achieve high power density based on specific cooling and kVA limitation. Numerical FEA and experimental tests are associated to validate the conclusions.","PeriodicalId":433712,"journal":{"name":"2020 IEEE Energy Conversion Congress and Exposition (ECCE)","volume":"31 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2020-10-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"121398272","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 : 2020-10-11DOI: 10.1109/ECCE44975.2020.9235729
Cheng Xue, Yuzhuo Li, Y. Li
Finite-control-set model predictive control (FCS-MPC) has been applied to various power converters successfully in the last decades. However, the FCS-MPC algorithm for a power converter is usually a case-by-case design process. In this article, instead of designing an FCS-MPC scheme for power converters individually, a systematic FCS-MPC design framework is proposed. Firstly, the power converters are classified into associate converter groups based on isomorphic and dual relationships. Secondly, all converters in the associate group are modeled through unified models. Then, the same FCS-MPC framework can be shared between the converters with special relationships, which shows a significant simplification compared to the conventional design process. Also, the system performance of power converters in the associate group can be analyzed systematically. Various converters (e.g., three-phase current-source/voltage-source converter, single-phase T-type voltage-source converter) are selected as case studies in this work to show the feasibility of this work. Therefore, the systematic FCS-MPC design represents a universal design for a set of power converters while not only a specific one.
{"title":"Systematic Finite-Control-Set Model Predictive Control Design with Unified Model for Isomorphic and Dual Power Converters","authors":"Cheng Xue, Yuzhuo Li, Y. Li","doi":"10.1109/ECCE44975.2020.9235729","DOIUrl":"https://doi.org/10.1109/ECCE44975.2020.9235729","url":null,"abstract":"Finite-control-set model predictive control (FCS-MPC) has been applied to various power converters successfully in the last decades. However, the FCS-MPC algorithm for a power converter is usually a case-by-case design process. In this article, instead of designing an FCS-MPC scheme for power converters individually, a systematic FCS-MPC design framework is proposed. Firstly, the power converters are classified into associate converter groups based on isomorphic and dual relationships. Secondly, all converters in the associate group are modeled through unified models. Then, the same FCS-MPC framework can be shared between the converters with special relationships, which shows a significant simplification compared to the conventional design process. Also, the system performance of power converters in the associate group can be analyzed systematically. Various converters (e.g., three-phase current-source/voltage-source converter, single-phase T-type voltage-source converter) are selected as case studies in this work to show the feasibility of this work. Therefore, the systematic FCS-MPC design represents a universal design for a set of power converters while not only a specific one.","PeriodicalId":433712,"journal":{"name":"2020 IEEE Energy Conversion Congress and Exposition (ECCE)","volume":"176 5 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2020-10-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"114080074","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 : 2020-10-11DOI: 10.1109/ECCE44975.2020.9235846
M. Borghei, M. Ghassemi
The aviation industry, as one of the major CO2 producers, anticipates a reduction in its carbon emission. While big manufacturers and governmental agencies are betting on the more- (and soon all-) electrified aircraft to reduce the dependency of this industry on fossil fuels, there are major milestones to be reached in the next three decades. Among those, enhancing the specific power of systems, that are expected to substitute the fuel-based engines, is one of the primary targets. An enabling technology to achieve this goal is the wide bandgap (WBG)-based power converting, a promising technology toward increasing the efficiency of electrical systems. However, not only the partial discharges (PDs) -induced by the high voltage, high-frequency, fast-rise square voltages generated by these systems- endanger the insulation system, but also the operation at higher altitudes can be another game-changing factor in the design of power converters. This study puts forth the investigation of the pressure impact in tandem with the impact of short rise-times on various PD characteristics including but not limited to PD true charge magnitude and duration. The results show how the incorporation of harsh environmental conditions and short rise times lead to more intense and prolonged discharges. Moreover, it shows that micro-voids that have negligible PD activities at sea level can turn into serious threats at higher altitudes. In this project, COMSOL Multiphysics interfaced with MATLAB is used to simulate the PD identification process based on the experimental data found in the literature.
{"title":"Investigation of Low-Pressure Condition Impact on Partial Discharge in Micro-Voids using Finite-Element Analysis","authors":"M. Borghei, M. Ghassemi","doi":"10.1109/ECCE44975.2020.9235846","DOIUrl":"https://doi.org/10.1109/ECCE44975.2020.9235846","url":null,"abstract":"The aviation industry, as one of the major CO2 producers, anticipates a reduction in its carbon emission. While big manufacturers and governmental agencies are betting on the more- (and soon all-) electrified aircraft to reduce the dependency of this industry on fossil fuels, there are major milestones to be reached in the next three decades. Among those, enhancing the specific power of systems, that are expected to substitute the fuel-based engines, is one of the primary targets. An enabling technology to achieve this goal is the wide bandgap (WBG)-based power converting, a promising technology toward increasing the efficiency of electrical systems. However, not only the partial discharges (PDs) -induced by the high voltage, high-frequency, fast-rise square voltages generated by these systems- endanger the insulation system, but also the operation at higher altitudes can be another game-changing factor in the design of power converters. This study puts forth the investigation of the pressure impact in tandem with the impact of short rise-times on various PD characteristics including but not limited to PD true charge magnitude and duration. The results show how the incorporation of harsh environmental conditions and short rise times lead to more intense and prolonged discharges. Moreover, it shows that micro-voids that have negligible PD activities at sea level can turn into serious threats at higher altitudes. In this project, COMSOL Multiphysics interfaced with MATLAB is used to simulate the PD identification process based on the experimental data found in the literature.","PeriodicalId":433712,"journal":{"name":"2020 IEEE Energy Conversion Congress and Exposition (ECCE)","volume":"81 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2020-10-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"114314985","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 : 2020-10-11DOI: 10.1109/ECCE44975.2020.9235909
Liyan Zhu, Hua Bai, Alan Brown, Matt Mcammond
Auxiliary Power Module (APM) bridges the high voltage battery with the low voltage auxiliary battery in Electrical Vehicles (EV). This paper designed such APM for EV rated at 3.5kW with a peak power of >6kW, covering 250-400V input and 10-16V output. One key dynamic process lies in the pre-charge mode, i.e., charging the DC bus capacitor before the full operation. Another challenge lies in the DC bias current for the bridge based circuit. A novel and simply DC bias detection circuit is proposed to sense the unbalanced current in the transformer. Both simulation and test results verified that the proposed method can effectively detect and eliminate the DC bias in the transformer.
{"title":"Dynamic Process Analysis of a High-Power Bidirectional DC/DC Converter for Electric Vehicles","authors":"Liyan Zhu, Hua Bai, Alan Brown, Matt Mcammond","doi":"10.1109/ECCE44975.2020.9235909","DOIUrl":"https://doi.org/10.1109/ECCE44975.2020.9235909","url":null,"abstract":"Auxiliary Power Module (APM) bridges the high voltage battery with the low voltage auxiliary battery in Electrical Vehicles (EV). This paper designed such APM for EV rated at 3.5kW with a peak power of >6kW, covering 250-400V input and 10-16V output. One key dynamic process lies in the pre-charge mode, i.e., charging the DC bus capacitor before the full operation. Another challenge lies in the DC bias current for the bridge based circuit. A novel and simply DC bias detection circuit is proposed to sense the unbalanced current in the transformer. Both simulation and test results verified that the proposed method can effectively detect and eliminate the DC bias in the transformer.","PeriodicalId":433712,"journal":{"name":"2020 IEEE Energy Conversion Congress and Exposition (ECCE)","volume":"25 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2020-10-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"114537679","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 : 2020-10-11DOI: 10.1109/ECCE44975.2020.9235711
J. Noon, He Song, B. Wen, I. Cvetkovic, Srdjan Srdic, Gernot Pammer, R. Burgos
This paper details the design and implementation of a power hardware-in-the-loop (PHIL) electric machine emulator for the purpose of induction motor drive testing. The biggest advantage of PHIL over traditional motor drive testbenches is its flexibility to serve as a test bench for a variety of electric machines without any hardware changes, thereby reducing the testbench hardware overhead. The topology and the capabilities of EGSTON Power Electronics’ CSU PHIL platform to emulate the electrical machines are presented. Additionally, the practical implementation of the PHIL testbench is discussed, including the interface inductor and the measurement setup. The tradeoffs between current-source and voltage-source based emulation of electric machines are presented. This work considers current-source based emulation because the current emulation fidelity is independent of the interface inductor value which makes this approach very flexible. Finally, the emulation results are presented and compared experimentally with a physical machine.
{"title":"Design and Evaluation of a Power Hardware-in-the-Loop Machine Emulator","authors":"J. Noon, He Song, B. Wen, I. Cvetkovic, Srdjan Srdic, Gernot Pammer, R. Burgos","doi":"10.1109/ECCE44975.2020.9235711","DOIUrl":"https://doi.org/10.1109/ECCE44975.2020.9235711","url":null,"abstract":"This paper details the design and implementation of a power hardware-in-the-loop (PHIL) electric machine emulator for the purpose of induction motor drive testing. The biggest advantage of PHIL over traditional motor drive testbenches is its flexibility to serve as a test bench for a variety of electric machines without any hardware changes, thereby reducing the testbench hardware overhead. The topology and the capabilities of EGSTON Power Electronics’ CSU PHIL platform to emulate the electrical machines are presented. Additionally, the practical implementation of the PHIL testbench is discussed, including the interface inductor and the measurement setup. The tradeoffs between current-source and voltage-source based emulation of electric machines are presented. This work considers current-source based emulation because the current emulation fidelity is independent of the interface inductor value which makes this approach very flexible. Finally, the emulation results are presented and compared experimentally with a physical machine.","PeriodicalId":433712,"journal":{"name":"2020 IEEE Energy Conversion Congress and Exposition (ECCE)","volume":"72 6","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2020-10-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"113968598","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 : 2020-10-11DOI: 10.1109/ecce44975.2020.9236385
{"title":"ECCE 2020 Committees","authors":"","doi":"10.1109/ecce44975.2020.9236385","DOIUrl":"https://doi.org/10.1109/ecce44975.2020.9236385","url":null,"abstract":"","PeriodicalId":433712,"journal":{"name":"2020 IEEE Energy Conversion Congress and Exposition (ECCE)","volume":"36 8","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2020-10-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"114021017","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 : 2020-10-11DOI: 10.1109/ECCE44975.2020.9236330
M. Pulvirenti, A. Sciacca, L. Salvo, M. Nania, G. Scelba, G. Scarcella
The aim of this paper is to evaluate the impact of SiC MOSFET body diode reverse recovery on device switching speed limits. Half-bridge converter leg, composed of 1200V, 130A SiC MOSFETs in HIP 247-4L package, has been analyzed in this study and experimental tests have been conducted, evaluating the electrical stresses to which the power devices are subjected when they are operated in extreme conditions. Results highlight how reverse recovery process can be significantly affected by the operating conditions, in terms of current slopes and temperature.
本文的目的是评估SiC MOSFET体二极管反向恢复对器件开关速度限制的影响。本研究分析了由HIP 247-4L封装的1200V, 130A SiC mosfet组成的半桥变换器支腿，并进行了实验测试，评估了功率器件在极端条件下工作时所承受的电应力。结果强调了反向回收过程如何受到当前斜率和温度等操作条件的显著影响。
{"title":"Body Diode Reverse Recovery Effects on SiC MOSFET Half-Bridge Converters","authors":"M. Pulvirenti, A. Sciacca, L. Salvo, M. Nania, G. Scelba, G. Scarcella","doi":"10.1109/ECCE44975.2020.9236330","DOIUrl":"https://doi.org/10.1109/ECCE44975.2020.9236330","url":null,"abstract":"The aim of this paper is to evaluate the impact of SiC MOSFET body diode reverse recovery on device switching speed limits. Half-bridge converter leg, composed of 1200V, 130A SiC MOSFETs in HIP 247-4L package, has been analyzed in this study and experimental tests have been conducted, evaluating the electrical stresses to which the power devices are subjected when they are operated in extreme conditions. Results highlight how reverse recovery process can be significantly affected by the operating conditions, in terms of current slopes and temperature.","PeriodicalId":433712,"journal":{"name":"2020 IEEE Energy Conversion Congress and Exposition (ECCE)","volume":"183 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2020-10-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"114741900","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 : 2020-10-11DOI: 10.1109/ECCE44975.2020.9235904
Abdur Rehman, Byungtaek Kim, Y. Joo
This paper demonstrates that the problem in design of vernier motors that their high torque capability needs to be compromised due to extremely low power factor is improved by using the series compensation method and torque performance in the field of weakened driving is also strengthen. In order to quantitatively analyze the advantages obtained from vernier motors by the series compensation, first the vernier motors with various gear ratios are designed under a constraint of the given air gap radius. From the comparison of the back electromotive force (EMF), reactance and speed versus torque characteristics for the designed models, it is shown that the model with the largest back EMF, on the contrary, has the worst torque characteristic at high speed. To improve the torque characteristics in the high-speed operation area, the winding of the vernier motor with the largest counter electromotive force is configured as the open ended, and the series compensation is performed by connecting the secondary inverter and the floating capacitance. The characteristics of the vernier motor with the series compensation are first analyzed using electrical circuit simulation and then the time step finite element (FE) method is also performed. Especially, in the FE simulations, the equivalent capacitances reflecting series compensation are used to reduce the enormous calculation time of the FE analysis considering the actual inverter operations. From the analysis results, the improvement of the torque and power factor characteristics of the motor is confirmed.
{"title":"Design and Analysis of a Vernier Motor Considering Series Compensation","authors":"Abdur Rehman, Byungtaek Kim, Y. Joo","doi":"10.1109/ECCE44975.2020.9235904","DOIUrl":"https://doi.org/10.1109/ECCE44975.2020.9235904","url":null,"abstract":"This paper demonstrates that the problem in design of vernier motors that their high torque capability needs to be compromised due to extremely low power factor is improved by using the series compensation method and torque performance in the field of weakened driving is also strengthen. In order to quantitatively analyze the advantages obtained from vernier motors by the series compensation, first the vernier motors with various gear ratios are designed under a constraint of the given air gap radius. From the comparison of the back electromotive force (EMF), reactance and speed versus torque characteristics for the designed models, it is shown that the model with the largest back EMF, on the contrary, has the worst torque characteristic at high speed. To improve the torque characteristics in the high-speed operation area, the winding of the vernier motor with the largest counter electromotive force is configured as the open ended, and the series compensation is performed by connecting the secondary inverter and the floating capacitance. The characteristics of the vernier motor with the series compensation are first analyzed using electrical circuit simulation and then the time step finite element (FE) method is also performed. Especially, in the FE simulations, the equivalent capacitances reflecting series compensation are used to reduce the enormous calculation time of the FE analysis considering the actual inverter operations. From the analysis results, the improvement of the torque and power factor characteristics of the motor is confirmed.","PeriodicalId":433712,"journal":{"name":"2020 IEEE Energy Conversion Congress and Exposition (ECCE)","volume":"24 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2020-10-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"114879221","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 : 2020-10-11DOI: 10.1109/ECCE44975.2020.9235732
M. S. Ansari, Ibhan Chand Rath, S. Patro, A. Shukla
The parallel hybrid converter (PHC) is gaining popularity for high voltage direct current applications. The chain-links (CLs) in the PHC bear only a fraction of the output phase current and exhibit double frequency nature. This reduces the energy storage requirement and the losses occurring in the CLs of the PHC. The PHC converter also requires lower number of sub-modules (SMs) and switching devices. The existing PHC configuration requires harmonic voltage injection in the CLs to feed the ac grid, thereby injecting harmonic currents into the main DC-link and it is not dc fault-tolerant. A new front-front dc-dc hybrid configuration for high voltage transmission systems using PHC is presented, which eliminates the need for harmonic voltage injection. The proposed dc-dc configuration is dc fault-tolerant and requires reduced SM capacitors size and smaller interlinking transformers owing to high-frequency switching operation. The authenticity of the proposed dc-dc converter is verified by caring out various simulation and hardware studies.
{"title":"High Power Dc-Dc Converter Based on Parallel Hybrid Converter","authors":"M. S. Ansari, Ibhan Chand Rath, S. Patro, A. Shukla","doi":"10.1109/ECCE44975.2020.9235732","DOIUrl":"https://doi.org/10.1109/ECCE44975.2020.9235732","url":null,"abstract":"The parallel hybrid converter (PHC) is gaining popularity for high voltage direct current applications. The chain-links (CLs) in the PHC bear only a fraction of the output phase current and exhibit double frequency nature. This reduces the energy storage requirement and the losses occurring in the CLs of the PHC. The PHC converter also requires lower number of sub-modules (SMs) and switching devices. The existing PHC configuration requires harmonic voltage injection in the CLs to feed the ac grid, thereby injecting harmonic currents into the main DC-link and it is not dc fault-tolerant. A new front-front dc-dc hybrid configuration for high voltage transmission systems using PHC is presented, which eliminates the need for harmonic voltage injection. The proposed dc-dc configuration is dc fault-tolerant and requires reduced SM capacitors size and smaller interlinking transformers owing to high-frequency switching operation. The authenticity of the proposed dc-dc converter is verified by caring out various simulation and hardware studies.","PeriodicalId":433712,"journal":{"name":"2020 IEEE Energy Conversion Congress and Exposition (ECCE)","volume":"56 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2020-10-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"124462478","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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