A Three-Phase Active Rectifier Topology for Bipolar DC Distribution

A new three-phase active rectifier topology is proposed for bipolar dc distribution, which can achieve the independent dc-pole control, with only one two-level voltage source converter and an ac-side grounding inductor. The averaged large-signal model and linearized small-signal model of the rectifier are derived in the stationary reference frame. Moreover, a control system is proposed with proper controller parameters. Besides, the rectifier is tested on an experiment platform. Comprehensive experiment results are given and analyzed to validate the function of the proposed rectifier under different operation conditions, including the rectifier start-up performance, rectifier dynamics with unbalanced dc loads for two poles, and rectifier dynamics with asymmetrical dc voltages for two poles. Finally, the proposed rectifier is compared with other two existing ac–dc conversion approaches, in terms of required number and rating of components as well as power losses with different load imbalance levels, which further highlight some potential benefits of the proposed topology.

[1]  F. Casanellas,et al.  Losses in PWM inverters using IGBTs , 1994 .

[2]  Hiroaki Kakigano,et al.  Low-Voltage Bipolar-Type DC Microgrid for Super High Quality Distribution , 2010, IEEE Transactions on Power Electronics.

[3]  Juan C. Vasquez,et al.  DC Microgrids—Part II: A Review of Power Architectures, Applications, and Standardization Issues , 2016, IEEE Transactions on Power Electronics.

[4]  Thomas A. Lipo,et al.  Pulse Width Modulation for Power Converters: Principles and Practice , 2003 .

[5]  M. L. Heldwein,et al.  Comparison of three-phase PWM rectifiers to interface Ac grids and bipolar Dc active distribution networks , 2012, 2012 3rd IEEE International Symposium on Power Electronics for Distributed Generation Systems (PEDG).

[6]  Rainer Marquardt,et al.  Future HVDC-grids employing modular multilevel converters and hybrid DC-breakers , 2013, 2013 15th European Conference on Power Electronics and Applications (EPE).

[7]  D.J. Hammerstrom,et al.  AC Versus DC Distribution SystemsDid We Get it Right? , 2007, 2007 IEEE Power Engineering Society General Meeting.

[8]  Adria Junyent-Ferre,et al.  A New Resonant Modular Multilevel Step-Down DC–DC Converter with Inherent-Balancing , 2015, IEEE Transactions on Power Electronics.

[9]  J. Allan,et al.  Single pole-to-earth fault detection and location on a fourth-rail DC railway system , 2004 .

[10]  Mesut Baran,et al.  DC distribution for industrial systems: opportunities and challenges , 2002, IEEE Technical Conference Industrial and Commerical Power Systems.

[11]  Anders Blomberg,et al.  The Hybrid HVDC Breaker An innovation breakthrough enabling reliable HVDC grids , 2012 .

[12]  Robert W. Erickson,et al.  Fundamentals of Power Electronics , 2001 .

[13]  A. Sannino,et al.  Low-Voltage DC Distribution System for Commercial Power Systems With Sensitive Electronic Loads , 2007, IEEE Transactions on Power Delivery.

[14]  D. Boroyevich,et al.  Small-signal modeling and control of three-phase PWM converters , 1994, Proceedings of 1994 IEEE Industry Applications Society Annual Meeting.

[15]  Donald Grahame Holmes,et al.  Stationary frame current regulation of PWM inverters with zero steady state error , 1999, 30th Annual IEEE Power Electronics Specialists Conference. Record. (Cat. No.99CH36321).

[16]  C. C. Chan,et al.  The State of the Art of Electric, Hybrid, and Fuel Cell Vehicles , 2007, Proceedings of the IEEE.

[17]  R. Wu,et al.  Analysis of a PWM AC to DC voltage source converter under predicted current control with fixed switching frequency , 1990, Fifth Annual Proceedings on Applied Power Electronics Conference and Exposition.

[18]  Juan C. Vasquez,et al.  Advanced LVDC Electrical Power Architectures and Microgrids: A step toward a new generation of power distribution networks. , 2014, IEEE Electrification Magazine.

[19]  Marcelo L. Heldwein,et al.  Evaluation of power converters to implement bipolar DC active distribution networks — DC-DC converters , 2011, 2011 IEEE Energy Conversion Congress and Exposition.

[20]  Weidong Xiao,et al.  Analysis and Evaluation of DC-Link Capacitors for High-Power-Density Electric Vehicle Drive Systems , 2012, IEEE Transactions on Vehicular Technology.

[21]  A. M. Hava,et al.  A DC bus capacitor design method for various inverter applications , 2012, 2012 IEEE Energy Conversion Congress and Exposition (ECCE).

[22]  Juan C. Vasquez,et al.  DC Microgrids—Part I: A Review of Control Strategies and Stabilization Techniques , 2016, IEEE Transactions on Power Electronics.

[23]  R. Iravani,et al.  A generalized state-space averaged model of the three-level NPC converter for systematic DC-voltage-balancer and current-controller design , 2005, IEEE Transactions on Power Delivery.

[24]  Frede Blaabjerg,et al.  Overview of Control and Grid Synchronization for Distributed Power Generation Systems , 2006, IEEE Transactions on Industrial Electronics.

[25]  Adria Junyent-Ferre,et al.  Operation of HVDC Modular Multilevel Converters under DC pole imbalances , 2014, 2014 16th European Conference on Power Electronics and Applications.

[26]  Yunjie Gu,et al.  Analysis and Control of Bipolar LVDC Grid With DC Symmetrical Component Method , 2016, IEEE Transactions on Power Systems.

[27]  A. Mariscotti,et al.  Analysis of the DC-link current spectrum in voltage source inverters , 2002 .

[28]  Se-Kyo Chung,et al.  A phase tracking system for three phase utility interface inverters , 2000 .

[29]  Prasad Enjeti,et al.  An improved inverter output filter configuration reduces common and differential modes dv/dt at the motor terminals in PWM drive systems , 1998 .

[30]  A. Sannino,et al.  Protection of Low-Voltage DC Microgrids , 2009, IEEE Transactions on Power Delivery.

[31]  Tero Kaipia,et al.  An LVDC distribution system concept , 2008 .

[32]  Bin Wu,et al.  Electric Vehicle Charging Station Using a Neutral Point Clamped Converter With Bipolar DC Bus , 2015, IEEE Transactions on Industrial Electronics.

[33]  Henry Shu-Hung Chung,et al.  Modified Cascaded Boundary-Deadbeat Control for a Virtually-Grounded Three-Phase Grid-Connected Inverter With LCL Filter , 2017, IEEE Transactions on Power Electronics.