A current controller for a grid-tied, cascade multilevel inverter

A cascade multilevel inverter is simulated and implemented to supply power to the grid from a set of 4 isolated batteries. The phase-shifted carrier PWM modulation strategy is employed in this article, increasing the frequency of the output current. A PI controller is applied to achieve a connection to the grid. Simulation results supplying current on phase, leading and lagging are shown, and experimental results validate the prototype built.

[1]  Rafael Diez,et al.  Variation of a sliding mode control applied to a trinary hybrid multilevel inverter , 2017, 2017 IEEE 3rd Colombian Conference on Automatic Control (CCAC).

[2]  Yuyao He,et al.  Phase-Shifted Suboptimal Pulse-Width Modulation Strategy for Multilevel Inverter , 2006, 2006 1ST IEEE Conference on Industrial Electronics and Applications.

[3]  Guillaume Gateau,et al.  MVDC Three-Wire Supply Systems for Electric Railways: Design and Test of a Full SiC Multilevel Chopper , 2017, IEEE Transactions on Industry Applications.

[4]  Diego Patino,et al.  Modeling and control of a grid tied differential Cuk Inverter , 2017, 2017 IEEE Workshop on Power Electronics and Power Quality Applications (PEPQA).

[5]  Qi Zhang,et al.  Selective Harmonic Elimination With Groebner Bases and Symmetric Polynomials , 2016, IEEE Transactions on Power Electronics.

[6]  Fredy Ruiz,et al.  Self-balancing control strategy for a battery based H-bridge multilevel inverter , 2017, 2017 IEEE Workshop on Power Electronics and Power Quality Applications (PEPQA).

[7]  S.G. Srivani,et al.  Modified phase shifted PWM for cascaded H bridge multilevel inverter , 2017, 2017 Third International Conference on Advances in Electrical, Electronics, Information, Communication and Bio-Informatics (AEEICB).

[8]  S. S. Jayasinghe,et al.  Diode-Clamped Three-Level Inverter-Based Battery/Supercapacitor Direct Integration Scheme for Renewable Energy Systems , 2011, IEEE Transactions on Power Electronics.