Hybrid structured buck converter with ripple cancellation and improved efficiency

Hafeez, Kamran; Dutta, Ashudeb; Singh, Shiv Govind; Kumar, K. S. Suresh; Avalur, Krishna Kanth Gowri; Sai, V. H.

doi:10.1109/indcon.2013.6726113

Cited by 2 publications

(3 citation statements)

References 13 publications

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“…Many designers attempt to decrease the value of ESR by connecting many capacitors in parallel. However, this approach increases the cost and size of the converter, making it impractical [43].…”

Section: A Ripple Minimization Using Passive Filtering Techniquesmentioning

confidence: 99%

“…This technique, however, results in a fourth-degree system, increasing the complexity of the controller. As the order of the filter increases, the control stability of systems decreases, impacting overall performance [43]. In short, the passive filtering technique in DC-DC converters leads to an increase in component count, resulting in converters of higher weight, volume, and cost.…”

Section: A Ripple Minimization Using Passive Filtering Techniquesmentioning

confidence: 99%

“…constant current ripple can cause a supercapacitor to overheat, decreasing its lifespan [25]. Voltage and current ripples also affect the resolution and precision of measurement instruments in power electronic converters, which are commonly used to interface ESSs with electric power networks [26]. Conduction losses are also created in passive components and proportionally increased with higher current ripples.…”

Section: Introductionmentioning

confidence: 99%

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Ripple-Free Multiphase Interleaved Stacked Converter for High-Power Applications

Alharbi

Dahidah

Ali

et al. 2022

IEEE Trans. Power Electron.

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A novel control technique that guarantees a ripple-free output current and voltage of a DC-DC multiphase staked interleaved converter is proposed. The conventional multiphase interleaved converters have been extensively used in various applications. However, ripple cancellation in these converters solely depends on the number of phases and can only be achieved at specific duty cycles. On the other hand, wide-range and ripple-free output are important paramount features for many modern applications. Therefore, the presented converter aims to combine the advantages of both the multiphase interleaved and the stacked converters into a single-unit converter suitable for high-power applications. Ripple-free output current/voltage is always guaranteed regardless of the number of phases and duty cycle values. This feature is accomplished by adding a fractionally-rated phase-leg to the conventional multiphase interleaved converter and modulating it with the proposed control approach. The Configurable Logic Block (CLB), a state-of-the-art tool developed by Texas Instruments, is utilized to reduce the hardware size of the entire conversion system while increasing its speed and flexibility. Extensive simulation studies are carried out to confirm the functionality of the proposed control scheme. A laboratory porotype is developed to validate the effectiveness of the proposed control method experimentally. With only a few more components, significant reductions in output ripples are achieved. 1

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Section: A Ripple Minimization Using Passive Filtering Techniquesmentioning

confidence: 99%

Section: A Ripple Minimization Using Passive Filtering Techniquesmentioning

confidence: 99%