Gradient-based fixed switching frequency direct model predictive control for grid-connected converters with LCL filters
Nahalparvari, Mehrdad; Karamanakos, Petros; Geyer, Tobias (2019-09)
Nahalparvari, Mehrdad
Karamanakos, Petros
Geyer, Tobias
IEEE
09 / 2019
2019 21st European Conference on Power Electronics and Applications (EPE '19 ECCE Europe)
Julkaisun pysyvä osoite on
https://urn.fi/URN:NBN:fi:tuni-202001151285
https://urn.fi/URN:NBN:fi:tuni-202001151285
Kuvaus
Peer reviewed
Tiivistelmä
This paper presents a direct model predictive control (MPC) scheme for a three-phase two-level grid-connected converter with an LCL filter. Despite the absence of a modulator, a fixed switching frequency and a discrete current harmonic spectrum are achieved. With a refined objective function of the optimization problem underlying MPC, grid current distortions comparable to those of carrier-based pulse width modulation (CB-PWM) in idealized conditions are produced. Moreover, the grid current harmonics meet the stringent limits imposed by grid standards. A performance evaluation is conducted to highlight the potential benefits of the proposed method.
Kokoelmat
- TUNICRIS-julkaisut [16977]