A Space-Vector Modulation Method for Common-Mode Voltage Reduction in Current-Source Converters

The common-mode voltage (CMV) produced from a converter system is a source of many problems, e.g., in the motor drive system, CMV might appear at the neutral point of the motor stator windings with respect to the ground and induce destructive bearing current. Reduced CMV space-vector modulation (RCMV SVM) methods have been proposed in both voltage-source converter (VSC) and current-source converter (CSC) systems. The available RCMV SVMs reduce the CMV by avoiding using zero-state vectors. However, this will lead to some negative effects, such as shrink of modulation index range, increase of switching frequencies, bipolar line-to-line voltage pulse patterns in VSCs, and power quality performance deterioration. In this paper, a RCMV SVM method for CSCs is proposed. By allowing the use of zero-state vectors, the proposed RCMV SVM still produces much lower CMV. However, its other performance indices, such as switching frequency and harmonic performance, are unaffected and comparable to the conventional SVMs. The effectiveness of the proposed RCMV SVM for CSCs is verified in the simulations and experiments.

[1]  N. Zargari,et al.  Hybrid PWM for High-Power Current-Source-Inverter-Fed Drives With Low Switching Frequency , 2011, IEEE Transactions on Power Electronics.

[2]  Yun Wei Li,et al.  Control and Resonance Damping of Voltage-Source and Current-Source Converters With $LC$ Filters , 2009, IEEE Transactions on Industrial Electronics.

[3]  M.F. Naguib,et al.  Space Vector Modulation for Low Switching Frequency Current Source Converters With Reduced Low-Order Noncharacteristic Harmonics , 2009, IEEE Transactions on Power Electronics.

[4]  Alfio Consoli,et al.  Reduction of common mode currents in PWM inverter motor drives , 1997, IAS '97. Conference Record of the 1997 IEEE Industry Applications Conference Thirty-Second IAS Annual Meeting.

[5]  H. Akagi,et al.  Modeling and damping of high-frequency leakage currents in PWM inverter-fed AC motor drive systems , 1995, IAS '95. Conference Record of the 1995 IEEE Industry Applications Conference Thirtieth IAS Annual Meeting.

[6]  Bin Wu,et al.  An integrated DC link choke for elimination of motor common-mode voltage in medium voltage drives , 2001, Conference Record of the 2001 IEEE Industry Applications Conference. 36th IAS Annual Meeting (Cat. No.01CH37248).

[7]  Bin Wu,et al.  A Current-Source-Converter-Based High-Power High-Speed PMSM Drive With 420-Hz Switching Frequency , 2012, IEEE Transactions on Industrial Electronics.

[8]  Yen-Shin Lai,et al.  Optimal common-mode voltage reduction PWM technique for inverter control with consideration of the dead-time effects-part II: applications to IM drives with diode front end , 2004, IEEE Transactions on Industry Applications.

[9]  Bin Wu,et al.  DC link current minimization for high power current source motor drives , 2008, 2008 IEEE Power Electronics Specialists Conference.

[10]  Bin Wu,et al.  A Multisampling SVM Scheme for Current Source Converters With Superior Harmonic Performance , 2009, IEEE Transactions on Power Electronics.

[11]  Yen-Shin Lai,et al.  Optimal common-mode Voltage reduction PWM technique for inverter control with consideration of the dead-time effects-part I: basic development , 2004, IEEE Transactions on Industry Applications.

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

[13]  Bin Wu,et al.  Voltage stress on induction motors in medium voltage (2300 to 6900 V) PWM GTO CSI drives , 1995, Proceedings of PESC '95 - Power Electronics Specialist Conference.

[14]  N. Zargari,et al.  Power-Factor Compensation for PWM CSR–CSI-Fed High-Power Drive System Using Flux Adjustment , 2009, IEEE Transactions on Power Electronics.

[15]  Bin Wu,et al.  Space Vector Sequence Investigation and Synchronization Methods for Active Front-End Rectifiers in High-Power Current-Source Drives , 2008, IEEE Transactions on Industrial Electronics.

[16]  Bin Wu,et al.  High-Power Converters and ac Drives: Wu/High-Power Converters and ac Drives , 2006 .

[17]  Samir Kouro,et al.  Modeling and analysis of common-mode voltages generated in medium voltage PWM-CSI drives , 2003 .

[18]  Bin Wu,et al.  An Input Power Factor Control Strategy for High-Power Current-Source Induction Motor Drive With Active Front-End , 2010, IEEE Transactions on Power Electronics.

[19]  A.M. Hava,et al.  A Near-State PWM Method With Reduced Switching Losses and Reduced Common-Mode Voltage for Three-Phase Voltage Source Inverters , 2009, IEEE Transactions on Industry Applications.

[20]  Yun Wei Li,et al.  A Flexible Harmonic Control Approach Through Voltage-Controlled DG–Grid Interfacing Converters , 2012, IEEE Transactions on Industrial Electronics.

[21]  G. Joos,et al.  Current source converter on-line pattern generator switching frequency minimization , 1994, Proceedings of 1994 IEEE Industry Applications Society Annual Meeting.

[22]  Yun Wei Li,et al.  Input resonance investigation and LC filter design for PWM Current Source Rectifiers , 2010, 2010 IEEE Energy Conversion Congress and Exposition.

[23]  A.M. Hava,et al.  Performance Analysis of Reduced Common-Mode Voltage PWM Methods and Comparison With Standard PWM Methods for Three-Phase Voltage-Source Inverters , 2009, IEEE Transactions on Power Electronics.

[24]  Thomas A. Lipo,et al.  Circulating type motor bearing current in inverter drives , 1998 .

[25]  J. Erdman,et al.  Effect of PWM inverters on AC motor bearing currents and shaft voltages , 1995, Proceedings of 1995 IEEE Applied Power Electronics Conference and Exposition - APEC'95.

[26]  Bin Wu,et al.  Common-Mode Voltage Reduction Methods for Current-Source Converters in Medium-Voltage Drives , 2013, IEEE Transactions on Power Electronics.

[27]  Chung-Hsiao E. Rd,et al.  New Random Technique of Inverter Control for Common Mode Voltage Reduction of Inverter-Fed Induction Motor Drives , 1999 .

[28]  Bin Wu,et al.  An Active Damping Method Using Inductor-Current Feedback Control for High-Power PWM Current-Source Rectifier , 2011, IEEE Transactions on Power Electronics.

[29]  E. Ün,et al.  Performance Characteristics of the Reduced Common Mode Voltage Near State PWM Method , 2009 .