Isolated Bidirectional Grid-Tied Three-Phase AC–DC Power Conversion Using Series-Resonant Converter Modules and a Three-Phase Unfolder

Power-bidirectional converters are used to integrate energy storage with both dc and ac distribution grids. A modular bidirectional dc–dc converter system consisting of multiple dual-bridge series resonant converter (DBSRC) modules can be reconfigured to extend the system operating range. This paper proposes a modular three-phase ac–dc converter system by adding a line-frequency unfolder to series-connected outputs of two DBSRC modules. The DBSRC modules are controlled to output time-varying currents, which are then reconstructed into sinusoidal ac currents by the unfolder. Compared with a conventional two-stage system with a dc–dc converter and a two-level voltage-source inverter, the DBSRC–unfolder system has smaller dc-link capacitance, negligible unfolder switching loss, reduced line filter size, and faster dynamic response. The system operation and performance are verified on a 1-kW experimental prototype.

[1]  Suleiman M. Sharkh,et al.  Design and Control of a Grid-Connected Interleaved Inverter , 2013 .

[2]  Regan Zane,et al.  Isolated bidirectional DC/AC and AC/DC three-phase power conversion using series resonant converter modules and a three-phase unfolder , 2014, 2014 IEEE 15th Workshop on Control and Modeling for Power Electronics (COMPEL).

[3]  Sandra Zeljkovic,et al.  A three phase bidirectional V2G interface converter based on SiC JFETs , 2015, 2015 17th European Conference on Power Electronics and Applications (EPE'15 ECCE-Europe).

[4]  Frede Blaabjerg,et al.  A Review of Passive Power Filters for Three-Phase Grid-Connected Voltage-Source Converters , 2016, IEEE Journal of Emerging and Selected Topics in Power Electronics.

[5]  K. Oguchi,et al.  A three-phase sine wave inverter system using multiple phase-shifted single-phase resonant inverters , 1990, Conference Record of the 1990 IEEE Industry Applications Society Annual Meeting.

[6]  Josep M. Guerrero,et al.  Control of Distributed Uninterruptible Power Supply Systems , 2008, IEEE Transactions on Industrial Electronics.

[7]  Ling Gu,et al.  A Three-Phase Isolated Bidirectional AC/DC Converter and its Modified SVPWM Algorithm , 2015, IEEE Transactions on Power Electronics.

[8]  Ralph M. Burkart,et al.  Comparative evaluation of SiC and Si PV inverter systems based on power density and efficiency as indicators of initial cost and operating revenue , 2013, 2013 IEEE 14th Workshop on Control and Modeling for Power Electronics (COMPEL).

[9]  Dehong Xu,et al.  A new Zero Voltage Switching three-level NPC inverter , 2015, 2015 IEEE Applied Power Electronics Conference and Exposition (APEC).

[10]  T. Abe,et al.  Design and Performance of a Bidirectional Isolated DC–DC Converter for a Battery Energy Storage System , 2012, IEEE Transactions on Power Electronics.

[11]  Johann W. Kolar,et al.  Optimal ZVS Modulation of Single-Phase Single-Stage Bidirectional DAB AC–DC Converters , 2014, IEEE Transactions on Power Electronics.

[12]  José R. Espinoza,et al.  PWM regenerative rectifiers: state of the art , 2005, IEEE Transactions on Industrial Electronics.

[13]  Alex Q. Huang,et al.  Modulation Technique to Reverse Power Flow for the Isolated Series Resonant DC – DC Converter With Clamped Capacitor Voltage , 2012 .

[14]  F. Blaabjerg,et al.  A review of single-phase grid-connected inverters for photovoltaic modules , 2005, IEEE Transactions on Industry Applications.

[15]  Marcelo A. Pérez,et al.  Multilevel Converters: An Enabling Technology for High-Power Applications , 2009, Proceedings of the IEEE.

[16]  Regan Zane,et al.  Multi-mode control of series and parallel converters for bidirectional power systems , 2014, 2014 IEEE 15th Workshop on Control and Modeling for Power Electronics (COMPEL).

[17]  Dragan Maksimovic,et al.  Small signal phasor modeling of dual active bridge series resonant DC/DC converters with multi-angle phase shift modulation , 2011, 2011 IEEE Energy Conversion Congress and Exposition.

[18]  R. Zane,et al.  Minimum Current Operation of Bidirectional Dual-Bridge Series Resonant DC/DC Converters , 2012, IEEE Transactions on Power Electronics.

[19]  P. T. Krein,et al.  Review of the Impact of Vehicle-to-Grid Technologies on Distribution Systems and Utility Interfaces , 2013, IEEE Transactions on Power Electronics.

[20]  Johann W. Kolar,et al.  VIENNA rectifier II-a novel single-stage high-frequency isolated three-phase PWM rectifier system , 1999, IEEE Trans. Ind. Electron..

[21]  D. Maksimovic,et al.  Gain-scheduled control of multi angle phase shift modulated dual active bridge series resonant DC/DC converters , 2012, 2012 IEEE 13th Workshop on Control and Modeling for Power Electronics (COMPEL).

[22]  Wenhua Liu,et al.  Overview of Dual-Active-Bridge Isolated Bidirectional DC–DC Converter for High-Frequency-Link Power-Conversion System , 2014, IEEE Transactions on Power Electronics.

[23]  Timothy C. Green,et al.  Control and filter design of three-phase inverters for high power quality grid connection , 2003 .

[24]  Chung-Yuen Won,et al.  10kW rapid-charger for electric vehicle considering vehicle to grid(V2G) , 2012, Proceedings of The 7th International Power Electronics and Motion Control Conference.

[25]  Paolo Mattavelli,et al.  Digital Control in Power Electronics , 2006, Digital Control in Power Electronics.

[26]  L. Zhu,et al.  A Novel Soft-Commutating Isolated Boost Full-Bridge ZVS-PWM DC–DC Converter for Bidirectional High Power Applications , 2006, IEEE Transactions on Power Electronics.

[27]  L. Zhu,et al.  A novel soft-commutating isolated boost full-bridge ZVS-PWM DC-DC converter for bidirectional high power applications , 2004, 2004 IEEE 35th Annual Power Electronics Specialists Conference (IEEE Cat. No.04CH37551).