Discrete-time stability analysis of grid-connected converters considering the PLL dynamics

The objective of this paper is to develop a discrete-time stability analysis of a three-phase grid-connected converter, considering not only the current and the DC-link voltage/power controllers, but also including the phase-locked loop (PLL) dynamics. This analysis is carried out in the synchronous...

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Bibliographic Details
Published in2018 IEEE 19th Workshop on Control and Modeling for Power Electronics (COMPEL) pp. 1 - 8
Main Authors Massing, J. R., Pereira, A. T., Nicolini, A. M., Carnielutti, F. M., Vieira, R. P., Pinheiro, H.
Format Conference Proceeding
LanguageEnglish
Published IEEE 01.06.2018
Subjects
Mathematical model
Phase locked loops
Power system stability
Reactive power
Stability analysis
Synchronization
Voltage control
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Summary:The objective of this paper is to develop a discrete-time stability analysis of a three-phase grid-connected converter, considering not only the current and the DC-link voltage/power controllers, but also including the phase-locked loop (PLL) dynamics. This analysis is carried out in the synchronous dq reference frame. Some aspects of the closed-loop stability that involve nonlinear dynamics analysis and equilibrium points are presented in order to get a small-signal linearized model.
DOI:10.1109/COMPEL.2018.8460159