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[IEEE 2019 Innovations in Power and Advanced Computing Technologies (i-PACT) - Vellore, India (2019.3.22-2019.3.23)] 2019 Innovations in Power and Advanced Computing Technologies (i-PACT) - Single-Stage Multifunction Multilevel Converter for Grid Interactive Photovoltaic System using Cascaded Two-level Inverter
摘要： This paper presents a single-stage multilevel converter for grid interactive Photovoltaic (PV) system using a Cascaded Two-Level Inverter (CTLI). The converter uses less number of switches, less isolated DC sources and no extra components like capacitors and diodes which are used in conventional multilevel inverters (MLIs). The CTLI based grid tied Photovoltaic system tracks the maximum power produced by the PV array under varying insolation conditions and injects the active power into the grid. Additionally, the PV system is able to perform the reactive power compensation along with harmonics elimination for nonlinear load within the capacity of inverter. These multi-functionality increases overall utilization of the system. The control scheme of the CTLI based grid interactive PV system is developed using instantaneous power (p-q) theory. The control of CTLI based multifunctional grid interactive PV system is verified through MATLAB/Simulink simulations. The simulation results validate the performance of CTLI based grid tied PV system for MPPT as well as active and reactive power control for changing insolation and load conditions.
关键词： Cascaded Two-Level Inverter (CTLI),Maximum Power Point Tracking (MPPT),Photovoltaic (PV),Multilevel Inverter (MLI)
更新于2025-09-19 17:13:59
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Implementation of a modified SVPWM-based three-phase inverter with reduced switches using a single DC source for a grid-connected PV system
摘要： Application of multilevel inverters has been an active research area in recent years due to their growing importance in various diversified electrical utilities. A three-phase inverter with a single DC source employing a three-phase transformer for a grid-connected photovoltaic (PV) system controlled using the modified space vector pulse width modulation technique (MSVPWM) for fifteen switches is presented in this paper. An MSVPWM technique is implemented through a field-programmable gate array (FPGA) and generates high quality gate pulses to the switches in the inverter. The main advantages of the proposed inverter topology are reduced number of power switches, transformers and minimum total harmonic distortion (THD). The perturb and observe maximum power point algorithm is used to obtain the maximum power from the PV panel at all climatic conditions. The performance of the proposed system is validated through MATLAB/Simulink as well as an FPGA-based prototype model.
关键词： MSVPWM,Multilevel inverter (MLI),FPGA,PV,single DC source
更新于2025-09-04 15:30:14