Interleaving technique of series connected module-integrated converters for PV systems: Novel approach and system analysis

Hu, Bing; Sathiakumar, S.

doi:10.1109/isie.2012.6237362

Cited by 6 publications

(2 citation statements)

References 20 publications

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“…2(c) provides maximum flexibility in choosing the string configuration, allowing to apply simultaneously MPPT to PV array sections with different operating conditions, different length and different types of solar cells. Moreover, as the MPPT converter outputs are connected in series, it provides any selected dc-link voltage without using high voltage strings or converters with high step-up factor [11,12]. It also avoids to have solar panels at a voltage with respect to ground close to the dc-link voltage, resulting in reduced risks of electrical shock in the case of accidents.…”

Section: Mppt In Inhomogeneous Pv Arraysmentioning

confidence: 99%

Series-connected converters with individual MPPT for BIPV

Macellari

Grasselli

Capponi

et al. 2013

2013 International Conference on Clean Electrical Power (ICCEP)

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Building Integrated PhotoVoltaics suffer for mismatching among the operating conditions of different regions of installations. Safety is another typical concern. In this work, we propose to face both issues by arranging the solar array in several sections provided with individual converters, capable to operate in the MPPT mode. Each converter is insulated, so that several converters are connected in series in order to reach the desired dc-link voltage, while maintaining the maximum voltage across the solar array within safety limits. The approach was tested by means of a demonstrator consisting of N3 flyback converters. Each converter was equipped with separate MPPT. The proposed system was characterised under variable shading conditions. We verified that the dc-link voltage tends to distribute among outputs of single module converters proportionally to the respective input power. In the presence of high levels of shading it was advantageous with respect to other PV plant configurations. © 2013 IEEE

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Section: Mppt In Inhomogeneous Pv Arraysmentioning

confidence: 99%

Series-connected converters with individual MPPT for BIPV

Macellari

Grasselli

Capponi

et al. 2013

2013 International Conference on Clean Electrical Power (ICCEP)

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“…A soft switching interleaved boost topology with high‐voltage gain is proposed in this paper, whose advantages are: low‐voltage stress across the main switches, natural voltage balancing between output capacitors [23], low input current ripple and magnetic components operating at twice switching frequency. As the main drawbacks, there is the duty cycle limitation, which must be higher than 50%; and the need for soft start and initial charge of output capacitors, which is typical in topologies derived from the conventional boost converter.…”

Section: Introductionmentioning

confidence: 99%

Soft switching high‐voltage gain dc–dc interleaved boost converter

Aquino¹,

Tofoli

Praça

et al. 2015

IET Power Electronics

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This study presents the qualitative and quantitative analyses, design procedure and experimental results on a soft switching cell applied to a high-voltage gain interleaved boost converter. An active snubber cell is proposed as a possible solution for the increase of efficiency in a hard switching topology, where switching losses are drastically minimised. The main advantages of the introduced circuit are the common source terminal to all switches; zero-voltage switching of the main switches; zero current switching of the auxiliary switches; low-voltage stress across the switches; balanced voltage across the output capacitors; the presence of a magnetic coupling cell, which allows the gain to be significantly increased; and the magnetic components that are designed for twice the switching frequency. A prototype rated at 500 W is implemented and evaluated, where relevant issues are discussed to validate the theoretical assumptions.

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A high gain soft-switching active-clamped coupled-inductor-based converter for grid-tied photovoltaic applications

Kokkonda

Kulkarni

2021

Electr Eng

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Interleaving technique of series connected module-integrated converters for PV systems: Novel approach and system analysis

Cited by 6 publications

References 20 publications

Series-connected converters with individual MPPT for BIPV

Series-connected converters with individual MPPT for BIPV

Soft switching high‐voltage gain dc–dc interleaved boost converter

A high gain soft-switching active-clamped coupled-inductor-based converter for grid-tied photovoltaic applications

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