Single-Stage Boost Modular Multilevel Converter (BMMC) for Energy Storage Interface

Single-stage DC-AC power converters are gaining higher attention due to their simpler structure compared to the two-stage equivalent solution. In this paper, a single-stage DC-AC converter solution is proposed for interfacing a low voltage (LV) DC source with a higher voltage AC load or grid, where this converter has a modular structure with multilevel operation. The proposed converter, which is called boost modular multilevel converter (BMMC), comprises the boosting capability within the inversion operation, and it is mainly dedicated for interfacing LV energy storage systems, such as fuel cells and batteries, and it allows the use of LV MOSFETs (« 300 V), in order to utilize their low ON-state resistance, along with LV electrolytic capacitors. This converter is introduced and analysed in this paper, where simulation results using PLECS, considering a 10 kW three-phase BMMC, are presented in order to verify its functionality.

[1]  Tsai-Fu Wu,et al.  Power Loss Comparison of Single- and Two-Stage Grid-Connected Photovoltaic Systems , 2011, IEEE Transactions on Energy Conversion.

[2]  Rainer Marquardt,et al.  An innovative modular multilevel converter topology suitable for a wide power range , 2003, 2003 IEEE Bologna Power Tech Conference Proceedings,.

[3]  Paolo Mattavelli,et al.  Bidirectional DC-DC Converter Topologies for Low-Voltage Battery Interface: Comparative Assessment , 2018, 2018 IEEE 4th International Forum on Research and Technology for Society and Industry (RTSI).

[4]  Pablo Correa,et al.  Control of a Single-Phase Cascaded H-Bridge Multilevel Inverter for Grid-Connected Photovoltaic Systems , 2009, IEEE Transactions on Industrial Electronics.

[5]  Stephen J. Finney,et al.  LV Converters: Improving Efficiency and EMI Using Si MOSFET MMC and Experimentally Exploring Slowed Switching , 2018, IEEE Journal of Emerging and Selected Topics in Power Electronics.

[6]  L.M. Redondo,et al.  High-voltage high-frequency Marx-bank type pulse generator using integrated power semiconductor half-bridges , 2005, 2005 European Conference on Power Electronics and Applications.

[7]  Emil Levi,et al.  An EV Drive-Train With Integrated Fast Charging Capability , 2016, IEEE Transactions on Power Electronics.

[8]  D. Soto,et al.  A comparison of high-power converter topologies for the implementation of FACTS controllers , 2002, IEEE Trans. Ind. Electron..

[9]  Sergio M. A. Cruz,et al.  Cooperative and Dynamically Weighted Model Predictive Control of a 3-Level Uninterruptible Power Supply With Improved Performance and Dynamic Response , 2020, IEEE Transactions on Industrial Electronics.

[10]  Mehdi Savaghebi,et al.  DC-Link Protection and Control in Modular Uninterruptible Power Supply , 2018, IEEE Transactions on Industrial Electronics.

[11]  Kashem M. Muttaqi,et al.  State-of-the-Art of the Medium-Voltage Power Converter Technologies for Grid Integration of Solar Photovoltaic Power Plants , 2019, IEEE Transactions on Energy Conversion.

[12]  Stephen J. Finney,et al.  MMC with parallel-connected MOSFETs as an alternative to wide bandgap converters for LVDC distribution networks , 2017 .

[13]  S. Jayachitra,et al.  Power Loss Comparison of Single- and Two-Stage Grid- Connected Photovoltaic Systems , 2014 .

[14]  Felipe Rosa,et al.  Integration of Fuel Cell Technologies in Renewable-Energy-Based Microgrids Optimizing Operational Costs and Durability , 2016, IEEE Transactions on Industrial Electronics.

[15]  Paolo Mattavelli,et al.  Decoupled Control Scheme of Grid-Connected Split-Source Inverters , 2017, IEEE Transactions on Industrial Electronics.

[16]  Paolo Mattavelli,et al.  Coupled-Inductor-Based DC Current Measurement Technique for Transformerless Grid-Tied Inverters , 2018, IEEE Transactions on Power Electronics.

[17]  Stephen J. Finney,et al.  High-Efficiency mosfet-Based MMC Design for LVDC Distribution Systems , 2018, IEEE Transactions on Industry Applications.

[18]  Hirofumi Akagi,et al.  Classification, Terminology, and Application of the Modular Multilevel Cascade Converter (MMCC) , 2010, IEEE Transactions on Power Electronics.

[19]  Martin Jones,et al.  An Open-End Winding Four-Level Five-Phase Drive , 2016, IEEE Transactions on Industrial Electronics.

[20]  Dushan Boroyevich,et al.  Design and Comparison of Cascaded H-Bridge, Modular Multilevel Converter, and 5-L Active Neutral Point Clamped Topologies for Motor Drive Applications , 2018, IEEE Transactions on Industry Applications.

[21]  S. Allebrod,et al.  New transformerless, scalable Modular Multilevel Converters for HVDC-transmission , 2008, 2008 IEEE Power Electronics Specialists Conference.