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Renewable energies have been growing worldwide in the recent years to avoid environmental degradation. Among the renewable sources, solar energy is regarded as the most promising candidate and is expected to be the foundation of a sustainable energy economy, as sunlight is the most abundant resource. Recently, standalone building integrated photovoltaic systems (SBIPVs) have risen as a solution to reduce the electrical needs of buildings, in which photovoltaic cells are integrated into the construction envelope. The need for further integration between photovoltaic systems and batteries is of paramount importance, requiring an improvement in the energy conversion paradigm.

The development of a three-port bidirectional converter for SBIPVs is the main focus of this project. A review of currently in research topologies is done, selecting the most suitable for the application. A theoretical analysis of the selected topology is performed, with a validation of the computations present in the reference paper. A simulation of the converter circuit is designed to assess its different characteristics and operating range. A design procedure is followed with a choice of the different parameters that will define the converter in order to meet the requirements of the application in hand, with a theoretical and simulation analysis process. A prototype of the designed converter is finally done to experimentally validate its functionality through a testing phase.

converter --- multiport --- power electronics --- sbipv --- Ingénierie, informatique & technologie > Ingénierie électrique & électronique

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Nowadays, renewable energy sources take a larger share in energy production. Power electronics converters are extensively used to optimize energy yield, and interface those renewable energy sources with the electrical grid. As such, industries tend to develop more and more complex controllers for power electronics converters, and there is a need for tools to validate controller design in real-life conditions before implementation. \

This thesis focuses on one emulation technique called “hardware-in-the-loop” (HIL). HIL devices can be used to simulate the dynamics of power electronics converters in real-time, thanks to their extensive computational capabilities. They can also interface hardware devices with models developed on software. This is especially useful if one wants to validate the design of a controller, once it is deported on a hardware device, to identify any possible implementation issues. \

The thesis is divided into two parts. The first part highlights the advantages of the HIL technique for validation of controller design. A model of a battery charger is designed, and the switching operations are performed by a controller. The controller is either simulated in the same environment as the battery charger, or deported on a real control board interfaced with the battery charger emulation. The second part highlights the advantages of the HIL technique for the simulation of power electronics converters and demonstrates the reliability of HIL simulation.
Therefore, measurements from a real converter from CE+T power products, are compared with HIL simulation data. In order to perform the simulation, the real converter is modeled inside the Typhoon HIL software and the control board of the real converter is interfaced with the HIL device. \

Finally, the comparison results are discussed and the potential of HIL for future work is evoked.

Power Converter --- HIL --- Hardware in the loop --- Simulation --- Emulation --- DC/DC --- Digital-twin --- Typhoon HIL --- Power electronics --- Ingénierie, informatique & technologie > Ingénierie électrique & électronique