A single-phase photovoltaic Microinverter topology based on boost converter

Abstract

This paper presents a novel grid-connected photovoltaic Microinverter topology and its control implementation. A very significant contribution is to propose an innovative conversion structure with the aim of achieving high efficiency, easy control, high reliability and low design cost. In a first part of this contribution, we describe the proposed configuration topology. In a second part, we present the simulation tests developed in order to verify the validity and performance of its operating principle. The last part is reserved for discussion of the simulation results.Streszczenie. W artykule opisano topologię mikroprzekształtnika współpracującego z ogniwem fotowoltaicznym. Zaproponowano nową koncepcję konwersji dla osiągnięcia prostego sterowania I małego kosztu. W pierwszej części opisano układ, w drugiej części przedstawiono wyniki symulacji a w trzeciej dyskusję wyników. Jednofazowy mikroprzekształtnik współpracujący z ogniwem fotowoltaicznym

Photovoltaic Microinverter Based on Buck-Boost Converter and Discharge Circuit

“…To achieve better performance with fewer components, researchers have explored the use of multi-stage microinverters. The first stage of these microinverters is a DC-DC converter, which preconditions the voltage and current waveforms provided by the photovoltaic source, the primary types of converters used are boost converters as they provide an amplified output voltage [3][4][5][6][7]. Depending on the requirements, other converters such as buck or flyback converters are employed [8][9][10].…”

Comparative Study of a Photovoltaic System Connected to a Three-Phase Grid by Using PI or Fuzzy Logic Controllers

“…In work [21], an extended direct control of the power (DPC) for a three-phase inverter with pulse width modulation (PWM) on several levels supplied from a photovoltaic system (PV), and connected to a three-phase grid, was presented. The connection of the photovoltaic panels through a single-phase inverter to an AC grid was presented in work [22]. In work [23], a photovoltaic system connected through a single-phase inverter to an AC grid, controlled through a fuzzy logic controller, was presented.…”