Virtual impedance based selective harmonic compensation (VI-SHC) PWM for current source rectifiers

To mitigate the line current harmonics of a high power current source rectifier (CSR) system, the selective harmonic elimination (SHE) scheme is frequently used due to its low switching frequency and superior harmonic performance. However, the SHE scheme only focuses on the harmonics generated by the converter itself, it cannot cope with the line current harmonics caused by the background grid voltage harmonics. In this paper, a selective harmonic compensation scheme using the virtual impedance concept (VI-SHC) is presented. This method compensates for the pre-existing grid background harmonics using only the line current measurement, and provides superior line current harmonic performance. This PWM control scheme has been verified by both simulations and real-time experiments on a 10kVA/208V CSR prototype.

[1]  Yun Wei Li,et al.  Analysis, Design, and Implementation of Virtual Impedance for Power Electronics Interfaced Distributed Generation , 2011, IEEE Transactions on Industry Applications.

[2]  Paresh C. Sen,et al.  Optimal Pulsewidth Modulation for Current Source Inverters , 1986, IEEE Transactions on Industry Applications.

[3]  Yun Wei Li,et al.  Generalized Closed-Loop Control Schemes with Embedded Virtual Impedances for Voltage Source Converters with LC or LCL Filters , 2012, IEEE Transactions on Power Electronics.

[4]  C. Sharmeela,et al.  Line harmonics reduction using neural based controller for shunt active filters , 2003, TENCON 2003. Conference on Convergent Technologies for Asia-Pacific Region.

[5]  M. Kazerani,et al.  Artificial intelligent controller for current source converter-based modular active power filters , 2004, IEEE Transactions on Power Delivery.

[6]  R. Lyons,et al.  An update to the sliding DFT , 2004, IEEE Signal Process. Mag..

[7]  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.

[8]  J. C. Wiseman,et al.  Active damping control of a high power PWM current source rectifier for line current THD reduction , 2004, PESC 2004.

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

[10]  Timothy C. Green,et al.  Harmonic mitigation throughout a distribution system: a distributed-generator-based solution , 2006 .

[11]  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.

[12]  S. Taib,et al.  An analysis and design of a star delta transformer in series with active power filter for current harmonics reduction , 2004, PECon 2004. Proceedings. National Power and Energy Conference, 2004..

[13]  E. Jacobsen,et al.  The sliding DFT , 2003, IEEE Signal Process. Mag..

[14]  V. Agelidis,et al.  On Abolishing Symmetry Requirements in the Formulation of a Five-Level Selective Harmonic Elimination Pulse-Width Modulation Technique , 2006, IEEE Transactions on Power Electronics.

[15]  Yun Wei Li,et al.  An Accurate Power Control Strategy for Power-Electronics-Interfaced Distributed Generation Units Operating in a Low-Voltage Multibus Microgrid , 2009, IEEE Transactions on Power Electronics.

[16]  Bin Wu,et al.  A Generalized Formulation of Quarter-Wave Symmetry SHE-PWM Problems for Multilevel Inverters , 2009, IEEE Transactions on Power Electronics.

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

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

[19]  Donald Grahame Holmes,et al.  Harmonic current reduction in three-phase bridge-rectifier circuits using controlled current injection , 1997, IEEE Trans. Ind. Electron..

[20]  Ye Zhang,et al.  Selective Harmonic Compensation (SHC) PWM for Grid-Interfacing High-Power Converters , 2014 .

[21]  Maurizio Cirrincione,et al.  A Single-Phase DG Generation Unit with Shunt Active Power Filter Capability by Adaptive Neural Filtering , 2008, IECON 2006 - 32nd Annual Conference on IEEE Industrial Electronics.

[22]  Yukihiko Sato,et al.  A current-type PWM rectifier with active damping function , 1995 .

[23]  V.G. Agelidis,et al.  Non-Symmetrical Selective Harmonic Elimination PWM Techniques: The Unipolar Waveform , 2007, 2007 IEEE Power Electronics Specialists Conference.