Pub Date : 2021-06-14DOI: 10.1109/APEC42165.2021.9487241
Jian Liu, L. Ravi, D. Dong, R. Burgos, C. Buttay, S. Schmalz
Circuit protection is a key enabler for future medium-voltage direct-current (MVDC) distribution systems. Hybrid dc circuit breaker (HCB) offers low conduction losses and reasonably fast response times, but suffers from large size. In this paper, a high power density power electronic interrupter design is introduced for the HCB. The device selection and trade-off analysis of voltage clamping circuit are investigated. A small sized module with two parallel 1.7 kV discrete IGBTs are selected as main switches. The RC snubber and MOV are carefully designed to guarantee no tail current bump and sufficient turn-off voltage margin. Experimental results at 12 kV and 1 kA are provided to verify the operation of the prototype.
{"title":"High Power Density Design of Power Electronic Interrupter in Hybrid DC Circuit Breaker","authors":"Jian Liu, L. Ravi, D. Dong, R. Burgos, C. Buttay, S. Schmalz","doi":"10.1109/APEC42165.2021.9487241","DOIUrl":"https://doi.org/10.1109/APEC42165.2021.9487241","url":null,"abstract":"Circuit protection is a key enabler for future medium-voltage direct-current (MVDC) distribution systems. Hybrid dc circuit breaker (HCB) offers low conduction losses and reasonably fast response times, but suffers from large size. In this paper, a high power density power electronic interrupter design is introduced for the HCB. The device selection and trade-off analysis of voltage clamping circuit are investigated. A small sized module with two parallel 1.7 kV discrete IGBTs are selected as main switches. The RC snubber and MOV are carefully designed to guarantee no tail current bump and sufficient turn-off voltage margin. Experimental results at 12 kV and 1 kA are provided to verify the operation of the prototype.","PeriodicalId":7050,"journal":{"name":"2021 IEEE Applied Power Electronics Conference and Exposition (APEC)","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2021-06-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"74318450","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 : 2021-06-14DOI: 10.1109/APEC42165.2021.9487197
Shuang Zhao, A. Kempitiya, Wibawa Chou, V. Palija
Application of wide bandgap power devices enables the power electronics system to achieve higher efficiency, improved power density and reduced weight. Wide range LLC converters are extensively applied in various application scenarios such as electric vehicle on-board charger and renewable energy generation due to their intrinsic zero voltage switching features and simple control implementation. In this paper, the design process of a high-frequency wide-range LLC resonant DC/DC converter using wide bandgap (WBG) devices is demonstrated in details. To broaden the operation range, linear feedback variable DC-link voltage control is utilized. The power loss model of the system is introduced and validated via simulation study. A 3.7 kW and 500 kHz experimental prototype is built with WBG devices. The experimental results reveal that peak power efficiency of the system can reach 98.4% with the variable DC-link voltage control while that of the conventional constant DC-link voltage control is 97.6%.
{"title":"Variable DC-Link Voltage LLC Resonant DC/DC Converter Using Wide Band Gap Semiconductor Devices","authors":"Shuang Zhao, A. Kempitiya, Wibawa Chou, V. Palija","doi":"10.1109/APEC42165.2021.9487197","DOIUrl":"https://doi.org/10.1109/APEC42165.2021.9487197","url":null,"abstract":"Application of wide bandgap power devices enables the power electronics system to achieve higher efficiency, improved power density and reduced weight. Wide range LLC converters are extensively applied in various application scenarios such as electric vehicle on-board charger and renewable energy generation due to their intrinsic zero voltage switching features and simple control implementation. In this paper, the design process of a high-frequency wide-range LLC resonant DC/DC converter using wide bandgap (WBG) devices is demonstrated in details. To broaden the operation range, linear feedback variable DC-link voltage control is utilized. The power loss model of the system is introduced and validated via simulation study. A 3.7 kW and 500 kHz experimental prototype is built with WBG devices. The experimental results reveal that peak power efficiency of the system can reach 98.4% with the variable DC-link voltage control while that of the conventional constant DC-link voltage control is 97.6%.","PeriodicalId":7050,"journal":{"name":"2021 IEEE Applied Power Electronics Conference and Exposition (APEC)","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2021-06-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"75798638","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 : 2021-06-14DOI: 10.1109/APEC42165.2021.9487336
Yong-Long Syu, Zitao Liao, Ni-Ting Fu, Yu-Chen Liu, H. Chiu, R. Pilawa-Podgurski
Three-phase rectifiers with Power Factor Correction (PFC) at kilowatt levels are widely used in applications such as electric vehicle (EV) charging and data center power delivery and so on. The Flying-Capacitor Multilevel (FCML) converter has great potential to improve the performance of three-phase rectifiers due to the smaller required inductance and the use of high-energy-density [] ceramic capacitors. While high performance single-phase ac-dc FCMLs have been demonstrated, three-phase FCMLs with PFC function have unique characteristics and challenges, which are addressed in this work through the hardware and control design of a high performance three-phase FCML PFC rectifier, which has been tested up to 6.1 kW, 208 Vac to 400 Vdc, achieving peak efficiency of 98.5% and effective inductor switching frequency of 1 MHz.
{"title":"Design and Control of A High Power Density Three-Phase Flying Capacitor Multilevel Power Factor Correction Rectifier","authors":"Yong-Long Syu, Zitao Liao, Ni-Ting Fu, Yu-Chen Liu, H. Chiu, R. Pilawa-Podgurski","doi":"10.1109/APEC42165.2021.9487336","DOIUrl":"https://doi.org/10.1109/APEC42165.2021.9487336","url":null,"abstract":"Three-phase rectifiers with Power Factor Correction (PFC) at kilowatt levels are widely used in applications such as electric vehicle (EV) charging and data center power delivery and so on. The Flying-Capacitor Multilevel (FCML) converter has great potential to improve the performance of three-phase rectifiers due to the smaller required inductance and the use of high-energy-density [] ceramic capacitors. While high performance single-phase ac-dc FCMLs have been demonstrated, three-phase FCMLs with PFC function have unique characteristics and challenges, which are addressed in this work through the hardware and control design of a high performance three-phase FCML PFC rectifier, which has been tested up to 6.1 kW, 208 Vac to 400 Vdc, achieving peak efficiency of 98.5% and effective inductor switching frequency of 1 MHz.","PeriodicalId":7050,"journal":{"name":"2021 IEEE Applied Power Electronics Conference and Exposition (APEC)","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2021-06-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"72950728","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 : 2021-06-14DOI: 10.1109/APEC42165.2021.9487333
Richard Yue Sun, Samuel Webb, Yanfei Liu, P. Sen
The switched-capacitor converter (SCC) topology has been gaining attention in recent years because of their advantages of higher power density, switch utilization, and reduced component stress compared to existing converter topologies. However, SCCs have a major drawback in which capacitor charge redistribution results in significant current spikes. One method of addressing charge redistribution is split-phase operation, which accomplishes this by imposing voltage control on the SCC’s flying capacitors. However, an important design consideration was identified regarding the implementation of the split-phase Dickson SCC in high-current applications. Mismatched flying capacitors exhibit uneven charge rates, resulting in incomplete elimination of charge redistribution by split-phase control. This paper presents a discussion of the effects of mismatched flying capacitors on the operation of the split-phase Dickson SCC. Furthermore, design processes and test results of a prototype high-current split-phase Dickson SCC will be presented.
{"title":"Optimization and Design of a 48-to-12 V, 35 A Split-Phase Dickson Switched-Capacitor Converter","authors":"Richard Yue Sun, Samuel Webb, Yanfei Liu, P. Sen","doi":"10.1109/APEC42165.2021.9487333","DOIUrl":"https://doi.org/10.1109/APEC42165.2021.9487333","url":null,"abstract":"The switched-capacitor converter (SCC) topology has been gaining attention in recent years because of their advantages of higher power density, switch utilization, and reduced component stress compared to existing converter topologies. However, SCCs have a major drawback in which capacitor charge redistribution results in significant current spikes. One method of addressing charge redistribution is split-phase operation, which accomplishes this by imposing voltage control on the SCC’s flying capacitors. However, an important design consideration was identified regarding the implementation of the split-phase Dickson SCC in high-current applications. Mismatched flying capacitors exhibit uneven charge rates, resulting in incomplete elimination of charge redistribution by split-phase control. This paper presents a discussion of the effects of mismatched flying capacitors on the operation of the split-phase Dickson SCC. Furthermore, design processes and test results of a prototype high-current split-phase Dickson SCC will be presented.","PeriodicalId":7050,"journal":{"name":"2021 IEEE Applied Power Electronics Conference and Exposition (APEC)","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2021-06-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"75529996","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 : 2021-06-14DOI: 10.1109/APEC42165.2021.9487467
Ahmed Nabih, Feng Jin, Qiang Li, F. Lee
The bi-directional five-element CLLC resonant converter is attracting great attention for battery charger applications. The three-phase interleaved CLLC converter can deliver more power with lower conduction losses as compared to the single-phase CLLC. Resonant converters, including the three-phase interleaved CLLC, suffer from high levels of inrush current during startup as well as short circuiting. A proper soft startup needs to be implemented to limit the resonant current during startup. This paper discusses the soft start-up of single-phase and three-phase interleaved CLLC converters based on state trajectory control. The state trajectory of the CLLC primary resonant tank is simplified and treated like an LLC. Optimal trajectory analysis during startup is implemented to limit the resonant tank and to achieve a fast startup. The three-phase interleaved CLLC is reduced to the full-bridge CLLC for easier analysis and control, then is switched back to three-phase interleaved operation after a successful soft startup. Experimental results are provided for a 12kW 500kHz 850V CLLC converter using digital MCU F28379D.
{"title":"Soft Start-up of Three Phase CLLC Converter Based on State Trajectory Control","authors":"Ahmed Nabih, Feng Jin, Qiang Li, F. Lee","doi":"10.1109/APEC42165.2021.9487467","DOIUrl":"https://doi.org/10.1109/APEC42165.2021.9487467","url":null,"abstract":"The bi-directional five-element CLLC resonant converter is attracting great attention for battery charger applications. The three-phase interleaved CLLC converter can deliver more power with lower conduction losses as compared to the single-phase CLLC. Resonant converters, including the three-phase interleaved CLLC, suffer from high levels of inrush current during startup as well as short circuiting. A proper soft startup needs to be implemented to limit the resonant current during startup. This paper discusses the soft start-up of single-phase and three-phase interleaved CLLC converters based on state trajectory control. The state trajectory of the CLLC primary resonant tank is simplified and treated like an LLC. Optimal trajectory analysis during startup is implemented to limit the resonant tank and to achieve a fast startup. The three-phase interleaved CLLC is reduced to the full-bridge CLLC for easier analysis and control, then is switched back to three-phase interleaved operation after a successful soft startup. Experimental results are provided for a 12kW 500kHz 850V CLLC converter using digital MCU F28379D.","PeriodicalId":7050,"journal":{"name":"2021 IEEE Applied Power Electronics Conference and Exposition (APEC)","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2021-06-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"73718777","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 : 2021-06-14DOI: 10.1109/APEC42165.2021.9487246
Anmol Sharma, G. Thiele, J. Kirchner, T. Keller, Manuel Wiersch
This paper discusses several challenges in the design of non-inverting buck-boost regulators. These range from the design of control loop to operation in various regions and associated issues. Several novel schemes are introduced like a universal timer which could work in all the regions of buck-boost, an adaptive region detector which provides optimum point of region-transition independent of input and output voltage measurements or load current and a simple state machine controlled trapezoidal regulation which enables efficient switching. These enable a peak current mode control with adaptive off-time to be maintained throughout all the regions preventing control loop discontinuities. All the ideas presented here are realized on a silicon integrated circuit. Subsequently these concepts are validated and proven through rigorous LAB analysis leading to a commercially usable product which generates adjustable outputs in the range of 1.8V to 5.2V from input voltages in the range of 1.3V to 5.5V.
{"title":"Challenges and Solutions for Non-Inverting Buck-Boost Converters","authors":"Anmol Sharma, G. Thiele, J. Kirchner, T. Keller, Manuel Wiersch","doi":"10.1109/APEC42165.2021.9487246","DOIUrl":"https://doi.org/10.1109/APEC42165.2021.9487246","url":null,"abstract":"This paper discusses several challenges in the design of non-inverting buck-boost regulators. These range from the design of control loop to operation in various regions and associated issues. Several novel schemes are introduced like a universal timer which could work in all the regions of buck-boost, an adaptive region detector which provides optimum point of region-transition independent of input and output voltage measurements or load current and a simple state machine controlled trapezoidal regulation which enables efficient switching. These enable a peak current mode control with adaptive off-time to be maintained throughout all the regions preventing control loop discontinuities. All the ideas presented here are realized on a silicon integrated circuit. Subsequently these concepts are validated and proven through rigorous LAB analysis leading to a commercially usable product which generates adjustable outputs in the range of 1.8V to 5.2V from input voltages in the range of 1.3V to 5.5V.","PeriodicalId":7050,"journal":{"name":"2021 IEEE Applied Power Electronics Conference and Exposition (APEC)","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2021-06-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"72569760","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 : 2021-06-14DOI: 10.1109/APEC42165.2021.9487446
F. Carastro, Zheng Chen, Alexander Streibel, O. Muehlfeld
This paper introduces the Danfoss DCM1000X power module technology platform, which is developed to meet the harshest requirements of automotive traction inverters, and optimized to fully unleash the capabilities of latest silicon carbide (SiC) power switches. Advanced packaging technologies unique to Danfoss, such as Danfoss Bond Buffer® (DBB®) and ShowerPower® 3D (SP3D®), have been implemented to embrace the cooling and thermo-mechanical challenges in electric vehicle drivetrains. The three-DC-terminal design, and the symmetrical and optimized internal layout, minimize the power loop inductance, and ensure balanced current distribution within the module. As a platform, the DCM1000X offers many customizable features and provides scalable power solutions from 750 V to 1200 V, although this paper will focus on the performances of a 1200 V, 660 A SiC half-bridge module, a leading variant within the family.
本文介绍了丹佛斯DCM1000X功率模块技术平台，该平台专为满足汽车牵引逆变器的最苛刻要求而开发，并经过优化，可充分发挥最新碳化硅(SiC)功率开关的功能。丹佛斯独有的先进封装技术，如丹佛斯Bond Buffer®(DBB®)和ShowerPower®3D (SP3D®)，已被用于应对电动汽车传动系统中的冷却和热机械挑战。三直流端子设计，以及对称优化的内部布局，最大限度地降低了电源环路电感，保证了模块内电流分布均衡。作为一个平台，DCM1000X提供了许多可定制的功能，并提供了从750 V到1200 V的可扩展电源解决方案，尽管本文将重点介绍1200 V, 660 a SiC半桥模块的性能，该模块是该系列中的领先型号。
{"title":"DCM™1000X – Automotive Power Module Technology Platform Optimized for SiC Traction Inverters","authors":"F. Carastro, Zheng Chen, Alexander Streibel, O. Muehlfeld","doi":"10.1109/APEC42165.2021.9487446","DOIUrl":"https://doi.org/10.1109/APEC42165.2021.9487446","url":null,"abstract":"This paper introduces the Danfoss DCM1000X power module technology platform, which is developed to meet the harshest requirements of automotive traction inverters, and optimized to fully unleash the capabilities of latest silicon carbide (SiC) power switches. Advanced packaging technologies unique to Danfoss, such as Danfoss Bond Buffer® (DBB®) and ShowerPower® 3D (SP3D®), have been implemented to embrace the cooling and thermo-mechanical challenges in electric vehicle drivetrains. The three-DC-terminal design, and the symmetrical and optimized internal layout, minimize the power loop inductance, and ensure balanced current distribution within the module. As a platform, the DCM1000X offers many customizable features and provides scalable power solutions from 750 V to 1200 V, although this paper will focus on the performances of a 1200 V, 660 A SiC half-bridge module, a leading variant within the family.","PeriodicalId":7050,"journal":{"name":"2021 IEEE Applied Power Electronics Conference and Exposition (APEC)","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2021-06-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"78506166","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 : 2021-06-14DOI: 10.1109/APEC42165.2021.9487298
Chaochao Song, Yongheng Yang, A. Sangwongwanich, Yiwei Pan, F. Blaabjerg
Two-three (2/3)-level dual-active-bridge (DAB) DC-DC converters have high potential to become a promising solution for medium-voltage DC (MVDC) systems. In this paper, the operating constraints based on the switching characteristics of the 2/3-level DAB converters are analyzed comprehensively with a five-level control scheme, in order to ensure stable and reliable operation. Furthermore, to reduce the complexity of the modeling, a unified power-transfer model is derived based on an equivalent method, and five operating modes are divided, being the references for reliable and efficient control. Simulation results verify the effectiveness of the operating constraints and accuracy of the proposed model.
{"title":"Modeling and Analysis of 2/3-Level Dual-Active-Bridge DC-DC Converters with the Five-Level Control Scheme","authors":"Chaochao Song, Yongheng Yang, A. Sangwongwanich, Yiwei Pan, F. Blaabjerg","doi":"10.1109/APEC42165.2021.9487298","DOIUrl":"https://doi.org/10.1109/APEC42165.2021.9487298","url":null,"abstract":"Two-three (2/3)-level dual-active-bridge (DAB) DC-DC converters have high potential to become a promising solution for medium-voltage DC (MVDC) systems. In this paper, the operating constraints based on the switching characteristics of the 2/3-level DAB converters are analyzed comprehensively with a five-level control scheme, in order to ensure stable and reliable operation. Furthermore, to reduce the complexity of the modeling, a unified power-transfer model is derived based on an equivalent method, and five operating modes are divided, being the references for reliable and efficient control. Simulation results verify the effectiveness of the operating constraints and accuracy of the proposed model.","PeriodicalId":7050,"journal":{"name":"2021 IEEE Applied Power Electronics Conference and Exposition (APEC)","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2021-06-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"75075217","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 : 2021-06-14DOI: 10.1109/APEC42165.2021.9487198
Yue Zhang, Faisal Alsaif, Xiao Li, Risha Na, Jin Wang
This paper introduces the principle, operation and topology family of the novel T-type Modular Dc Circuit Breaker (T-Breaker) system for future dc networks. The T-Breaker system has a modular structure, locally integrated energy storage, high tolerance to control signal mismatch during the fast network transients, and capability to assist power flow control, power quality improvement and stability enhancement. This is a paradigm shift from traditional solid-state circuit breakers (SSCBs) as the proposed T-Type Breaker not only protects against faults, but also can eventually function as an energy router with unparalleled ancillary functions for dc grids.
{"title":"T-Type Modular Dc Circuit Breaker (T-Breaker) for Future Dc Networks","authors":"Yue Zhang, Faisal Alsaif, Xiao Li, Risha Na, Jin Wang","doi":"10.1109/APEC42165.2021.9487198","DOIUrl":"https://doi.org/10.1109/APEC42165.2021.9487198","url":null,"abstract":"This paper introduces the principle, operation and topology family of the novel T-type Modular Dc Circuit Breaker (T-Breaker) system for future dc networks. The T-Breaker system has a modular structure, locally integrated energy storage, high tolerance to control signal mismatch during the fast network transients, and capability to assist power flow control, power quality improvement and stability enhancement. This is a paradigm shift from traditional solid-state circuit breakers (SSCBs) as the proposed T-Type Breaker not only protects against faults, but also can eventually function as an energy router with unparalleled ancillary functions for dc grids.","PeriodicalId":7050,"journal":{"name":"2021 IEEE Applied Power Electronics Conference and Exposition (APEC)","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2021-06-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"74965910","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 : 2021-06-14DOI: 10.1109/APEC42165.2021.9487436
Qi Liu, Dejun Zheng, Min Zheng, Qinsong Qian, Shen Xu, Weifeng Sun
A high-power-density four-switch buck-boost (FSBB) converter based on 3D multi-PCB structure is proposed in this paper. Compared with the conventional planar solution, the two half-bridges of the FSBB converter are divided into two PCBs, which are arranged symmetrically on the left and right sides of the planar inductor. The control board is arranged on the bottom side of the planar inductor. PCBs of the power and control stage are wrapped around the planar inductor to form a 3D structure, which is similar to the expanded view of a cuboid. The 3D structure can effectively reduce the area wasted by the planar layout and thus improve power density. Moreover, the power loop in the 3D structure is optimized to reduce parasitic inductance as well as high-frequency voltage overshoot. Finally, a 280W FSBB prototype is built to verify the proposed structure, which achieves the peak efficiency of 98.1% at 1MHz switching frequency. Compared with the conventional planar structure, the power density increases from 90W/in3 to 432W/in3.
{"title":"A High-Power-Density Four-switch Buck-boost Converter using 3D Multi-PCB Structure","authors":"Qi Liu, Dejun Zheng, Min Zheng, Qinsong Qian, Shen Xu, Weifeng Sun","doi":"10.1109/APEC42165.2021.9487436","DOIUrl":"https://doi.org/10.1109/APEC42165.2021.9487436","url":null,"abstract":"A high-power-density four-switch buck-boost (FSBB) converter based on 3D multi-PCB structure is proposed in this paper. Compared with the conventional planar solution, the two half-bridges of the FSBB converter are divided into two PCBs, which are arranged symmetrically on the left and right sides of the planar inductor. The control board is arranged on the bottom side of the planar inductor. PCBs of the power and control stage are wrapped around the planar inductor to form a 3D structure, which is similar to the expanded view of a cuboid. The 3D structure can effectively reduce the area wasted by the planar layout and thus improve power density. Moreover, the power loop in the 3D structure is optimized to reduce parasitic inductance as well as high-frequency voltage overshoot. Finally, a 280W FSBB prototype is built to verify the proposed structure, which achieves the peak efficiency of 98.1% at 1MHz switching frequency. Compared with the conventional planar structure, the power density increases from 90W/in3 to 432W/in3.","PeriodicalId":7050,"journal":{"name":"2021 IEEE Applied Power Electronics Conference and Exposition (APEC)","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2021-06-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"80156593","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
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