Single stage inverter for a direct AC connection of a photovoltaic cell module

Fernández, A.; Sebastián, J.; Hernando, M.M.; Arias, Manuel; Pérez, Gerardo Espinosa

doi:10.1109/pesc.2006.1711745

Cited by 37 publications

(23 citation statements)

References 1 publication

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“…Single-phase grid-connected PV inverters present similarities with the power factor correction (PFC) application and control [20], power decoupling [21] strategies as well as topologies [22] from PFC have been adapted to PV inverters.…”

Section: Single-stage Boundary Mode-controlled Forward Microinvertermentioning

confidence: 99%

Grid-Connected Forward Microinverter With Primary-Parallel Secondary-Series Transformer

Meneses

García

Alou

et al. 2015

IEEE Trans. Power Electron.

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Abstract-This paper presents a primary-parallel secondaryseries multicore forward microinverter for photovoltaic ac-module application. The presented microinverter operates with a constant off-time boundary mode control, providing MPPT capability and unity power factor. The proposed multitransformer solution allows using low-profile unitary turns ratio transformers. Therefore, the transformers are better coupled and the overall performance of the microinverter is improved. Due to the multiphase solution, the number of devices increases but the current stress and losses per device are reduced contributing to an easier thermal management. Furthermore, the decoupling capacitor is split among the phases, contributing to a low-profile solution without electrolytic capacitors suitable to be mounted in the frame of a PV module. The proposed solution is compared to the classical parallel-interleaved approach, showing better efficiency in a wide power range and improving the weighted efficiency.

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Section: Single-stage Boundary Mode-controlled Forward Microinvertermentioning

confidence: 99%

Grid-Connected Forward Microinverter With Primary-Parallel Secondary-Series Transformer

Meneses

García

Alou

et al. 2015

IEEE Trans. Power Electron.

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“…1. The topology of a flyback inverter with a center-tapped primary winding has been reported recently in [9] and [10], for large electroluminescent lamp applications. It consists of main switches S1 and S2, a high frequency primary winding center-tapped transformer, and bidirectional output switches S3 and S4.…”

Section: System Descriptionmentioning

confidence: 99%

Combined microcontroller and FPGA control of flyback inverter using a System-on-Chip device

Caglar

Caglav

Çadırcı

2014

2014 16th International Power Electronics and Motion Control Conference and Exposition

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In this paper, design and implementation of a digitally controlled flyback inverter with combined microcontroller and Field Programmable Gate Array (FPGA) logic is presented. A System-on-Chip (SoC) device is used to implement a digital controller for the flyback inverter consisting of a FPGA logic, a 32 bit microcontroller, and a programmable analog interface. Integrating all the necessary interfaces and digital resources into one single platform, reduces the controller power consumption, cost, and board size. This platform also brings the flexibility of partitioning the control task, and tracking each partition either on FPGA logic or on microcontroller software, thus enabling the utilization of both domains efficiently. The focus of this paper is on the use of a combination of FPGA and microcontroller through a SoC device, for the digital control of a flyback inverter with center-tapped primary winding. A prototype system, which is superior to previous approaches in view of more compact digital design, more accurate timing of pulse width modulation signals and shorter development time has been designed, implemented, and satisfactorily tested through laboratory experiments.

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“…This increase occurred because the concern of society with renewable energy sources and energy saving. Furthermore, it is clear that a large use of photovoltaic (PV) cells will contribute to reduce environmental problems such as greenhouse and polluting emissions to the atmosphere [1] [2].…”

Section: Introductionmentioning

confidence: 99%

“…For systems with low power levels, the flyback DCM converter has been widely used due to its isolation, simple structure, low cost and high efficiency, for use in lighting [6] [7] and for renewable energy [1][2] [8].…”

Section: Introductionmentioning

confidence: 99%

Hybrid system of distributed power generation and street lighting based on LEDs: Grid connection

Melo

Vizzotto

Kirsten

et al. 2013

2013 Brazilian Power Electronics Conference

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This work proposes an electronic driver for street lighting systems integrated to renewable energy. In recent lighting applications, the use of micro renewable generators in lighting points makes necessary the use of special electronics to handle the bidirectional energy flow in the ballast. The proposed input stage is a topology based on the integration of two flyback converters with different polarities, in order to avoid the use of the input diode bridge rectifying stage, allowing the converter operate with bidirectional energy flow. Thus, this system has two distinct operation modes. The rectifier mode is responsible to supply a street lighting system based on LEDs from de utility grid during the night, and the inverter mode must deliver energy into the power grid provided by a solar panel during the day.This work focuses in the inverter stage, which comprises a boost converter, responsible for the Maximum Power Point Tracking (MPPT), and a flyback inverter. The present topology is an alternative to standard bidirectional input stages, as it can be used to deliver energy into the power grid, due the avoidance of the input diode bridge.

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Single stage inverter for a direct AC connection of a photovoltaic cell module

Cited by 37 publications

References 1 publication

Grid-Connected Forward Microinverter With Primary-Parallel Secondary-Series Transformer

Grid-Connected Forward Microinverter With Primary-Parallel Secondary-Series Transformer

Combined microcontroller and FPGA control of flyback inverter using a System-on-Chip device

Hybrid system of distributed power generation and street lighting based on LEDs: Grid connection

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