2014
DOI: 10.1049/iet-pel.2013.0881
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High step‐up DC–DC converter with ripple free input current and soft switching

Abstract: Fuel cells are used as a power generator in distributed generation and aircrafts applications. This paper proposes a new high step-up DC-DC converter with zero-voltage switching (ZVS) of switches and zero current switching (ZCS) of diodes, to be used as fuel cell's power conditioner. To have a ripple free input current, a coupled inductor can be used at the input side of the converter. The voltage gain of the converter is calculated and required conditions for soft switching have been presented. The voltage st… Show more

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Cited by 32 publications
(15 citation statements)
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“…The voltage and current waveforms of the diodes D 4 and D 5 are shown in Figure 9B. From (27), the voltage stress of the diodes Figure 10A shows the voltage stress and current of the diodes D 1 and D 2 . From (24) and (25), the voltage across the diodes D 1 and D 2 are approximately 40 and 30 V, respectively, which are close to the experimental results.…”
Section: Resultsmentioning
confidence: 99%
See 1 more Smart Citation
“…The voltage and current waveforms of the diodes D 4 and D 5 are shown in Figure 9B. From (27), the voltage stress of the diodes Figure 10A shows the voltage stress and current of the diodes D 1 and D 2 . From (24) and (25), the voltage across the diodes D 1 and D 2 are approximately 40 and 30 V, respectively, which are close to the experimental results.…”
Section: Resultsmentioning
confidence: 99%
“…The power loss of each switch contains switching loss and conduction loss. The switching loss can be obtained as the following equation PLossswitching=12Vdsfalse(Iontr+Iofftoff2false)fs. …”
Section: Efficiency Analysis and Comparisonmentioning
confidence: 99%
“…Flight data recorded for the CMET during a flight in Mexico City [1] measured ambient relative humidities between 0-75%. An injection of water into the cathode inlet can be accounted for by adding the enthalpy input term, H w,in , H w,in =ṁ v,ca,in C p,lw (T ca,in − T o ) + h f g,Tca,in , (25) to the change in enthalpy in the cathode, ∆H w,ca from (19), whereṁ v,ca,in =ṁ a,ca,in M w φ ca,in p sat,Tca,in M a (p ca,in − φ ca,in p sat,Tca,in ,…”
Section: Parameter Identification Resultsmentioning
confidence: 99%
“…While the voltage needs of the CMET are greater than a single cell PEMFC stack can provide, parallel work is considering a step up DC/DC converter, as deployed by other authors in [23], [24], [25], to reduce stack mass. As a result, a single cell PEMFC stack is deployed here.…”
Section: A Experimental Hardwarementioning
confidence: 99%
“…By substituting Equations 12 and 18 in Equation 35, the relation of the main switch current in resonant interval can be achieved as follows. By substituting Equations 12 and 18 in Equation 35, the relation of the main switch current in resonant interval can be achieved as follows.…”
Section: Turn-on Time Of the Auxiliary Switchmentioning
confidence: 99%