NDLI: Selective finite-states model predictive control of grid interfaced three-level neutral point clamped photovoltaic inverter for inherent capacitor voltage balancing

Content Provider	IET Digital Library
Author	Bonala, Anil Kumar Sandepudi, Srinivasa Rao Muddineni, Vishnu Prasad
Abstract	A selective finite states model predictive control is proposed for a grid interfaced three-level neutral point clamped solar photovoltaic inverter. The proposed control approach eliminates the weighting factor selection for dc-link capacitor voltage balancing and reduces the computational burden for real-time implementation. The switching states required for the prediction and objective function optimisation are selected based on the position of reference voltage vector in the space vector plane, inverter current directions and the charge status of the dc-link capacitors. As a result, the selection of optimal switching state is fast, easy to implement and eliminates the selection of weighting factor for capacitor voltage balancing. The feasibility of the proposed control approach is verified through simulation and laboratory-scale experimentation. The results confirm that the proposed method attains the inherent dc-link capacitor voltage balance and also retains the dynamic and steady-state current tracking in comparison with the classical finite control-set model predictive control.
Starting Page	2072
Ending Page	2080
Page Count	9
ISSN	17554535
Volume Number	11
e-ISSN	17554543
Issue Number	Issue 13, Nov (2018)
Alternate Webpage(s)	https://digital-library.theiet.org/content/journals/iet-pel/11/13
Alternate Webpage(s)	https://digital-library.theiet.org/content/journals/10.1049/iet-pel.2018.5021
Journal	IET Power Electronics
Publisher Date	2018-07-27
Access Restriction	Open
Rights Holder	© The Institution of Engineering and Technology
Subject Keyword	Classical Finite Control-set Model Predictive Control Control Approach Control of Electric Power System Dc-link Capacitor Dc-link Capacitor Voltage Balance Dc-link Capacitor Voltage Balancing Dynamic State Current Tracking Electric Current Control Finite-states Model Predictive Control Inherent Capacitor Voltage Balancing Invertors Objective Function Optimisation Optimal Control Optimal Switching State Photovoltaic Power System Power Capacitor Power Converter Power Generation Control Power Grid Power Supplies to Apparatus Prediction Predictive Control PWM Invertors Reference Voltage Vector Selective Finite State Model Predictive Control Solar Photovoltaic Inverter Space Vector Plane Steady-state Current Tracking Switching State Three-level Neutral Point Voltage Control Weighting Factor Selection
Content Type	Text
Resource Type	Article
Subject	Electrical and Electronic Engineering

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