Current programmed control of a single-phase two-switch buck-boost power factor correction circuit
Andersen, G.K.
Blaabjerg, F.
Vestas Wind Systems, Randers, Denmark;
This paper appears in: Industrial Electronics, IEEE Transactions on
Publication Date: Feb. 2006
Volume: 53,
Issue: 1
On page(s): 263- 271
ISSN: 0278-0046
INSPEC Accession Number: 8765384
Digital Object Identifier: 10.1109/TIE.2005.862252
Current Version Published: 2006-02-06
Abstract
This paper presents a new current programmed control (CPC) technique for a cascaded two-switch buck-boost converter suitable as a low-cost power factor correction (PFC) rectifier in a variable speed motor drive. This new CPC technique, which is an extension of the conventional CPC method, enables the variable output dc voltage, and is therefore suitable in a pulse amplitude modulated (PAM) motor drive or as a universal input-power supply. The CPC method is very simple and requires only a constant-current reference without any changes in the transition between boost and buck operating mode, and the line current is practically unaffected by the topology-mode shift. Simulations and experimental results verify the presented control technique. Compliance with IEC-61000-3-2 class A is achieved. The experimental setup is based on a commercial CPC integrated circuit (IC) for dc-dc converters. This new control technique enables a simple low-cost control circuit for the two-switch buck-boost converter, which complies with IEC-61000-3-2, and the PFC circuit has inherent in-rush and overcurrent protection.
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