Adaptive Feedback Linearization based Control of a Three-Phase Grid Connected Inverter under Non-Ideal Grid Voltage Condition
Grid-connected inverters are conventionally controlled in synchronously rotating frame of reference with the controllers being designed for steady state operation via small signal modeling neglecting higher order and coupling terms. However, for an inverter connected to the grid via RL filter, cross coupling terms are present due to transformation to synchronously rotating dq reference frame, thereby affecting the dynamic performance. In this paper adaptive estimation based feedback linearization control is proposed for online parameter update to exactly cancel the non-linearity and higher order terms which reduces the system into bunch of pure integrators. The details of adaptive parameter estimation and the feedback linearization have been presented in this paper. Overall control architecture proposed in this paper is been verified via simulation studies based on MATLAB/Simulink and Plecs domain. A reduced scale laboratory prototype has been utilized to implement the proposed control architecture and verify its efficacy.
V. R. Chowdhury and J. W. Kimball, "Adaptive Feedback Linearization based Control of a Three-Phase Grid Connected Inverter under Non-Ideal Grid Voltage Condition," Proceedings of the 2019 IEEE Power and Energy Conference at Illinois (2019, Champaign, IL), Institute of Electrical and Electronics Engineers (IEEE), Feb 2019.
The definitive version is available at https://doi.org/10.1109/PECI.2019.8698926
2019 IEEE Power and Energy Conference at Illinois, PECI 2019 (2019: Feb. 28-Mar. 1, Champaign, IL)
Electrical and Computer Engineering
Intelligent Systems Center
Keywords and Phrases
Adaptive control systems; Electric inverters; MATLAB; Parameter estimation; Passive filters; Adaptive estimation; Adaptive feedback linearization; Adaptive parameter estimation; Feedback linearization control; Model reference adaptive system (MRAS); RL-filters; Three-phase grid connected inverters; Voltage source inverter (VSI); Feedback linearization; Feedback-linearization (FL); RL filter
International Standard Book Number (ISBN)
Article - Conference proceedings
© 2019 Institute of Electrical and Electronics Engineers (IEEE), All rights reserved.
01 Feb 2019