A sensorless control technique for low cost AC/DC converters

Author

Capecce, S.L. ; Cecati, C. ; Rotondale, N.

Author_Institution

Dept. of Electr. Eng., L´´Aquila Univ., Italy

Volume

3

fYear

2003

fDate

12-16 Oct. 2003

Firstpage

1546

Abstract

This paper proposes a sensorless technique capable to reconstruct the input currents of a three-phase active rectifier using only a DC-link voltage sensor and a PLL circuit in the line side. It has been developed in order to design a low cost three-phase active rectifier and it is based on the novel PMM (power matching modulation) technique and on the control of the capacitor energy. The proposed system guarantees close-to-unity power factor, excellent output voltage regulation, limited current harmonic content, high efficiency and low cost.

Keywords

AC-DC power convertors; PWM power convertors; phase locked loops; power control; power factor; rectifying circuits; voltage control; DC-link voltage sensor; PLL circuit; PWM; capacitor energy control; close-to-unity power factor; current harmonic content; high efficiency; input currents reconstruction; low cost; low cost AC/DC converters; output voltage regulation; power matching modulation; sensorless control technique; three-phase active rectifier; Capacitors; Circuits; Costs; DC-DC power converters; Phase locked loops; Power system harmonics; Reactive power; Rectifiers; Sensorless control; Voltage control;

fLanguage

English

Publisher

ieee

Conference_Titel

Industry Applications Conference, 2003. 38th IAS Annual Meeting. Conference Record of the

Print_ISBN

0-7803-7883-0

Type

conf

DOI

10.1109/IAS.2003.1257761

Filename

1257761