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Distributed DC/DC architecture for an LVDC hydrogen production microgrid based on concentrated photovoltaïc sources

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HAL Id: hal-01702956

https://hal.archives-ouvertes.fr/hal-01702956

Submitted on 7 Feb 2018

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Distributed DC/DC architecture for an LVDC hydrogen production microgrid based on concentrated

photovoltaïc sources

Kolja Neuhaus, Corinne Alonso

To cite this version:

Kolja Neuhaus, Corinne Alonso. Distributed DC/DC architecture for an LVDC hydrogen production

microgrid based on concentrated photovoltaïc sources. Workshop LIA NextPV 2017, Dec 2017, Tokyo,

Japan. 1p., 2017. �hal-01702956�

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Laboratoire conventionné avec l’Université Fédérale Toulouse Midi-Pyrénées LAAS-CNRS

/ Laboratoire d’analyse et d’architecture des systèmes du CNRS

Distributed DC/DC architecture for an LVDC hydrogen production microgrid based on concentrated

photovoltaïc sources

Kolja Neuhaus, Corinne Alonso

In the context of the decrease of fossil fuels and ecological transition, hydrogen production has been identified as a solution for storage consuption of renewable energies. High efficiency solar cells can be used in conjunction with solar concentration to further push the limits of photovoltaïc energy production. In order to maximize this production, high precision solar tracking in addition to optimized conversion devices are needed. In this study, a distributed DC/DC architecture is proposed with a Low Voltage DC microgrid, aiming to optimize energy flows between high efficiency concentrated photovoltaïc production and hydrogen production from electrolyzers.

LVDC microgrid for hydrogen production based on concentrated PV

DC

DC H +

Conversion stage SWITCH matrix

EC + battery part

TANKS

DC

DC DC

DC

DC

DC DC

DC

DC

DC

Distributed architecture

Concentrated Photovoltaics

CPV CPV CPV CPV

CPV CPV H2O

DC Bus

EC1 EC2

Storage

Lithium Ni-MH Supercap

DC

DC

SWITCH CONTROL MPPT

CPV part

RCAST, Tokyo Modelizing CPV, converters and batteries

Concentrated PV + Tracking

High efficiency cells + fresnel lenses and concentrators

RCAST, Tokyo

2 axis Solar Tracker

TdAPS

(Time derived Astronomical Positioning System)

Distributed converter architecture

One Single DC/DC Boost

converter for each CPV cell + separate MPPT for each.

Exploiting different functionning points, optimizing energy flow

The ADREAM platform

LAAS-CNRS, Toulouse, France

AC microgrid for energy production and consumption.

DC microgrid + storage : Lead-acid batteries + supercapacities LAAS, Toulouse

Perspectives

Experimental test with small size electrolyzer cells + CPV

Modelizing Electrolyzer cells in collaboration with RCAST, Tokyo (Equivalent circuit models, EIS) Extrapolating results for bigger scale hydrogen production.

RCAST, Tokyo

LAAS-CNRS, Toulouse

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