Field programmable gate array-based new fusion control for photovoltaic inverter

This paper proposes a new fusion of digital controls for Photovoltaic (PV) fed DC-DC-AC inverter. The proposed PV-DC-DC-AC design includes the control for voltage regulation of the closed-loop buck converter by combining two duty cycles of Digital Proportional Integral-Digital Pulse Width Modulation...

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Bibliographic Details
Published in:Computers & electrical engineering 2022-03, Vol.98, p.107738, Article 107738
Main Authors: Prathap, Joseph Anthony, Anandhi, T.S.
Format: Article
Language:English
Subjects:
Buck converter
Buck converters
Field programmable gate array
Field programmable gate arrays
Inverters
Maximum power point tracking
Maximum power tracking
Multi-level inverter
Photo voltaic module
Photovoltaic cells
Proportional integral
Proportional integral controller
Pulse duration modulation
Pulse width modulation
Switching
Switching angle algorithm
Voltage converters (DC to DC)
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Summary:This paper proposes a new fusion of digital controls for Photovoltaic (PV) fed DC-DC-AC inverter. The proposed PV-DC-DC-AC design includes the control for voltage regulation of the closed-loop buck converter by combining two duty cycles of Digital Proportional Integral-Digital Pulse Width Modulation (DPI-DPWM) and Maximum Power Point Tracking (MPPT) for one of the DC supply (9V) of the 81-level Trinary Cascaded Hybrid Multi-Level Inverter (TCHMLI). The control for the DC-DC converter is provided by the DPWM techniques, and the TCHMLI requires 16 switching patterns that are to be controlled by the Half Height-Switching Angle Method (HH-SAM). The real-time implementation for the proposed fusion control is verified with a resolution of 28 and 210 bits and validated using Field Programmable Gate Array (FPGA). The hardware result of the proposed photovoltaic inverter is compared with the existing methods and proves to be feasible.
ISSN:0045-7906
1879-0755
DOI:10.1016/j.compeleceng.2022.107738