NDLI: Model predictive control strategy for NPC grid-connected inverters in unbalanced grids

Content Provider	IET Digital Library
Author	Jin, Tao Wei, Haibin Nzongo, Daniel Legrand Mon Zhang, Yizhen
Abstract	A model predictive control (MPC) strategy for a three-phase three-level neutral point clamped (NPC) grid-connected inverter is discussed. Conventional two-level inverters are effective when a symmetric fault occurs. But when a three-phase unbalanced fault occurs, they will generate errors and introduce delay in the power system because of the complex design or the neglected negative-sequence component of the grid. To solve this problem, a new method to control a NPC grid-connected inverter is proposed, which combines an MPC strategy with a decoupling double synchronous reference frame phase-locked loop technique. The proposed method reduces the use of PI controllers and enhances the system's response speed. Using simulations and experiments, the proposed MPC strategy for a three-level NPC grid-connected inverter is proven to be accurate and reliable.
Starting Page	1248
Ending Page	1250
Page Count	3
ISSN	00135194
Volume Number	52
e-ISSN	1350911X
Issue Number	Issue 14, Jul (2016)
Alternate Webpage(s)	https://digital-library.theiet.org/content/journals/el/52/14
Alternate Webpage(s)	https://digital-library.theiet.org/content/journals/10.1049/el.2016.1285
Journal	Electronics Letters
Publisher Date	2016-06-09
Access Restriction	Open
Rights Holder	© The Institution of Engineering and Technology
Subject Keyword	Control of Electric Power System Decoupling Double Synchronous Reference Frame Phase-locked Loop Technique Invertors Model Predictive Control Strategy MPC Strategy NPC Grid-connected Inverter Optimal Control Phase Locked Loop PI Control PI Controller Predictive Control Three-phase Three-level Neutral Point Clamped Inverter Three-phase Unbalanced Fault Unbalanced Grid
Content Type	Text
Resource Type	Article
Subject	Electrical and Electronic Engineering

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