7L-SCBI topology with minimal semiconductor device count

In this work, a seven-level switched capacitor boost inverter (7L-SCBI) is proposed with minimal resource count. The proposed inverter requires only eight switches and two capacitors to generate a seven-level voltage. The proposed 7L-SCBI is capable of generating a multilevel voltage as well as boost the input DC-link voltage up to 1.5 times with a reduced blocking voltage of switches and capacitors. The comparison in terms of efficiency and device count with other switched capacitor topologies is presented in detail. The performance validation of the proposed 7L-SCBI is done with the help of a laboratory prototype.

[1]  Kent Bertilsson,et al.  A General Review of Multilevel Inverters Based on Main Submodules: Structural Point of View , 2019, IEEE Transactions on Power Electronics.

[2]  Mohammad Rezanejad,et al.  Multi‐level inverter with combined T‐type and cross‐connected modules , 2018, IET Power Electronics.

[3]  Kyo-Beum Lee,et al.  New Family of Boost Switched-Capacitor Seven-Level Inverters (BSC7LI) , 2019, IEEE Transactions on Power Electronics.

[4]  Frede Blaabjerg,et al.  An Improved Seven-Level PUC Inverter Topology With Voltage Boosting , 2020, IEEE Transactions on Circuits and Systems II: Express Briefs.

[5]  N. Sandeep,et al.  A Self-Balancing Five-Level Boosting Inverter With Reduced Components , 2019, IEEE Transactions on Power Electronics.

[6]  Jun Zeng,et al.  Switched-Capacitor-Based Active-Neutral-Point-Clamped Seven-Level Inverter With Natural Balance and Boost Ability , 2019, IEEE Access.

[7]  Junfeng Liu,et al.  A Seven-Level Inverter With Self-Balancing and Low-Voltage Stress , 2020, IEEE Journal of Emerging and Selected Topics in Power Electronics.

[8]  Sze Sing Lee,et al.  Dual-T-Type Seven-Level Boost Active-Neutral-Point-Clamped Inverter , 2019, IEEE Transactions on Power Electronics.

[9]  N. Sandeep,et al.  A Switched-Capacitor-Based Multilevel Inverter Topology With Reduced Components , 2018, IEEE Transactions on Power Electronics.

[10]  Mehdi Seyedmahmoudian,et al.  Dual input switched‐capacitor‐based single‐phase hybrid boost multilevel inverter topology with reduced number of components , 2020, IET Power Electronics.

[11]  Frede Blaabjerg,et al.  A New Switched Capacitor 7L Inverter With Triple Voltage Gain and Low Voltage Stress , 2020, IEEE Transactions on Circuits and Systems II: Express Briefs.

[12]  Sivakumar Keerthipati,et al.  A Multilevel Inverter Configuration for an Open-End-Winding Pole-Phase-Modulated-Multiphase Induction Motor Drive Using Dual Inverter Principle , 2018, IEEE Transactions on Industrial Electronics.

[13]  Saad Mekhilef,et al.  Optimal Design of a New Cascaded Multilevel Inverter Topology With Reduced Switch Count , 2019, IEEE Access.

[14]  Shuai Xu,et al.  A novel hybrid five-level voltage source converter based on T-type topology for high-efficiency applications , 2016, 2016 IEEE Energy Conversion Congress and Exposition (ECCE).