Control of unbalanced voltage PWM converter using instantaneous ripple power feedback

Author

Kang, Jun-Koo ; Sul, Seung-Ki

Author_Institution

Sch.of Electr. Eng., Seoul Nat. Univ., South Korea

Volume

1

fYear

1997

fDate

22-27 Jun 1997

Firstpage

503

Abstract

The voltage unbalance can impair a PWM converter system because the input active and reactive power ripples are generated by the cross products of line currents and unbalanced voltages. In this paper, effects of voltage unbalance in a three phase PWM converter are analyzed and a new control scheme to suppress input power ripple and DC link voltage ripple caused by unbalances is presented. The proposed method is based on the instantaneous power theory to compute compensation currents which cancel the power ripple. The simulation and experimental results are presented to verify the feasibility and effectiveness of the proposed method

Keywords

PWM power convertors; compensation; feedback; reactive power control; voltage control; DC link voltage ripple suppression; compensation currents; input active power ripples; input power ripple suppression; input reactive power ripples; instantaneous power theory; instantaneous ripple power feedback; three phase PWM converter; unbalanced voltage PWM converter control; voltage unbalance; Computational modeling; Feedback; Frequency; Power generation; Power harmonic filters; Power system harmonics; Power system simulation; Pulse width modulation; Pulse width modulation converters; Voltage control;

fLanguage

English

Publisher

ieee

Conference_Titel

Power Electronics Specialists Conference, 1997. PESC '97 Record., 28th Annual IEEE

Conference_Location

St. Louis, MO

ISSN

0275-9306

Print_ISBN

0-7803-3840-5

Type

conf

DOI

10.1109/PESC.1997.616770

Filename

616770