Modulation strategy and control of Modular Cascade H-Bridge Converters as Input-side of a Multi-port Smart Transformer

This article is about the cascade connection of several H-bridges as the input side of a multi-port Smart Transformer. The paper discusses its unipolar control strategy with two different modulation techniques by connecting different loads in each module or port. The operation of both techniques and the distribution of voltage and current is analyzed using co-simulation with PSIM and SIMULINK. The best technique is determined with the study from the harmonic and efficiency point of view.

[1]  Kavita Singh,et al.  An Efficient Technique to reduce Total Harmonics Distortion in Cascaded H- Bridge Multilevel Inverter , 2019, 2019 IEEE International Conference on Electrical, Computer and Communication Technologies (ICECCT).

[2]  Leopoldo G. Franquelo,et al.  Adaptive phase-shifted PWM for multilevel cascaded H-bridge converters with large number of power cells , 2017, 2017 11th IEEE International Conference on Compatibility, Power Electronics and Power Engineering (CPE-POWERENG).

[3]  Josep M. Guerrero,et al.  Microgrid Transactive Energy Systems: A Perspective on Design, Technologies, and Energy Markets , 2019, IECON 2019 - 45th Annual Conference of the IEEE Industrial Electronics Society.

[4]  J. I. Leon,et al.  High-quality Output Voltage of Multilevel Cascaded H-bridge Converters with Large Number of Cells with Unequal DC Voltages , 2019, 2019 IEEE 13th International Conference on Compatibility, Power Electronics and Power Engineering (CPE-POWERENG).

[5]  Prayag Ratan Bute,et al.  Simulation Study of Cascade H-bridge Multilevel Inverter 7-Level Inverter by SHE Technique , 2020, 2020 Fourth International Conference on Computing Methodologies and Communication (ICCMC).

[6]  C. M. Nirmal Mukundan,et al.  Isolated SEPIC converter fed trinary hybrid cascaded H-bridge multilevel inverter for solar PV system , 2017, 2017 IEEE Region 10 Symposium (TENSYMP).

[7]  Patil Swapnil Sanjay,et al.  Symmetrical Multilevel Cascaded H-Bridge Inverter Using Multicarrier SPWM Technique , 2018, 2018 3rd International Conference for Convergence in Technology (I2CT).

[8]  Marco Liserre,et al.  The Smart Transformer: A solid-state transformer tailored to provide ancillary services to the distribution grid , 2017, IEEE Power Electronics Magazine.

[9]  Deepak Ronanki,et al.  Modular Multilevel Converters for Transportation Electrification: Challenges and Opportunities , 2018, IEEE Transactions on Transportation Electrification.

[10]  Bhim Singh,et al.  A controller for cascaded h-bridge multilevel inverter , 2016, 2016 IEEE 7th Power India International Conference (PIICON).

[11]  Ricardo C. L. F. Oliveira,et al.  Design of a robust PI controller for a dual active bridge converter , 2016, 2016 12th IEEE International Conference on Industry Applications (INDUSCON).