An Indirect Model Predictive Control Method for Grid-Connected Three-Level Neutral Point Clamped Converters with LCL Filters
Rossi, Mattia; Karamanakos, Petros; Castelli-Dezza, Francesco (2022)
Rossi, Mattia
Karamanakos, Petros
Castelli-Dezza, Francesco
2022
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Julkaisun pysyvä osoite on
https://urn.fi/URN:NBN:fi:tuni-202210318019
https://urn.fi/URN:NBN:fi:tuni-202210318019
Kuvaus
Peer reviewed
Tiivistelmä
This article presents a model predictive control (MPC) algorithm for a three-level neutral point clamped converter connected to the grid via an LCL filter. The proposed long-horizon MPC method, formulated as a multicriterion quadratic program (QP), simultaneously controls the grid and converter current as well as the filter capacitor voltage, while meeting the relevant grid standards. To achieve the latter, a carrier-based pulsewidth modulation stage is employed. Finally, soft constraints are included to ensure operation of the system within its safe operating limits, particularly with regards to a potential overcurrent or overvoltage trip during transient operation. The presented simulation results based on a medium-voltage system as well as experimental studies based on a scaled-down prototype verify the effectiveness of the proposed method.
Kokoelmat
- TUNICRIS-julkaisut [16929]