A new simplified cascaded boost converter for high ratio and low ripple application

Sulthon, Muhammad; Damanik, Oscar Aristo; Efraim,; Rizqiawan, Arwindra; Dahono, Pekik Argo

doi:10.1109/icevt.2017.8323545

Cited by 4 publications

(2 citation statements)

References 5 publications

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“…For the converter shown in Figure 7, the output voltage of the first and second cells can be calculated by using ( 28) and ( 29) respectively. The output voltage for the third (last) cell takes into account the varying duty cycle and is given in (30). By changing ( 28)-( 30) to ( 14) and grouping each component, the 3-level total output voltage gain is given in (31).…”

Section: Controlling the Last Cellmentioning

confidence: 99%

“…Generally, this technique is completed by connecting several stages/levels of converter modules in two ways, namely cascade (multistage) and/or multilevel. Cascaded connection topologies are proposed in [29][30][31][32]. The main drawback of this connection is the difference in the voltage stress of one stage to the next stage converter; hence, it cannot achieve the modularity aspect.…”

Section: Introductionmentioning

confidence: 99%

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New Modular Multilevel DC–DC Converter Derived from Modified Buck–Boost DC–DC Converter

Aditama,

Ramadhani,

Ardriani

et al. 2023

Energies

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Raising the electrification ratio to 100% is still a formidable challenge in Indonesia, especially in the remote areas of the eastern part of the archipelago. A DC microgrid system is one of the most viable solutions to increase the electricity supply in remote areas, taking advantage of various renewable energy sources that are located near the rural load centers. A DC–DC power converter for a rural DC microgrid system needs to have a high voltage gain to facilitate the power conversion from low-voltage PV output to a high-voltage DC microgrid bus, a very low input ripple current to help maintain the PV or battery lifetime, and be highly modular for ease of transport and assembly. Many topologies have been proposed to obtain high voltage gain, very low ripple current, and modularity. However, they usually use either bulky and lossy magnetic components, are sensitive to component parameter variance and need special voltage-balancing techniques, or have different component ratings for their multilevel configuration which weakens the modularity aspect. This paper proposes a new modular multilevel DC–DC converter that is very suitable for rural DC microgrid applications based on a modified buck–boost topology. The proposed converter is easily stackable to achieve high voltage gain and does not require any voltage balancing techniques, thus enhancing the modularity characteristics and simplifying its control method. Moreover, the ripple current can be reduced by employing a multiphase configuration. This converter can also facilitate bidirectional power flow to serve as a battery charger/discharger. A comprehensive analysis of voltage gain and ripple current are presented to explain the inner workings of this converter. Finally, the performance of this converter is verified through simulation and experiment, showing the converter’s modularity, bidirectional power capability, and potential to achieve voltage gain and ripple-current requirements of the DC microgrid system.

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Section: Controlling the Last Cellmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

New Modular Multilevel DC–DC Converter Derived from Modified Buck–Boost DC–DC Converter

Aditama,

Ramadhani,

Ardriani

et al. 2023

Energies

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Design and implementation of modified SEPIC high gain DC‐DC converter for DC microgrid applications

Kathiresan¹,

Natarajan²,

Gnanavadivel³

2021

Int Trans Electr Energ Syst

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Summary In DC microgrids, power converters are essential for interconnecting and controlling power flow from the renewable sources such as solar PV, wind, fuel cell, and so on with the DC grid link. A lot of DC‐DC power converters available in the literatures are used to boost the low voltage from the renewable sources to the high voltage and also to track the maximum power from these sources. To boost the output voltage, high gain converters are required. To increase the static gain of the converters, many techniques such as using voltage lift, switched capacitor, coupled inductor, and so on are used. This paper presents a novel high gain DC‐DC converter that does not use the above techniques for voltage boosting. An inductive reactive element is added in series with a switch to boost the voltage gain. This inductor is connected in parallel with the source voltage when the switches are in ON position and in series with the source when the switches are in OFF position. The proposed converter is designed to produce the output voltage of 380 V for the input of 48 V. The converter is designed to handle the power of 1 kW. With the use of the voltage boosting element, a maximum voltage gain of 28 is achieved and the efficiency of converter is about 91.9%. The performance of the proposed converter is simulated and analyzed for various conditions such as variation in input voltage, reference voltage, and load power and also for motor loads. The experimental prototype model is also built and the hardware results are shown in this paper to validate the simulation results.

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Optimization of Multiphase Cascaded DC-DC Boost Converters

Makarim

Antares

Rizqiawan

et al. 2019

2019 6th International Conference on Electric Vehicular Technology (ICEVT)

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A new simplified cascaded boost converter for high ratio and low ripple application

Cited by 4 publications

References 5 publications

New Modular Multilevel DC–DC Converter Derived from Modified Buck–Boost DC–DC Converter

New Modular Multilevel DC–DC Converter Derived from Modified Buck–Boost DC–DC Converter

Design and implementation of modified SEPIC high gain DC‐DC converter for DC microgrid applications

Optimization of Multiphase Cascaded DC-DC Boost Converters

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