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Small-signal averaged model and carrier-based linear control of a new Sheppard-Taylor-based PFC

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3 Author(s)
Kanaan, H.Y. ; Dept. of Electr. & Mech. Eng., St.-Joseph Univ., Mkalles ; Hayek, A. ; Al-Haddad, K.

In this paper, the small-signal averaged model of a new Sheppard-Taylor-based DC-DC converter, used in single-phase power factor correction (PFC) applications, is derived. Compared to the conventional Sheppard-Taylor converter, this topology allows lower voltage stresses across the capacitors and larger output voltage range for the same operating area. Based on the proposed model, a carrier-based Pulse-Width-Modulation (PWM) linear control system is developed in order to ensure a unity power factor at the rectifier AC-side and a regulated voltage at the rectifier DC-side. Both current and voltage regulators are PI-type. The performance of the proposed control scheme is tested through simulations. The system performance is evaluated in terms of source current total harmonic distortion (THD), input power factor and DC-voltage regulation.

Published in:

Industrial Electronics, 2008. IECON 2008. 34th Annual Conference of IEEE

Date of Conference:

10-13 Nov. 2008