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Modeling and Current Programmed Control of a Bidirectional Full Bridge DC-DC Converter 被引量:3
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作者 Shahab H. A. Moghaddam Ahmad Ayatollahi Abdolreza Rahmati 《Energy and Power Engineering》 2012年第3期107-116,共10页
Modelling of bidirectional full bridge DC-DC converter as one of the most applicable converters has received significant attention. Mathematical modelling reduces the simulation time in comparison with detailed circui... Modelling of bidirectional full bridge DC-DC converter as one of the most applicable converters has received significant attention. Mathematical modelling reduces the simulation time in comparison with detailed circuit response;moreover it is convenient for controller design purpose. Due to simple and effective methodology, average state space is the most common method among the modelling methods. In this paper a bidirectional full bridge converter is modelled by average state space and for each mode of operations a controller is designed. Attained mathematical model results are in a close agreement with detailed circuit simulation. 展开更多
关键词 AVERAGE State Space bidirectional Detailed Circuit Simulation Full bridge dc-dc converter MATHEMATICAL MODELING
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A Resonant Dual Full-Bridge Class-E Bidirectional DC-DC Converter for Fuel Cell Electric Vehicle
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作者 Kuppan Senthil Dr. Daniel Mary 《Circuits and Systems》 2016年第10期3392-3402,共11页
The interests on energy storage schemes, bidirectional dc-dc converter and uninterruptible power supplies have been increasing nowadays as there wide researches are undertaken in the area of electric vehicles. A modif... The interests on energy storage schemes, bidirectional dc-dc converter and uninterruptible power supplies have been increasing nowadays as there wide researches are undertaken in the area of electric vehicles. A modified bi directional class-E resonant dc-dc converter is introduced here in this proposed topology for the application in electric vehicles. The advantages of soft switching techniques have been utilized for making analysis simple. The main advantage here in this system is that it can operate in a wide range of frequencies with minimal switching loss in transistors. This paper elaborates a detailed analysis on converter design and the same has been simulated and verified in Matlab/Simulink. 展开更多
关键词 bidirectional dc-dc Fuel Cell Electric Vehicle Resonant converter
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Experimental Evaluation of Medium-Voltage Cascode Gallium Nitride(GaN)Devices for Bidirectional DC-DC Converters 被引量:1
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作者 Salah S.Alharbi Mohammad Matin 《CES Transactions on Electrical Machines and Systems》 CSCD 2021年第3期232-248,共17页
Wide bandgap(WBG)semiconductors,such as silicon carbide(SiC)and gallium nitride(GaN),exhibit superior physical properties and demonstrate great potential for replacing conventional silicon(Si)semiconductors with WBG t... Wide bandgap(WBG)semiconductors,such as silicon carbide(SiC)and gallium nitride(GaN),exhibit superior physical properties and demonstrate great potential for replacing conventional silicon(Si)semiconductors with WBG technology,pushing the boundaries of power devices to handle higher blocking voltages,switching frequencies,output power levels,and operating temperatures.However,tradeoffs in switching performance and converter efficiency when substituting GaN devices for Si and SiC counterparts are not well-defined,especially in a cascode configuration.Additional research with further detailed investigation and analysis is necessitated for medium-voltage GaN devices in power converter applications.Therefore,the aim of this research is to experimentally investigate the impact of emerging 650/900 V cascode GaN devices on bidirectional dc-dc converters that are suitable for energy storage and distributed renewable energy systems.Dynamic characteristics of Si,SiC,and cascode GaN power devices are examined through the double-pulse test(DPT)circuit at different gate resistance values,device currents,and DC bus voltages.Furthermore,the switching behavior and energy loss as well as the rate of voltage and current changes over the time are studied and analyzed at various operating conditions.A 500 W experimental converter prototype is implemented to validate the benefits of cascode GaN devices on the converter operation and performance.Comprehensive analysis of the power losses and efficiency improvements for Si-based,SiC-based,and GaN-based converters are performed and evaluated as the switching frequency,working temperature,and output power level are in-creased.The experimental results reveal significant improvements in switching performance and energy efficiency from the emerging cascode GaN devices in the bidirectional converters. 展开更多
关键词 bidirectional dc-dc converters cascode GaN-FETs double-pulse test energy efficiency power loss analysis SiC-MOSFET SiC-Schottky diode switching characterization
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Design and Analysis of a 24 Vdc to 48 Vdc Bidirectional DC-DC Converter Specifically for a Distributed Energy Application
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作者 Ambrosio B. Cultura II Ziyad M. Salameh 《Energy and Power Engineering》 2012年第5期315-323,共9页
The design of a bidirectional dc-dc power converter specifically for a distributed energy application is presented. The existing two different DC voltage battery bank of the distributed generation needs to interlink e... The design of a bidirectional dc-dc power converter specifically for a distributed energy application is presented. The existing two different DC voltage battery bank of the distributed generation needs to interlink each other using a bi-directional dc-dc converter in order to minimize the unbalance of the output load currents of the three inverters connected to electric grid system. Through this connection, a current can flow from one system to another or vice versa depending on which systems need the current most. Thus, unbalanced currents of the grid line have been minimized and the reliability and performance of the DER grid connected system has been increased. A detailed mathematical analysis of the converter under steady state and transient condition are presented. Mathematical models for boost and buck modes are being derived and the simulink model is constructed in order to simulate the system. Moreover, the model has been validated on the actual operation of the converter, showing that the simulated results in Matlab Simulink are consistent with the experimental ones. 展开更多
关键词 Distributed Energy RESOURCES bidirectional dc-dc converter ELECTRIC GRID
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Multi-Phase QR ZCS Switched-Capacitor Bidirectional Power Converter for PV System Application
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作者 Yi-Pin Ko Yuang-Shung Lee Li-Jen Liu 《Journal of Energy and Power Engineering》 2012年第11期1869-1877,共9页
The multi-phase implementation in the QR (quasi resonant) ZCS (zero current switching) SC (switched capacitor) bidirectional DC-DC converter structure has been proposed to reduce current ripple, switching loss a... The multi-phase implementation in the QR (quasi resonant) ZCS (zero current switching) SC (switched capacitor) bidirectional DC-DC converter structure has been proposed to reduce current ripple, switching loss and significantly increase the converter efficiency and power density. This approach provides a more precise output voltage to obtain voltage conversion ratios from the double-mode versus half-mode to n-mode versus 1/n mode. This is accomplished by adding a different number of switched-capacitors and power MOSFET switches with a small series connected resonant inductor for forward and reverse schemes. The size and cost can be reduced when the proposed converter has been designed with the coupled inductors. The simulation and experimental results have been used to demonstrate the performance of the two-phase with and without coupled inductor interleaved QR ZCS SC converters for bidirectional power flow control application, and an extending structure for N-phase is mentioned. 展开更多
关键词 Quasi resonant zero current switching multiphase dc-dc converter switched capacitor bidirectional converter PVsystem.
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Quasi-Z-Source Based Bidirectional DC-DC Converter and Its Control Strategy 被引量:4
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作者 Yuba Raj Kafle Saad Ul Hasan Graham E.Town 《Chinese Journal of Electrical Engineering》 CSCD 2019年第1期1-9,共9页
This paper presents a quasi-Z-source based isolated bidirectional DC-DC converter(qZIBDC)for renewable energy applications.The converter utilizes a dual active bridge circuit with a quasi-Z-source network on both side... This paper presents a quasi-Z-source based isolated bidirectional DC-DC converter(qZIBDC)for renewable energy applications.The converter utilizes a dual active bridge circuit with a quasi-Z-source network on both sides,so the converter works as buck/boost converter from either side.It has a wider input/output voltage operating range,soft-switching capabilities without additional devices,and higher boost capability than a traditional dual active bridge circuit.Apart from that,shoot-through states are incorporated in its operating cycle to boost the input voltage resulting in high reliability of the proposed converter.Due to the symmetrical structure of the circuit,there is no defined high voltage or low voltage side as in traditional isolated bidirectional DC-DC converter.The operating principle and control strategy of the proposed converter are presented.Simulation and experimental results are provided to verify the effectiveness of the proposed converter topology and its control strategy. 展开更多
关键词 bidirectional dc-dc converter dual active bridge IMPEDANCE source quasi-Z-source dc-dc converter
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Dynamic and static performance optimization of dual active bridge DC-DC converters 被引量:7
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作者 Nie HOU Wensheng SONG +2 位作者 Yutong ZHU Xiao SUN Wei LI 《Journal of Modern Power Systems and Clean Energy》 SCIE EI 2018年第3期607-618,共12页
High efficiency and fast dynamic response are two main control objectives for dual active bridge(DAB)DC-DC converters. Traditional extended phase shift(EPS)control can significantly enhance the conversion efficiency o... High efficiency and fast dynamic response are two main control objectives for dual active bridge(DAB)DC-DC converters. Traditional extended phase shift(EPS)control can significantly enhance the conversion efficiency of DAB DC-DC converters by reducing current stress;however, it cannot fulfill fast dynamic response requirements. In this paper, a novel hybrid control scheme consisting of EPS control and direct power control(DPC),named as EPS-DPC, is proposed. EPS-DPC control has salient features in both efficiency and dynamic performance. In order to verify the outstanding performance of the proposed EPS-DPC scheme, an experimental comparison was carried out on a scale-down DAB DC-DC converter among several control strategies, including single phase shift control with traditional voltage-loop(SPS-TVL), EPS control with traditional voltage-loop(EPSVTL), and EPS-DPC. Experimental results have been high consistent with theoretical analysis, and verified these advantages of the proposed EPS-DPC scheme. 展开更多
关键词 Current stress Efficiency Dynamic response DUAL ACTIVE bridge(DAB) dc-dc converter Extended phase shift CONTROL Direct power CONTROL
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Non-isolated stacked bidirectional soft-switching DC-DC converter with PWM plus phase-shift control scheme 被引量:2
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作者 Ye MEI Qun JIANG +3 位作者 Heya YANG Wuhua LI Xiangning HE Shun LI 《Journal of Modern Power Systems and Clean Energy》 SCIE EI 2017年第4期631-641,共11页
In this paper, a non-isolated stacked bidirectional DC-DC converter with zero-voltage-switching(ZVS) is introduced for the high step-up/step-down conversion systems. The extremely narrow turn-on and/or turn-off duty c... In this paper, a non-isolated stacked bidirectional DC-DC converter with zero-voltage-switching(ZVS) is introduced for the high step-up/step-down conversion systems. The extremely narrow turn-on and/or turn-off duty cycle existing in the conventional bidirectional buck-boost converters can be extended due to the stacked module configuration for large voltage conversion ratio applications. Furthermore, the switch voltage stress is halved because of the series connection of half bridge modules. The PWM plus phase-shift control strategy is employed, where the duty cycle is adopted to regulate the voltages between the input and output sides and the phaseshift angle is applied to achieve the power flow regulation.This decoupled control scheme can not only realize seamless bidirectional transition operation, but also achieve adaptive voltage balance for the power switches. In addition, ZVS soft-switching operation for all active switches is realized to minimize the switching losses. Finally, a prototype of 1 kW operating at 100 kHz is built and tested to demonstrate the effectiveness of the proposed converter and the control strategy. 展开更多
关键词 bidirectional dc-dc converter PWM plus phase-shift control(PPS) Zero voltage switching(ZVS) Large voltage conversion ratio Flexible power flow regulation
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副边调整式三端口半桥DC-DC变换器 被引量:18
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作者 吴红飞 邢岩 +3 位作者 胡海兵 张君君 丁顺 陈润若 《中国电机工程学报》 EI CSCD 北大核心 2011年第30期1-6,共6页
在包含储能环节的独立新能源发电系统中,采用三端口变换器代替多个独立的变换器具有效率高、功率密度高、可靠性高和体积成本低等优点。分析三个端口之间的功率关系,发现了半桥变换器的原边电路寄生双向Buck/Boost拓扑,据此提出基于半... 在包含储能环节的独立新能源发电系统中,采用三端口变换器代替多个独立的变换器具有效率高、功率密度高、可靠性高和体积成本低等优点。分析三个端口之间的功率关系,发现了半桥变换器的原边电路寄生双向Buck/Boost拓扑,据此提出基于半桥式拓扑的隔离式三端口变换器拓扑生成思想;给出副边调整式和原边调整式两类三端口半桥变换器拓扑。以其中的副边调整式三端口半桥变换器拓扑为例,分析变换器的工作原理并进行实验验证,实验结果验证了所提出拓扑和理论分析的正确性。 展开更多
关键词 半桥变换器 三端口变换器 拓扑 双向变换器 独立新能源发电系统
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A Review of Isolated Bidirectional DC-DC Converters for Data Centers
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作者 Shuohang Chen Guidong Zhang +2 位作者 Samson S.Yu Yi Mei Yun Zhang 《Chinese Journal of Electrical Engineering》 EI CSCD 2023年第4期1-22,共22页
In today’s fast-paced,information-driven world,data centers can offer high-speed,intricate capabilities on a larger scale owing to the ever-growing demand for networks and information systems.Because data centers pro... In today’s fast-paced,information-driven world,data centers can offer high-speed,intricate capabilities on a larger scale owing to the ever-growing demand for networks and information systems.Because data centers process and transmit information,stability and reliability are important.Data center power supply architectures rely heavily on isolated bidirectional DC-DC converters to ensure safety and stability.For the smooth operation of a data center,the power supply must be reliable and uninterrupted.In this study,we summarize the basic principle,topology,switch conversion strategy,and control technology of the existing isolated bidirectional DC-DC converters.Subsequently,existing research results and problems with isolated bidirectional DC-DC converters are reviewed.Finally,future trends in the development of isolated bidirectional DC-DC converters for data centers are presented,which offer valuable insights for solving engineering obstacles and future research directions in the field. 展开更多
关键词 Data centers isolated bidirectional dc-dc converters power electronics topology control strategy
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隔离式双向全桥DC-DC变换器的功率控制特性比较与分析 被引量:60
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作者 武琳 刘志刚 洪祥 《电工技术学报》 EI CSCD 北大核心 2013年第10期179-187,共9页
针对非谐振和谐振式带隔离的双向全桥DC-DC变换器的不同特点,推导了这两种DC-DC变换器功率传输的统一表达式,该功率表达式可以统一描述这两种不同拓扑的功率传输特性。针对隔离式双向全桥DC-DC变换器的开关器件在高频工况下的强迫开通/... 针对非谐振和谐振式带隔离的双向全桥DC-DC变换器的不同特点,推导了这两种DC-DC变换器功率传输的统一表达式,该功率表达式可以统一描述这两种不同拓扑的功率传输特性。针对隔离式双向全桥DC-DC变换器的开关器件在高频工况下的强迫开通/关断方式,带来较大的开关损耗,造成变换器效率下降的问题,本文以一种带隔离的LC谐振式DC-DC变换器为研究对象,提出了一种移相控制的DC-DC变换器控制策略,在该策略下,DC-DC变换器的功率器件能够实现零电压开通,并且通过谐振减小了功率器件的关断损耗,从而提高了系统的效率。仿真和实验结果验证了文中所提出控制策略的有效性。 展开更多
关键词 双向全桥DC—DC变换器 串联谐振 软开关 基波分析法 电压增益
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双Buck/Boost集成双有源桥三端口DC-DC变换器 被引量:25
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作者 孙孝峰 刘飞龙 +1 位作者 熊亮亮 王宝诚 《电工技术学报》 EI CSCD 北大核心 2016年第22期73-82,共10页
在传统的双有源桥变换器的基础上集成两个双向Buck/Boost电路,提出了一种双Buck/Boost集成双有源桥三端口DC-DC变换器,该变换器实现了桥臂开关管的复用,提高了功率密度。以光伏-蓄电池混合发电系统为例对该变换器拓扑进行分析,采用移相+... 在传统的双有源桥变换器的基础上集成两个双向Buck/Boost电路,提出了一种双Buck/Boost集成双有源桥三端口DC-DC变换器,该变换器实现了桥臂开关管的复用,提高了功率密度。以光伏-蓄电池混合发电系统为例对该变换器拓扑进行分析,采用移相+PWM进行控制,通过控制移相角实现输入与输出端口间功率传输,通过调节占空比来匹配输入端口电压等级,以实现光伏端口的最大功率点跟踪和平衡蓄电池端口的能量传递。分析了该变换器的工作原理、稳态与软开关特性,该变换器较大程度地改善了传统移相控制下DAB在移相角较小时的软开关条件,使得在宽工作范围内能够实现所有功率开关管的软开关。最后建立300W实验样机进行方案验证。 展开更多
关键词 多端口变换器 双向Buck/Boost电路 双有源桥电路 软开关 移相+PWM控制
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LCL谐振型双有源全桥双向DC-DC变换器分析与控制 被引量:19
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作者 周路遥 姜久春 《电力系统自动化》 EI CSCD 北大核心 2016年第19期82-86,93,共6页
研究了一种新型LCL谐振型双有源全桥双向DC-DC变换器。根据LCL谐振网络的基本特性,在双移相控制方式下,使得初、次级全桥的交流侧电压与电流同相位,实现了单位功率因数,基本可以消除双有源全桥变换器中普遍存在的回流功率。在时域波形... 研究了一种新型LCL谐振型双有源全桥双向DC-DC变换器。根据LCL谐振网络的基本特性,在双移相控制方式下,使得初、次级全桥的交流侧电压与电流同相位,实现了单位功率因数,基本可以消除双有源全桥变换器中普遍存在的回流功率。在时域波形分析的基础上,建立了各次谐波的交流等效模型,计算了各次谐波传输功率相对于基波传输有功功率的比值,并通过基波近似法进一步研究了变换器的功率传输特性。最后,设计了一台额定功率为3.6kW的实验样机,特征波形、回流功率的实验与分析结果吻合,并验证了其运行在宽负载电压和功率范围内的良好特性。 展开更多
关键词 双向dc-dc变换器 双有源全桥变换器 LCL谐振网络 单位功率因数 回流功率
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双有源桥四绕组变压器双向DC-DC变换器 被引量:7
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作者 刘飞龙 张涵 +2 位作者 孙孝峰 张绘欣 吴俊娟 《电工技术学报》 EI CSCD 北大核心 2019年第20期4272-4282,共11页
基于传统的双有源桥(DAB)电路在变压器一次、二次绕组均将中心抽头引出,分别连接到两侧分压电容中点处,提出一种具有四绕组变压器结构的双有源桥双向DC-DC变换器拓扑,其采用三重移相控制(TPS),在同时具有升降压增益特性的应用场合下,保... 基于传统的双有源桥(DAB)电路在变压器一次、二次绕组均将中心抽头引出,分别连接到两侧分压电容中点处,提出一种具有四绕组变压器结构的双有源桥双向DC-DC变换器拓扑,其采用三重移相控制(TPS),在同时具有升降压增益特性的应用场合下,保留了传统DAB优点的同时,两侧引出的中心抽头在低功率等级下又能够为一次、二次侧最差软开关条件的功率开关管提供零电压开通的反向电流,进一步拓宽了软开关范围。本文首先介绍了改进型双向变换器的拓扑演化过程及基本电路构成,通过对电路进行等效化简,推导出其三角形等效电路模型;其次对电路在TPS调制方式下的工作模式进行分类,并以正向模式(Ⅰ-1)A为例对电路的稳态工作过程进行分析;然后分析变换器软开关特性,在电压增益分别处于升降压特性时,分别以桥内移相角φ1与φ2作为主变量进行控制,能够保证全功率范围下的所有功率管的软开关实现;最后建立了1kW实验样机,验证了上述分析的正确性。 展开更多
关键词 双有源桥电路 双向dc-dc变换器 中心抽头变压器 移相控制 零电压开关
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双向全桥DC-DC变换器的回流功率特性分析 被引量:5
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作者 张国荣 罗闰三 +2 位作者 解润生 李智 张慧丽 《电气传动》 北大核心 2019年第1期33-38,共6页
为了减小双向全桥DC-DC变换器在传统单移相控制方式下进行功率传输时的回流功率,在传统单移相控制方式的基础上提出一种非对称占空比移相控制方式,该方式开关管的导通占空比不对称,不仅可以扩大传输功率的调节范围,还可以减小功率传输... 为了减小双向全桥DC-DC变换器在传统单移相控制方式下进行功率传输时的回流功率,在传统单移相控制方式的基础上提出一种非对称占空比移相控制方式,该方式开关管的导通占空比不对称,不仅可以扩大传输功率的调节范围,还可以减小功率传输过程中的回流功率与电流应力。分析传统单移相控制与所提出控制方法的工作原理,并对所提出的控制方法进行工作模态分析以及建立稳态数学模型。对比分析了传统单移相控制和所提控制2种方式下的回流功率,所提控制方式下的回流功率和电流应力相对较小,传输功率调节范围扩大。最后,通过仿真结果验证了非对称占空比移相控制方式在减小双向全桥DC-DC变换器回流功率方面的优越性。 展开更多
关键词 双向全桥dc-dc变换器 非对称占空比移相控制 回流功率 电流应力
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基于LLC谐振的新型软开关双向DC-DC变换器 被引量:13
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作者 易灵芝 李青平 +1 位作者 胡炎申 龙辛 《电力自动化设备》 EI CSCD 北大核心 2019年第12期21-27,共7页
为了进一步提升户用储能系统中电池端双向DC-DC变换器的功率密度和效率,提出一种基于LLC谐振的新型软开关双向DC-DC变换器。该变换器有效降低了变压器匝比,提高了转化效率,在非对称半桥拓扑下可实现双向LLC特性,变换器中所有开关管均能... 为了进一步提升户用储能系统中电池端双向DC-DC变换器的功率密度和效率,提出一种基于LLC谐振的新型软开关双向DC-DC变换器。该变换器有效降低了变压器匝比,提高了转化效率,在非对称半桥拓扑下可实现双向LLC特性,变换器中所有开关管均能实现软开关。同时该变换器结构简单,并可应用同步整流技术,具有效率高、成本低等优势。描述了所提变换器软开关的实现过程,进而分析了谐振特性和相关参数以及软开关的实现条件。最后制作了一台高压侧350~400 V、低压侧45~50 V的500 V·A实验样机,验证了所提变换器的有效性和实用性。 展开更多
关键词 户用储能 双向dc-dc变换器 LLC谐振 软开关 推挽半桥 倍压半桥
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双向全桥DC-DC变换器在船舶应急电源中的应用 被引量:2
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作者 石磊 陈亚娜 《舰船科学技术》 北大核心 2016年第5X期58-60,共3页
船舶应急电源对于保障船舶的安全可靠行驶起着重要的作用,可以在船舶供电系统故障时,及时为应急负载提供短时电力供应。本文对双向全桥DC-DC变换器的拓扑结构、工作原理和控制策略进行分析和研究,并尝试将变换器应用于船舶应急电源的应... 船舶应急电源对于保障船舶的安全可靠行驶起着重要的作用,可以在船舶供电系统故障时,及时为应急负载提供短时电力供应。本文对双向全桥DC-DC变换器的拓扑结构、工作原理和控制策略进行分析和研究,并尝试将变换器应用于船舶应急电源的应用场合。在此基础上,本文搭建了原理样机,并对主要的参数和波形进行测试,取得了预期的效果,验证了双向全桥DC-DC变换器在船舶应急电源中应用的可行性。 展开更多
关键词 dc-dc变换器 双向 全桥 软开关 应急电源
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电流型双有源桥式双向DC-DC变换器的建模与解耦控制 被引量:6
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作者 王归新 肖波涛 《电源学报》 CSCD 北大核心 2020年第3期71-79,共9页
对于电流型双有源桥式双向DC-DC变换器,分析了其工作原理与稳态特性。通过列出变换器半周期内的状态方程,对变换器进行小信号建模并推导出系统传递函数。由于系统在进行闭环控制时移相角与占空比之间的相互耦合会降低系统动态性能,因此... 对于电流型双有源桥式双向DC-DC变换器,分析了其工作原理与稳态特性。通过列出变换器半周期内的状态方程,对变换器进行小信号建模并推导出系统传递函数。由于系统在进行闭环控制时移相角与占空比之间的相互耦合会降低系统动态性能,因此需要采用解耦控制来解除二者之间的相互耦合,进而提出了一种稳态解耦控制策略。一方面通过建立相对增益矩阵来分析控制量与被控制量间的匹配关系来设计控制器,另一方面基于系统稳态过程增益矩阵得到系统稳态解耦矩阵,2个回路的相互影响通过加入系统稳态解耦矩阵而大大降低。最后通过仿真与实验对所提控制策略的有效性和合理性进行了验证。 展开更多
关键词 电流型双有源桥式双向dc-dc变换器 状态方程 小信号建模 解耦控制
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双有源全桥型DC-DC变换器建模及控制 被引量:4
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作者 黄雷 《天津职业技术师范大学学报》 2019年第4期17-20,共4页
针对能量双向流动的隔离型DC-DC变换器的设计及控制问题,以双有源全桥(DAB)型DC-DC变换器作为研究对象,以提高变换器动态性能为目标,进行系统建模及控制系统设计。在分析DAB型DC-DC变换器工作原理基础上,通过小信号建模方法推导出电流... 针对能量双向流动的隔离型DC-DC变换器的设计及控制问题,以双有源全桥(DAB)型DC-DC变换器作为研究对象,以提高变换器动态性能为目标,进行系统建模及控制系统设计。在分析DAB型DC-DC变换器工作原理基础上,通过小信号建模方法推导出电流环及电压环的传递函数,并根据传递函数分别设计了PI控制器。基于TI公司TMS20F28379D控制器的控制平台,在一台500 W的样机上进行了实验验证。实验结果表明:实验波形及数据与理论分析一致,验证了DAB型DC-DC变换器的功能及控制方法的正确性。 展开更多
关键词 双向dc-dc变换器 双有源全桥型变换器 小信号模型
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基于三重移相的双向全桥DC-DC功率特性分析 被引量:10
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作者 谷泓杰 江道灼 +3 位作者 尹瑞 黄帅 梁一桥 王玉芬 《中国电力》 CSCD 北大核心 2016年第7期122-127,共6页
为了提高双向全桥DC-DC变换器的效率,在现有的双重移相控制方式的基础上,一种三重移相控制方式被提出。主要分析三重移相控制方式的工作原理,以及该控制方式下的双向全桥DC-DC变换器工作模式,通过数学建模,推导相关的数学表达式,并分析... 为了提高双向全桥DC-DC变换器的效率,在现有的双重移相控制方式的基础上,一种三重移相控制方式被提出。主要分析三重移相控制方式的工作原理,以及该控制方式下的双向全桥DC-DC变换器工作模式,通过数学建模,推导相关的数学表达式,并分析了相关的变换器功率特性。同时,将三重移相控制方式与双重移相控制方式进行了对比。三重移相控制不仅保留了双重移相控制的优点,而且在实现降低变换器的电流峰值、电流有效值和无功功率,以及提高系统效率等方面具有更明显的优势。最后通过仿真验证了三重移相控制的优越性。 展开更多
关键词 移相控制 双向全桥DC/DC变换器 电流峰值 电流有效值 无功功率
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