Softswitching performance of dual active bridge dcdc converter r. Pdf combined pulsewidth modulation of dual active bridge. Largesignal modeling of threephase dual active bridge. The application is intended for the connection in parallel of an energy storage device, such as a battery, with photovoltaic pv cells, and then in series to the grid through another converter, but this time a. Design of phase shifted fullbridge converter with current doubler rectifier 4 design note dn 201 v1.
The increase demand of an intermediate storage of electrical energy in battery systems, in particular due to the use of renewable energy, has resulted in the need of bidirectional dcdc power converters with galvanic isolation. The proposed converter topology consists of two active hbridges and one highfrequency transformer. Performance optimization of a high current dual active. Pdf the bidirectional dual active bridge dcdc converter for. Design and control of a bidirectional dual active bridge dc. Hybrid modulation of bidirectional threephase dualactive. This paper proposes a control algorithm that controls a dcdc converter within a capacitorless battery charger for electric vehicles evs. George, kenny, design and control of a bidirectional dual active bridge dcdc converter to interface solar, battery storage, and gridtied inverters 2015. An overall study of a dual active bridge for bidirectional dc. An integrated threephase transformer for partial parallel.
Performance verification of dual active bridge dcdc converter. The use of this topology is proposed for applications where the power density, cost, weight, and reliability are critical factors. Control of active component of current in dual active bridge converter suyash sushilkumar shah. It is popular for bidirectional power conversion in applications ranging from solidstate transformers 2 to automotives 3. High voltage gain dual active bridge converter with an.
The bidirectional dual active bridge dcdc converter for photovoltaic application 1. Modular currentfed dualactivebridge dcdc converters. In hfl pcss, dualactivebridge dab isolated bidirectional dcdc converter ibdc serves as the core circuit. Modeling and optimization of dual active bridge dcdc. Figure2shows the two active bridges with dclink voltage of vin for the charger side and vbatt for the ev side as the battery voltage level. Ecen5817 lecture 44 university of colorado boulder. Phaseshifted, full bridge singlephase, dualactive bridge dualactive bridge in cllc mode based on this study, the dualactive bridge was chosen for implementation in this reference design, owing to its ease of bidirectional operation, modular structure, competitive efficiency, and power density numbers. Keywords threephase dual active bridge 3pdab, generalized averaging, largesignal analysis, electromagnetic transient, dcdc conversion 1 introduction there is a surge of interest in academic and industrial research on dc grids mainly due to their wellknown advantages over ac grids in a number of applications 1, 2. Highpower bidirectional dual active bridge and double dual.
Dual active bridge dab the dual active bridge is a bidirectional, controllable, dcdc converter that has high power capabilities comprised of eight semiconductor devices, a high frequency transformer, energy transfer inductor, and dclink. This reference design provides an overview on the implementation of a singlephase dual active bridge. A comparative evaluation of fullbridge based bidirectional dcdc converter is presented in this paper. Combined phaseshift and frequency modulation of a dualactivebridge acdc converter with pfc felix jauch, student member, ieee,andjurgen biela. Several modeling and current control techniques have.
This reference design provides an overview on the implementation of a singlephase dual active bridge dab dcdc converter. Dynamic modelling and control of dual active bridge bidirectional dcdc converters for smart grid applications segaran, d 20, dynamic modelling and control of dual active bridge bidirectional dcdc converters for smart grid applications, doctor of philosophy phd. Literature survey on modeling and simulation of fuel cell. As a twostage conversion of hflcmi pv system, the frontend dcdc converter with advanced technologies can help to meet the lifetime goals.
Xian jiaotongliverpool university department of electrical and electronic engineering sustainable energy technologies laboratory masters thesis defense presentation 20 december 11 the bidirectional dual active bridge dcdc converter for photovoltaic application wenlong jing supervisor. Dynamic modelling and control of dual active bridge bi. Modeling and optimization of bidirectional dual active. Pdf modeling of a dcdc converters is usually carried via smallsignal approximations with small disturbances taken in account at steady. Performance optimization of a high current dual active bridge. Dual active bridge dab dcdc converters have several attractive features including autoadjust bidirectional power flow, wide voltage gain range, and zero voltage switching zvson capability. Jul 06, 2019 general analysis of switching modes in a dual active bridge with triple phase shift modulation carlos calderon, andres barrado, alba rodriguez, pedro alou, antonio lazar, cristina fernandez. A comparative evaluation of full bridge based bidirectional dcdc converter is presented in this paper. The dual active bridge dab converters are widely used in the energy storage equipment and the distributed power systems. Dynamic modelling and control of dual active bridge bidirectional dcdc converters for smart grid applications segaran, d 20, dynamic modelling and control of dual active bridge bidirectional dcdc converters for smart grid applications, doctor of philosophy phd, electrical and computer engineering, rmit university. Here two conversion processes take place simultaneously, so it is called as a dual converter. The converter is controlled using phase shift modulation psm. This paper presents a systematic approach of the design considerations for a 3dab converter.
High voltage gain dual active bridge converter with an extended operation range for renewable energy systems zhe zhang, kevin tomasmanez, yudi xiao and michael a. One of the bridge works as a rectifier converts ac to dc, another half bridge works as an inverter converts dc to ac and connected commonly to a dc load. Softswitching performance of dual active bridge dcdc. Basic operation, control algorithm, advantages and disadvantages of several types of bidirectional converters are explained. Dualactive bridge series resonant electric vehicle charger. This work investigates the application of an acac dual active bridge converter for solid state transformer. Overview of dualactivebridge isolated bidirectional dcdc. Modeling and optimization of bidirectional dual active bridge dc. Pdf modeling and control of dual active bridge by fractional. Bridge a bridge b senseb ocda ocdb by vincenzo marano l6205, l6206, l6207 dual full bridge drivers modern motion control applications need more flexibility that can be addressed only with specialized ic products. This thesis investigates on the dcac dab series resonant singlestage 1. Design considerations for a highpower dual active bridge dc. Modeling of a dual active bridge series resonant converter dabsrc in this section, the principle of operation for a dabsrc is set forth as follows.
However, it has a limited softswitching range and a high peak current during low power transfer with traditional phaseshift modulation psm when there is a variation in the inputoutput voltage. The dual active bridge dab converter, shown in fig. Bidirectional, dual active bridge reference design for level. Pdf on jul 25, 2012, wenlong jing and others published the bidirectional dual active bridge dcdc converter for photovoltaic application. Simulation of dual active bridge converter for energy storage. Tida010054 bidirectional, dual active bridge reference. Pdf adaptive control of a threephase dual active bridge. Introduction of dual converter, types, and its mode of operations. In this research, a cascaded currentfed dualactivebridge cfdab dcdc converter is developed to achieve a long lifetime mediumvoltage pv system.
In a dual converter, two converters are connected together back to back. The charger is composed of an acdc converter connected to a threephase dab dual active bridge dcdc. Deadtime effect has become an apparent issue in highswitchingfrequency highpower dual active bridge dab dcdc converter. Apr 11, 2016 the bidirectional dual active bridge dcdc converter for photovoltaic application 1. Intuitive explanation of the dual active bridge dab youtube. Electrical engineering undergraduate honors theses. Based on the dual active bridge dab topology, the transformer windings on the highvoltagehv side are connected in series. This dissertation presents a comprehensive study of dual active bridge dab converters for solid state transformers ssts. April 1978 citizen of austria accepted on the recommendation of prof. Dual active bridge converter with pwm control in solid state transformer application by chenhao nan a thesis presented in partial fulfillment of the requirements for the degree master of science approved july 2011 by the graduate supervisory committees. Modeling of a dualactive bridge series resonant converter dabsrc in this section, the principle of operation for a dabsrc is set forth as follows. A dual active bridge is a bidirectional dcdc converter with identical primary and secondary side fullbridges, a high frequency transformer, an energy transfer. A control strategy for bidirectional isolated 3phase current.
Deadtime effect has become an apparent issue in highswitching frequency highpower dual active bridge dab dcdc converter. Generalized modeling and optimization of a bidirectional dual active bridge dcdc converter including frequency variation. Dab topology offers advantages like softswitching commutations, a decreased number of devices and high efficiency. Investigation on the dcac dual active bridge converter and its photovoltaic applications iii. Felix jauch and jurgen biela, member, ieee, this material is posted here with permission of the ieee. Sep 16, 2010 a dual active bridge dab bidirectional dcdc converter is a topology with the advantages of decreased number of devices, softswitching commutations, low cost, and high efficiency. The l6205, l6206, l6207 are dual full bridge drivers ics specifically developed to drive a wide range of motors.
Dual active bridge converter with pwm control in solid state. Wagh abstractdepleting fossil fuels and the environmental hazards. The dab converter is typically controlled by using socalled phaseshifted modulating method. Tech scholar, 2assistant professor, eee dept, vnr vjiet, telangana, india abstract. The bidirectional dual active bridge dcdc converter for. Dual active bridge converters in solid state transformers. An observerbased digital control system for individually. Highpower bidirectional dual active bridge and double. The closedloop output impedances of the converter under. The proposed converter topology consists of two active hbridges and one high frequency transformer. The proposed converter uses an aclink to transfer power, instead of the more conventional dclink, since it offers a significant reduction in the volume of the bulky inductor. Combined phaseshift and frequency modulation of a dual. This thesis explores the dual active bridge dab topology and implements it on a bidirectional dcdc converter. The ppdab converter was first proposed and researched in 4.
Dynamic modeling of a dual active bridge dc to dc converter. Performance verification of dual active bridge dcdc converter r. Design and control of a bidirectional dual active bridge. Phaseshifted full bridge dcdc power converter design guide. Modeling and optimization of bidirectional dual active bridge dcdc converter topologies a dissertation submitted to eth zurich for the degree of doctor of sciences presented by florian krismer dipl. This reference design provides an overview on the implementation of a single phase dual active bridge. Design of phase shifted fullbridge converter with current. A dual active bridge dab dcdc converter is suitable for bidirectional highpower transfer. The application it is intended for is the connection in parallel of an energy stor. The battery side voltage ranges from 11v to 16v while the fuel cell is. Control of active component of current in dual active. Dc converter suitable for high power density and high power applications, being a key interface between renewable energy sources and energy storage devices. Here two conversion processes take place simultaneously, so it.
The increased demand of an intermediate storage of electrical energy in battery systems, in particular due to use of renewable energy, has. An overall study of a dual active bridge for bidirectional dcdc conversion. Dual active bridge converter with pwm control in solid state transformer application abstract for the solidstate transformer sst application, a threestage configuration consisting of a pwm rectifier based acdc stage, a dual active bridge dab converter based dcdc stage and a pwm inverter based dcac stage offers several advantages. Abstract this thesis explores the dual active bridge dab topology and implements it on a bidirectional dcdc converter. General analysis of switching modes in a dual active bridge. This reference design provides an overview on the implementation of a single. Softswitching performance of dual active bridge dcdc converter. A typical application is for fuel cell vehicles where a bidirectional interface between a 12v battery and a high voltage dc bus is required. Phaseshifted full bridge dcdc power converter design guide abstract the phase shifted full bridge psfb converter is used for dcdc conversion in various applications, for example in telecom systems to convert a high voltage bus to an intermediate distribution voltage, typically closer to 48v. Design considerations for a highpower dual active bridge.
On smallsignal analysis and control of the singleand the dualactive bridge topologies georgios d. Modeling and optimization of bidirectional dual active bridge. Fourquadrant switch cells are used to ensure bidirectional power flow. However, the existence of switching nonlinearity and control delay can cause serious stability problem to the dab converters. Simulation of dual active bridge converter for energy storage system vuppalapati dinesh1, e. A dual active bridge dab bidirectional dcdc converter is a topology with the advantages of decreased number of devices, softswitching commutations, low cost, and high efficiency.
However, the 3pcfdab converter can be analyzed as the 3phase dab converter from the primary side to the active clamp circuit, and the second side can also be analyzed as a bidirectional buckboost converter. Thus, this paper, studies the stability of a digitally controlled dab converter with an output voltage closed loop controller. Design and control of a bidirectional dual active bridge dcdc. Such permission of the ieee does not in any way imply ieee endorsement of any of eth zurichs products or services. Design and optimization of threephase dualactivebridge converters for electric vehicle charging stations. Generalized smallsignal modelling of dual active bridge. Demetriades doctoral dissertation royal institute of technology department of electrical engineering electrical machines and power electronics stockholm 2005. A transformerless dual active bridge dcdc converter for. To overcome solve this difficulty, this paper proposes a new modulation strategy, combined pulsewidth. The dual active bridge dab converter is widely used in industrial applications where high power density, isolation and bidirectional power transfer are required. Dual active bridge dab dcdc converter c p c p c s c s q 1 q 3 q 5 q 7 l l 1. The dual active bridge dab is an isolated, high voltage ratio dc. Stability analysis of digitally controlled dual active bridge. General analysis of switching modes in a dual active bridge with triple phase shift modulation carlos calderon, andres barrado, alba rodriguez, pedro alou, antonio lazar, cristina fernandez.
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