Selective Harmonic Compensation (SHC) PWM for Grid-Interfacing High-Power Converters

Compensating the grid background harmonics in a grid-interfacing converter system, such as a drive system's active-front-end rectifier or a grid-connected inverter in a distributed generation system, is an effective method of reducing line side current harmonics. However, this harmonic compensation is particularly challenging in medium-voltage high-power applications (>1 MVA). This is mainly due to the low-switching frequency operation of high-power converters (300-800 Hz) to maintain low power loss. Therefore, the traditional tasks of active power filters with relatively high-switching frequency cannot be easily realized here. This paper proposes a new pulse width modulation technique, named selective harmonic compensation (SHC), which actively compensates the power system background harmonics, but still operates at very low-switching frequencies. Details of the proposed SHC are presented. An SHC application example on a high-power current-source rectifier is provided in this paper. The simulations and experiments show that the proposed SHC scheme can effectively compensate the system background harmonics and improve the line current harmonic performance.

[1]  Leopoldo García Franquelo,et al.  Selective Harmonic Mitigation Technique for Cascaded H-Bridge Converters With Nonequal DC Link Voltages , 2013, IEEE Transactions on Industrial Electronics.

[2]  V. Agelidis,et al.  On applying a minimization technique to the harmonic elimination PWM control: the bipolar waveform , 2004, IEEE Power Electronics Letters.

[3]  Leon M. Tolbert,et al.  Adaptive Selective Harmonic Minimization Based on ANNs for Cascade Multilevel Inverters With Varying DC Sources , 2013, IEEE Transactions on Industrial Electronics.

[4]  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.

[5]  J.R. Wells,et al.  Selective harmonic control: a general problem formulation and selected solutions , 2005, IEEE Transactions on Power Electronics.

[6]  P.L. Chapman,et al.  Optimal harmonic elimination control , 2004, 2004 IEEE 35th Annual Power Electronics Specialists Conference (IEEE Cat. No.04CH37551).

[7]  Leopoldo García Franquelo,et al.  Selective Harmonic Mitigation Technique for High-Power Converters , 2010, IEEE Transactions on Industrial Electronics.

[8]  Xinbo Ruan,et al.  Solving the SHEPWM Nonlinear Equations for Three-Level Voltage Inverter Based on Computed Initial Values , 2007, APEC 07 - Twenty-Second Annual IEEE Applied Power Electronics Conference and Exposition.

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

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

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

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

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

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

[15]  S. Paramasivam,et al.  Dynamically Reconfigurable PWM Controller for Three-Phase Voltage-Source Inverters , 2011, IEEE Transactions on Power Electronics.

[16]  Sarosh N. Talukdar,et al.  Characterization of Programmed-Waveform Pulsewidth Modulation , 1980, IEEE Transactions on Industry Applications.

[17]  Zhengming Zhao,et al.  Hybrid Selective Harmonic Elimination PWM for Common-Mode Voltage Reduction in Three-Level Neutral-Point-Clamped Inverters for Variable Speed Induction Drives , 2012, IEEE Transactions on Power Electronics.

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

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

[20]  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.

[21]  Shen Wei,et al.  A flexible way to generate PWM-SHE switching patterns using genetic algorithm , 2001, APEC 2001. Sixteenth Annual IEEE Applied Power Electronics Conference and Exposition (Cat. No.01CH37181).

[22]  Zhong Du,et al.  Elimination of harmonics in a multilevel converter using the theory of symmetric polynomials and resultants , 2005, IEEE Transactions on Control Systems Technology.

[23]  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.