Paper Info
Title
Disturbance Rejection Enhancement For Three-Phase Converters By Active Inductance
Abstract
The current control has an important impact on the performance of three-phase voltage source converters. A common approach is to adopt a two-degree-of-freedom scheme by which the reference-tracking and disturbance-rejection response are independently adjusted. On the one hand, a conventional current controller, such as a proportional-integral or resonant controller, is tuned to optimize the reference-tracking dynamics. On the other hand, an active resistance is selected to improve the disturbance rejection without altering the reference tracking. There are methods to further enhance the disturbance rejection by, e.g., adding extra selective controllers, but this increases complexity and requires the knowledge of the frequencies to be compensated. Therefore, it is still desirable to ameliorate the disturbance rejection to a greater extent, in a simple manner and without a priori information about the disturbance frequencies. This paper proposes to improve the disturbance rejection by means of an active inductance, without affecting the optimum reference tracking. Concerning the transient response, the overshoot (and hence, the integrated error) is significantly reduced. Furthermore, the steady-state attenuation of harmonics becomes larger in the lower part of the spectrum, where the harmonic disturbances usually arise. Simulation results supporting the functionality of the proposal are provided.
Year
DOI
Venue
2018
10.1109/IECON.2018.8591992
IECON 2018 - 44TH ANNUAL CONFERENCE OF THE IEEE INDUSTRIAL ELECTRONICS SOCIETY
Keywords
Field
DocType
Active resistance, current control, pulsewidth modulation converters, variable speed drives
Transient response,Control theory,Inductance,Control theory,Voltage source,Overshoot (signal),Harmonic,Converters,Three-phase,Engineering
Conference
ISSN
Citations 
PageRank 
1553-572X
0
0.34
References 
Authors
0
3
Name
Order
Citations
PageRank
Alejandro G. Yepes1678.88
Jesus Doval-Gandoy212718.84
Hamid A. Toliyat312626.32