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Single-Step Commutation Method for Three-Phase to Single-Phase Matrix Converter 三相到单相矩阵变换器的单步换相方法
2018 IEEE Energy Conversion Congress and Exposition (ECCE) Pub Date : 2018-09-01 DOI: 10.1109/ECCE.2018.8558384
Shunsuke Takuma, K. Kusaka, J. Itoh
{"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}
引用次数: 0
Structure and Implementation of a Hybrid 48V/380V DC UPS for IT Datacenters IT数据中心48V/380V混合直流UPS的结构与实现
2018 IEEE Energy Conversion Congress and Exposition (ECCE) Pub Date : 2018-09-01 DOI: 10.1109/ECCE.2018.8557425
S. Pan, Cong Wang, P. Jain
{"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}
引用次数: 2
Analysis and Design of Position and Velocity Estimation Scheme for PM Servo Motor Drive with Binary Hall Sensors 二元霍尔传感器永磁伺服电机位置速度估计方案的分析与设计
2018 IEEE Energy Conversion Congress and Exposition (ECCE) Pub Date : 2018-09-01 DOI: 10.1109/ECCE.2018.8558123
Oinan Ni, Ming Yang, S. Odhano, P. Zanchetta, Xiaosheng Liu, Dianguo Xu
{"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}
引用次数: 3
Torque and Speed Response Differences Between Deadbeat-Direct Torque and Flux Control and Indirect Field Oriented Control for Induction Machine Drives 转矩和速度响应差异:感应电机传动的直接转矩和磁链控制与间接磁场定向控制
2018 IEEE Energy Conversion Congress and Exposition (ECCE) Pub Date : 2018-09-01 DOI: 10.1109/ECCE.2018.8557888
Kang Wang, R. Lorenz, Noor Aamir Baloch
{"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}
引用次数: 0
Design and Control Method for Synchronous Permanent Magnet Motor Drive System with Series Capacitor 串联电容同步永磁电机驱动系统的设计与控制方法
2018 IEEE Energy Conversion Congress and Exposition (ECCE) Pub Date : 2018-09-01 DOI: 10.1109/ECCE.2018.8557409
Hyeon-gyu Choi, Jung-Ik Ha
{"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}
引用次数: 5
Modelling and Control to Mitigate Dynamic Effects of Unbalanced Masses in Wind Turbine Systems 风力发电系统不平衡质量动态影响的建模与控制
2018 IEEE Energy Conversion Congress and Exposition (ECCE) Pub Date : 2018-09-01 DOI: 10.1109/ECCE.2018.8557921
Jishnu Kavil Kambrath, Yoon Changwoo, Youyi Wang, Y. Yoon
{"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}
引用次数: 0
Modular Universal Converter for MVDC Applications MVDC应用的模块化通用变换器
2018 IEEE Energy Conversion Congress and Exposition (ECCE) Pub Date : 2018-09-01 DOI: 10.1109/ECCE.2018.8558291
Liran Zheng, Xiangyu Han, Z. An, R. Kandula, K. Kandasamy, M. Saeedifard, D. Divan
{"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}
引用次数: 29
Current-Fed Quasi Z-Source Inverter Based PV Distributed Generation Controller 基于电流馈电准z源逆变器的光伏分布式发电控制器
2018 IEEE Energy Conversion Congress and Exposition (ECCE) Pub Date : 2018-09-01 DOI: 10.1109/ECCE.2018.8557759
Faris E. Alfaris, S. Bhattacharya
{"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}
引用次数: 0
Series Active Power Compensator Based on Single-Phase Current-Source Converters with Minimum DC Current Operation 基于最小直流电流工作的单相电流源变换器串联有源功率补偿器
2018 IEEE Energy Conversion Congress and Exposition (ECCE) Pub Date : 2018-09-01 DOI: 10.1109/ECCE.2018.8557939
P. Melín, J. Rohten, J. Guzmán, F. Hernandez, C. Baier, J. Muñoz, J. Espinoza
{"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}
引用次数: 0
Quasi Square Wave Modulation With Voltage Transformation Ability Applied to Modular Multilevel DC-DC Converter 具有电压变换能力的准方波调制在模块化多电平DC-DC变换器中的应用
2018 IEEE Energy Conversion Congress and Exposition (ECCE) Pub Date : 2018-09-01 DOI: 10.1109/ECCE.2018.8557397
Yanlin Zhu, Shuhuai Shi, Feng Wang, F. Zhuo, Sheng Cheng, Hao Yi
{"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}
引用次数: 4
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