Investigation of the performance of a photovoltaic AC module

Prapanavarat, C.; Barnes, Mike; Jenkins, Nick

doi:10.1049/ip-gtd:20020141

Cited by 22 publications

(13 citation statements)

References 3 publications

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“…e output of the second power conversion stage is fed into an unfolding circuit in order to obtain a grid-frequency sinusoidal current. 3.9c [35]. Two power switches of the CSI can be operated at a low switching frequency and the remaining two switches can be operated at a higher switching frequency in order to reduce switching losses.…”

Section: Micro Inverter With a Pseudo Dc-linkmentioning

confidence: 99%

Power Electronics for Photovoltaic Power Systems

Vilathgamuwa

Nayanasiri

Gamini

2015

Synthesis Lectures on Power Electronics

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Section: Micro Inverter With a Pseudo Dc-linkmentioning

confidence: 99%

Power Electronics for Photovoltaic Power Systems

Vilathgamuwa

Nayanasiri

Gamini

2015

Synthesis Lectures on Power Electronics

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“…The PV studied system consists of 33 series and 119 parallel modules. Photovoltaic cells vary their voltage output with irradiance, temperature, and current loading [9].…”

Section: B Photovoltaic Arraymentioning

confidence: 99%

Modeling and Control of Micro Grid Powered by Maximum Power PV Array and Fixed Speed Wind Energy Conversion System

Mahfouz¹,

El-Sayed²

2013

REPQJ

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Abstract. In this paper, the dynamic modeling of the studied micro grid (MG) is presented for steady state and transient operation conditions. Moreover, control strategies to obtain the maximum converted power and stabilize the voltage under different operating conditions are derived. The integrated system under study has four key subsystems to supply the required electric loads. The first and second subsystems include the layout of the studied MG and the renewable generation sources from Wind turbine and PV array. The third represents the boost converter between the PV and the DC collection bus as well as the interfaced inverter to the point of common coupling (PCC) with the MG. The fourth subsystem comprises mainly the required PI controllers to regulate the modulation index of the inverter and the duty cycle of the boost converter for PV maximum in addition of regulating the boost inverter DC link voltage. The proportional and integral parameters of these controllers are tuned off-line to enhance the grid performance. The integrated system and the associated subsystems are fully validated for efficient operation under normal or fault conditions using the Matlab/Simulink/SimPower software. Key wordsMicro Grid, Photovoltaic (PV) array, Wind energy conversion, DC/DC boost converter, Inverter (VSI) IntroductionDistributed generation (DG) is becoming an important research area to facilitate the utilization of green energy resources. Compared with conventional power plants, distributed generation has less pollution and high reliability. Moreover, installation of DG energy resources can potentially postpone the demand for distribution and transmission expansion planning to cover the increasing electric demand of the consumers [1]. Interconnection of different DG units to distribution network forms a new system called MG. MGs with DG close to load centers will reduce the required power flows from transmission and distribution networks resulting in loss reduction and reliability increase. Micro grids will reduce also the harmful gas emission and mitigate climate changes. This is attributed to the fact that the installed DG units are based on renewable sources that are free emissions [2]. Distributed generations used in micro grids are technically not suitable for direct energy supply to the grid. They have to be interfaced with Micro Grid through power conditioning devices and appropriate control strategies in order to provide the required voltage and frequency at PCC [3]. Wind turbine will generally operate in normal conditions with voltage level between 90 and 105% and frequency between 49-51 Hz. The penetration of distributed generation may violate these operation constraints. Therefore, the active and reactive power supplied to the distribution network should be continuously controlled to regulate the voltage and frequency of the system. Under fault conditions, the wind turbine would experience large voltage variations. The amplitude and duration of these variations will determine whether the wind turbine should b...

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“…MIC converters may have a capacitor DC link or can employ a pseudo DC link with reduced capacitance or without capacitor. Figure 2 shows a two-stage converter using an H-bridge inverter in the output [7,8]. Many converter topologies may be employed, and many kinds of MIC inverters can be found in the literature using half-bridge, full-bridge, push-pull, buck-boost, flyback, Cuk and other structures.…”

Section: Introductionmentioning

confidence: 99%

“…The main advantages of this controller are the simplicity for implementation in single-phase systems and zero steady state error with sinusoidal current. Topology using a high-frequency transformer on the DC-DC stage and an H-bridge inverter at the output [7,8]. The HFT is employed on the DC side, which is composed of the half-bridge DC-DC and the rectifiers.…”

Section: Introductionmentioning

confidence: 99%

Micro-inverter for integrated grid-tie photovoltaic module using resonant controller

Gazoli

Villalva

Ruppert

2013

Int. Trans. Electr. Energ. Syst.

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SUMMARY Two‐stage isolated converters for photovoltaic (PV) applications commonly employ a high‐frequency transformer (HFT) on the DC–DC side, submitting the DC–AC inverter switches to high voltages and forcing the use of insulated‐gate bipolar transistors instead of low‐voltage and low‐loss metal‐oxide‐semiconductor field‐effect transistors. This paper shows the modeling, control and simulation of a single‐phase full‐bridge inverter with HFT that can be used as part of a two‐stage converter with transformerless DC–DC side or as a single‐stage converter (simple DC–AC inverter) for grid‐connected PV applications. The inverter is modeled to obtain a small‐signal transfer function used to design the P + Resonant current control regulator, whose main advantages are the simplicity for implementation in single‐phase systems and zero steady state error with sinusoidal current. A high‐frequency step‐up transformer results in low‐voltage switches and better efficiency compared with converters in which the transformer is used on the DC–DC side. Simulations and experimental results with a 200‐W prototype are shown. Copyright © 2013 John Wiley & Sons, Ltd.

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Investigation of the performance of a photovoltaic AC module

Cited by 22 publications

References 3 publications

Power Electronics for Photovoltaic Power Systems

Power Electronics for Photovoltaic Power Systems

Modeling and Control of Micro Grid Powered by Maximum Power PV Array and Fixed Speed Wind Energy Conversion System

Micro-inverter for integrated grid-tie photovoltaic module using resonant controller

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