Pub Date : 2024-09-19DOI: 10.1109/TASC.2024.3465374
Jing Xu;Wei Xu
The development of rare earth permanent magnets has greatly enhanced the performance of permanent magnet synchronous motors in recent years. However, high-performance rare-earth PMs face challenges related to non-renewable resources and supply chain risks. Meanwhile, partial demagnetization of rare earth permanent magnets is a key issue in motor design. The aim of this paper is to optimize multilayer nanocomposite magnets and combine them with electric motors according to the needs of motor development. The properties of nanocomposite magnets with less rare earth and high theoretical magnetic energy product are analyzed by micromagnetism. The effects of soft magnetic layer thickness, hard magnetic layer orientation and temperature on the performance of nanocomposite magnets are analyzed. The microstructure design of nanocomposite magnets was carried out according to the demand of permanent magnets for motor design. The IPM machine with segmented magnetic poles is proposed. The results of the demagnetization simulation show that the no-load back electromotive force drop of this motor is reduced compared with the traditional rare earth permanent magnet synchronous motor. The anti-demagnetization reliability of the motor is improved.
{"title":"The Design of Permanent Magnet Machine With Segmented Poles Based on Nanocomposite Magnets","authors":"Jing Xu;Wei Xu","doi":"10.1109/TASC.2024.3465374","DOIUrl":"https://doi.org/10.1109/TASC.2024.3465374","url":null,"abstract":"The development of rare earth permanent magnets has greatly enhanced the performance of permanent magnet synchronous motors in recent years. However, high-performance rare-earth PMs face challenges related to non-renewable resources and supply chain risks. Meanwhile, partial demagnetization of rare earth permanent magnets is a key issue in motor design. The aim of this paper is to optimize multilayer nanocomposite magnets and combine them with electric motors according to the needs of motor development. The properties of nanocomposite magnets with less rare earth and high theoretical magnetic energy product are analyzed by micromagnetism. The effects of soft magnetic layer thickness, hard magnetic layer orientation and temperature on the performance of nanocomposite magnets are analyzed. The microstructure design of nanocomposite magnets was carried out according to the demand of permanent magnets for motor design. The IPM machine with segmented magnetic poles is proposed. The results of the demagnetization simulation show that the no-load back electromotive force drop of this motor is reduced compared with the traditional rare earth permanent magnet synchronous motor. The anti-demagnetization reliability of the motor is improved.","PeriodicalId":13104,"journal":{"name":"IEEE Transactions on Applied Superconductivity","volume":"34 8","pages":"1-5"},"PeriodicalIF":1.7,"publicationDate":"2024-09-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142377118","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"物理与天体物理","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2024-09-19DOI: 10.1109/TASC.2024.3463512
Yi Li;Zhuoheng Wu;Shaoting Zhang;Chaodan Zheng;Yanfeng Lu
Inductive power transfer (IPT) technology has the advantages of convenience and safety. The complete, reliable and excellent performance has been a hot research topic worldwide. Magnetic integration technology refers to the winding of two or more discrete magnetic elements in the same core to form a complete magnet. The magnetic integration is a promising process which integrates the magnetic elements in a single structure, allows the magnet loss, volume and net weight on a pair of cores to be reduced, thus increasing the portability and circuit performance. In this paper, we propose an IPT system with magnetic integration. Its double D round structure coils enable the absence of the compensation network at the receiver side and has an advantage on improving the misalignment performance on IPT system, meanwhile effectively reduces the weight and volume of the system, making miniaturization of the system possible and maintaining the power transmission capability.
感应式功率传输（IPT）技术具有方便、安全等优点。其完整、可靠和卓越的性能一直是世界范围内的研究热点。磁集成技术是指将两个或两个以上的分立磁性元件绕在同一个磁芯中，形成一个完整的磁体。磁集成是一种很有前途的工艺，它将磁性元件集成在一个结构中，可以减少一对磁芯的磁损、体积和净重，从而提高便携性和电路性能。在本文中，我们提出了一种具有磁性集成的 IPT 系统。其双 D 型圆形结构线圈使接收端不需要补偿网络，在改善 IPT 系统的失调性能方面具有优势，同时有效地减少了系统的重量和体积，使系统的小型化成为可能，并保持了功率传输能力。
{"title":"Design of a Wireless Power Transmission System With Magnetically Integrated Compensation Network","authors":"Yi Li;Zhuoheng Wu;Shaoting Zhang;Chaodan Zheng;Yanfeng Lu","doi":"10.1109/TASC.2024.3463512","DOIUrl":"https://doi.org/10.1109/TASC.2024.3463512","url":null,"abstract":"Inductive power transfer (IPT) technology has the advantages of convenience and safety. The complete, reliable and excellent performance has been a hot research topic worldwide. Magnetic integration technology refers to the winding of two or more discrete magnetic elements in the same core to form a complete magnet. The magnetic integration is a promising process which integrates the magnetic elements in a single structure, allows the magnet loss, volume and net weight on a pair of cores to be reduced, thus increasing the portability and circuit performance. In this paper, we propose an IPT system with magnetic integration. Its double D round structure coils enable the absence of the compensation network at the receiver side and has an advantage on improving the misalignment performance on IPT system, meanwhile effectively reduces the weight and volume of the system, making miniaturization of the system possible and maintaining the power transmission capability.","PeriodicalId":13104,"journal":{"name":"IEEE Transactions on Applied Superconductivity","volume":"34 8","pages":"1-3"},"PeriodicalIF":1.7,"publicationDate":"2024-09-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142447072","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"物理与天体物理","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
This article proposes an open-circuit fault-tolerant strategy for a dual-three-phase synchronous reluctance motor (DTP-SynRM) based on rotation coordinate transformation. A DTP-SynRM vector space decoupling model is established to achieve complete decoupling of voltage, current, and flux equations. Then, the influence of the fault state on the current and the torque fluctuations of the motor is analyzed. The proposed fault-tolerant strategy converts the second harmonic of the current through rotational coordinate transformation, thereby directly controlling the second harmonic of the current using a proportional–integral regulator in the new coordinate system. The simulation results prove the analysis and the effectiveness of the proposed strategy.
{"title":"Open-Circuit Fault-Tolerant Control for DTP-SynRM Based on Rotation Coordinate Transformation","authors":"Bingjun Li;Jibin Zou;Yongxiang Xu;Boyuan Zheng;Lijun Xiao","doi":"10.1109/TASC.2024.3465372","DOIUrl":"https://doi.org/10.1109/TASC.2024.3465372","url":null,"abstract":"This article proposes an open-circuit fault-tolerant strategy for a dual-three-phase synchronous reluctance motor (DTP-SynRM) based on rotation coordinate transformation. A DTP-SynRM vector space decoupling model is established to achieve complete decoupling of voltage, current, and flux equations. Then, the influence of the fault state on the current and the torque fluctuations of the motor is analyzed. The proposed fault-tolerant strategy converts the second harmonic of the current through rotational coordinate transformation, thereby directly controlling the second harmonic of the current using a proportional–integral regulator in the new coordinate system. The simulation results prove the analysis and the effectiveness of the proposed strategy.","PeriodicalId":13104,"journal":{"name":"IEEE Transactions on Applied Superconductivity","volume":"34 8","pages":"1-5"},"PeriodicalIF":1.7,"publicationDate":"2024-09-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142452722","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"物理与天体物理","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2024-09-19DOI: 10.1109/TASC.2024.3465380
Xin Liu;Hongyi Qu;Lingwei Meng;Chuangxin Huang;Qiuliang Wang
Blood pumps are the most important medical devices for treating heart failure. Haemolysis is an important factor affecting the performance of blood pumps. Excessive temperatures can damage red blood cells, thereby reducing blood compatibility. To solve the problem of haemolysis caused by temperature increase in an electromagnetic suspended blood pump, the influence of temperature increase in an electromagnetic suspended blood pump motor was studied. First, an electromagnetic levitation blood pump model and a mathematical model of the temperature field were established. Subsequently, the influences of two key factors (stator winding phase resistance and blood pump speed) on the overall temperature increase of the electromagnetic levitation blood pump were explored. Finally, based on the law of temperature increase, a temperature optimisation scheme for the motor of an electromagnetic levitation blood pump was proposed. The results show that, on the one hand, the temperature rise of the electromagnetic levitation blood pump can be effectively reduced by properly reducing the stator winding phase resistance and rotating speed. Conversely, optimising commutation and controllers can further reduce the temperature rise. This method can be used as a guide for the optimal design of blood pumps.
{"title":"Optimization of Hemolytic Performance for Blood Pump Based on Temperature Field Analysis and Three Control Strategies","authors":"Xin Liu;Hongyi Qu;Lingwei Meng;Chuangxin Huang;Qiuliang Wang","doi":"10.1109/TASC.2024.3465380","DOIUrl":"https://doi.org/10.1109/TASC.2024.3465380","url":null,"abstract":"Blood pumps are the most important medical devices for treating heart failure. Haemolysis is an important factor affecting the performance of blood pumps. Excessive temperatures can damage red blood cells, thereby reducing blood compatibility. To solve the problem of haemolysis caused by temperature increase in an electromagnetic suspended blood pump, the influence of temperature increase in an electromagnetic suspended blood pump motor was studied. First, an electromagnetic levitation blood pump model and a mathematical model of the temperature field were established. Subsequently, the influences of two key factors (stator winding phase resistance and blood pump speed) on the overall temperature increase of the electromagnetic levitation blood pump were explored. Finally, based on the law of temperature increase, a temperature optimisation scheme for the motor of an electromagnetic levitation blood pump was proposed. The results show that, on the one hand, the temperature rise of the electromagnetic levitation blood pump can be effectively reduced by properly reducing the stator winding phase resistance and rotating speed. Conversely, optimising commutation and controllers can further reduce the temperature rise. This method can be used as a guide for the optimal design of blood pumps.","PeriodicalId":13104,"journal":{"name":"IEEE Transactions on Applied Superconductivity","volume":"34 8","pages":"1-4"},"PeriodicalIF":1.7,"publicationDate":"2024-09-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142368342","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"物理与天体物理","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2024-09-18DOI: 10.1109/TASC.2024.3463511
Md. Sanwar Hossain;Md. Rabiul Islam;Danny Sutanto;Kashem M. Muttaqi
Solid-state transformers (SSTs) are becoming an indispensable component of power systems due to their multifunctionality, flexibility, and controllability over conventional transformers. With the development of advanced magnetic materials, semiconductor devices, and control circuits high-frequency magnetic core (HFMC) can play a significant role in the solid-state transformer. To ensure high efficiency, power density, and reliability, the HFMC must be carefully chosen, designed, modelled, and used. However, due to its complex physical geometry, use of non-sinusoidal excitation, and nonlinear features, achieving optimal performance has always been regarded as a challenging task. This article aims to review the state-of-the-art of HFMC considering the recent development of advanced soft magnetic materials and switching devices and core geometry and windings requirements in medium-voltage solid-state transformer applications. Finally, this article outlines the key challenges and suggests the future improvement of HFMC and HFMC-based SSTs.
{"title":"Advanced Soft Magnetic Materials for the Development of High-Frequency Magnetic Core Used in Solid-State Transformers","authors":"Md. Sanwar Hossain;Md. Rabiul Islam;Danny Sutanto;Kashem M. Muttaqi","doi":"10.1109/TASC.2024.3463511","DOIUrl":"10.1109/TASC.2024.3463511","url":null,"abstract":"Solid-state transformers (SSTs) are becoming an indispensable component of power systems due to their multifunctionality, flexibility, and controllability over conventional transformers. With the development of advanced magnetic materials, semiconductor devices, and control circuits high-frequency magnetic core (HFMC) can play a significant role in the solid-state transformer. To ensure high efficiency, power density, and reliability, the HFMC must be carefully chosen, designed, modelled, and used. However, due to its complex physical geometry, use of non-sinusoidal excitation, and nonlinear features, achieving optimal performance has always been regarded as a challenging task. This article aims to review the state-of-the-art of HFMC considering the recent development of advanced soft magnetic materials and switching devices and core geometry and windings requirements in medium-voltage solid-state transformer applications. Finally, this article outlines the key challenges and suggests the future improvement of HFMC and HFMC-based SSTs.","PeriodicalId":13104,"journal":{"name":"IEEE Transactions on Applied Superconductivity","volume":"34 8","pages":"1-5"},"PeriodicalIF":1.7,"publicationDate":"2024-09-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142252632","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"物理与天体物理","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Quench propagation characteristics are the key issue for high temperature superconductor (HTS) cables and magnets. In this work, the effect of magnetic field on minimum quench energy (MQE) and the normal zone propagation velocity (NZPV) of two types of HTS tapes, including Bi-2223 and REBCO, are studied by experimental method in 77 K, respectively. The equivalent heat capacity of the two tapes was used to evaluate the MQE property. The experimental results show that the MQE of HTS tape is sensitive to the magnetic field, whereas the NZPV of HTS tape shows less sensitivity to the magnetic field. Although the volume heat capacity of REBCO tape and Bi-2223 tape is similar, the equivalent heat capacity of samples shows a higher difference and leads to the lower MQE for REBCO tape. It is also shown that the NZPV of Bi-2223 tape is smaller than that of REBCO tape.
{"title":"Effect of Background Magnetic Field on Quench Properties in REBCO and Bi-2223 Tapes","authors":"Tian Qiu;Yunpeng Zhu;Xinsheng Yang;Xinbo Hu;Jian Liu;Lijun Cai;Jing Jiang;Shengnan Zhang;Yunfei Tan;Yong Zhao","doi":"10.1109/TASC.2024.3463254","DOIUrl":"10.1109/TASC.2024.3463254","url":null,"abstract":"Quench propagation characteristics are the key issue for high temperature superconductor (HTS) cables and magnets. In this work, the effect of magnetic field on minimum quench energy (MQE) and the normal zone propagation velocity (NZPV) of two types of HTS tapes, including Bi-2223 and REBCO, are studied by experimental method in 77 K, respectively. The equivalent heat capacity of the two tapes was used to evaluate the MQE property. The experimental results show that the MQE of HTS tape is sensitive to the magnetic field, whereas the NZPV of HTS tape shows less sensitivity to the magnetic field. Although the volume heat capacity of REBCO tape and Bi-2223 tape is similar, the equivalent heat capacity of samples shows a higher difference and leads to the lower MQE for REBCO tape. It is also shown that the NZPV of Bi-2223 tape is smaller than that of REBCO tape.","PeriodicalId":13104,"journal":{"name":"IEEE Transactions on Applied Superconductivity","volume":"34 8","pages":"1-4"},"PeriodicalIF":1.7,"publicationDate":"2024-09-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142252634","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"物理与天体物理","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2024-09-18DOI: 10.1109/TASC.2024.3463260
Lin Liu;Youguang Guo;Gang Lei;Jianguo Zhu
The loss performance of interior permanent magnet synchronous motors (IPMSMs), commonly employed in electric drive systems of electric vehicles (EVs), is notably influenced by temperature fluctuations and harmonics in the supply current, because the magnetic properties of silicon steel sheets are easily vulnerable to these factors. Therefore, in this paper, an advanced experimental setup is utilized to quantify the AC loss of silicon steel samples under rotating magnetic fields. Then, an enhanced analytical estimation model of the iron loss in IPMSMs is formulated by incorporating experimentally-fitted coefficients for hysteresis and eddy current losses, allowing for a comprehensive consideration of temperature variations and harmonics. Given that several calculation methods demonstrated satisfactory accuracy, when relying solely on the no-load iron loss, the efficacy of the proposed model is validated through loaded experiments. Moreover, comparative results verify the improved accuracy and computational simplicity of the presented model, even under the dynamic drive cycle conditions of EVs. The proposed tester and approaches can also be applied to the design optimization of electric motors with high-temperature superconducting (HTS) materials.
{"title":"Efficient Iron Loss Estimation of Interior PMSMs in Electric Vehicles: Analytical Modelling and Experimental Validation","authors":"Lin Liu;Youguang Guo;Gang Lei;Jianguo Zhu","doi":"10.1109/TASC.2024.3463260","DOIUrl":"10.1109/TASC.2024.3463260","url":null,"abstract":"The loss performance of interior permanent magnet synchronous motors (IPMSMs), commonly employed in electric drive systems of electric vehicles (EVs), is notably influenced by temperature fluctuations and harmonics in the supply current, because the magnetic properties of silicon steel sheets are easily vulnerable to these factors. Therefore, in this paper, an advanced experimental setup is utilized to quantify the AC loss of silicon steel samples under rotating magnetic fields. Then, an enhanced analytical estimation model of the iron loss in IPMSMs is formulated by incorporating experimentally-fitted coefficients for hysteresis and eddy current losses, allowing for a comprehensive consideration of temperature variations and harmonics. Given that several calculation methods demonstrated satisfactory accuracy, when relying solely on the no-load iron loss, the efficacy of the proposed model is validated through loaded experiments. Moreover, comparative results verify the improved accuracy and computational simplicity of the presented model, even under the dynamic drive cycle conditions of EVs. The proposed tester and approaches can also be applied to the design optimization of electric motors with high-temperature superconducting (HTS) materials.","PeriodicalId":13104,"journal":{"name":"IEEE Transactions on Applied Superconductivity","volume":"34 8","pages":"1-5"},"PeriodicalIF":1.7,"publicationDate":"2024-09-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142252635","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"物理与天体物理","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Grid forming control (GFM) based wind farms can support the safe and stable operation of power systems dominated by renewable energy. However, GFM based Doubly Fed Induction Generators (DFIGs) have difficulties in riding through serious voltage faults. And their grid forming ability is restricted by the power reserve and capacity of the converter. This paper proposes a reconfigured converter architecture for DFIG with SMES integrated into its DC bus. During normal operation, DFIG adopts the GFM strategy for primary frequency regulation. If the frequency modulation capacity of DFIG is inadequate, SMES outputs active power through an energy storage side converter (ESC) to keep the frequency within the specified safety range. When voltage faults occur, SMES outputs dynamic reactive current to support voltage recovery through ESC. The simulation results show that the proposed architecture and strategy can effectively enhance the GFM and voltage ride-through capability of DFIG.
{"title":"SMES Based Reconfigured Converter Architecture for DFIG to Enhance FRT and Grid Forming Capability","authors":"Donghui Song;Zixuan Zheng;Jie Ren;Changsong Li;Qi Xie","doi":"10.1109/TASC.2024.3463257","DOIUrl":"10.1109/TASC.2024.3463257","url":null,"abstract":"Grid forming control (GFM) based wind farms can support the safe and stable operation of power systems dominated by renewable energy. However, GFM based Doubly Fed Induction Generators (DFIGs) have difficulties in riding through serious voltage faults. And their grid forming ability is restricted by the power reserve and capacity of the converter. This paper proposes a reconfigured converter architecture for DFIG with SMES integrated into its DC bus. During normal operation, DFIG adopts the GFM strategy for primary frequency regulation. If the frequency modulation capacity of DFIG is inadequate, SMES outputs active power through an energy storage side converter (ESC) to keep the frequency within the specified safety range. When voltage faults occur, SMES outputs dynamic reactive current to support voltage recovery through ESC. The simulation results show that the proposed architecture and strategy can effectively enhance the GFM and voltage ride-through capability of DFIG.","PeriodicalId":13104,"journal":{"name":"IEEE Transactions on Applied Superconductivity","volume":"34 8","pages":"1-5"},"PeriodicalIF":1.7,"publicationDate":"2024-09-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142252637","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"物理与天体物理","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2024-09-18DOI: 10.1109/TASC.2024.3463514
Shahriar Hossain;Shuvra Prokash Biswas;Sudipto Mondal;Joysree Nath;Md. Rabiul Islam;Rakibuzzaman Shah
Multilevel inverters (MLIs) have significantly improved the overall performance, dependability and efficiency of the renewable energy system. Moreover, these can be easily integrated with the superconducting magnetic energy storage (SMES) systems. Maintaining the power qualities of these MLIs is always marked as a major research concern which can be heavily impacted by the pulse width modulation (PWM) strategies. An improved voltage balancing discontinuous PWM (DPWM) scheme is suggested in this work for the single-phase grid-tied 5-level neutral point clamped (NPC) inverter, which can significantly mitigate the fluctuation of the dc-link capacitor voltages as well as the switching losses of the power IGBTs. The reduction in switching losses will give lower thermal stress to the power devices. The proposed DPWM scheme is compared with other existing DPWM schemes for proving its effectiveness. The simulation of the entire system is performed by using MATLAB Simulink and PLECS simulation platform. A lower scale prototype is also constructed in the laboratory.
{"title":"Advanced Voltage Balancing Discontinuous PWM Technique for Solar PV Fed Grid-Tied NPC Inverters","authors":"Shahriar Hossain;Shuvra Prokash Biswas;Sudipto Mondal;Joysree Nath;Md. Rabiul Islam;Rakibuzzaman Shah","doi":"10.1109/TASC.2024.3463514","DOIUrl":"10.1109/TASC.2024.3463514","url":null,"abstract":"Multilevel inverters (MLIs) have significantly improved the overall performance, dependability and efficiency of the renewable energy system. Moreover, these can be easily integrated with the superconducting magnetic energy storage (SMES) systems. Maintaining the power qualities of these MLIs is always marked as a major research concern which can be heavily impacted by the pulse width modulation (PWM) strategies. An improved voltage balancing discontinuous PWM (DPWM) scheme is suggested in this work for the single-phase grid-tied 5-level neutral point clamped (NPC) inverter, which can significantly mitigate the fluctuation of the dc-link capacitor voltages as well as the switching losses of the power IGBTs. The reduction in switching losses will give lower thermal stress to the power devices. The proposed DPWM scheme is compared with other existing DPWM schemes for proving its effectiveness. The simulation of the entire system is performed by using MATLAB Simulink and PLECS simulation platform. A lower scale prototype is also constructed in the laboratory.","PeriodicalId":13104,"journal":{"name":"IEEE Transactions on Applied Superconductivity","volume":"34 8","pages":"1-5"},"PeriodicalIF":1.7,"publicationDate":"2024-09-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142268670","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"物理与天体物理","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2024-09-18DOI: 10.1109/TASC.2024.3463258
Lei Chen;Xuefeng Qiao;Man Yang;Jiahui Zhu;Shencong Zheng;Jingguang Tang;Hongkun Chen
This paper studies a hybrid energy storage system (HESS) incorporating battery and superconducting magnetic energy storage (SMES) for the robustness increase of a solid-state transformer (SST), which conducts the voltage conversion and power exchange between different power networks. Firstly, the topological structure and control mode of the SST are stated. Then, to address the SST's voltage stability issue caused by power disturbances, a fuzzy control scheme is presented to adjust the power response of the HESS. Based on the differences in power time scale and charge/discharge behaviors, the proper power allocation law is obtained for the SMES and the battery. In addition, a schematic design of a 10 H/200 A SMES magnet is implemented. The parameters of the HTS magnet, encompassing critical current level, tape length, and magnetic field strength, are refined. Using the MATLAB platform, the performance validation of the SMES-battery in a 10 kV/ 1 kV SST is done. The simulation results affirm the credibility of the SMES-battery in maintaining the power balance and boosting the bus voltage stability of the SST under varying degrees of disturbance. The voltage fluctuations in the DC bus are effectively limited, and the DC voltage promptly returns to a steady state, while the state of charge (SoC) of the SMES-battery is within favorable levels.
{"title":"Investigation of SMES-Battery Hybrid Energy Storage System for Robustness Enhancement of Solid-State Transformer","authors":"Lei Chen;Xuefeng Qiao;Man Yang;Jiahui Zhu;Shencong Zheng;Jingguang Tang;Hongkun Chen","doi":"10.1109/TASC.2024.3463258","DOIUrl":"10.1109/TASC.2024.3463258","url":null,"abstract":"This paper studies a hybrid energy storage system (HESS) incorporating battery and superconducting magnetic energy storage (SMES) for the robustness increase of a solid-state transformer (SST), which conducts the voltage conversion and power exchange between different power networks. Firstly, the topological structure and control mode of the SST are stated. Then, to address the SST's voltage stability issue caused by power disturbances, a fuzzy control scheme is presented to adjust the power response of the HESS. Based on the differences in power time scale and charge/discharge behaviors, the proper power allocation law is obtained for the SMES and the battery. In addition, a schematic design of a 10 H/200 A SMES magnet is implemented. The parameters of the HTS magnet, encompassing critical current level, tape length, and magnetic field strength, are refined. Using the MATLAB platform, the performance validation of the SMES-battery in a 10 kV/ 1 kV SST is done. The simulation results affirm the credibility of the SMES-battery in maintaining the power balance and boosting the bus voltage stability of the SST under varying degrees of disturbance. The voltage fluctuations in the DC bus are effectively limited, and the DC voltage promptly returns to a steady state, while the state of charge (SoC) of the SMES-battery is within favorable levels.","PeriodicalId":13104,"journal":{"name":"IEEE Transactions on Applied Superconductivity","volume":"34 8","pages":"1-6"},"PeriodicalIF":1.7,"publicationDate":"2024-09-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142252633","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"物理与天体物理","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：