New Topologies, Design, Modeling and Control of DC-DC Converters in Power Systems

Dear Colleagues,

DC-DC converters play a very important role as an enabling technology in the latest trends in novel power systems. Virtual Power Plants, massive energy storage in batteries, energy recuperators connected to railway catenaries, solid state transformers, the vehicle to grid initiative, etc. include DC-DC converters as one of their essential elements. These converters, necessarily bi-directional, face several challenges from the power stage point of view:

• High power (tens to hundreds of kilowatts up to 1–2 megawatts)
• High voltage (1500V renewable energy standards and 3000V on railway applications)
• Medium switching frequencies (5–10 kHz)

On the other hand, new challenges are also arising in modulation and control:

• Extending the range of soft switching and reducing rms currents require optimizing and reconfiguring the modulator in real time
• The dynamic interaction of the converter with the system in which it is integrated requires advances in modelling strategies and control techniques

This Special Issue focuses on new topologies of DC-DC converters to be integrated in new electrical networks, their design, modelling and control. Original papers will be accepted in all areas related to the above aspects. Topics of interest for publication include, but are not limited to, the following:

• Innovative power topologies
• Design and multi-objective optimization techniques of transformers and inductances specific to these converters
• Multi-objective converter design and optimization techniques including the cooling system
• Modelling of parasitic lay-out elements and new active snubbers
• Real-time optimization and reconfiguration techniques for PWM modulators
• Modelling strategies and identification of system uncertainties
• Control techniques oriented to the stabilization of a system with multiple converters and multiple power flows

Prof. Dr. Antonio Lazaro
Guest Editor

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