Abstract– Inautomotive applications conventional power take-off system has shown somedisadvantages such as capable of consuming high fuel with very minimumefficiency. Hence, power take-off system is electrified and it is used inspecialty vehicle application which requires high gain step-up DC-DC converter.A new emerging topology for high voltage gain step-up DC-DC converter usingresonant technology has been proposed in this paper. The converter in additionhas the capacity of peak voltage gain with long range of input range; which a huge benefits of lowinput current ripple, reducing current stress in switching devices andtransformer, ZVS in two power MOSFETs and ZCS in the rectifier diode operationover the full load range and high efficiency. Interleaved step-up topologyhelps the circuit to reduce the stress on the components while it alsodecreases the transformer requirements.
Series resonant tank is used to achieveZVS and ZCS as well as extended voltage control. Detailed design analysis showsthe impact of the transformer turns-ratio and resonant tank to the othercircuit components. The given currentripple input is also calculated and it is based on the range of duty cycle atoperating condition. A 2kW prototype has been built according to the designrules. Experimental results are used to verify the circuit operation and designanalysis. A peak efficiency of 95.5% has been achieved for the prototype and itshows an efficiency improvement comparing with different methodologies.
Keywords: resonant, DC-DCconverter,ZVS, ZCS, low stress.Abbreviation:ZVS: zero voltage switching, ZCS: zero current switching, ePTO: electronicpower take-off.I. INTRODUTIONIn several applications like automotive systems Power take and off(PTO) system which refers to the system that retrieves or takes power fromengine places such that the inner combustion engine (ICE) the shaft to drivevehicle accessories. Power takeoff system is wide employed 1in thespecialty vehicles, like utility truck, tractors, construction vehicles, etc.In 1these vehicles, there are several electrical loads to bedriven by the power takeoff system so the shaft of the ICE is usually connectedto a generator. 1Some of the key challenges of this power takeoff 1systeminclude low potency, high consumption of the fuel within the 1ICErunning at idle, system maintenance and lifetime. The processed Electrificationduring this power takeoff system may be a sensible resolution to address thesechallenges.
1With the event of energy storage system and powerelectronics technology, now it’s potential to understand the electrical powertake-off (ePTO) system in such vehicles and its application are often expandedto alternative kinds of vehicles like automobile, long haul trucks, transitbus, etc. that have many electrical accessory masses. The aim of ePTO system isvictimization electric power supply like battery and electrical device to drivethe vehicle electrical accessories whereas the ICE solely provides propulsionto the wheel. it’ll greatly cut back the fuel consumptions at the work site.The ePTO system desires power converter that will transfer the lower voltagepower from battery or electric cell to drive the high voltage electricalmasses. In this method gain of high voltage increase DC to DC converters becamea vital a part of such application.
A new topology for high voltage gain DC-DCconverter with high input current introduced in this paper. 1Inthis topology interleaved configuration helps the circuit to achieve a lowcurrent ripple and reduces the current stress of the device. Transformerturns-ratio and current stress are relatively low. 1Thetransformer leakage inductance acts as the resonant inductor so 1thatit helps to relieve the voltage spike issue as well as achieve a highefficiency. Zero Voltage Switching and Zero Current Switching can be achieved thereforein order to maintain the over the entire load range which tends maintain a efficiency at maximum range..II.
DESIGNIDEASB. Lequesne et al, The price of the auto has broadenedrecords. Electric and cross breed automobiles are simply excellent a bit achunk of it, though right now the most discernible and the only getting themost fixation in fashionable media.
This paper will give attention to theunwinding of the story, i.e., components of transportation zap as opposed topass breed or totally electric powered impetus approaches. Cutting-edge boost(ultimate 10-20 years) and cutting-edge paintings at the jolt of streettransport, from case to powertrains, will be checked on with a factor of convergenceon electromechanical frameworks.
within the method, the various difficultiesengineers have triumph over or have yet to decide may be featured, along thesetraces representing the distinct elite strategies electrical designing ismaking its test in conveying greater development, extra viable, more at ease,and first-rate way of private transportation 1. F. Shang, M. Krishnamurthy, and A.
Isurin, electric electricity takes-off frameworks in vehicle require the gadgetof low voltage excessive gift improve up DC-DC converter with an over the topvoltage accumulate. Analysts have assessed enhancements for prime affectivityand minimum effort outlines. In this paper, a unique topology is suggested thathas the potential of giving a high voltage increase over an expansive scope ofyield power. It moreover has fewer extras and cuts stretch.
Critical operationof the topology had been presented and checked with the aid of activity in PSIM2. X. Kong and A. Khambadkone, Aninterleaved contemporary-sustained complete scaffold (ICFFB) dc-dc converter isproposed on this paper has low input display swell to satisfy the gasoline cellphone wishes. Via interleaving indifferent CFFB converters with parallel dataand association yield association, each data modern-day swell and yield voltageswell may be decreased. Additionally, the scale of the appealing additionalgadgets and gift worry of the semiconductor units at the input function arefurthermore delivered down.
So additionally, littler voltage score frill can beused on the yield aspect. Only a single automatic signal processormicrocontroller is utilized to create section moved door flags and to put incompel a fell superior manage process. The great parts of the proposedconverter are excessive affectivity, little inactive thing estimation, andlittle information show swells 3. H.- L.
Do et all, the manager of theproposed converter is completed with the awry heartbeat width tweak approach.The proposed converter accomplishes 0-voltage changing (ZVS) of all powerswitches. 0-current replacing (ZCS) of yield diodes can likewise be finished.The proposed converter can outfit excessive-voltage accomplish and the voltagesover the semiconductor instruments are simply cinched. Consistent kingdomexamination of the proposed converter is given.
A lab version of the proposedconverter is produced, and its exploratory results are accommodated validation4. 1W.Chen, X. Wu, L. Yao, W. Jiang, and R. Hu, the fast development of giganticscale sustainable force 2sources and HVDC matrix, it is apromising alternative to accomplice the inexhaustible energy resources to theHVDC lattice with an unadulterated dc method, in which excessive-existencehigh-voltage assignment up dc-dc converters are the vital factor tools to transmitthe electric life.
This paper proposes a resounding converter which isaffordable for framework connected sustainable electricity sources. Theconverter can accomplish inordinate voltage get making usage of a LC parallelresounding tank. it is described with the manual of zero-voltage-replacing(ZVS) turn-on and nearly ZVS kill of maximum critical switches comparable tozero-showcase turning turn-off of rectifier diodes; additionally, the similarvoltage fear of the semiconductor devices is downsize than other complete boostup converters. The operation statute of the converter and its completeparameter preference is offered on this paper. The operation widespread of theproposed converter has been productively permitted by means of using reenactmentand test final results 5.III. EVALUATION INDEX SYSTEM A spic and span competitor topology for pinnaclevoltage accomplish task up DC-DC converter the use of thunderous innovation hasbeen proposed.
also to its excessive voltage get and extensive enter run, itfurthermore brings the blessings of low info display swell, diminishing modernworry in replacing devices and transformer, ZVS in lifestyles MOSFETs and ZCS within therectifier diode operation over the complete load run and inordinateproductiveness. In this topology interleaved arrangement encourages thecircuit to advantage a low present swell and decreases the prevailing worry ofthe tool. Transformer turns-share and present anxiety are surely low. Thetransformer spillage inductance is going about because the thunderous inductorall collectively that it diminishes the voltage spike issue inside the sameclass as secure an over the top productiveness. ZVS and ZCS can likewise beexecuted over the complete load variety to preserve up an inordinate talent.
Advantages are,• In case of current in terms of ripplecurrent is very low.• Capable of reducing the stress current inthe electrical appliances. • The ratio between stress current and no ofturns in transformer ratio are comparatively less.IV. SYSTEM DESIGNResonant converterA typecontains power converter method which is obtained by resonant converter this isa type of electric power converter which contains a related network consistof inductors integrated with capacitors this is called a “resonanttank”, tuned to resonate at a specific frequency. Many applications inelectronics, in integrated circuits.
There aremultiple types of resonant Converter:-1 Inverterwith series resonant2 Inverterwith Parallel resonant3 Type named ClassE Resonant Converter4 Type named ClassE Resonant Rectifier5 ResonantConverter with Zero Voltage Switching Zero Current Switching Resonant Converter6 Dual QuadrantZero Voltage Switching ResonantConverter7 Resonantdc-link inverter 4.1. DC-DC converter (Chopper)Choppermakes use of high speed to attach and disconnect from a supply load. A constantDC voltage is utilized intermittently to the supply load by way of alwaystriggering the vigor change ON/OFF. The interval of time for which the vigorswitch stays ON or OFF is known as the choppers ON and OFF state occasions,respectively.Choppersare more commonly utilized in electric cars, conversion of wind and solarenergy, and DC motor regulators.
Classificationof ChoppersDependingon the voltage output, choppers are classified as ? I. Step Up chopper(boost converter) II. Step DownChopper(Buck converter)StepUp/Down Chopper (Buck-boost converter). CircuitDiagram Fig.1.
Proposedresonant DC-DC converter topology for high voltage gain. 4.2.Operation of Proposed Converter The operations of the proposed converter are explained asfollows with different modes of operations. OPERATION MODES For D = 0:5 Interval 1 (t0 – t1): At time t0, present within theresonant inductor or gradually level changes from zero in the optimisticdirection. For the period of the interval, S1 and S4 which are switched to ONcondition.
The detailed description shows in the figure 2(a). for the value ofD=0.5. The current in inductor L1 rises via S1 to retailer vigor, while thepresent in L2 costs C2 by way of S4. C1 is hooked up to the transformer mostimportant side via S1 and S4. It presents vigor via the design of resonantcircuit that weight and the predominant aspect voltage V1 = VC1.
At this stagewhich means end of specific interval, the resonant present iLr attainslevel 0 t1. On representing in this limit zero interval, the present in S1 andS4 is given by (1) and the systematic waveforms output described. Fig.2 (a) For D = 0:5 Interval 2 (t1 -t2): At instantt1, S1 and S4 are turn off and S2 and S3 these switches are switches ON. The systematicdesign of equivalent circuit is described in figure 2 (a).
The designed circuitworks similarly to given interval 1. The resonant current iLr which has certain limitup to zero interval which goes to the negative half cycle and finish to zero atthe end stage of the interval. The primary side voltage V1 = VC2. In thisinterval, the current in S2 and S3 is given by (2) and the waveforms are shown.For D < 0:5For D < 0:5 operations, Fig.show that there is a period when the resonant current iLr is zero. In thismode, the resonant current iLr Fig.
2 (b) ForD < 0:5 The following mode of conductionprovides discontinuous mode of operation. The conduction mode depends up onthree periodic definitions, Ton is the time period this is when the primaryside voltage is not zero, while the time T0 is the time when the transformervoltage is zero. In this mode, Ton = DTs and T0 = (0:5D)Ts. Time T1 is definedas the ratio of time period when the transformer voltage zero for resonantcurrent decay to the zero during specifictime period T0. There are six intervals in this operating mode. Using thissymmetrical operation of the circuit, only the positive cycle is analyzed. The analyzed Interval 1 betweenthe time (t0 - t1): During this interval, the circuit operates similarly to theinterval 1 for D = 0:5 operation mode. S1 and S4 are turned on.
The resonantcurrent iLr rises from zero but ends at instant t1 instead of going back tozero because Ton is less than half of the resonant cycle. Fig.2 (c) ForTon = DTs Fig.2 (d) ForD > 0:5 Interval 2 (t1 – t2): At immediatet1, S1 is become off and S2 is grown to become on. Throughout this interval, S2and S4 are become on together.
The identical circuit is shown. The current ininductor L1 and L2 costs C1 and C2 respectively at the same time thetransformer foremost facet is shorted through S2 and S4. Resonant present iLrdecays so this tends and attains faster and attains time interval during thisinterval and returns to zero after time interval T1 (mentioned by way of on thespot t2). On this interval, the present in S2 and S4 is given and the waveforms.Interval three (t2 -t3): S2 and S41these states are already in ON state present in inductor L1 andL2 performs charging state C1 and C2. Current flow is ideal in the resonantwhich means no current in resonant tank in the course of 1thisperiod.
The burden present is furnished by using the filter capacitors. Thesimilar circuit is proven in Fig. During this interval, the current in S2 andS4 is given through (4) and the 1waveforms are proven.For D > 0:51For D >0:5, as shown in Fig, the resonant present iLr can be in DCM mode just like D< zero: 5 mode. On this mode, Ton = (1 - D) Ts and T0 = (D -0:5) Ts. Thereare additionally six intervals in this operation mode and interval 1 and 4 arethe equal as D < zero: 5 modes.Interval 2 (t1 -t2): Atinstantaneous t1, S4 is become off and S3 is become on.
During this interval,S1 and S3 are turned on concurrently. The systematic equivalent circuit isshown in Figure is described as follows in 2(d). Both L1 and L2 retailer vigor from the sourceeven as C1 and C2 are connected in series to the transformer as primary partand it sees zero internet voltage. Fig.
2 (e)The resonant current returns tozero after time T1 (denoted by on the spot t2). In this interval, the presentin S1 and S3 is given via (5) and the waveforms are shown in Fig. Fig.2 (f)Interval three (t2-t3): S1 and S3maintain turning on and present in inductor L1 and L2 increase to retailervigor at the same time the resonant current stays at zero. The weight presentis offered by way of the filter capacitors. ARCHITECTUREDAIGRAM ANDSIMULATIONS5.1.PROPOSED CIRCUIT: Fig.
3 Simulation of proposed resonantDC-DC converter topology for high voltage gain.OUTPUTVOLTAGE WAVEFORM Fig.4 Output voltage waveform5.2.EXPECTED INPUT AND EXPECTED OUTPUTHere the Input given to the circuit is 24VDC and the output got is 350V DC 5.3.
ADVANTAGES Ø Inducesless and very low ripple current.Ø Device strain current is reduced Ø Comparativelylow transformer turns to current stress ratio. 5.4.MOSFET GATE DRIVERThe high And Low side Driver (IR2112) is an excessivevoltage and current, high speed energy MOSFET and IGBT driver with unbiasedexcessive and 4low side referenced output channels. Proprietary HVICand latch immune CMOS technologies enable ruggedized 4monolithicdevelopment. Logic inputs are suitable with common CMOS or LSTTL outputs, allthe way down to 3.
3V good judgment. The final efficient output for drivers forfeature with a high pulse that present buffer stage designed for minimal drivergo 4conduction. The mentioned propagation delays are specifically matchedwith reference also tends to simplify use in excessive frequency functions. 1Thefloating channel can be used to drive N-channel vigor MOSFET or IGBT within theexcessive part configuration which operates as much as required volts inbetween 400v to 600v.The motive force circuit is used to pressure thebi-directional converter switches where in this assignment the converter actsas a shunt energetic filter (2-quadrant) for harmony vigor factor operation andthe dc voltage legislation. Fig.5 Mosfetgate driver VI. APPLICATIONS• In industrial photovoltaic and fuel Cell• Generation and energy storage Systems• High-Intensity Discharge Lamp (Hid), • Source with Dc Back-Up Energy Systems usedfor storage.
• Hybrid and Electric Vehicles.VII. CONCLUSIONA better performance for specificapplications which consumes low input voltage and also with high current fortransportation appliances which has capability of with stand in high rang ofvoltage gain that have very low transformer turns to ratio and the current strainon the transformer is greatly limited by the usage of an methodology by interleavedstep up design. It makes and leads to a reduced copper, iron loss and also withsimple design of flux design, etc.
In additionally for designing simplifiedtransformer design with low turns ratio. In our project we implemented the proposeddesign of resonant technology which helps in achieving Zero Voltage Switchingin the active switches and Zero Current Switching this posses active switchingwith increased efficiency by reliving rectifier diodes and switches. Thismethod not only increases efficiencyalso it is help to convert EMI relieving issues under frequency at high peak.Beside to low voltage strain with low voltage rating devices which tends toconduction loss decreases significantly less.
Our prototypic experimental setupachieves higher efficiency of 95.5% respect to input voltage and load range.From the measured characteristics of the proposed topology, it can be concludedthat this topology can be well adopted in the ePTO system for various hybridelectrical and industrial applications. VIII. REFRENCE1Fei Shang, Geng Niu, Mahesh Krishnamurthy. “Design and Analysisof a High-Voltage-Gain Step-Up Resonant DC–DC Converter for TransportationApplications”, IEEE Transactions on Transportation Electrification, 20172 B. Bilgin, P.
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