NDLI: Direct grid-side current model predictive control for grid-connected inverter with LCL filter

Content Provider	IET Digital Library
Author	Zhang, Xiao Tan, Li Xian, Jiaheng Zhang, Hui Ma, Zhixun Kang, Jinsong
Abstract	On control of the grid-connected inverter (GCI) with LCL filter, the inverter-side current model predictive control is adopted conventionally. The ultimate grid-side current is controlled indirectly by control of inverter-side current. The ideal scenario is that grid-side current is directly controlled. However, the conventional control model is complicated and the calculation is heavy. This study proposed a novel direct grid-side current model predictive control (GSC-MPC) for GCI with LCL filter. Based on timing coordination of both forward and backward difference methods, a direct connection is established between the grid-side output current and the inverter-side output voltage. Meanwhile, a proper mathematical model is built for an improved model predictive control. The exact required voltage vector in the next sampling interval is predicted and calculated by this model. The output optimal voltage vector is modulated by space vector pulse width modulation technique to control the inverter. Furthermore, the proposed GSC-MPC is rather robust to parameter variation. Simulation and experimental results present that the proposed GSC-MPC can improve the current control performance effectively for GCI with LCL filter.
Starting Page	2450
Ending Page	2460
Page Count	11
ISSN	17554535
Volume Number	11
e-ISSN	17554543
Issue Number	Issue 15, Dec (2018)
Alternate Webpage(s)	https://digital-library.theiet.org/content/journals/iet-pel/11/15
Alternate Webpage(s)	https://digital-library.theiet.org/content/journals/10.1049/iet-pel.2018.5338
Journal	IET Power Electronics
Publisher Date	2018-09-25
Access Restriction	Open
Rights Holder	© The Institution of Engineering and Technology
Subject Keyword	Control of Electric Power System Conventional Control Model Current Control Performance Electric Current Control Grid-connected Inverter Grid-side Output Current Improved Model Predictive Control Inverter-side Current Model Predictive Control Inverter-side Output Voltage Invertors LCL Filter Novel Direct Grid-side Current Model Predictive Control Optimal Control Power Converter Power Grid Power Supplies to Apparatus Predictive Control PWM Invertors Ultimate Grid-side Current
Content Type	Text
Resource Type	Article
Subject	Electrical and Electronic Engineering

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