Pulse Phase Shift Based Low-Frequency Oscillation Suppression for PT Controlled CCM Buck Converter

Dongsheng Yu; Yisen Geng; Herbert H.C. Iu; Tyrone Fernando; Ruidong Xu

doi:10.1109/TCSII.2018.2863698

Pulse Phase Shift Based Low-Frequency Oscillation Suppression for PT Controlled CCM Buck Converter

Dongsheng Yu, Yisen Geng, Herbert H.C. Iu, Tyrone Fernando, Ruidong Xu

School of Engineering

Research output: Contribution to journal › Article › peer-review

10 Citations (Scopus)

Abstract

Pulse train (PT) control has the advantages of simple structure, fast transient response, low cost, and free compensation network. However, for the power converters operated in continuous conduction mode, undesired low-frequency oscillation of output voltage will be brought about by PT control. To resolve this issue, the pulse phase shift based PT (PPS-PT) control method is newly proposed in this brief and applied in the buck converter. The approximate discrete time model of PPS-PT controlled buck converter is established, and the bifurcation diagrams of output voltage altering along with the difference of inductor current boundaries and load resistance are drawn to show the operation characteristics of the converter. Simulation and experimental results indicate that the proposed PPS-PT method can provide attractive control performance with the advantages of very simple implementation, small output voltage ripple, and wide load range.

Original language	English
Article number	8432055
Pages (from-to)	1465-1469
Number of pages	5
Journal	IEEE Transactions on Circuits and Systems II: Express Briefs
Volume	65
Issue number	10
DOIs	https://doi.org/10.1109/TCSII.2018.2863698
Publication status	Published - 1 Oct 2018

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abstract = "Pulse train (PT) control has the advantages of simple structure, fast transient response, low cost, and free compensation network. However, for the power converters operated in continuous conduction mode, undesired low-frequency oscillation of output voltage will be brought about by PT control. To resolve this issue, the pulse phase shift based PT (PPS-PT) control method is newly proposed in this brief and applied in the buck converter. The approximate discrete time model of PPS-PT controlled buck converter is established, and the bifurcation diagrams of output voltage altering along with the difference of inductor current boundaries and load resistance are drawn to show the operation characteristics of the converter. Simulation and experimental results indicate that the proposed PPS-PT method can provide attractive control performance with the advantages of very simple implementation, small output voltage ripple, and wide load range.",

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AU - Fernando, Tyrone

AU - Xu, Ruidong

PY - 2018/10/1

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AB - Pulse train (PT) control has the advantages of simple structure, fast transient response, low cost, and free compensation network. However, for the power converters operated in continuous conduction mode, undesired low-frequency oscillation of output voltage will be brought about by PT control. To resolve this issue, the pulse phase shift based PT (PPS-PT) control method is newly proposed in this brief and applied in the buck converter. The approximate discrete time model of PPS-PT controlled buck converter is established, and the bifurcation diagrams of output voltage altering along with the difference of inductor current boundaries and load resistance are drawn to show the operation characteristics of the converter. Simulation and experimental results indicate that the proposed PPS-PT method can provide attractive control performance with the advantages of very simple implementation, small output voltage ripple, and wide load range.

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Pulse Phase Shift Based Low-Frequency Oscillation Suppression for PT Controlled CCM Buck Converter

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