DC-Link Capacitor Second Carrier Band Switching Harmonic Current Reduction in Two-Level Back-to-Back Converters

This paper proposes an active switching harmonic current reduction method within the dc-link capacitor of two-level, three-phase, back-to-back converters. This method is based on the derived analytical solution for switching harmonic currents in the dc-link. It is shown that by controlling the pulse width modulation carrier waveform's phase angles, the harmonics in the second carrier band of the rectifier and the inverter can be synchronized such that cancellation occurs in the dc-link capacitor. This synchronization is provided by harmonic phase feedback control. The feasibility of the proposed approach has been verified experimentally and results are presented in this paper.

[1]  M. Forster,et al.  Reduction of DC bus capacitor ripple current with PAM/PWM converter , 2002, Conference Record of the 2002 IEEE Industry Applications Conference. 37th IAS Annual Meeting (Cat. No.02CH37344).

[2]  José R. Espinoza,et al.  PWM regenerative rectifiers: state of the art , 2005, IEEE Transactions on Industrial Electronics.

[3]  Johann W. Kolar,et al.  Analytical calculation of the RMS current stress on the DC-link capacitor of voltage-PWM converter systems , 2006 .

[4]  Hyun-Sam Jung,et al.  Control of Three-Phase Inverter for AC Motor Drive With Small DC-Link Capacitor Fed by Single-Phase AC Source , 2014, IEEE Transactions on Industry Applications.

[5]  Jon Clare,et al.  Doubly fed induction generator using back-to-back PWM converters and its application to variable-speed wind-energy generation , 1996 .

[6]  David W. P. Thomas,et al.  Stability Study for a Hybrid AC-DC More-Electric Aircraft Power System , 2012, IEEE Transactions on Aerospace and Electronic Systems.

[7]  Jinhwan Jung,et al.  A feedback linearizing control scheme for a PWM converter-inverter having a very small DC-link capacitor , 1998, Conference Record of 1998 IEEE Industry Applications Conference. Thirty-Third IAS Annual Meeting (Cat. No.98CH36242).

[8]  F. Blaabjerg,et al.  Power electronics as efficient interface in dispersed power generation systems , 2004, IEEE Transactions on Power Electronics.

[9]  Boon Teck Ooi,et al.  Naturally sampled triangle carrier PWM bandwidth limit and output spectrum , 2005, IEEE Transactions on Power Electronics.

[10]  Gui-Jia Su,et al.  A segmented traction drive system with a small dc bus capacitor , 2012, 2012 IEEE Energy Conversion Congress and Exposition (ECCE).

[11]  Jianfeng Liu,et al.  A carrier modulation method for minimizing the dc link capacitor current ripple of the HEV DC-DC converter and inverter systems , 2011, 2011 Twenty-Sixth Annual IEEE Applied Power Electronics Conference and Exposition (APEC).

[12]  Brendan Peter McGrath,et al.  A General Analytical Method for Calculating Inverter DC-Link Current Harmonics , 2008, 2008 IEEE Industry Applications Society Annual Meeting.

[13]  Nicolas Patin,et al.  Extended Double Carrier PWM Strategy Dedicated to RMS Current Reduction in DC Link Capacitors of Three-Phase Inverters , 2014, IEEE Transactions on Power Electronics.

[14]  Stig Munk-Nielsen,et al.  An Active Damping Technique for Small DC-Link Capacitor Based Drive System , 2013, IEEE Transactions on Industrial Informatics.

[15]  Kwanghee Nam,et al.  A DC-link capacitor minimization method through direct capacitor current control , 2006, IEEE Transactions on Industry Applications.

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

[17]  Lei Shen,et al.  Active DC-Link Capacitor Harmonic Current Reduction in Two-Level Back-to-Back Converter , 2016, IEEE Transactions on Power Electronics.