A Switched-Capacitor Inverter with Optimized Switch-count Considering Load Power Factor

In this paper, an optimized topology for switched-capacitor (SC) multilevel inverter is proposed. The proposed topology, which is referred to as Optimized Switched-Capacitor Multilevel Inverter (OSC-MI), offers a boosted staircase voltage by using only one dc source and fewer switches count. Since each industrial load requires a specific power factor (PF), an optimal converter can be designated in a way that it both satisfies the required PF and employs fewer switches and gate drivers. Therefore, the main strategy of reducing switches count in the proposed topology is to design the converter according to the required PF value. In this paper, the theoretical analytics and comparison results are followed by MATLAB/SIMULINK simulation results to verify the inverter's capabilities.

[1]  Adib Abrishamifar,et al.  A switched-capacitor multilevel inverter for high AC power systems with reduced ripple loss using SPWM technique , 2015, The 6th Power Electronics, Drive Systems & Technologies Conference (PEDSTC2015).

[2]  Liuchen Chang,et al.  Cascaded multilevel inverter using series connection of novel capacitor-based units with minimum switch count , 2016 .

[3]  Frede Blaabjerg,et al.  A Modular Multilevel Converter with Boosting, Self-Balancing, and Scaling Capabilities for High- Voltage Transformerless PV Applications , 2018, 2018 IEEE 4th Southern Power Electronics Conference (SPEC).

[4]  Ka Wai Eric Cheng,et al.  A Step-Up Switched-Capacitor Multilevel Inverter With Self-Voltage Balancing , 2014, IEEE Transactions on Industrial Electronics.

[5]  Ebrahim Babaei,et al.  Single-Inductor Dual-Output DC–DC Converter With Capability of Feeding a Constant Power Load in Open-Loop Manner , 2019, IEEE Transactions on Industrial Electronics.

[6]  Mohammad Rezanejad,et al.  A Self-Balanced Step-Up Multilevel Inverter Based on Switched-Capacitor Structure , 2018, IEEE Transactions on Power Electronics.

[7]  Zhong Du,et al.  DC–AC Cascaded H-Bridge Multilevel Boost Inverter With No Inductors for Electric/Hybrid Electric Vehicle Applications , 2009, IEEE Transactions on Industry Applications.

[8]  Seyed Hossein Hosseini,et al.  A New Cascaded Switched-Capacitor Multilevel Inverter Based on Improved Series–Parallel Conversion With Less Number of Components , 2016, IEEE Transactions on Industrial Electronics.

[9]  Frede Blaabjerg,et al.  A Simple Differential Mode EMI Suppressor for the $LLCL$-Filter-Based Single-Phase Grid-Tied Transformerless Inverter , 2015, IEEE Transactions on Industrial Electronics.

[10]  Ebrahim Babaei,et al.  An Extended Quasi-switched Z-Source Inverter , 2019, 2019 10th International Power Electronics, Drive Systems and Technologies Conference (PEDSTC).

[11]  M. Swarnalatha,et al.  A Switched-Capacitor Inverter Using Series / Parallel Conversion with Inductive Load , 2013 .

[12]  Frede Blaabjerg,et al.  Real-Time Calculation Method for Single-Phase Cascaded H-Bridge Inverters Based on Phase-Shifted Carrier Pulsewidth Modulation , 2020, IEEE Transactions on Power Electronics.

[13]  Mehdi Abapour,et al.  Switched-Capacitor-Based Single-Source Cascaded H-Bridge Multilevel Inverter Featuring Boosting Ability , 2019, IEEE Transactions on Power Electronics.

[14]  Ebrahim Babaei,et al.  Modified high voltage gain switched boost inverter , 2017 .

[15]  Cassiano Rech,et al.  Comprehensive Analysis of Single-Phase Full-Bridge Asymmetrical Flying Capacitor Inverters , 2019, IEEE Transactions on Industry Applications.

[16]  Seyed Hossein Hosseini,et al.  A multilevel boost converter based on a switched-capacitor structure , 2017, 2017 10th International Conference on Electrical and Electronics Engineering (ELECO).

[17]  Mehdi Abapour,et al.  Reconfigurable Multilevel Inverter With Fault-Tolerant Ability , 2018, IEEE Transactions on Power Electronics.

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

[19]  Asghar Taheri,et al.  Reduction of Power Electronic Components in Multilevel Converters Using New Switched Capacitor-Diode Structure , 2016, IEEE Transactions on Industrial Electronics.

[20]  Liuchen Chang,et al.  Generalized Structure for a Single Phase Switched-Capacitor Multilevel Inverter Using a New Multiple DC Link Producer With Reduced Number of Switches , 2016, IEEE Transactions on Power Electronics.

[21]  Saikat Majumdar,et al.  Implementation of an Optimum Reduced Components Multicell Multilevel Inverter (MC-MLI) for Lower Standing Voltage , 2020, IEEE Transactions on Industrial Electronics.