Multi-Stage Structure with Model Predictive Control for Nine-Level Inverter Grid-Connected
Publish place: Sixth National Congress on Electrical Engineering and Computer Engineering of Iran with a New Approach to New Energy
Publish Year: 1398
نوع سند: مقاله کنفرانسی
زبان: English
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شناسه ملی سند علمی:
COMCONF06_188
تاریخ نمایه سازی: 24 شهریور 1398
Abstract:
In this paper, an improved power conversion structure for integrating photovoltaic systems into the power grid is presented. In order to obtain a galvanic insulation between the grid and the PV panel, many PV systems use a power transformer, avoiding that a leakage current may flow through the capacitance between PV panel and ground. Some systems use a transformer embedded in a high-freq ency DC/DC converter. This structure is based on a multilevel inverter and on an isolated DC-DC converter. The structural design of this power converter allows a nine-level shaped output voltage wave at the output of the multilevel inverter. To control the proposed structure, model predictive control(MPC) technique is used. PSCAD/EMTDC software is used for simulation of the converter
Keywords:
Photovoltaic power conversion , isolated DC-DC converter , grid connection , multilevel inverter , model predictive control (MPC)
Authors
Meysam Salehi
Faculty of Electrical and Computer Engineering University of Urmia, Urmia, Iran