Article(id=1195437525369140075, tenantId=1146029695717560320, journalId=1190306094246359042, issueId=1195437520126260033, articleNumber=null, orderNo=null, doi=10.19595/j.cnki.1000-6753.tces.240865, pmid=null, cstr=null, oa=null, hot=null, price=null, onlineType=0, articleFormat=0, articleType=null, articleTypeStr=research-article, receivedDate=1716480000000, receivedDateStr=2024-05-24, revisedDate=1718553600000, revisedDateStr=2024-06-17, acceptedDate=null, acceptedDateStr=null, onlineDate=1762944116203, onlineDateStr=2025-11-12, pubDate=1748102400000, pubDateStr=2025-05-25, doiRegisterDate=null, doiRegisterDateStr=null, onlineIssueDate=1762944116203, onlineIssueDateStr=2025-11-12, onlineJustAcceptDate=null, onlineJustAcceptDateStr=null, onlineFirstDate=null, onlineFirstDateStr=null, sourceXml=null, magXml=null, createTime=1762944116203, creator=13701087609, updateTime=1762944116203, updator=13701087609, issue=Issue{id=1195437520126260033, tenantId=1146029695717560320, journalId=1190306094246359042, year='2025', volume='40', issue='10', pageStart='3013', pageEnd='3338', issueExtLink='null', onlineDate='null', pubDate='null', beforeIssueId=null, nextIssueId=null, price=null, status=1, issueComplete=1, articleOrder=1, issueType=-1, specialIssue=null, createTime=1762944114953, creator=13701087609, updateTime=1764237254519, updator=13701087609, preIssue=null, nextIssue=null, ext={EN=IssueExt(id=1200861340710596791, tenantId=1146029695717560320, journalId=1190306094246359042, issueId=1195437520126260033, language=EN, specialIssueTitle=, coverIllustrator=null, specialIssueEditor=, specialIssueAbout=), CN=IssueExt(id=1200861340710596792, tenantId=1146029695717560320, journalId=1190306094246359042, issueId=1195437520126260033, language=CN, specialIssueTitle=, coverIllustrator=null, specialIssueEditor=, specialIssueAbout=)}, issueFiles=null}, startPage=3236, endPage=3250, ext={EN=ArticleExt(id=1195437525885039471, articleId=1195437525369140075, tenantId=1146029695717560320, journalId=1190306094246359042, language=EN, title=Low Ripple-Variable Frequency Control Strategy for High Efficiency Wide Range Four-Switch Buck-Boost Converter, columnId=null, journalTitle=Transactions of China Electrotechnical Society, columnName=null, runingTitle=null, highlight=null, articleAbstract=
Recently, the bus voltage of data center power architectures has been gradually increased from the traditional 12 V to 48 V to reduce the current in the distribution lines, thus reducing distribution losses. In 48 V bus-powered architectures, the uninterruptible power supply (UPS) system is connected in parallel with the 48 V bus, which causes the bus voltage to fluctuate over a wide range (40 V to 60 V). To better manage the bus voltage and energy flow, a bidirectional DC-DC converter must be inserted between the UPS and power-using systems. The four-switch Buck-Boost converter is attractive because of its high efficiency and wide voltage regulation capability. In order to reduce the energy consumption in data centers, it becomes crucial to improve the efficiency of FSBB.
This paper analyzes the voltage gain of the FSBB converter. Then, a graphical approach compares the control strategies of the FSBB converter. The unimodal control strategy has large ripples. The bimodal control strategy system is unstable. Tri-modal solves the problems of duty cycle limitation and system stability, but the duty cycle varies greatly when the transition mode is switched. Four-mode control can add a control mode in the transition section to realize smooth conversion between different modes, and the ripple of inductor current is small. It is a control strategy with excellent performance.
Then, the minimum ripple condition of the inductor current is analyzed based on four-mode control. The inductor current ripple of the FSBB converter is minimized when the phase shift time between the Buck and Boost bridge arms is controlled to zero. The average value of the inductor current is related to the output voltage, input voltage, maximum duty cycle, and output current, and it is almost the same for all four-mode control strategies. Therefore, the control method to minimize the inductor current can be obtained by simultaneously controlling the phase shift time to zero.
Next, an accurate loss model of the FSBB converter is developed. When the voltage gain is constant, the loss of the converter increases as the load current increases. When the load is fixed, the lower the switching frequency, the lower the loss. Under the same load conditions, if the voltage gain is greater than 1, the loss decreases with the gradual increase of the gain at the same switching frequency until the loss is minimized when the voltage gain equals 1. On the contrary, if the voltage gain is less than 1, the loss gradually decreases as the gain gradually increases. Thus, this paper proposes a frequency reduction control strategy to reduce the converter loss in the transition mode and improve the conversion efficiency by reducing the switching.
Finally, an experimental platform is established to test the inverter control strategy for the FSBB converter in steady states. The minimum ripple control strategy is then validated. The results show that the transition mode’s inductor current ripple with the proposed control strategy is much smaller than the conventional four-mode control strategy. Among them, the inductor current ripple of the proposed minimum ripple control strategy is 35.2% of the conventional control strategy under the operating conditions of 51 V input voltage and 48 V output voltage. After reducing the switching frequency, the inductor current ripple of the minimum ripple control strategy is still smaller than that of the conventional control strategy. The efficiency of the proposed low ripple inverter control strategy is improved over the whole load variation range compared with the traditional fixed frequency control. Among them, the peak efficiency of the proposed inverter control strategy reaches 98.52% and full-load efficiency 98.4%, which is improved by 2.46% and 2.35% compared to the conventional scheme, respectively.
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四开关Buck-Boost(FSBB)变换器凭借其优异的宽范围电压调节能力和输入输出电压极性相同的特点被广泛应用于电子设备中。基于四模态控制策略的FSBB变换器在输入电压和输出电压接近时会工作在过渡模式(扩展降压模式或扩展升压模式)。此时变换器的所有开关器件都将处于工作状态,变换器的开关损耗增加,变换器的转换效率降低。针对上述问题,该文提出一种低纹波-变频控制策略,当FSBB变换器工作在过渡模式时,控制两个桥臂之间的移相时间使电感电流的纹波降至最低,然后降低开关频率,提高变换器的效率。首先,分析FSBB变换器多模态控制的工作特点,指出单模态控制电感电流纹波较大、双模态控制占空比受限和三模态控制电流有效值较大的缺点,进而确定四模态控制的工作模式;其次,分析四模态控制策略下电感电流纹波与桥臂移相时间的关系,得到最小电感电流纹波的工作条件;再次,建立FSBB变换器的损耗模型,并提出低纹波-降频控制策略,降低FSBB变换器过渡模式时的开关频率,提高变换器效率;最后,搭建一个300 W的实验样机,实验结果表明,所提出的低纹波-变频控制策略的电感电流纹波在相同开关频率下仅为传统控制策略的35.6%。另外,通过实验样机实现了98.52%的峰值转换效率和98.4%的满载转换效率。相比较于传统定频控制策略,峰值效率提高了2.46%,满载效率提高了2.35%。
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, authorsList=吴佳芮, 杨旭, 王道玺, 王康平, 陈文洁)}, authors=[Author(id=1200881532325028093, tenantId=1146029695717560320, journalId=1190306094246359042, articleId=1195437525369140075, orderNo=0, firstName=null, middleName=null, lastName=null, nameCn=null, orcid=null, stid=null, country=null, authorPic=null, dead=0, email=wujiarui123@stu.xjtu.edu.cn, emailSecond=null, emailThird=null, correspondingAuthor=0, authorType=1, ext={EN=AuthorExt(id=1200881532513771788, tenantId=1146029695717560320, journalId=1190306094246359042, articleId=1195437525369140075, authorId=1200881532325028093, language=EN, stringName=Jiarui Wu, firstName=Jiarui, middleName=null, lastName=Wu, prefix=null, suffix=null, authorComment=null, nameInitials=null, affiliation=null, department=null, xref=null, address=School of Electrical Engineering Xi’an Jiaotong University Xi’an 710049 China, bio=null, bioImg=null, bioContent=null, aboutCorrespAuthor=null), CN=AuthorExt(id=1200881532715098395, tenantId=1146029695717560320, journalId=1190306094246359042, articleId=1195437525369140075, authorId=1200881532325028093, language=CN, stringName=吴佳芮, firstName=null, middleName=null, lastName=null, prefix=null, suffix=null, authorComment=null, nameInitials=null, affiliation=null, department=null, xref=null, address=西安交通大学电气工程学院 西安 710049, bio={"content":"
吴佳芮 男,1996年生,博士研究生,研究方向为高频高密度变换器。E-mail: wujiarui123@stu.xjtu.edu.cn
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吴佳芮 男,1996年生,博士研究生,研究方向为高频高密度变换器。E-mail: wujiarui123@stu.xjtu.edu.cn
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39(6): 1818-1829., articleTitle=GaN- based switched linear composite high-speed follow-up pulse load DC converter, refAbstract=null)], funds=[Fund(id=1200881550909988952, tenantId=1146029695717560320, journalId=1190306094246359042, articleId=1195437525369140075, awardId=U23B20138, language=CN, fundingSource=国家自然科学基金重点联合基金项目(U23B20138), fundOrder=null, country=null), Fund(id=1200881551203590242, tenantId=1146029695717560320, journalId=1190306094246359042, articleId=1195437525369140075, awardId=52277198, language=CN, fundingSource=国家自然科学基金面上项目(52277198), fundOrder=null, country=null)], companyList=[AuthorCompany(id=1200881532144673001, tenantId=1146029695717560320, journalId=1190306094246359042, articleId=1195437525369140075, xref=null, ext=[AuthorCompanyExt(id=1200881532157255915, tenantId=1146029695717560320, journalId=1190306094246359042, articleId=1195437525369140075, companyId=1200881532144673001, language=EN, country=null, province=null, city=null, postcode=null, companyName=null, departmentName=null, remark=School of Electrical Engineering Xi’an Jiaotong University Xi’an 710049 China), AuthorCompanyExt(id=1200881532169838831, tenantId=1146029695717560320, journalId=1190306094246359042, articleId=1195437525369140075, companyId=1200881532144673001, language=CN, country=null, province=null, city=null, postcode=null, companyName=null, departmentName=null, remark=西安交通大学电气工程学院 西安 710049)])], figs=[ArticleFig(id=1200881537148477996, tenantId=1146029695717560320, journalId=1190306094246359042, articleId=1195437525369140075, language=EN, label=Fig.1, caption=
Data center power architectures with 48 V bus, figureFileSmall=F+hOh0nQEir9WHvuHDm3Vw==, figureFileBig=MfUHNxE3iEuW7ecVP8OszA==, tableContent=null), ArticleFig(id=1200881537274307122, tenantId=1146029695717560320, journalId=1190306094246359042, articleId=1195437525369140075, language=CN, label=图1, caption=
48 V母线电压数据中心架构, figureFileSmall=F+hOh0nQEir9WHvuHDm3Vw==, figureFileBig=MfUHNxE3iEuW7ecVP8OszA==, tableContent=null), ArticleFig(id=1200881537437884988, tenantId=1146029695717560320, journalId=1190306094246359042, articleId=1195437525369140075, language=EN, label=Fig.2, caption=
Four-switch Buck-Boost converter, figureFileSmall=uGAyLTY4ju/rWPP2c4MIGg==, figureFileBig=QAYSd/fVTmtKB3CBb9iDBA==, tableContent=null), ArticleFig(id=1200881537630822985, tenantId=1146029695717560320, journalId=1190306094246359042, articleId=1195437525369140075, language=CN, label=图2, caption=
四开关Buck-Boost变换器, figureFileSmall=uGAyLTY4ju/rWPP2c4MIGg==, figureFileBig=QAYSd/fVTmtKB3CBb9iDBA==, tableContent=null), ArticleFig(id=1200881537802789457, tenantId=1146029695717560320, journalId=1190306094246359042, articleId=1195437525369140075, language=EN, label=Fig.3, caption=
Voltage gain of the FSBB converter, figureFileSmall=9NwtMBlOTu5uOjBbu2T2Dg==, figureFileBig=koeKa+z+5Eeb17JA4EKetw==, tableContent=null), ArticleFig(id=1200881537957978715, tenantId=1146029695717560320, journalId=1190306094246359042, articleId=1195437525369140075, language=CN, label=图3, caption=
FSBB变换器的电压增益, figureFileSmall=9NwtMBlOTu5uOjBbu2T2Dg==, figureFileBig=koeKa+z+5Eeb17JA4EKetw==, tableContent=null), ArticleFig(id=1200881538071224926, tenantId=1146029695717560320, journalId=1190306094246359042, articleId=1195437525369140075, language=EN, label=Fig.4, caption=
Single-mode control strategy for FSBB converter, figureFileSmall=VBRB4FbadvERNf6CK7Ubbw==, figureFileBig=lq0HOOobxJSP4nQJKxAwOg==, tableContent=null), ArticleFig(id=1200881538209636965, tenantId=1146029695717560320, journalId=1190306094246359042, articleId=1195437525369140075, language=CN, label=图4, caption=
FSBB变换器的单模态控制策略, figureFileSmall=VBRB4FbadvERNf6CK7Ubbw==, figureFileBig=lq0HOOobxJSP4nQJKxAwOg==, tableContent=null), ArticleFig(id=1200881538364826224, tenantId=1146029695717560320, journalId=1190306094246359042, articleId=1195437525369140075, language=EN, label=Fig.5, caption=
Dual-mode control strategy for FSBB converter, figureFileSmall=Guk59yyeZS6p+oETcu07BA==, figureFileBig=HGWMlFYkk+fmxrdI1by6QQ==, tableContent=null), ArticleFig(id=1200881538499043960, tenantId=1146029695717560320, journalId=1190306094246359042, articleId=1195437525369140075, language=CN, label=图5, caption=
FSBB变换器的双模态控制策略, figureFileSmall=Guk59yyeZS6p+oETcu07BA==, figureFileBig=HGWMlFYkk+fmxrdI1by6QQ==, tableContent=null), ArticleFig(id=1200881538603901562, tenantId=1146029695717560320, journalId=1190306094246359042, articleId=1195437525369140075, language=EN, label=Fig.6, caption=
Three-mode control strategy for FSBB converter, figureFileSmall=RosngQ6q/AwMydoAoxmKvQ==, figureFileBig=rjmtWGU3xu1dVMrbtyH4lg==, tableContent=null), ArticleFig(id=1200881538805228163, tenantId=1146029695717560320, journalId=1190306094246359042, articleId=1195437525369140075, language=CN, label=图6, caption=
FSBB变换器的三模态控制策略, figureFileSmall=RosngQ6q/AwMydoAoxmKvQ==, figureFileBig=rjmtWGU3xu1dVMrbtyH4lg==, tableContent=null), ArticleFig(id=1200881539006554765, tenantId=1146029695717560320, journalId=1190306094246359042, articleId=1195437525369140075, language=EN, label=Fig.7, caption=
Four-mode control strategy for FSBB converter, figureFileSmall=LB4uo1XanrSRaXQEpz0Z6g==, figureFileBig=xMHB1fy1CIZPpAep6JBw0g==, tableContent=null), ArticleFig(id=1200881539132383894, tenantId=1146029695717560320, journalId=1190306094246359042, articleId=1195437525369140075, language=CN, label=图7, caption=
FSBB变换器的四模态控制策略, figureFileSmall=LB4uo1XanrSRaXQEpz0Z6g==, figureFileBig=xMHB1fy1CIZPpAep6JBw0g==, tableContent=null), ArticleFig(id=1200881539254018718, tenantId=1146029695717560320, journalId=1190306094246359042, articleId=1195437525369140075, language=EN, label=Fig.8, caption=
Equivalent circuit of FSBB converter at fixed duty cycle, figureFileSmall=1Aeaq4o3iMnIGZF1lVJPIQ==, figureFileBig=d8JXVkLDoVaoRZQIrIB4iw==, tableContent=null), ArticleFig(id=1200881539421790885, tenantId=1146029695717560320, journalId=1190306094246359042, articleId=1195437525369140075, language=CN, label=图8, caption=
固定占空比时的FSBB变换器的等效电路, figureFileSmall=1Aeaq4o3iMnIGZF1lVJPIQ==, figureFileBig=d8JXVkLDoVaoRZQIrIB4iw==, tableContent=null), ArticleFig(id=1200881539556008620, tenantId=1146029695717560320, journalId=1190306094246359042, articleId=1195437525369140075, language=EN, label=Fig.9, caption=
Critical waveforms with different phase shift times, figureFileSmall=dOK4dhAIpWMfbkk20tDZIw==, figureFileBig=wELuR6bb1qV7oTui9UAjAA==, tableContent=null), ArticleFig(id=1200881539849609913, tenantId=1146029695717560320, journalId=1190306094246359042, articleId=1195437525369140075, language=CN, label=图9, caption=
不同移相时间的关键波形, figureFileSmall=dOK4dhAIpWMfbkk20tDZIw==, figureFileBig=wELuR6bb1qV7oTui9UAjAA==, tableContent=null), ArticleFig(id=1200881540982072005, tenantId=1146029695717560320, journalId=1190306094246359042, articleId=1195437525369140075, language=EN, label=Fig.10, caption=
The relationship between inductor current ripple with bridge arm phase shift time and input voltage (extended Buck mode), figureFileSmall=I++CrUEpDoLg6AyHGvqzLA==, figureFileBig=wbLwWAjPTEqX8lFE1sPEGg==, tableContent=null), ArticleFig(id=1200881541133066958, tenantId=1146029695717560320, journalId=1190306094246359042, articleId=1195437525369140075, language=CN, label=图10, caption=
电感电流纹波随桥臂移相时间和输入电压的关系(扩展Buck模式), figureFileSmall=I++CrUEpDoLg6AyHGvqzLA==, figureFileBig=wbLwWAjPTEqX8lFE1sPEGg==, tableContent=null), ArticleFig(id=1200881541263090392, tenantId=1146029695717560320, journalId=1190306094246359042, articleId=1195437525369140075, language=EN, label=Fig.11, caption=
The relationship between inductor current ripple with bridge arm phase shift time and input voltage (extended Boost mode), figureFileSmall=hEPQ7PEHm6gaoU5z4iVM+w==, figureFileBig=qq/+VA7GK3t1WrcVmRi34w==, tableContent=null), ArticleFig(id=1200881541372142309, tenantId=1146029695717560320, journalId=1190306094246359042, articleId=1195437525369140075, language=CN, label=图11, caption=
电感电流纹波随桥臂移相时间和输入电压的关系(扩展Boost模式), figureFileSmall=hEPQ7PEHm6gaoU5z4iVM+w==, figureFileBig=qq/+VA7GK3t1WrcVmRi34w==, tableContent=null), ArticleFig(id=1200881541476999920, tenantId=1146029695717560320, journalId=1190306094246359042, articleId=1195437525369140075, language=EN, label=Fig.12, caption=
Critical waveforms for a rising edge synchronized four-mode control strategy for FSBB converter, figureFileSmall=Q73GTajN+Sogbq/X8NTtLw==, figureFileBig=v6vrF9pgEVHWKP7+7G/tlg==, tableContent=null), ArticleFig(id=1200881541611217659, tenantId=1146029695717560320, journalId=1190306094246359042, articleId=1195437525369140075, language=CN, label=图12, caption=
FSBB变换器上升沿同步四模态控制策略的关键波形, figureFileSmall=Q73GTajN+Sogbq/X8NTtLw==, figureFileBig=v6vrF9pgEVHWKP7+7G/tlg==, tableContent=null), ArticleFig(id=1200881541799961346, tenantId=1146029695717560320, journalId=1190306094246359042, articleId=1195437525369140075, language=EN, label=Fig.13, caption=
Comparison of inductor ripple with different control strategies, figureFileSmall=EVuK+2QB6baIl18baQ8/3g==, figureFileBig=Qgn8NE5nAboCzod4WSMu0A==, tableContent=null), ArticleFig(id=1200881541917401866, tenantId=1146029695717560320, journalId=1190306094246359042, articleId=1195437525369140075, language=CN, label=图13, caption=
不同控制策略的电感纹波对比, figureFileSmall=EVuK+2QB6baIl18baQ8/3g==, figureFileBig=Qgn8NE5nAboCzod4WSMu0A==, tableContent=null), ArticleFig(id=1200881542055813908, tenantId=1146029695717560320, journalId=1190306094246359042, articleId=1195437525369140075, language=EN, label=Fig.14, caption=
Loss versus load current and switching frequency (Vout=48 V), figureFileSmall=bl7DJW7Ap4ASJcwkgPGc2Q==, figureFileBig=yuBNdyx2l6/K4yBo/B27Fw==, tableContent=null), ArticleFig(id=1200881542177448729, tenantId=1146029695717560320, journalId=1190306094246359042, articleId=1195437525369140075, language=CN, label=图14, caption=
损耗随负载电流和开关频率的关系(Vout=48 V), figureFileSmall=bl7DJW7Ap4ASJcwkgPGc2Q==, figureFileBig=yuBNdyx2l6/K4yBo/B27Fw==, tableContent=null), ArticleFig(id=1200881542349415203, tenantId=1146029695717560320, journalId=1190306094246359042, articleId=1195437525369140075, language=EN, label=Fig.15, caption=
Loss with input voltage and switching frequency (Iout=6 A), figureFileSmall=CQLYuKBTAqOpd9rHwtpR+w==, figureFileBig=JccvZl3kRgNJi97N7CTr1g==, tableContent=null), ArticleFig(id=1200881542458467116, tenantId=1146029695717560320, journalId=1190306094246359042, articleId=1195437525369140075, language=CN, label=图15, caption=
损耗随输入电压和开关频率的关系(Iout=6 A), figureFileSmall=CQLYuKBTAqOpd9rHwtpR+w==, figureFileBig=JccvZl3kRgNJi97N7CTr1g==, tableContent=null), ArticleFig(id=1200881542575907635, tenantId=1146029695717560320, journalId=1190306094246359042, articleId=1195437525369140075, language=EN, label=Fig.16, caption=
Low ripple-variable frequency four-mode control flow, figureFileSmall=UnPylS7uNM9PpQW34Vf6KQ==, figureFileBig=EV2LPZryBvtYIUy9zySvVA==, tableContent=null), ArticleFig(id=1200881542785622847, tenantId=1146029695717560320, journalId=1190306094246359042, articleId=1195437525369140075, language=CN, label=图16, caption=
低纹波-变频四模态控制流程, figureFileSmall=UnPylS7uNM9PpQW34Vf6KQ==, figureFileBig=EV2LPZryBvtYIUy9zySvVA==, tableContent=null), ArticleFig(id=1200881542898869063, tenantId=1146029695717560320, journalId=1190306094246359042, articleId=1195437525369140075, language=EN, label=Fig.17, caption=
Transition mode switching frequency versus input voltage, figureFileSmall=Toe1pdvDxX11YYAZ1mJ24g==, figureFileBig=S1VkIyyT57hbCY8kD0eLYQ==, tableContent=null), ArticleFig(id=1200881543033086796, tenantId=1146029695717560320, journalId=1190306094246359042, articleId=1195437525369140075, language=CN, label=图17, caption=
过渡模式开关频率与输入电压的关系, figureFileSmall=Toe1pdvDxX11YYAZ1mJ24g==, figureFileBig=S1VkIyyT57hbCY8kD0eLYQ==, tableContent=null), ArticleFig(id=1200881543133750098, tenantId=1146029695717560320, journalId=1190306094246359042, articleId=1195437525369140075, language=EN, label=Fig.18, caption=
Experimental platforms, figureFileSmall=5fJkafNvfapW0h+93TRgzw==, figureFileBig=MiUTCWRUzfjWItUxgIw+Zg==, tableContent=null), ArticleFig(id=1200881543213441878, tenantId=1146029695717560320, journalId=1190306094246359042, articleId=1195437525369140075, language=CN, label=图18, caption=
实验平台, figureFileSmall=5fJkafNvfapW0h+93TRgzw==, figureFileBig=MiUTCWRUzfjWItUxgIw+Zg==, tableContent=null), ArticleFig(id=1200881543343465309, tenantId=1146029695717560320, journalId=1190306094246359042, articleId=1195437525369140075, language=EN, label=Fig.19, caption=
Steady-state waveforms in different operating modes, figureFileSmall=OZCsRK0vM0ScqPABGC3yCg==, figureFileBig=3dvZ0xdCeGGXLFZbPIiGLw==, tableContent=null), ArticleFig(id=1200881543460905825, tenantId=1146029695717560320, journalId=1190306094246359042, articleId=1195437525369140075, language=CN, label=图19, caption=
不同工作模式下的稳态波形, figureFileSmall=OZCsRK0vM0ScqPABGC3yCg==, figureFileBig=3dvZ0xdCeGGXLFZbPIiGLw==, tableContent=null), ArticleFig(id=1200881543590929254, tenantId=1146029695717560320, journalId=1190306094246359042, articleId=1195437525369140075, language=EN, label=Fig.20, caption=
Wide range input regulator waveforms (Vo=48 V), figureFileSmall=qFOOTtHztBXG+AyAhBEIiw==, figureFileBig=tP9Bvi8cclQ6k7jS9p6ELw==, tableContent=null), ArticleFig(id=1200881543720952684, tenantId=1146029695717560320, journalId=1190306094246359042, articleId=1195437525369140075, language=CN, label=图20, caption=
宽范围输入调压波形(Vo=48 V), figureFileSmall=qFOOTtHztBXG+AyAhBEIiw==, figureFileBig=tP9Bvi8cclQ6k7jS9p6ELw==, tableContent=null), ArticleFig(id=1200881543867753330, tenantId=1146029695717560320, journalId=1190306094246359042, articleId=1195437525369140075, language=EN, label=Fig.21, caption=
Inductor current ripple test results, figureFileSmall=PycJX5QPzYkW7o4BXTxC8w==, figureFileBig=AmbsuzmjvGEW+6Otw0d8/g==, tableContent=null), ArticleFig(id=1200881544010359674, tenantId=1146029695717560320, journalId=1190306094246359042, articleId=1195437525369140075, language=CN, label=图21, caption=
电感电流纹波测试结果, figureFileSmall=PycJX5QPzYkW7o4BXTxC8w==, figureFileBig=AmbsuzmjvGEW+6Otw0d8/g==, tableContent=null), ArticleFig(id=1200881544211686275, tenantId=1146029695717560320, journalId=1190306094246359042, articleId=1195437525369140075, language=EN, label=Fig.22, caption=
Light load condition test results, figureFileSmall=Buh4kL5Z2a+d4XKJX3YbHw==, figureFileBig=sirKS0CqEEvHzQb8wom8aw==, tableContent=null), ArticleFig(id=1200881545528697745, tenantId=1146029695717560320, journalId=1190306094246359042, articleId=1195437525369140075, language=CN, label=图22, caption=
轻载工况测试结果, figureFileSmall=Buh4kL5Z2a+d4XKJX3YbHw==, figureFileBig=sirKS0CqEEvHzQb8wom8aw==, tableContent=null), ArticleFig(id=1200881545658721173, tenantId=1146029695717560320, journalId=1190306094246359042, articleId=1195437525369140075, language=EN, label=Fig.23, caption=
Experimental results of input voltage variation dynamics, figureFileSmall=E3M34rFzfartvBrrynzFwg==, figureFileBig=zilLJlArxbEoCCGhnDDlXA==, tableContent=null), ArticleFig(id=1200881545830687644, tenantId=1146029695717560320, journalId=1190306094246359042, articleId=1195437525369140075, language=CN, label=图23, caption=
输入电压变化动态实验结果, figureFileSmall=E3M34rFzfartvBrrynzFwg==, figureFileBig=zilLJlArxbEoCCGhnDDlXA==, tableContent=null), ArticleFig(id=1200881546023625642, tenantId=1146029695717560320, journalId=1190306094246359042, articleId=1195437525369140075, language=EN, label=Fig.24, caption=
Experimental results of load variation dynamics, figureFileSmall=HqNwI17L7WxTuONfUv0ZFw==, figureFileBig=qyO9IoRsKWNTMzO7HOEAjQ==, tableContent=null), ArticleFig(id=1200881546216563632, tenantId=1146029695717560320, journalId=1190306094246359042, articleId=1195437525369140075, language=CN, label=图24, caption=
负载变化动态实验结果, figureFileSmall=HqNwI17L7WxTuONfUv0ZFw==, figureFileBig=qyO9IoRsKWNTMzO7HOEAjQ==, tableContent=null), ArticleFig(id=1200881546510164926, tenantId=1146029695717560320, journalId=1190306094246359042, articleId=1195437525369140075, language=EN, label=Fig.25, caption=
Efficiency comparison of different input voltages under fixed frequency control strategy, figureFileSmall=lj56UuxLzCWVe8V1vvRNBA==, figureFileBig=M+yqimUzPf2pmilkj56Efg==, tableContent=null), ArticleFig(id=1200881546703102919, tenantId=1146029695717560320, journalId=1190306094246359042, articleId=1195437525369140075, language=CN, label=图25, caption=
定频控制策略下不同输入电压的效率比较, figureFileSmall=lj56UuxLzCWVe8V1vvRNBA==, figureFileBig=M+yqimUzPf2pmilkj56Efg==, tableContent=null), ArticleFig(id=1200881546917012435, tenantId=1146029695717560320, journalId=1190306094246359042, articleId=1195437525369140075, language=EN, label=Fig.26, caption=
Efficiency comparison of different input voltages under variable frequency control strategy, figureFileSmall=BVBK/fP97zKjQlfaArInZQ==, figureFileBig=wyq9AwAUdeFWa4BUqsRxew==, tableContent=null), ArticleFig(id=1200881547084784603, tenantId=1146029695717560320, journalId=1190306094246359042, articleId=1195437525369140075, language=CN, label=图26, caption=
变频控制策略下不同输入电压的效率比较, figureFileSmall=BVBK/fP97zKjQlfaArInZQ==, figureFileBig=wyq9AwAUdeFWa4BUqsRxew==, tableContent=null), ArticleFig(id=1200881547202225118, tenantId=1146029695717560320, journalId=1190306094246359042, articleId=1195437525369140075, language=EN, label=Fig.27, caption=
Efficiency comparison of different control strategies, figureFileSmall=+rNoBubfpRqP+jHSVZW6og==, figureFileBig=5I4gAE/wDydpWRZxnbw7oA==, tableContent=null), ArticleFig(id=1200881547294499814, tenantId=1146029695717560320, journalId=1190306094246359042, articleId=1195437525369140075, language=CN, label=图27, caption=
不同控制策略的效率比较, figureFileSmall=+rNoBubfpRqP+jHSVZW6og==, figureFileBig=5I4gAE/wDydpWRZxnbw7oA==, tableContent=null), ArticleFig(id=1200881547428717550, tenantId=1146029695717560320, journalId=1190306094246359042, articleId=1195437525369140075, language=EN, label=Fig.28, caption=
Comparison of efficiency at different frequencies, figureFileSmall=vS8AJwPenHtCKRq5XkSvJw==, figureFileBig=aQn7wMFuBuBGtY308mZvqQ==, tableContent=null), ArticleFig(id=1200881547558740982, tenantId=1146029695717560320, journalId=1190306094246359042, articleId=1195437525369140075, language=CN, label=图28, caption=
不同频率的效率比较, figureFileSmall=vS8AJwPenHtCKRq5XkSvJw==, figureFileBig=aQn7wMFuBuBGtY308mZvqQ==, tableContent=null), ArticleFig(id=1200881547680375805, tenantId=1146029695717560320, journalId=1190306094246359042, articleId=1195437525369140075, language=EN, label=Fig.29, caption=
Losses with load current and inductor, figureFileSmall=0zrH/aPPlh2rXZ1cZUaQqw==, figureFileBig=2xqjrUqQKh3YHfs9b3sJLA==, tableContent=null), ArticleFig(id=1200881547772649473, tenantId=1146029695717560320, journalId=1190306094246359042, articleId=1195437525369140075, language=CN, label=图29, caption=
损耗随负载电流和电感的关系, figureFileSmall=0zrH/aPPlh2rXZ1cZUaQqw==, figureFileBig=2xqjrUqQKh3YHfs9b3sJLA==, tableContent=null), ArticleFig(id=1200881547890089991, tenantId=1146029695717560320, journalId=1190306094246359042, articleId=1195437525369140075, language=EN, label=Fig.30, caption=
Thermal distribution at full load, figureFileSmall=OR40xYBZcMlXpJOmrLPnHA==, figureFileBig=eOnHBVaEIn0dp0eOwb2uAg==, tableContent=null), ArticleFig(id=1200881547986558988, tenantId=1146029695717560320, journalId=1190306094246359042, articleId=1195437525369140075, language=CN, label=图30, caption=
满载热分布, figureFileSmall=OR40xYBZcMlXpJOmrLPnHA==, figureFileBig=eOnHBVaEIn0dp0eOwb2uAg==, tableContent=null), ArticleFig(id=1200881548103999504, tenantId=1146029695717560320, journalId=1190306094246359042, articleId=1195437525369140075, language=EN, label=Tab.1, caption=
Comparison of three transition models
, figureFileSmall=null, figureFileBig=null, tableContent=
| 控制方式 | 工作轨迹 | d1 | d2 | 特点 |
| Buck-Boost模式 | AD-NK-EC | D1 | 1-D1 | 占空比变化大 |
| 扩展Boost模式 | AD-HG-EC | d1_fix | D2 | 占空比变化小 |
| 扩展Buck模式 | AD-FL-EC | D1 | d2_fix | 占空比变化小 |
), ArticleFig(id=1200881548355657755, tenantId=1146029695717560320, journalId=1190306094246359042, articleId=1195437525369140075, language=CN, label=表1, caption=
三种过渡模式比较
, figureFileSmall=null, figureFileBig=null, tableContent=
| 控制方式 | 工作轨迹 | d1 | d2 | 特点 |
| Buck-Boost模式 | AD-NK-EC | D1 | 1-D1 | 占空比变化大 |
| 扩展Boost模式 | AD-HG-EC | d1_fix | D2 | 占空比变化小 |
| 扩展Buck模式 | AD-FL-EC | D1 | d2_fix | 占空比变化小 |
), ArticleFig(id=1200881548481486882, tenantId=1146029695717560320, journalId=1190306094246359042, articleId=1195437525369140075, language=EN, label=Tab.2, caption=
Comparison of four-mode control strategies
, figureFileSmall=null, figureFileBig=null, tableContent=
| 控制方式 | 工作轨迹 | 电压关系 | d1 | d2 | 特点 |
| 最大占空比模式 | ADF-H-GEC | Vin≥Vout | D1 | d2_max | 纹波小 |
| Vin<Vout | d1_max | D2 |
| 固定占空比模式 | ADF-L-GEC | Vin≥Vout | d1_fix | D2 | 纹波大 |
| Vin<Vout | D1 | d2_fix |
), ArticleFig(id=1200881548661841964, tenantId=1146029695717560320, journalId=1190306094246359042, articleId=1195437525369140075, language=CN, label=表2, caption=
四模态控制策略比较
, figureFileSmall=null, figureFileBig=null, tableContent=
| 控制方式 | 工作轨迹 | 电压关系 | d1 | d2 | 特点 |
| 最大占空比模式 | ADF-H-GEC | Vin≥Vout | D1 | d2_max | 纹波小 |
| Vin<Vout | d1_max | D2 |
| 固定占空比模式 | ADF-L-GEC | Vin≥Vout | d1_fix | D2 | 纹波大 |
| Vin<Vout | D1 | d2_fix |
), ArticleFig(id=1200881549873995826, tenantId=1146029695717560320, journalId=1190306094246359042, articleId=1195437525369140075, language=EN, label=Tab.3, caption=
Experimental prototype parameters
, figureFileSmall=null, figureFileBig=null, tableContent=
| 参 数 | 数 值 (型号) |
| 输入电压Vin/V | 36~60 |
| 输出电压Vout/V | 48 |
| 输出功率/W | 300 |
| 功率器件Q1~Q4 | EPC2218A |
| 额定开关频率/kHz | 800 |
| 最小开关频率/kHz | 400 |
| 电感L/μH | 4 |
| 控制器 | TMS320F28027 |
), ArticleFig(id=1200881550058545214, tenantId=1146029695717560320, journalId=1190306094246359042, articleId=1195437525369140075, language=CN, label=表3, caption=
样机参数
, figureFileSmall=null, figureFileBig=null, tableContent=
| 参 数 | 数 值 (型号) |
| 输入电压Vin/V | 36~60 |
| 输出电压Vout/V | 48 |
| 输出功率/W | 300 |
| 功率器件Q1~Q4 | EPC2218A |
| 额定开关频率/kHz | 800 |
| 最小开关频率/kHz | 400 |
| 电感L/μH | 4 |
| 控制器 | TMS320F28027 |
), ArticleFig(id=1200881550251483202, tenantId=1146029695717560320, journalId=1190306094246359042, articleId=1195437525369140075, language=EN, label=Tab.4, caption=
Experimental prototype parameters
, figureFileSmall=null, figureFileBig=null, tableContent=
| 控制方式 | 纹波电流/A |
| 扩展Buck模式 | 扩展Boost模式 |
| 传统控制 (800 kHz) | 1.7 | 1.9 |
| 最小纹波控制 (800 kHz) | 0.6 | 0.8 |
| 最小纹波控制 (400 kHz) | 1.3 | 1.7 |
), ArticleFig(id=1200881550452809800, tenantId=1146029695717560320, journalId=1190306094246359042, articleId=1195437525369140075, language=CN, label=表4, caption=
不同控制策略及开关频率的纹波比较
, figureFileSmall=null, figureFileBig=null, tableContent=
| 控制方式 | 纹波电流/A |
| 扩展Buck模式 | 扩展Boost模式 |
| 传统控制 (800 kHz) | 1.7 | 1.9 |
| 最小纹波控制 (800 kHz) | 0.6 | 0.8 |
| 最小纹波控制 (400 kHz) | 1.3 | 1.7 |
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