Analysis of Grid-Connected VSCs Subject to Voltage Harmonic Disturbances: Prediction and Design Tool of Resonant Controllers

• Published in: IEEE transactions on energy conversion Vol. 38; no. 1; pp. 239 - 249
• Main Authors: Alves, Andre Guilherme Peixoto, Rolim, Luis Guilherme Barbosa, Dias, Robson Francisco da Silva, Ramos, Janito dos Santos
• Format: Journal Article
• Language: English
• Published: New York IEEE 01.03.2023; The Institute of Electrical and Electronics Engineers, Inc. (IEEE)
• Subjects: Controllers; Electric potential; Grid-connected voltage source converter; Harmonic analysis; Harmonics; LCL filter; Power conversion; Power harmonic filters; Power quality; Power system stability; prediction; resonant controllers; Stability criteria; Voltage; Voltage control; voltage harmonic disturbances
• ISSN: 0885-8969; 1558-0059
• DOI: 10.1109/TEC.2022.3196244

The influence of current and voltage harmonics in the power quality of electrical facilities is currently an important topic in discussion. Considering that in Voltage Source Converter (VSC) applications it is common to utilize resonant controllers to mitigate characteristic current harmonics, this work proposes a methodology to allow the tuning of resonant controllers through a power quality criterion during the design process, enabling the designer to select between harmonic content and stability. The disturbance rejection model that relates the output harmonic currents with the grid voltage harmonics is utilized as basis for the methodology, also providing an analytical calculation of the resonant controller gain according to the imposed harmonic limitations, both for VSCs with regular L as with LCL output filters. Simulations and experiments validate the proposal.