DC bus current harmonics of a three-phase PWM inverter with the zero sequence injection

Power electronic converters connected to a dc bus are sources of undesirable harmonics towards the dc side due to an inherent high-frequency switching used for the power processing. Three-phase inverters are widely used in many applications like motor drives and active rectifiers. With a SPWM control the dc bus voltage is not fully utilized, so a zero sequence injection method is commonly used to increase the maximum fundamental voltage output. The inverter dc side current harmonics are investigated for a three-phase SPWM inverter with and without zero sequence injection. The results show that the injection of the third harmonic and Min/Max zero sequence will not increase the dc side harmonics. The RMS value of the inverter dc side current is increased less than 1% when the zero sequence is injected.

[1]  Ali Emadi,et al.  Negative Impedance Stabilizing Pulse Adjustment Control Technique for DC/DC Converters Operating in Discontinuous Conduction Mode and Driving Constant Power Loads , 2007, IEEE Transactions on Vehicular Technology.

[2]  Mats Alaküla,et al.  Grid-Connected Integrated Battery Chargers in Vehicle Applications: Review and New Solution , 2013, IEEE Transactions on Industrial Electronics.

[3]  A.M. Hava,et al.  Scalar PWM implementation methods for three-phase three-wire inverters , 2009, 2009 International Conference on Electrical and Electronics Engineering - ELECO 2009.

[4]  Holmes,et al.  Pulse width modulation for power converters , 2003 .

[5]  T. Lipo,et al.  Dynamic overmodulation characteristics of triangle intersection PWM methods , 1997, IAS '97. Conference Record of the 1997 IEEE Industry Applications Conference Thirty-Second IAS Annual Meeting.

[6]  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.

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

[8]  P. Argo Dahono,et al.  A new approach for harmonic analysis of three-phase current-type PWM converters , 1997, IAS '97. Conference Record of the 1997 IEEE Industry Applications Conference Thirty-Second IAS Annual Meeting.