Low cost single stage micro-inverter with MPPT for grid connected applications

Petreuş, Dorin; Dărăban, Stefan; Ciocan, I.; Pătărău, Toma; Morel, Cristina; Machmoum, Mohamed

doi:10.1016/j.solener.2013.03.016

Cited by 37 publications

(16 citation statements)

References 24 publications

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“…A study about the economic viewpoint has been carry out in [8]. A low cost single stage micro-inverter with MPPT for grid connected applications has been studied in [9]. The literature survey also notes that most micro-inverters are designed in the power range of 100-250 W with power conversion efficiencies above 90% [10].…”

Section: Introductionmentioning

confidence: 99%

Performance Comparison between Micro-inverter and String-inverter Photovoltaic Systems

et al. 2015

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This paper focuses on the analysis of the energy production of building integrated photovoltaic systems. All the PV systems are located in the south part of Italy -Sicily. A comparison has been made between two different conversion technologies: stringinverter versus micro-inverter. The two string-inverter systems analyzed have different azimuth angle, no shadowing, different peak power and different types of photovoltaic modules ( monocrystalline and polycrystalline silicon). The four micro-inverter systems have different shadowing percentage, different azimuth. All systems have fixed tilt angle and fixed azimuth angle. The experimental data were treated for almost one year. In order to analyze the performance of the systems, the most common Indexes (the Energy Yield Yf, the Reference Yield YR, the Performance Ratio PR and Efficiency ) have been used. This allowed to obtain a correct comparison even with different Irradiance values and different Peak Powers. The main goal of the analysis has been to evaluate the performances of the micro-inverter systems at different shadowing conditions. The results of the comparison have confirmed that micro-inverter systems present better performances both at shadowed and "not-shadowed" conditions. By comparing not-shadowed systems with the two different conversion technologies and similar azimuth and tilt angle it has been shown how, with almost the same values of Irradiance, micro-inverter systems maximize the energy production. Furthermore, the highest percentage of produced energy could justify the more expensive cost of this new conversion technology.

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Section: Introductionmentioning

confidence: 99%

Performance Comparison between Micro-inverter and String-inverter Photovoltaic Systems

et al. 2015

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“…As a singlestage three-level inverter, the inverter control unit greatly comprises of MPPT control, voltage control and current control, phase locked loop (PLL) synchronization, and pulse width modulation (PWM) generator. According to extensive study in [29], the P&O based MPPT implemented in single-stage microinverter guarantees 0.98 power factor of the system, 4.7% total current distortion (THD), and 93% efficiency of the inverter. for the dc-link voltage scheme.…”

Section: System Descriptionmentioning

confidence: 99%

The capability Enhancement of DC-link Voltage Using ARPI Controller for Single-Stage Grid-Connected PV System

Alhejji¹

2019

Preprint

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The article introduces a new solution approach to grid-connected single-stage three-phase PV inverter whereby a dc-link voltage can successfully achieve the desired performance. As a single-stage, the variable output of perturb and observe maximum power point tracking (P&O based-MPPT) is fully utilized as dc-link voltage reference in inverter control scheme. As a result, it is challenging for the dc-link voltage to preserve energy balance by tracking its variable dc-link voltage reference under unpredictable environmental changes. To overcome this challenge, an adaptive reference proportional-integral (ARPI) controller, self-tuning, is designed and implemented to compel the dc-link voltage tracking its voltage reference to be equal as closely as possible; hence, the capability of the dc-link under abnormal events substantially guarantees the best energy balance and transient performance enhancement. To verify the validity of the method, simulation results for multiple events scenarios on 250 KW single-stage grid-connected PV systems show the effectiveness of the ARPI controller compared with PI controller.

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“…So, due to this low voltage generation associated to generally high input current requirement, a high step-up DC-DC converter with high efficiency is needed to convert the low DC input to the required voltage, current, and frequency. This is particularly true in the case where a microinverter [4]- [9] is provided to each PV module of solar PV systems. Such a microinverter has generally two stages; the first stage uses the high step-up DC-DC converter to meet the voltage demand of the second stage and also act as a maximum power point tracker in order to get maximum power from the PV module.…”

Section: Introductionmentioning

confidence: 99%

Performance Analysis of a Boost Converter with Components Losses

Honadia¹,

Barro²,

Sane³

2018

EPE

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A theoretical study of a conventional boost converter is presented. Based on the real behavior of the components, two models of the boost converter are introduced: one dealing only with losses through inductor and capacitor and another taking into account switching losses in addition to resistive ones. From these two models, the detailed analytical expressions of both voltage gain factor and conversion efficiency are established taking into account the losses through parasitic resistances and switching losses. The behavior of the converter is then analyzed for each model by simulation for the voltage gain factor and the conversion efficiency.

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Low cost single stage micro-inverter with MPPT for grid connected applications

Cited by 37 publications

References 24 publications

Performance Comparison between Micro-inverter and String-inverter Photovoltaic Systems

Performance Comparison between Micro-inverter and String-inverter Photovoltaic Systems

The capability Enhancement of DC-link Voltage Using ARPI Controller for Single-Stage Grid-Connected PV System

Performance Analysis of a Boost Converter with Components Losses

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