Improved dynamic response of bridgeless ac/dc power factor correction converter using digital pulse train control strategy

Mehmet Fatih Özlük; Mustafa Gökdağ; Ozan Gülbudak

Improved dynamic response of bridgeless ac/dc power factor correction converter using digital pulse train control strategy

Mehmet Fatih Özlük

Mustafa Gökdağ

Ozan Gülbudak

Vol. 25, No. 10, pp. 1785-1799, Oct. 2025

10.1007/s43236-025-01019-z

Power factor correction

Bridgeless converter

Average current control

Pulse train control

Abstract

This paper investigates the pulse train control strategy for a bridgeless power factor corrector (PFC) system to improve the power quality. The bridgeless AC/DC PFC converter is considered to explore the possible benefits of the pulse-train control method, and performance analyses are conducted in terms of dynamic response, total harmonic distortions, and the ability to achieve a unity power factor. The working principle of the bridgeless power factor corrector converter is explained, and a design guideline for the power stage is provided. The digital average current mode control method is considered to be a traditional closed-loop approach, and the proposed method is compared with the digital average current mode control method in terms of fair evaluation metrics. The mathematical framework of the proposed method is validated by considering realistic closed-loop scenarios using simulation tools. According to the resulting simulation results, the input current complies with IEC61000-3-2 standards when the proposed control method is applied. A bridgeless AC/DC PFC prototype is built to perform experimental tests. Based on experimental work, it can be seen that the proposed method offers robust PFC operation under varying loads and other transient conditions. The power quality is improved by the elimination of reactive components. Comparison work between the proposed method and the digital average current mode control approach is carried out experimentally to demonstrate the key capabilities of the proposed pulse train control method. Experimental results demonstrate that the proposed feedback strategy offers robust control of the state variables and reliable PFC operation.

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Cite this article

[IEEE Style]

M. F. Özlük, M. Gökdağ, O. Gülbudak, "Improved dynamic response of bridgeless ac/dc power factor correction converter using digital pulse train control strategy," Journal of Power Electronics, vol. 25, no. 10, pp. 1785-1799, 2025. DOI: 10.1007/s43236-025-01019-z.

[ACM Style]

Mehmet Fatih Özlük, Mustafa Gökdağ, and Ozan Gülbudak. 2025. Improved dynamic response of bridgeless ac/dc power factor correction converter using digital pulse train control strategy. Journal of Power Electronics, 25, 10, (2025), 1785-1799. DOI: 10.1007/s43236-025-01019-z.