A New Seven-Level Topology for High-Power Medium-Voltage Application

In this article, a new seven-level voltage source converter topology is proposed for high-power medium-voltage applications. The proposed converter has less number of components in the circuit compared to the existing advanced seven-level topologies. All the switches have the same voltage rating. Space vector modulation technique is developed for the proposed topology to balance the flying capacitors voltage. The performance of the proposed converter is evaluated at both steady-state and transient conditions in MATLAB/Simulink. A scaled-down prototype is built to verify the feasibility and performance of the proposed converter at different operating conditions.

[1]  Faouzi Ben Ammar,et al.  Modeling and DBC-PSC-PWM Control of a Three-Phase Flying-Capacitor Stacked Multilevel Voltage Source Inverter , 2010, IEEE Transactions on Industrial Electronics.

[2]  Qiongxuan Ge,et al.  A Novel Seven-Level ANPC Converter Topology and Its Commutating Strategies , 2018, IEEE Transactions on Power Electronics.

[3]  Bin Wu,et al.  A new nested neutral point clamped (NNPC) converter for medium-voltage (MV) power conversion , 2014, 2014 IEEE Applied Power Electronics Conference and Exposition - APEC 2014.

[4]  P. Steimer,et al.  Space Vector Modulation control of a seven-level hybrid converter , 2008, 2008 IEEE Power Electronics Specialists Conference.

[5]  Y. Li,et al.  A Novel Seven-Level Hybrid-Clamped (HC) Topology for Medium-Voltage Motor Drives , 2018, IEEE Transactions on Power Electronics.

[6]  Dushan Boroyevich,et al.  A fast space vector modulation algorithm for multilevel three-phase converters , 1999, Conference Record of the 1999 IEEE Industry Applications Conference. Thirty-Forth IAS Annual Meeting (Cat. No.99CH36370).

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

[8]  Fang Zheng Peng,et al.  Multilevel inverters: a survey of topologies, controls, and applications , 2002, IEEE Trans. Ind. Electron..

[9]  Bin Wu,et al.  High-Power Converters and AC Drives , 2006 .

[10]  R. Iravani,et al.  A Fast and Universal Neuro-Based SVM Algorithm for Multi-Level Converters , 2007, APEC 07 - Twenty-Second Annual IEEE Applied Power Electronics Conference and Exposition.

[11]  K. Gopakumar,et al.  A Hybrid Multilevel Inverter Topology for an Open-End Winding Induction-Motor Drive Using Two-Level Inverters in Series With a Capacitor-Fed H-Bridge Cell , 2010, IEEE Transactions on Industrial Electronics.

[12]  Fang Zheng Peng,et al.  Cascade multilevel inverters for utility applications , 1997, Proceedings of the IECON'97 23rd International Conference on Industrial Electronics, Control, and Instrumentation (Cat. No.97CH36066).

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

[14]  Guozhu Chen,et al.  A novel three-phase seven-level active clamped converter using H-bridge as a level doubling network , 2016, 2016 IEEE 8th International Power Electronics and Motion Control Conference (IPEMC-ECCE Asia).

[15]  Georgios Konstantinou,et al.  Generalisation of flying capacitor-based active-neutralpoint- clamped multilevel converter using voltage-level modulation , 2012 .

[16]  Bin Wu,et al.  A novel seven-level voltage source converter for medium-voltage (MV) applications , 2015, 2015 IEEE Energy Conversion Congress and Exposition (ECCE).