Modeling and control of primary parallel isolated boost converter

Mira, C.; Hernandez, C.; Sen, Gokhan; Thomsen, Ole C.; Andersen, Michael A. E.

doi:10.1109/iecon.2012.6388766

Cited by 4 publications

(5 citation statements)

References 10 publications

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“…While working with batteries, the duty cycle to inductor current transfer function has a larger gain compared to a pure resistive load for the same power level, meaning that the inductor current is very sensitive to small duty cycle perturbations in case of battery applications [11]. The converter has to be started with minimum duty cycle without using synchronous rectification.…”

Section: Resultsmentioning

confidence: 99%

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Isolated Boost Converter with Bidirectional Operation for Supercapacitor Applications

Hernández

Mira²,

Sen³

et al. 2013

Journal of Power Electronics

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This paper presents an isolated bidirectional dc/dc converter based on primary parallel isolated boost converter (PPIBC). This topology is an efficient solution in low voltage high power applications due to its ability to handle high currents in the low voltage side. In this paper, the converter has been modeled using non-ideal components and operated without any additional circuitry for startup using a digital soft-start procedure. Simulated and measured loop gains have been compared for the validity of the model. On-the-fly current direction change has been achieved with a prototype interconnecting two battery banks. A second prototype has been constructed and tested for supercapacitor operation in constant power charge mode.

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Section: Resultsmentioning

confidence: 99%

“…Dc-dc converters interfacing this kind of energy storage elements need to be designed based on an accurate small signal model. This is due to the fact that the low value of the supercapacitor and battery series resistance makes the current flow in the converter to be very sensitive to duty cycle perturbations [11].…”

Section: Converter Modelingmentioning

confidence: 99%

Isolated Boost Converter with Bidirectional Operation for Supercapacitor Applications

Hernández

Mira²,

Sen³

et al. 2013

Journal of Power Electronics

Self Cite

View full text Add to dashboard Cite

show abstract

“…It can be observed that during the transition the current deviates from the reference value until the loop is able to compensate the error. The deviation in the current during the transition is caused by the change in the converter steady-state conditions and the sensitivity of the inductor current to duty cycle perturbations, as presented in [8]. This will increase the components current stress, which will reduce the converter reliability.…”

Section: Simulation Of Ppibc With Extended Voltage Range Operationmentioning

confidence: 99%

“…In battery loading applications, as presented in [8]- [9], the duty cycle-to-inductor current transfer function is heavily affected by the converter parasitic resistances due to the low value of the battery dynamic resistance. Circuit models taking into account parasitic resistances for both inductor charge (Fig.…”

Section: Transition With Pre-calculated Steady-state Duty Cyclementioning

confidence: 99%

“…13, are obtained by reflecting the secondary side impedances to the primary side and combining the two parallel full-bridge transformers to a single structure with an effective transformer ratio . State-space equations are derived based on the two operating states of the converter [8]. The state matrixes are calculated for the inductor charging and discharging subintervals as shown in (16) and (17).…”

Section: Transition With Pre-calculated Steady-state Duty Cyclementioning

confidence: 99%

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