Model Predictive Control Scheme of a Four-Level Quasi-Nested Converter Fed AC-Drive, with dc-Link Voltage-Drift Compensation

Carlos A. Reusser, Ramón Herrera

Research output: Contribution to journalArticlepeer-review

Abstract

In this paper, a Model Predictive Control (MPC) strategy is introduced for its application in a four-level quasi-nested topology, feeding an Interior Permanent Magnet Synchronous Machine (IPMSM) AC-drive. The proposed control strategy is capable to synthesize the required output space vectors to ensure perfect tracking of the AC-drive speed reference under different loading conditions, while also ensuring voltage balance between the dc-link capacitors. The proposed converter topology is based on a reduced number of components compared to other mature converter topologies, such as the neutral-point clamped converter (NPC) or the active neutral-point clamped converter (ANPC) topologies, when compared in terms of the number of output voltage levels, since this quasi-nested topology does not require passive clamping devices such as diodes or active switches. Moreover, no floating dc-link capacitors with asymmetrical voltage levels are employed, thus simplifying the dc-link capacitor voltage balance mechanism. This work presents the switching operation principles and MPC control law when supplying an IPMSM AC-drive load are addressed in detail. Simulation and validation results using a Hardware in the Loop (HIL) prototype under different operation conditions are presented in order to validate the proposed converter topology and control strategy.

Original languageEnglish
Article number333
JournalElectronics (Switzerland)
Volume11
Issue number3
DOIs
StatePublished - 1 Feb 2022
Externally publishedYes

Keywords

  • AC drive
  • Dc-link balance mechanism
  • Model predictive control
  • Multilevel converter
  • Permanent magnet synchronous machine
  • Quasi-nested converter
  • Reduced switching devices topology

Fingerprint

Dive into the research topics of 'Model Predictive Control Scheme of a Four-Level Quasi-Nested Converter Fed AC-Drive, with dc-Link Voltage-Drift Compensation'. Together they form a unique fingerprint.

Cite this