As aforementioned, in the semifull bridge converter, a switch is added to the conventional halfbridge converter. Ganbased high efficiency bidirectional dcdc converter with 10 mhz switching frequency. Pdf in dc microgrid dcmg, the loads connected with converters under strict control areconsidered as cpls constant power loads. This paper presents the study of bidirectional dc to dc converter and comparing with the various existing method techniques. The use of bidirectional dc dc converter allow use of multiple energy storage, and the flexible dc link voltages can enhance the system efficiency and reduce component sizing.
Both galvanic isolation and voltage matching are usually performed by a magnetic transformer in power electronic. Because it is bidirectional, it does not require another dcdc converter or acdc converter to charge the battery. Us army tardec, 6501 east 11 mile road, warren, mi 483975000. For example, on of the dc dc converters convert the high voltage 200300v in the main battery to low voltage 12v for use in electrical equipment, while the other. Zero voltage switching can be achieved for all the power switches through proper modulation strategy design, therefore, the presented converter can. Isolated bidirectional dcdc converter for hybrid electric. In a traditional dc converter, the transmission of current is unidirectional, because the reverse breaks down in switching.
In this paper, a bidirectional ac dc converter is analyzed. There is a growing importance in bidirectional dcdc converters for interface battery with energy source. Bidirectional dc to dc converter is used as a key device for interfacing the storage devices between source and load in renewable energy. The converter applies a half bridge thyristor rectifier and a recuperating thyristor bridge instead of a braking resistor. Ganbased high efficiency bidirectional dcdc converter. A new bidirectional dc dc converter is designed and analyzed in this paper. A new control strategy aiming to minimize the system losses from a macroscopic point of view is presented. Design and control methods of bidirectional dcdc converter. Working principle analysis and control algorithm for. Application example of the eza series bidirectional dc dc converters. The combination of transistor q1 and antiparallel diode d1 forms the switch s1 as well as the. An overview of bidirectional dcdc converter topologies. A novel zvs bidirectional dcdc converter for fuel cell. The system uses two lm5170q1 current controllers and a tms320f28027f microcontroller mcu for the power stage control.
Dcdc converter for charging a 12v or 24v service battery in vehicles with a smart alternator regenerative braking, euro 5 and euro 6 engines bidirectional dcdc converter 9v36v 600w the dcdc converter will charge the auxiliary battery with a preset charge. Unless the dc to dc conversion limits the power, the output voltage tracks the voltage command. The proposed converter is designed in the manner of closed loop control. Later ibdc with the fly back and rcd snubbers, active clamp, and some. High voltage bus may be directly connected to the fuel cell or may be connected to it via an isolated high frequency dc dc converter. Bidirectional dcdc converter reference design for 12v48v automotive systems 3. This is to certify that the work in the thesis entitled modeling and control of bidirectional dc dc converter fed pmdc motor for hev applications by mahendra chandra joshi is a record of an original. Modeling and optimization of bidirectional dual active. The bidirectional dc dc converter 1 comprises an input stage 2 for converting a dc input voltage into a first ac voltage, a transformer 3 for transforming the first ac voltage into a second ac voltage, and an output stage 4 for converting the second ac voltage into a. Analysis and controller design of a universal bidirectional. Bidirectional dcdc regulator and supercapacitor charger.
A new highefficiency isolated bidirectional dc dc converter. Bidirectional dcdc converter topologies and control. Bidirectional dcdc converter that converts power between dc. This master thesis presents a bidirectional converter controlled by an energy management control system that is designed for a small scale residential application. Pdf the control parameter determination method for. A bidirectional converter is something where power can flow at both direction. The ltc3110 bidirectional buckboost dc dc regulator charges and balances a supercapacitor when a bus voltage is present for example 3. Converter measurement reference control signal power input port power output port.
Design and control methods of bidirectional dcdc converter for the optimal dclink voltage of pmsm drive taehoon kim, junghyo lee and chungyuen won abstract this paper shows the design and control methods of the bidirectional dcdc converter to generate the proper dclink voltage of a pmsm drive. Pdf modelling and analysis of bidirectional dcdc converter. Bidirectional dc dc converters are useful for switching between energy storage and use, for example, in electric vehicles. There are two basic configurations for this inverter. But the important thing in all case is that we need a bidirectional dc dc converter. Pdf bidirectional dc dc converters for energy storage. Bidirectional dc dc regulator and supercapacitor charger. Among the various topologies of full bridge isolated bidirectional dcdc converter ibdc, the transformerbased dcdc converter is a very famil. The bidirectional dc dc block implements a dc to dc converter that supports bidirectional boost and buck lower operation.
There are needs of galvanically isolated bidirectional dcdc converter to link different dc voltage bus and transfer energy back and forth. Supporting smart grids bidirectional dcdc converters. This is to certify that the work in the thesis entitled modeling and control of bidirectional dc dc converter fed pmdc motor for hev applications by mahendra chandra joshi is a record of an original research work carried out by him under my supervision and guidance in partial ful llment. The tida00951 design is an isolated bidirectional dc dc converter designed to exchange the power between a 300 to 400v dc bus and 48v battery banks. Ganbased high efficiency bidirectional dcdc converter with. Ganbased high efficiency bidirectional dc dc converter with 10 mhz switching frequency. This means that the onboard dcdc converter must be bidirectional and very efficient as well as highly reliable in order to run the complex control algorithms needed to ensure an energyefficient solution. A battery backup system application is used in this paper for the control of this converter.
Design a bidirectional dcdc converter and fabricate a 5kw poc unit to demonstrate the following. 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. Bidirectional full sic 200 kw dc dc converter for electric, hybrid and fuel cell vehicles winner of the semikron innovation award 2015. Modeling and control of bidirectional dc dc converter fed.
This paper presents a quasizsource based isolated bidirectional dcdc converter qzibdc for renewable energy applications. Bidirectional dcdc converters are used in applications where bidirectional power flow may be required. In this paper, first the operating principles of a nonisolated universal bidirectional dc dc converter are studied and analyzed. For the traction drive inverter in ice hevs, isolation is usually not required 7. Bidirectional dcdc converters bdc have recently received a lot of attention due to the increasing need to systems with the capability of bidirectional energy. The bidirectional dcdc converter comes from the com mon unidirectional dc dc converter and can achieve energy flow in two directions. Bidirectional dcdc converters bdc have recently received a lot of attention due to the increasing need to systems with the capability of bidirectional energy transfer between two dc buses.
In proceedings of 2017 ieee applied power electronics conference and exposition ieee. Bidirectional dcdc converters are useful for switching between energy storage and use, for example, in electric vehicles. For example, the bidirectional forward flybackflyback dcdc converter is a simple and low cost configuration. Pdf bidirectional dcdc converter srimathi r academia. A new highefficiency isolated bidirectional dcdc converter. The bidirectional dcdc converter is mainly divided into the isolated and nonisolated topology. Apart from traditional application in dc motor drives, new applications of bdc include energy storage in renewable energy systems, fuel cell energy systems, hybrid electric vehicles hev and. There is a growing importance in bidirectional dc dc converters for interface battery with energy source. Mosfets from different manufacturers wolfspeed and united. A bidirectional converter for battery based energy system. Isolated bidirectional dcdc converter for hybrid electric vehicle applications. The bidirectional dc dc converter block represents a converter that steps up or steps down dc voltage from either side of the converter to the other as driven by an attached controller and gatesignal generator. Topology principle of the bidirectional dc dc converter half bidirectional bridge topology combines the unidirectional buck and boost converters. Abstract bidirectional acdc converter for vehicletogrid v2g applications arjun raj prabu andhra sridhar marquette university, 2015 electric vehicles are growing at a rapid pace in the internal combustion engine.
An overview of bidirectional dc dc converter topologies and control strategies for interfacing energy storage systems in microgrids converter that can be used to interface a battery to the microgrid 3. The basic topology of the bidirectional dc dc converter is shown in fig. That means you can feed power to the load and the load can also feed the power back to the source. The ltc3110 bidirectional buckboost dcdc regulator charges and balances a supercapacitor when a bus voltage is present for example 3. An overview of bidirectional dcdc converter topologies and control strategies for interfacing energy storage systems in microgrids converter that can be used to interface a battery to the microgrid 3. Design considerations for a bidirectional dcdc converter. Supporting smart grids achieves a highefficiency conversion of 94% despite being isolated type through digital control verification tests are in progress in various locations for smart grids, which promote optimization of power supplydemand. The bidirectional converter uses one powertrain to. The bidirectional converter is composed of four leg floating interleaved buckboost converters to provide high power density and high dc dc voltage gain for grid connection. Bidirectional dcdc power converter design optimization. In this paper a fullbridge converter fbc for bidirectional power transfer is presented. Bidirectional dc dc converters bdc have recently received a lot of attention due to the increasing need to systems with the capability of bidirectional energy transfer between two dc buses. Bidirectional dcdc converter reference design for 12v48.
This paper proposes the bidirectional dcdc converter which employs the two bridge configuration resonant classe converters on the both sides of the isolating. Design and operation modes of the bidirectional dc dc converter 2. A bidirectional converter for battery based energy system for. Bidirectional converter bdc dc dc converter matlab. A bidirectional dcdc converter for renewable energy systems. The use of bidirectional dcdc converter allow use of multiple energy storage, and the flexible dclink voltages can enhance the system efficiency and reduce component sizing. Bidirectional acdc converter for vehicletogrid v2g. Recuperating mode of the converter is focused in the analysis, and it is shown that the converter exposes two operating modes within the recuperating mode, one characterized by negligible, and the other one. Quasizsource based bidirectional dcdc converter and its. Bidirectional dc dc converters for energy storage systems 165 voltage matching is also needed in many applications as it helps in designing and optimizing the voltage rating of different stag es in the system. The bidirectional converter is composed of four leg floating interleaved buckboost converters to provide high power density and high dcdc voltage gain for grid connection. Tida01168 bidirectional dcdc converter reference design. The bidirectional dc dc converter according to claim 1, wherein, when the bidirectional dc dc converter is operated under a stepdown mode, the load obtains a voltage conversion ratio of dv h 4 times in a duty cycle between 0 to 0. The converter utilizes a dual active bridge circuit with a quasizsource network on both sides, so the converter works as buckboost converter from either side.
Design a bidirectional dc dc converter and fabricate a 5kw poc unit to demonstrate the following. This paper presents a quasizsource based isolated bidirectional dc dc converter qzibdc for renewable energy applications. Such a converter is specially suited for applications like electric. April 1978 citizen of austria accepted on the recommendation of prof. Isolated bidirectional dc dc converter for hybrid electric vehicle applications. The proposed fbc is an isolated dcdc bidirectional converter, connected to a double voltage sourcea voltage bus on one side and a stack of supercapacitors sosc on the other side. Modeling and optimization of bidirectional dual active bridge. Because it is bidirectional, it does not require another dc dc converter or ac dc converter to charge the battery. Bidirectional converter bdc bidirectional dctodc converter allows power flow in both forward and reverse directions. The invention relates to a bidirectional dc dc converter for high voltages which is as simple and lowloss as possible. However, it is only suitable in low power applications because of its high voltage stress and leakage inductance energy. Pdf design and implementation of a bidirectional dcdc.
Bidirectional dcdc converters for energy storage systems. Dctodc converter that supports bidirectional boost and buck. The bidirectional dcdc converter block represents a converter that steps up or steps down dc voltage from either side of the converter to the other as driven by an attached controller and gatesignal generator. The presented power converter is capable of operating in all power transferring directions in buckboost modes. Design and control methods of bidirectional dcdc converter for the optimal dclink voltage of pmsm drive taehoon kim, junghyo lee and chungyuen won abstract this paper shows the design and control methods of the bidirectional dcdc converter to generate the proper dclink voltage of a. The tida00951 design is an isolated bidirectional dcdc converter designed to exchange the power between a 300 to 400v dc bus and 48v battery banks. The tida01168 reference design is a fourphase, bidirectional dcdc converter development platform for 12v48v automotive systems. The converter is based on an isolated cuk converter but features softswitching for all four switching devices. Therefore, in this paper a new bidirectional isolated dcdc converter with nonpulsating input and output current as shown in fig.
Hybrid electric vehicles hevs offer many advantages. Lm5170q1 subsystems use average current feedback for current control whereas the c2000. A bidirectional dc dc converter is a power converter that can work in two directions, charging mode to store energy into the battery and discharging mode to deliver electrical energy from the. Bidirectional flyback dcdc converter for battery system of the dc house project a thesis presented to the faculty of california polytechnic state university, san luis obispo in partial fulfillment of the requirements for the degree master of science in electrical engineering by austin luan june 20. An overview of bidirectional dcdc converter topologies and. Pdf bidirectional dc dc converters for energy storage systems. Bidirectional dcdc power converter design optimization, modeling and control junhong zhang abstract in order to increase the power density, the discontinuous conducting mode dcm and small inductance is adopted for high power bidirectional dcdc converter. Pdf bidirectional dcdc converters are used lots of industrial areas such as electric vehicles, uninterruptable power supplies, fuel cells, solar. Department of electrical and computer engineering, university of michigan, dearborn, mi 48128. A bidirectional dcdc converter can accomplish this to maintain a healthy battery and extend battery runtime. For the highvoltage side of the power supply, the power input voltage, diode, switch tube, and capacitor are. Working principle analysis and control algorithm for bidirectional dc. Bidirectional dcdc converter design guide texas instruments.
White paper design considerations for a bidirectional dcdc converter page 2 of 9 the isl81601 buckboost controller provides an easy and reliable solution to the onthe fly bidirectional dcdc. Mar 30, 2019 bidirectional converter bdc bidirectional dctodc converter allows power flow in both forward and reverse directions. A state space modeling of nonisolated bidirectional dcdc. The dcm related current ripple is minimized with multiphase interleaved operation. Bidirectional dc to dc converter is used as a key device for interfacing the storage devices between source and load in renewable energy system for continuous flow of power because the output of. Power levels range from very low small batteries to very high highvoltage power transmission.
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