Pub Date : 2018-09-01DOI: 10.1109/ECCE.2018.8558384
Shunsuke Takuma, K. Kusaka, J. Itoh
This paper proposes a single-step commutation method based on an output current direction estimation for a three-phase-to-single-phase matrix converter. Conventional four or two-step commutation causes a commutation failure due to the detection error of grid voltages. In addition, an input current is distorted due to an output voltage error in the low modulation index on a three-phase to single-phase matrix converter. A zero vector to decrease an output current up to zero is proposed to achieve single-step commutation under all region. In the proposed single-step commutation, by modulating only one of two devices in a bi-directional switch and utilizing a zero vector, the commutation failures are avoided completely regardless of the voltage detection error. As experimental results, the input current distortion is 2.3% at 10 kW with the proposed single-step commutation. The input current THD in low modulation index is reduced by 34.9% in comparison with the conventional four-step commutation. The proposed single-step commutation has a considerably simple commutation algorithm.
{"title":"Single-Step Commutation Method for Three-Phase to Single-Phase Matrix Converter","authors":"Shunsuke Takuma, K. Kusaka, J. Itoh","doi":"10.1109/ECCE.2018.8558384","DOIUrl":"https://doi.org/10.1109/ECCE.2018.8558384","url":null,"abstract":"This paper proposes a single-step commutation method based on an output current direction estimation for a three-phase-to-single-phase matrix converter. Conventional four or two-step commutation causes a commutation failure due to the detection error of grid voltages. In addition, an input current is distorted due to an output voltage error in the low modulation index on a three-phase to single-phase matrix converter. A zero vector to decrease an output current up to zero is proposed to achieve single-step commutation under all region. In the proposed single-step commutation, by modulating only one of two devices in a bi-directional switch and utilizing a zero vector, the commutation failures are avoided completely regardless of the voltage detection error. As experimental results, the input current distortion is 2.3% at 10 kW with the proposed single-step commutation. The input current THD in low modulation index is reduced by 34.9% in comparison with the conventional four-step commutation. The proposed single-step commutation has a considerably simple commutation algorithm.","PeriodicalId":415217,"journal":{"name":"2018 IEEE Energy Conversion Congress and Exposition (ECCE)","volume":"18 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2018-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"117014020","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 : 2018-09-01DOI: 10.1109/ECCE.2018.8557425
S. Pan, Cong Wang, P. Jain
DC distribution system has two voltage standards, 48V and 380V. Most of the studies believe that 380V DC distribution is more promising than the 48V DC distribution. this paper will start from comparison of 48V DC and 380V DC system in aspect of overall efficiency, cable cost and loss, and reliability. The results show that the 380V DC system has higher efficiency, while the 48V DC system has higher system reliability. Based on this study, a new DC UPS architecture, which combines the advantages of both the systems, is introduced. Then, a three-port power converter is proposed to implement the proposed hybrid 48V/380V DC UPS Structure. Theoretical analysis, simulation and experimental results validate the operation of the proposed three-port power converter.
{"title":"Structure and Implementation of a Hybrid 48V/380V DC UPS for IT Datacenters","authors":"S. Pan, Cong Wang, P. Jain","doi":"10.1109/ECCE.2018.8557425","DOIUrl":"https://doi.org/10.1109/ECCE.2018.8557425","url":null,"abstract":"DC distribution system has two voltage standards, 48V and 380V. Most of the studies believe that 380V DC distribution is more promising than the 48V DC distribution. this paper will start from comparison of 48V DC and 380V DC system in aspect of overall efficiency, cable cost and loss, and reliability. The results show that the 380V DC system has higher efficiency, while the 48V DC system has higher system reliability. Based on this study, a new DC UPS architecture, which combines the advantages of both the systems, is introduced. Then, a three-port power converter is proposed to implement the proposed hybrid 48V/380V DC UPS Structure. Theoretical analysis, simulation and experimental results validate the operation of the proposed three-port power converter.","PeriodicalId":415217,"journal":{"name":"2018 IEEE Energy Conversion Congress and Exposition (ECCE)","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2018-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"129865080","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 : 2018-09-01DOI: 10.1109/ECCE.2018.8558123
Oinan Ni, Ming Yang, S. Odhano, P. Zanchetta, Xiaosheng Liu, Dianguo Xu
with the increasing demand of low-cost, high-efficiency, high performance for AC motor drive system, the permanent-magnet synchronous motor (PMSM) with binary Hall sensors begins to be adopted in many fields. Compared with sensorless control, the usage of binary Hall sensors is a guarantee for the drive to achieve moderate control performance, and it is in smaller volume and more cost-effective compared with other types of position sensors. In this paper, a solution is provided to realize fully-closed loop control with low-resolution position sensors, by treating the position and speed estimators as separate systems. Results reveal that the model-based methods can take advantage of model information and model-free methods can smoothly process the quantized Hall position signal. Extensive experiment results are provided demonstrating the position control performance and basic servo performance for a PMSM drive using 3 bit-per-pole-pair sensing system.
{"title":"Analysis and Design of Position and Velocity Estimation Scheme for PM Servo Motor Drive with Binary Hall Sensors","authors":"Oinan Ni, Ming Yang, S. Odhano, P. Zanchetta, Xiaosheng Liu, Dianguo Xu","doi":"10.1109/ECCE.2018.8558123","DOIUrl":"https://doi.org/10.1109/ECCE.2018.8558123","url":null,"abstract":"with the increasing demand of low-cost, high-efficiency, high performance for AC motor drive system, the permanent-magnet synchronous motor (PMSM) with binary Hall sensors begins to be adopted in many fields. Compared with sensorless control, the usage of binary Hall sensors is a guarantee for the drive to achieve moderate control performance, and it is in smaller volume and more cost-effective compared with other types of position sensors. In this paper, a solution is provided to realize fully-closed loop control with low-resolution position sensors, by treating the position and speed estimators as separate systems. Results reveal that the model-based methods can take advantage of model information and model-free methods can smoothly process the quantized Hall position signal. Extensive experiment results are provided demonstrating the position control performance and basic servo performance for a PMSM drive using 3 bit-per-pole-pair sensing system.","PeriodicalId":415217,"journal":{"name":"2018 IEEE Energy Conversion Congress and Exposition (ECCE)","volume":"49 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2018-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"128392982","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 : 2018-09-01DOI: 10.1109/ECCE.2018.8557888
Kang Wang, R. Lorenz, Noor Aamir Baloch
Indirect field oriented control (IFOC) is widely used in induction machine (IM) drives. IFOC controls torque and rotor flux linkage by using an embedded current regulator. The torque and speed response are limited by current regulator bandwidth. Different from IFOC, without any current regulator, deadbeat-direct torque and flux control (DB-DTFC) calculates the voltage commands directly, which can achieve torque commands within just one switching period. However, high frequency torque and speed response have not been systematically discussed. First, IFOC, DB-DTFC algorithm and implementation issues are discussed in details. Then, the metric for evaluating the high frequency torque and speed response are proposed and evaluated. In the torque response, the DB-DTFC drive shows higher torque command tracking bandwidth with linear phase lag compared to IFOC drive. In the speed response, parameter sensitivities of high frequency speed command tracking for the two control algorithms are compared with encoder feedback. Finally, the speed response in the self-sensing mode for the two control algorithms are also compared.
{"title":"Torque and Speed Response Differences Between Deadbeat-Direct Torque and Flux Control and Indirect Field Oriented Control for Induction Machine Drives","authors":"Kang Wang, R. Lorenz, Noor Aamir Baloch","doi":"10.1109/ECCE.2018.8557888","DOIUrl":"https://doi.org/10.1109/ECCE.2018.8557888","url":null,"abstract":"Indirect field oriented control (IFOC) is widely used in induction machine (IM) drives. IFOC controls torque and rotor flux linkage by using an embedded current regulator. The torque and speed response are limited by current regulator bandwidth. Different from IFOC, without any current regulator, deadbeat-direct torque and flux control (DB-DTFC) calculates the voltage commands directly, which can achieve torque commands within just one switching period. However, high frequency torque and speed response have not been systematically discussed. First, IFOC, DB-DTFC algorithm and implementation issues are discussed in details. Then, the metric for evaluating the high frequency torque and speed response are proposed and evaluated. In the torque response, the DB-DTFC drive shows higher torque command tracking bandwidth with linear phase lag compared to IFOC drive. In the speed response, parameter sensitivities of high frequency speed command tracking for the two control algorithms are compared with encoder feedback. Finally, the speed response in the self-sensing mode for the two control algorithms are also compared.","PeriodicalId":415217,"journal":{"name":"2018 IEEE Energy Conversion Congress and Exposition (ECCE)","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2018-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"128429762","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 : 2018-09-01DOI: 10.1109/ECCE.2018.8557409
Hyeon-gyu Choi, Jung-Ik Ha
Generally, the operating speed is limited by the maximum output voltage of the voltage source inverter. To expand the operating speed, the capacitors are series connected to the synchronous permanent magnet motor drive system. These capacitors increase the maximum available speed. As a result, the motor can operate at the high-speed region that was previously impossible. To control this system, the current reference generator and current controller are designed based on the results of the plant analysis. The effectiveness of the proposed method is verified by the simulation results.
{"title":"Design and Control Method for Synchronous Permanent Magnet Motor Drive System with Series Capacitor","authors":"Hyeon-gyu Choi, Jung-Ik Ha","doi":"10.1109/ECCE.2018.8557409","DOIUrl":"https://doi.org/10.1109/ECCE.2018.8557409","url":null,"abstract":"Generally, the operating speed is limited by the maximum output voltage of the voltage source inverter. To expand the operating speed, the capacitors are series connected to the synchronous permanent magnet motor drive system. These capacitors increase the maximum available speed. As a result, the motor can operate at the high-speed region that was previously impossible. To control this system, the current reference generator and current controller are designed based on the results of the plant analysis. The effectiveness of the proposed method is verified by the simulation results.","PeriodicalId":415217,"journal":{"name":"2018 IEEE Energy Conversion Congress and Exposition (ECCE)","volume":"67 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2018-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"128753616","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 : 2018-09-01DOI: 10.1109/ECCE.2018.8557921
Jishnu Kavil Kambrath, Yoon Changwoo, Youyi Wang, Y. Yoon
Structural disequilibrium in wind power generating system occurs due to a tolerance in manufacturing, installation defects, and also from an extreme torsional stress that may bring an irreversible displacement in the mechanical structure such as hard stop, extreme wind conditions, and grid faults etc. The unbalanced masses in wind turbine excites vibration forces that affect the life expectancy of the mechanical system as well as the performance of the wind turbine. Hence, the exploration of new control solution for the dynamic torque reduction will be necessary to achieve a more reliable wind power generation. In this paper, a 2.5 MW wind turbine experiencing a mechanical unbalance is modelled and its performance is analysed. A new control algorithm based on generator and planetary gear speed differences is proposed for the dynamic torque reduction. The proposed solution provides a virtual material damping in the system and helps to protect the sensitive driveline components. Simulation results, under 3 different operating regions, illustrate the performance of the control in reducing the dynamic torque amplitudes in wind turbines. The proposed algorithm is experimentally verified in an unbalanced multi-inertia test set up operating under critical speed.
{"title":"Modelling and Control to Mitigate Dynamic Effects of Unbalanced Masses in Wind Turbine Systems","authors":"Jishnu Kavil Kambrath, Yoon Changwoo, Youyi Wang, Y. Yoon","doi":"10.1109/ECCE.2018.8557921","DOIUrl":"https://doi.org/10.1109/ECCE.2018.8557921","url":null,"abstract":"Structural disequilibrium in wind power generating system occurs due to a tolerance in manufacturing, installation defects, and also from an extreme torsional stress that may bring an irreversible displacement in the mechanical structure such as hard stop, extreme wind conditions, and grid faults etc. The unbalanced masses in wind turbine excites vibration forces that affect the life expectancy of the mechanical system as well as the performance of the wind turbine. Hence, the exploration of new control solution for the dynamic torque reduction will be necessary to achieve a more reliable wind power generation. In this paper, a 2.5 MW wind turbine experiencing a mechanical unbalance is modelled and its performance is analysed. A new control algorithm based on generator and planetary gear speed differences is proposed for the dynamic torque reduction. The proposed solution provides a virtual material damping in the system and helps to protect the sensitive driveline components. Simulation results, under 3 different operating regions, illustrate the performance of the control in reducing the dynamic torque amplitudes in wind turbines. The proposed algorithm is experimentally verified in an unbalanced multi-inertia test set up operating under critical speed.","PeriodicalId":415217,"journal":{"name":"2018 IEEE Energy Conversion Congress and Exposition (ECCE)","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2018-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"128785517","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 : 2018-09-01DOI: 10.1109/ECCE.2018.8558291
Liran Zheng, Xiangyu Han, Z. An, R. Kandula, K. Kandasamy, M. Saeedifard, D. Divan
This paper presents the design and build of a universal MVDC converter that can interface either LVAC or LVDC while providing bi-directional power flow and high-frequency isolation. The proposed universal MVDC converter module can serve as a building block for higher-voltage higher-power systems. The converter modules are based on the soft-switching solid-state transformer (S4T), realized using 3.3 kV SiC MOSFETs, and can provide integrated high-frequency isolation, low EMI through low dv/dt, and high efficiency over the full operating load range realized with soft-switching techniques. The topology, operating principle, control philosophy addressing challenges associated with modular converters including dynamic and steady-state voltage sharing between modules on the HV side, design and selection of components to realize a 50 kVA 5 kV DC to 600 V DC/480 V AC is presented. Simulation results verifying the operation of the MVDC converter are also presented.
本文介绍了一种通用MVDC变换器的设计和构建，该变换器可以连接LVAC或LVDC，同时提供双向潮流和高频隔离。所提出的通用MVDC变换器模块可以作为高电压、高功率系统的构建模块。该变换器模块基于软开关固态变压器(S4T)，使用3.3 kV SiC mosfet实现，可以提供集成的高频隔离，通过低dv/dt实现低EMI，以及通过软开关技术实现的全工作负载范围内的高效率。介绍了模块化变换器的拓扑结构、工作原理、控制原理，解决了与模块化变换器相关的挑战，包括高压侧模块之间的动态和稳态电压共享，以及实现50 kVA 5 kV DC到600 V DC/480 V AC的组件的设计和选择。仿真结果验证了MVDC变换器的运行。
{"title":"Modular Universal Converter for MVDC Applications","authors":"Liran Zheng, Xiangyu Han, Z. An, R. Kandula, K. Kandasamy, M. Saeedifard, D. Divan","doi":"10.1109/ECCE.2018.8558291","DOIUrl":"https://doi.org/10.1109/ECCE.2018.8558291","url":null,"abstract":"This paper presents the design and build of a universal MVDC converter that can interface either LVAC or LVDC while providing bi-directional power flow and high-frequency isolation. The proposed universal MVDC converter module can serve as a building block for higher-voltage higher-power systems. The converter modules are based on the soft-switching solid-state transformer (S4T), realized using 3.3 kV SiC MOSFETs, and can provide integrated high-frequency isolation, low EMI through low dv/dt, and high efficiency over the full operating load range realized with soft-switching techniques. The topology, operating principle, control philosophy addressing challenges associated with modular converters including dynamic and steady-state voltage sharing between modules on the HV side, design and selection of components to realize a 50 kVA 5 kV DC to 600 V DC/480 V AC is presented. Simulation results verifying the operation of the MVDC converter are also presented.","PeriodicalId":415217,"journal":{"name":"2018 IEEE Energy Conversion Congress and Exposition (ECCE)","volume":"26 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2018-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"128670099","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 : 2018-09-01DOI: 10.1109/ECCE.2018.8557759
Faris E. Alfaris, S. Bhattacharya
Recently, the renewable photovoltaic distributed generation (PV-DG) enjoys a rapid growth globally due to the advancement in solar systems and power electronics technologies. However, the intermittent nature of solar radiation and performance of the attached power converters, inevitably poses some challenges to the power grids integrated large-scale solar-farms (SF). These challenges include frequency oscillations, voltage variation and power quality issues. To overcome these problems, this study proposes a Current-Fed quasi Z-source Inverter (CF-qZSI) as an alternative converter for distribution generation controllers to facilitate the integration of a PV energy source into a weak power system. The detailed model of the CF-qZSI-based distribution controller (CqZDC) and its control system are developed. The dynamic performance of the CqZDC device is evaluated to validate different objectives using an actual field data and RTDS simulation platform.
{"title":"Current-Fed Quasi Z-Source Inverter Based PV Distributed Generation Controller","authors":"Faris E. Alfaris, S. Bhattacharya","doi":"10.1109/ECCE.2018.8557759","DOIUrl":"https://doi.org/10.1109/ECCE.2018.8557759","url":null,"abstract":"Recently, the renewable photovoltaic distributed generation (PV-DG) enjoys a rapid growth globally due to the advancement in solar systems and power electronics technologies. However, the intermittent nature of solar radiation and performance of the attached power converters, inevitably poses some challenges to the power grids integrated large-scale solar-farms (SF). These challenges include frequency oscillations, voltage variation and power quality issues. To overcome these problems, this study proposes a Current-Fed quasi Z-source Inverter (CF-qZSI) as an alternative converter for distribution generation controllers to facilitate the integration of a PV energy source into a weak power system. The detailed model of the CF-qZSI-based distribution controller (CqZDC) and its control system are developed. The dynamic performance of the CqZDC device is evaluated to validate different objectives using an actual field data and RTDS simulation platform.","PeriodicalId":415217,"journal":{"name":"2018 IEEE Energy Conversion Congress and Exposition (ECCE)","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2018-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"128705949","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 : 2018-09-01DOI: 10.1109/ECCE.2018.8557939
P. Melín, J. Rohten, J. Guzmán, F. Hernandez, C. Baier, J. Muñoz, J. Espinoza
A Series Active Compensator based on Single-Phase Current Source Converters is studied. The proposal has two advantages; first, it requires just a first order capacitive filter on the ac side as compared to the second order LC filter needed by voltage source based topologies. As a result, sags and swells can be compensated without the hassle of oscillations at the load voltage side; second, an external control loop is added to regulate the dc current value. This technique is based on the converter modulating vector magnitude control, and it guarantees the system operation at minimum dc link current, which minimizes the conducting and commutating losses. The topology and control scheme can be extended to multi-level configurations, which makes the arrangement suitable for medium to high voltage applications using standard semiconductors. The work includes preliminary results that prove the topology and control scheme feasibility.
{"title":"Series Active Power Compensator Based on Single-Phase Current-Source Converters with Minimum DC Current Operation","authors":"P. Melín, J. Rohten, J. Guzmán, F. Hernandez, C. Baier, J. Muñoz, J. Espinoza","doi":"10.1109/ECCE.2018.8557939","DOIUrl":"https://doi.org/10.1109/ECCE.2018.8557939","url":null,"abstract":"A Series Active Compensator based on Single-Phase Current Source Converters is studied. The proposal has two advantages; first, it requires just a first order capacitive filter on the ac side as compared to the second order LC filter needed by voltage source based topologies. As a result, sags and swells can be compensated without the hassle of oscillations at the load voltage side; second, an external control loop is added to regulate the dc current value. This technique is based on the converter modulating vector magnitude control, and it guarantees the system operation at minimum dc link current, which minimizes the conducting and commutating losses. The topology and control scheme can be extended to multi-level configurations, which makes the arrangement suitable for medium to high voltage applications using standard semiconductors. The work includes preliminary results that prove the topology and control scheme feasibility.","PeriodicalId":415217,"journal":{"name":"2018 IEEE Energy Conversion Congress and Exposition (ECCE)","volume":"87 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2018-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"129340753","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 : 2018-09-01DOI: 10.1109/ECCE.2018.8557397
Yanlin Zhu, Shuhuai Shi, Feng Wang, F. Zhuo, Sheng Cheng, Hao Yi
With the increasing demand of electric energy, high voltage dc transmission (HVDC) system is supposed to be an efficient solution. Dc-dc converters play an indispensable role in the interconnection of dc systems with different voltage levels. This paper focuses on the modulation strategy of front-to-front dc-dc converter based on the modular multilevel converter (MMC). Dc-dc converters with this topology is suitable for highvoltage and high-power dc power transmission due to its modularity and reliability. On this basis, a quasi square wave phase-shift modulation strategy with voltage transformation ability is proposed to improve the performance of the modular multi-level de-de converter. The proposed modulation strategy can flexibly alter the voltage ratio while using a 1:1 ac transformer and the voltage stress of each submodule switch is controllable. Simulation results in MATLAB/Simulink validates the proposed modulation strategy.
{"title":"Quasi Square Wave Modulation With Voltage Transformation Ability Applied to Modular Multilevel DC-DC Converter","authors":"Yanlin Zhu, Shuhuai Shi, Feng Wang, F. Zhuo, Sheng Cheng, Hao Yi","doi":"10.1109/ECCE.2018.8557397","DOIUrl":"https://doi.org/10.1109/ECCE.2018.8557397","url":null,"abstract":"With the increasing demand of electric energy, high voltage dc transmission (HVDC) system is supposed to be an efficient solution. Dc-dc converters play an indispensable role in the interconnection of dc systems with different voltage levels. This paper focuses on the modulation strategy of front-to-front dc-dc converter based on the modular multilevel converter (MMC). Dc-dc converters with this topology is suitable for highvoltage and high-power dc power transmission due to its modularity and reliability. On this basis, a quasi square wave phase-shift modulation strategy with voltage transformation ability is proposed to improve the performance of the modular multi-level de-de converter. The proposed modulation strategy can flexibly alter the voltage ratio while using a 1:1 ac transformer and the voltage stress of each submodule switch is controllable. Simulation results in MATLAB/Simulink validates the proposed modulation strategy.","PeriodicalId":415217,"journal":{"name":"2018 IEEE Energy Conversion Congress and Exposition (ECCE)","volume":"71 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2018-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"129474588","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：