Logic-Equations Method for Active Voltage-Control of a Flying-Capacitor Multilevel Converter Topology

This paper proposes an innovative active voltage control technique for flying-capacitor (FC) multilevel converters. The proposed active control method on the basis of the logic-equations exploits converter's measured variables including the capacitor voltages and output current to generate a switching state that regulates the FC voltages at reference values and also produces the commanded PWM voltage-level. Simulation results and experimental measurements are provided to confirm the introduced method and derived equations.

[1]  Bin Wu,et al.  The Essential Role and the Continuous Evolution of Modulation Techniques for Voltage-Source Inverters in the Past, Present, and Future Power Electronics , 2016, IEEE Transactions on Industrial Electronics.

[2]  Stanislaw Pirog,et al.  Results of Investigation of Multicell Converters With Balancing Circuit—Part I , 2009, IEEE Transactions on Industrial Electronics.

[3]  P. K. Steimer,et al.  Operation and Control of a Hybrid Seven-Level Converter , 2012, IEEE Transactions on Power Electronics.

[4]  Bin Wu,et al.  Recent Advances and Industrial Applications of Multilevel Converters , 2010, IEEE Transactions on Industrial Electronics.

[5]  S. Pirog,et al.  Results of Investigation of Multicell Converters With Balancing Circuit—Part II , 2009, IEEE Transactions on Industrial Electronics.

[6]  D.G. Holmes,et al.  Natural Capacitor Voltage Balancing for a Flying Capacitor Converter Induction Motor Drive , 2009, IEEE Transactions on Power Electronics.

[7]  Jesús de León-Morales,et al.  Control Design Strategy for Flying Capacitor Multilevel Converters Based on Petri Nets , 2016, IEEE Transactions on Industrial Electronics.

[8]  L.G. Franquelo,et al.  The age of multilevel converters arrives , 2008, IEEE Industrial Electronics Magazine.

[9]  T.A. Meynard,et al.  Optimal Modulation of Flying Capacitor and Stacked Multicell Converters using a State Machine Decoder , 2005, 2005 IEEE 36th Power Electronics Specialists Conference.

[10]  Vahid Dargahi,et al.  New Active Capacitor Voltage Balancing Method for Flying Capacitor Multicell Converter Based on Logic-Form-Equations , 2017, IEEE Transactions on Industrial Electronics.

[11]  T.A. Meynard,et al.  Natural Balance of Multicell Converters: The General Case , 2006, IEEE Transactions on Power Electronics.

[12]  D.G. Holmes,et al.  Analytical Modelling of Voltage Balance Dynamics for a Flying Capacitor Multilevel Converter , 2008, IEEE Transactions on Power Electronics.

[13]  Sanghun Choi,et al.  Capacitor Voltage Balancing of Flying Capacitor Multilevel Converters by Space Vector PWM , 2012, IEEE Transactions on Power Delivery.

[14]  T.A. Meynard,et al.  Natural Balance of Multicell Converters: The Two-Cell Case , 2006, IEEE Transactions on Power Electronics.

[15]  Hirofumi Akagi,et al.  Multilevel Converters: Fundamental Circuits and Systems , 2017, Proceedings of the IEEE.

[16]  Peter Sergeant,et al.  Adding Inverter Fault Detection to Model-Based Predictive Control for Flying-Capacitor Inverters , 2015, IEEE Transactions on Industrial Electronics.

[17]  Yi Deng,et al.  Improved Modulation Scheme for Loss Balancing of Three-Level Active NPC Converters , 2017, IEEE Transactions on Power Electronics.