Modelling and dynamical analysis of a DC–DC converter with coupled inductors

D’Amico, María Belén; González, Sergio

doi:10.1007/s00202-019-00757-1

Cited by 9 publications

(7 citation statements)

References 22 publications

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“…This expression will be consider here as the gain achieved when operating in CCM. However, as demonstrated in D'Amico and Gonz alez, 26 the conversion ratio in CCM changes slightly with the load resistance due to its influence on the current commutation modes. Figure 3 illustrates the critical limits between DCM and CCM operation as a function of d and β, considering different n values greater and smaller than unity.…”

Section: The Critical Condition: Limit Between Ccm and Dcmmentioning

confidence: 92%

“…However, the voltage gain can be higher than that obtained by a single boost stage. 26 For the theoretical developments, it is considered as follows:…”

Section: Operation Of the Cbc In Dcmmentioning

confidence: 99%

“…33 Due to the evident simplicity of this dynamic, it is not necessary to take into account any special consideration in the design of conventional control loops. 31 Thus, for example, output voltage regulation could be carried out by following linear control techniques as was shown in D'Amico and Gonz alez 26 for the CBC operating in CCM.…”

Section: Steady-state Responsementioning

confidence: 99%

“…But, so far, the only known results correspond to the converter operating in continuous conduction mode (CCM). 26,27 In general, virtues of the DCM operation are given by the high voltage gains without setting extreme duty cycles, the lower losses due to inverse recovery current of the diode, the reduction of the inductor values, and the first-order dynamical behavior. Moreover, this mode of operation presents the particular property of making the converter operate as a constant power source.…”

Section: Introductionmentioning

confidence: 99%

“…Developments in DCM can open the door to other beneficial designs and applications. But, so far, the only known results correspond to the converter operating in continuous conduction mode (CCM) 26,27 …”

Section: Introductionmentioning

confidence: 99%

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Analysis of a coupled‐inductor double‐boost dc‐dc converter operating in discontinuous conduction mode

González

D’Amico

2022

Circuit Theory & Apps

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In this article, the steady‐state and dynamical behavior of a coupled‐inductor doble‐boost dc‐dc converter (CBC) operating in discontinuous conduction mode (DCM) is discussed. The CBC makes use of the magnetic coupling between the windings of two boost stages connected in cascade to achieve high voltage gains. Developments given here shown that the voltage stress on semiconductors can be reduced to values lower than the output voltage by selecting the relation between windings adequately. Moreover, the derivation of an averaged model predicts that the converter presents a first‐order dominant response at low frequencies. These properties add to other important CBC advantages such as low component count, high efficiency, and simple implementation and design. The operation in DCM is very attractive for applications where the primary source acts as a current generator, as in the case of photovoltaic panels or constant power loads. Based on the results, the CBC can be seen as an immediate substitute of the classical boost converter when high dc‐dc voltage gains are required. Different tests carried out on an experimental set‐up corroborate the analytical findings.

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Section: The Critical Condition: Limit Between Ccm and Dcmmentioning

confidence: 92%

“…However, the voltage gain can be higher than that obtained by a single boost stage. 26 For the theoretical developments, it is considered as follows:…”

Section: Operation Of the Cbc In Dcmmentioning

confidence: 99%