Pub Date : 2016-05-22DOI: 10.1109/IPEMC.2016.7512732
Ben Zhao, Ruiqing Ma, A. Abramovitz, K. Smedley
This paper introduces a bridgeless buck-boost PFC rectifier with a bi-directional switch. The bridgeless design eliminates the need for the traditional line bridge rectifier and the associated losses. The proposed PFC also employs a tapped inductor to attain low output voltage and avoid operation at extreme duty ratio. The paper presents theoretical analysis and control strategy of the proposed rectifier. The feasibility of the proposed rectifier was verified by simulation and experimental results.
{"title":"Bridgeless buck-boost PFC rectifier with a bidirectional switch","authors":"Ben Zhao, Ruiqing Ma, A. Abramovitz, K. Smedley","doi":"10.1109/IPEMC.2016.7512732","DOIUrl":"https://doi.org/10.1109/IPEMC.2016.7512732","url":null,"abstract":"This paper introduces a bridgeless buck-boost PFC rectifier with a bi-directional switch. The bridgeless design eliminates the need for the traditional line bridge rectifier and the associated losses. The proposed PFC also employs a tapped inductor to attain low output voltage and avoid operation at extreme duty ratio. The paper presents theoretical analysis and control strategy of the proposed rectifier. The feasibility of the proposed rectifier was verified by simulation and experimental results.","PeriodicalId":6857,"journal":{"name":"2016 IEEE 8th International Power Electronics and Motion Control Conference (IPEMC-ECCE Asia)","volume":"27 1","pages":"2747-2751"},"PeriodicalIF":0.0,"publicationDate":"2016-05-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"75427235","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 : 2016-05-22DOI: 10.1109/IPEMC.2016.7512630
Dezhi Dong, Dehong Xu, Mingxia Xu
In this paper, the relationship between the resonant control and repetitive control (RC) are investigated. Then through the experiment these two control methods are compared by using them in the constant-voltage constant-frequency (CVCF) inverter. Both the static and the dynamic performances are compared for the two control strategies.
{"title":"Experiment comparison of repetitive control and resonant control","authors":"Dezhi Dong, Dehong Xu, Mingxia Xu","doi":"10.1109/IPEMC.2016.7512630","DOIUrl":"https://doi.org/10.1109/IPEMC.2016.7512630","url":null,"abstract":"In this paper, the relationship between the resonant control and repetitive control (RC) are investigated. Then through the experiment these two control methods are compared by using them in the constant-voltage constant-frequency (CVCF) inverter. Both the static and the dynamic performances are compared for the two control strategies.","PeriodicalId":6857,"journal":{"name":"2016 IEEE 8th International Power Electronics and Motion Control Conference (IPEMC-ECCE Asia)","volume":"117 1","pages":"2150-2155"},"PeriodicalIF":0.0,"publicationDate":"2016-05-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"73019604","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 : 2016-05-22DOI: 10.1109/IPEMC.2016.7512830
Yi Zhang, Shaolei Shi, DianguoXu, Rongfeng Yang
Driven by the growing share of renewable energy sources that are located far from load centers, high-voltage dc (HVDC) transmission and medium-voltage dc (MVDC) distribution will be expanded in the future. DC transformer is needed to connect different dc voltage levels or different dc transmission lines in this development. Although numerous dc transformer topologies have been proposed, they do have relatively advantages and disadvantages when considering from a practical point of view, and there is not one topology that is suitable for all scenarios. Based on three different implemented scenarios, this paper provides a comprehensive review of the latest topologies, and highlights the attributes and limitations of two most promising topologies through time-domain simulations and evaluation of three different parameters in terms of transferable power, power rating of ac transformer and the number of switches.
{"title":"Comparison and review of DC transformer topologies for HVDC and DC grids","authors":"Yi Zhang, Shaolei Shi, DianguoXu, Rongfeng Yang","doi":"10.1109/IPEMC.2016.7512830","DOIUrl":"https://doi.org/10.1109/IPEMC.2016.7512830","url":null,"abstract":"Driven by the growing share of renewable energy sources that are located far from load centers, high-voltage dc (HVDC) transmission and medium-voltage dc (MVDC) distribution will be expanded in the future. DC transformer is needed to connect different dc voltage levels or different dc transmission lines in this development. Although numerous dc transformer topologies have been proposed, they do have relatively advantages and disadvantages when considering from a practical point of view, and there is not one topology that is suitable for all scenarios. Based on three different implemented scenarios, this paper provides a comprehensive review of the latest topologies, and highlights the attributes and limitations of two most promising topologies through time-domain simulations and evaluation of three different parameters in terms of transferable power, power rating of ac transformer and the number of switches.","PeriodicalId":6857,"journal":{"name":"2016 IEEE 8th International Power Electronics and Motion Control Conference (IPEMC-ECCE Asia)","volume":"17 1","pages":"3336-3343"},"PeriodicalIF":0.0,"publicationDate":"2016-05-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"73242421","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 : 2016-05-22DOI: 10.1109/IPEMC.2016.7512531
Leming Zhou, An Luo, Yandong Chen, Xiaoping Zhou, Zhiyong Chen
For single-phase LCL-type photovoltaic (PV) grid-connected system installed at the end of the grid, a novel two degrees of freedom grid current regulation (2DOFGCR) is proposed, which includes the synchronous reference frame quasi-proportional-integral (SRFQPI) controller and grid-current-feedback active damping (GCFAD) controller. The SRFQPI controller compensate reactive power quickly and regulate the instantaneous output grid current with zero steady-state errors regardless of the fluctuation range of fundamental frequency. The GCFAD controller not only damps LCL-resonance, but also improves both transient and steady-state performances. Finally, the optimized design of 2DOFGCR is proposed with the careful examinations of the system dynamic performance, stability margin and amplitude error. Simulation and experimental results verified the validity of the proposed method.
{"title":"A novel two degrees of freedom grid current regulation for single-phase LCL-type photovoltaic grid-connected inverter","authors":"Leming Zhou, An Luo, Yandong Chen, Xiaoping Zhou, Zhiyong Chen","doi":"10.1109/IPEMC.2016.7512531","DOIUrl":"https://doi.org/10.1109/IPEMC.2016.7512531","url":null,"abstract":"For single-phase LCL-type photovoltaic (PV) grid-connected system installed at the end of the grid, a novel two degrees of freedom grid current regulation (2DOFGCR) is proposed, which includes the synchronous reference frame quasi-proportional-integral (SRFQPI) controller and grid-current-feedback active damping (GCFAD) controller. The SRFQPI controller compensate reactive power quickly and regulate the instantaneous output grid current with zero steady-state errors regardless of the fluctuation range of fundamental frequency. The GCFAD controller not only damps LCL-resonance, but also improves both transient and steady-state performances. Finally, the optimized design of 2DOFGCR is proposed with the careful examinations of the system dynamic performance, stability margin and amplitude error. Simulation and experimental results verified the validity of the proposed method.","PeriodicalId":6857,"journal":{"name":"2016 IEEE 8th International Power Electronics and Motion Control Conference (IPEMC-ECCE Asia)","volume":"36 1","pages":"1596-1600"},"PeriodicalIF":0.0,"publicationDate":"2016-05-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"73581410","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 : 2016-05-22DOI: 10.1109/IPEMC.2016.7512703
C. Jiang, Qingxin Shi, Y. Tian, Xiaoyu Li, Shunfu Lin, Yu Liu
Stray voltages have always been a power quality concern to utility companies and customers. The long-term exposure to sufficient stray voltage can be harmful to human being's and animals' health. The stray voltage in the low voltage network is generally related to the load unbalance, grounding condition and network structure. Through analytical study and detailed system simulations, this paper makes a sensitivity study on how serious these factors affect the stray voltage in low voltage networks. Therefore some recommendations can be formulated to prevent the excessive stray voltage. On the other hand, this paper also provides guidance on how to identify the cause of excessive stray voltage incidence if it is detected.
{"title":"Sensitivity study on the stray voltage of low voltage residential networks","authors":"C. Jiang, Qingxin Shi, Y. Tian, Xiaoyu Li, Shunfu Lin, Yu Liu","doi":"10.1109/IPEMC.2016.7512703","DOIUrl":"https://doi.org/10.1109/IPEMC.2016.7512703","url":null,"abstract":"Stray voltages have always been a power quality concern to utility companies and customers. The long-term exposure to sufficient stray voltage can be harmful to human being's and animals' health. The stray voltage in the low voltage network is generally related to the load unbalance, grounding condition and network structure. Through analytical study and detailed system simulations, this paper makes a sensitivity study on how serious these factors affect the stray voltage in low voltage networks. Therefore some recommendations can be formulated to prevent the excessive stray voltage. On the other hand, this paper also provides guidance on how to identify the cause of excessive stray voltage incidence if it is detected.","PeriodicalId":6857,"journal":{"name":"2016 IEEE 8th International Power Electronics and Motion Control Conference (IPEMC-ECCE Asia)","volume":"18 1","pages":"2571-2576"},"PeriodicalIF":0.0,"publicationDate":"2016-05-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"74354297","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 : 2016-05-22DOI: 10.1109/IPEMC.2016.7512858
Sonia Veerapen, H. Wen
Shadowing effect occurs when a photovoltaic system does not receive the same amount of incident irradiation level throughout the system due to obstacles. In these conditions, the cells receiving a lower level of irradiance can absorb power instead of producing it. Bypass diodes are used to reduce the impact of shadowing effect and to protect the solar panel. In this paper, the shadowing effect on a panel is analyzed. A single diode solar cell model is built from datasheet values and the parameters are used to obtain the Simulink model of the panel with irradiance for each cell as a variable. Bypass diodes are used across every 10 cells in the panel and shadowing effect on this system is studied. A maximum power point tracking system using the perturb and observe algorithm and a buck converter are also added to the system. The simulation results show that the model derived is accurate. When the irradiance level is changed, the percentage increase in the maximum power point (MPP) is almost equal to the percentage increase in the incident irradiance level on the panel. Additionally, when bypass diodes are added to the system, higher values of MPP can be obtained during a partial shadow. However, they also introduce multiple local MPP into the system and this cause the maximum power point tracking (MPPT) algorithm to get stuck at a local maximum instead of the global maximum in some cases.
{"title":"Shadowing effect on the power output of a photovoltaic panel","authors":"Sonia Veerapen, H. Wen","doi":"10.1109/IPEMC.2016.7512858","DOIUrl":"https://doi.org/10.1109/IPEMC.2016.7512858","url":null,"abstract":"Shadowing effect occurs when a photovoltaic system does not receive the same amount of incident irradiation level throughout the system due to obstacles. In these conditions, the cells receiving a lower level of irradiance can absorb power instead of producing it. Bypass diodes are used to reduce the impact of shadowing effect and to protect the solar panel. In this paper, the shadowing effect on a panel is analyzed. A single diode solar cell model is built from datasheet values and the parameters are used to obtain the Simulink model of the panel with irradiance for each cell as a variable. Bypass diodes are used across every 10 cells in the panel and shadowing effect on this system is studied. A maximum power point tracking system using the perturb and observe algorithm and a buck converter are also added to the system. The simulation results show that the model derived is accurate. When the irradiance level is changed, the percentage increase in the maximum power point (MPP) is almost equal to the percentage increase in the incident irradiance level on the panel. Additionally, when bypass diodes are added to the system, higher values of MPP can be obtained during a partial shadow. However, they also introduce multiple local MPP into the system and this cause the maximum power point tracking (MPPT) algorithm to get stuck at a local maximum instead of the global maximum in some cases.","PeriodicalId":6857,"journal":{"name":"2016 IEEE 8th International Power Electronics and Motion Control Conference (IPEMC-ECCE Asia)","volume":"39 1","pages":"3508-3513"},"PeriodicalIF":0.0,"publicationDate":"2016-05-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"72627201","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}
As the back-EMF of the BLDCM is not sinusoidal, the change of back EMF in time axis dose not synchronize with the rotor position, and it's more difficulty to convert the back-EMF from time axis to space axis. This paper starts from the non-sinusoidal change law of the back-EMF of the BLDCM, and introduces the back-EMF space vector, then obtains the armature current space vector based on the equivalent principle of torque, then gains the conclusion that electromagnetic torque is direct proportion to the q axis component of the resultant current vector by normalization processing for the back-EMF space vector. So the electromagnetic torque can be controlled by the q axis component of the resultant current vector. In addition, considering that the BLDCM usually adopts half-bridge modulation method, so this paper also chooses the half-bridge modulation method which has the upcoming and outgoing phase to PWM chopper control in each sector, and realizes the decoupling control of the duty cycles of the upcoming and outgoing phase. Finally, simulations by Matlab and experiments with DSP are presented to verify the feasibility and effectiveness of the proposed strategy.
{"title":"Phase back EMF space vector oriented control of brushless DC motor for torque ripple minimization","authors":"Zhenguo Li, Xuefei Gao, Jianghao Wang, Chunjiang Zhang","doi":"10.1109/IPEMC.2016.7512702","DOIUrl":"https://doi.org/10.1109/IPEMC.2016.7512702","url":null,"abstract":"As the back-EMF of the BLDCM is not sinusoidal, the change of back EMF in time axis dose not synchronize with the rotor position, and it's more difficulty to convert the back-EMF from time axis to space axis. This paper starts from the non-sinusoidal change law of the back-EMF of the BLDCM, and introduces the back-EMF space vector, then obtains the armature current space vector based on the equivalent principle of torque, then gains the conclusion that electromagnetic torque is direct proportion to the q axis component of the resultant current vector by normalization processing for the back-EMF space vector. So the electromagnetic torque can be controlled by the q axis component of the resultant current vector. In addition, considering that the BLDCM usually adopts half-bridge modulation method, so this paper also chooses the half-bridge modulation method which has the upcoming and outgoing phase to PWM chopper control in each sector, and realizes the decoupling control of the duty cycles of the upcoming and outgoing phase. Finally, simulations by Matlab and experiments with DSP are presented to verify the feasibility and effectiveness of the proposed strategy.","PeriodicalId":6857,"journal":{"name":"2016 IEEE 8th International Power Electronics and Motion Control Conference (IPEMC-ECCE Asia)","volume":"2 1","pages":"2564-2570"},"PeriodicalIF":0.0,"publicationDate":"2016-05-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"75128108","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 : 2016-05-22DOI: 10.1109/IPEMC.2016.7512722
Jinwei He, Beihua Liang
It is found that connecting local load to DG interfacing converter output filter could cause significant resonance in grid-connected operation mode, even when the well-understood double-loop current control with well design control parameters according to the design guidelines. To overcome this limitation, a closed-loop triple-loop control algorithm is proposed in order to realize an accurate grid current harmonic compensation. It is demonstrated that the proposed method offers the interfacing converter the capability to seamlessly transfer from grid-tied to islanding operation, even when the transfer happens at a time with maximum line current or grid voltage.
{"title":"Direct microgrid harmonic current compensation and seamless operation mode transfer using coordinated triple-loop current-voltage-current controller","authors":"Jinwei He, Beihua Liang","doi":"10.1109/IPEMC.2016.7512722","DOIUrl":"https://doi.org/10.1109/IPEMC.2016.7512722","url":null,"abstract":"It is found that connecting local load to DG interfacing converter output filter could cause significant resonance in grid-connected operation mode, even when the well-understood double-loop current control with well design control parameters according to the design guidelines. To overcome this limitation, a closed-loop triple-loop control algorithm is proposed in order to realize an accurate grid current harmonic compensation. It is demonstrated that the proposed method offers the interfacing converter the capability to seamlessly transfer from grid-tied to islanding operation, even when the transfer happens at a time with maximum line current or grid voltage.","PeriodicalId":6857,"journal":{"name":"2016 IEEE 8th International Power Electronics and Motion Control Conference (IPEMC-ECCE Asia)","volume":"18 1","pages":"2690-2693"},"PeriodicalIF":0.0,"publicationDate":"2016-05-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"78034526","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 : 2016-05-22DOI: 10.1109/IPEMC.2016.7512392
Qingqing Yang, Mingyao Ma, Zhongyi Chang, Yue Fa, Zhemin Lin
Comparison of different torque control methods is presented in this paper, including current chopping control (CCC), torque sharing function (TSF) control and direct instantaneous torque control (DITC). These control methods play different roles in reducing torque ripples, increasing total output torque and getting maximum efficiency in different speed range.For example, DITC can reduce torque ripples at low speed obviously while it does not work out at high speed. TSF can reduce torque ripples efficiently at high speed but, in the meantime, it leads to total output torque decrease. CCC can output higher torque compared with previous two control methods, however its torque ripples is higher at high speed . In this paper, these three control methods are introduced and their performances are compared in terms of torque ripples and maximum output torque in order to further understand their inherent characteristics. Torque ripple-speed performance and the maximum output torque-speed performance of these control methods are obtained based on simulation results. Theoretical comparison and analysis brings us the guideline of how to select optimal control methods of SR drive system in different speed range for getting better output performance.
{"title":"Comparison of different control methods in switched reluctance drive system","authors":"Qingqing Yang, Mingyao Ma, Zhongyi Chang, Yue Fa, Zhemin Lin","doi":"10.1109/IPEMC.2016.7512392","DOIUrl":"https://doi.org/10.1109/IPEMC.2016.7512392","url":null,"abstract":"Comparison of different torque control methods is presented in this paper, including current chopping control (CCC), torque sharing function (TSF) control and direct instantaneous torque control (DITC). These control methods play different roles in reducing torque ripples, increasing total output torque and getting maximum efficiency in different speed range.For example, DITC can reduce torque ripples at low speed obviously while it does not work out at high speed. TSF can reduce torque ripples efficiently at high speed but, in the meantime, it leads to total output torque decrease. CCC can output higher torque compared with previous two control methods, however its torque ripples is higher at high speed . In this paper, these three control methods are introduced and their performances are compared in terms of torque ripples and maximum output torque in order to further understand their inherent characteristics. Torque ripple-speed performance and the maximum output torque-speed performance of these control methods are obtained based on simulation results. Theoretical comparison and analysis brings us the guideline of how to select optimal control methods of SR drive system in different speed range for getting better output performance.","PeriodicalId":6857,"journal":{"name":"2016 IEEE 8th International Power Electronics and Motion Control Conference (IPEMC-ECCE Asia)","volume":"38 1","pages":"827-831"},"PeriodicalIF":0.0,"publicationDate":"2016-05-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"79014308","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 : 2016-05-22DOI: 10.1109/IPEMC.2016.7512818
Qingsong Wang, M. Cheng, Yunlei Jiang, Zhe Chen, F. Deng, Zheng Wang
The concept of DC electric spring (DCES) was recently proposed to solve the stability issue caused by integrating intermittent renewable energy sources (RESs) to DC microgrids. In this paper, a new topology of DCES is proposed based on DC/DC converters. The proposed DCES consists of a bi-directional paralleled buck-boost converters (BBCs), a bi-directional phase-shift full-bridge converter (PSFBC) and an H-bridge circuit. Three basic operating modes of the proposed DCES can be achieved, and namely voltage boosting mode, voltage balancing mode and voltage suppression mode. Strategy of constant charging and/or constant discharging for batteries is adopted and four operating modes are analyzed as charging-positive, charging-negative, discharging-positive and discharging-negative modes. An additional mechanism for fast charging or fast discharging is also designed to secure normal operation of batteries. With the proposed DCES, the power fluctuations due to intermittent RESs can be passed to non-critical loads (NCLs) and batteries while power on critical loads (CLs) is kept stable. This is possibly the first attempt to design a DCES with only DC/DC converters. The performances of the proposed DCES are simulated, which validate the effectiveness of the proposed DCES and its control.
{"title":"DC electric springs with DC/DC converters","authors":"Qingsong Wang, M. Cheng, Yunlei Jiang, Zhe Chen, F. Deng, Zheng Wang","doi":"10.1109/IPEMC.2016.7512818","DOIUrl":"https://doi.org/10.1109/IPEMC.2016.7512818","url":null,"abstract":"The concept of DC electric spring (DCES) was recently proposed to solve the stability issue caused by integrating intermittent renewable energy sources (RESs) to DC microgrids. In this paper, a new topology of DCES is proposed based on DC/DC converters. The proposed DCES consists of a bi-directional paralleled buck-boost converters (BBCs), a bi-directional phase-shift full-bridge converter (PSFBC) and an H-bridge circuit. Three basic operating modes of the proposed DCES can be achieved, and namely voltage boosting mode, voltage balancing mode and voltage suppression mode. Strategy of constant charging and/or constant discharging for batteries is adopted and four operating modes are analyzed as charging-positive, charging-negative, discharging-positive and discharging-negative modes. An additional mechanism for fast charging or fast discharging is also designed to secure normal operation of batteries. With the proposed DCES, the power fluctuations due to intermittent RESs can be passed to non-critical loads (NCLs) and batteries while power on critical loads (CLs) is kept stable. This is possibly the first attempt to design a DCES with only DC/DC converters. The performances of the proposed DCES are simulated, which validate the effectiveness of the proposed DCES and its control.","PeriodicalId":6857,"journal":{"name":"2016 IEEE 8th International Power Electronics and Motion Control Conference (IPEMC-ECCE Asia)","volume":"18 1","pages":"3268-3273"},"PeriodicalIF":0.0,"publicationDate":"2016-05-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"79066914","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：