Generalized Power Decoupling Control for Single-Phase Differential Inverters With Nonlinear Loads

Differential inverters provide a cost-effective solution to the second-order ripple power issue in single-phase systems. Most existing differential inverter-based power decoupling methods are for linear loads, which may not work well for nonlinear loads. When supplying nonlinear loads, differential inverters may suffer from harmonics at the ac terminal, which may propagate to the dc side and deteriorate the performance of power decoupling. In this paper, the harmonic mitigation is realized by reshaping capacitor voltages, and it is applied to buck-, boost-, and buck–boost-type differential inverters with detailed harmonics compensation capacity analysis. Then, a feedback linearization-based dc current feedback control scheme is proposed to realize the harmonic mitigation; hence, both the dc-side ripple power and the nonlinearity found in differential inverters can be decoupled simultaneously. The proposed control scheme is developed based on a generalized half-bridge model and can be applied to buck-, boost-, or buck–boost-type differential inverters with minor revisions. Experimental results are presented to validate the performance of the proposed control scheme and theoretical analysis.

[1]  Frede Blaabjerg,et al.  A Component-Minimized Single-Phase Active Power Decoupling Circuit With Reduced Current Stress to Semiconductor Switches , 2015, IEEE Transactions on Power Electronics.

[2]  Qing-Chang Zhong,et al.  A Single-Phase Four-Switch Rectifier With Significantly Reduced Capacitance , 2016, IEEE Transactions on Power Electronics.

[3]  Hui Zhao,et al.  Active Power Decoupling for High-Power Single-Phase PWM Rectifiers , 2013, IEEE Transactions on Power Electronics.

[4]  E. Gubia,et al.  Boost DC-AC inverter: a new control strategy , 2005, IEEE Transactions on Power Electronics.

[5]  Frede Blaabjerg,et al.  Proportionalresonant controllers and filters for gridconnected voltagesource converters , 2006 .

[6]  Brad Lehman,et al.  LED lighting flicker and potential health concerns: IEEE standard PAR1789 update , 2010, 2010 IEEE Energy Conversion Congress and Exposition.

[7]  Siyuan Ma,et al.  Waveform control method for mitigating harmonics of inverter systems with nonlinear load , 2015, IECON 2015 - 41st Annual Conference of the IEEE Industrial Electronics Society.

[8]  Ioan Serban.  Power Decoupling Method for Single-Phase H-Bridge Inverters With No Additional Power Electronics , 2015, IEEE Transactions on Industrial Electronics.

[9]  Mei Su,et al.  An Active Power-Decoupling Method for Single-Phase AC–DC Converters , 2014, IEEE Transactions on Industrial Informatics.

[10]  B. Tamyurek.  A High-Performance SPWM Controller for Three-Phase UPS Systems Operating Under Highly Nonlinear Loads , 2013, IEEE Transactions on Power Electronics.

[11]  Montie Alves Vitorino,et al.  Compensation of DC link oscillation in single-phase VSI and CSI converters for photovoltaic grid connection , 2011, 2011 IEEE Energy Conversion Congress and Exposition.

[12]  Frede Blaabjerg,et al.  Highly Reliable Transformerless Photovoltaic Inverters With Leakage Current and Pulsating Power Elimination , 2016, IEEE Transactions on Industrial Electronics.

[13]  Lazhar Ben-Brahim,et al.  Modeling and control for new LLCL filter based grid-tied PV inverters with active power decoupling and active resonance damping capabilities , 2018 .

[14]  Luis Marroyo,et al.  Design and experimental operation of a control strategy for the buck-boost DC-AC Inverter , 2005 .

[15]  Jinwei He,et al.  Selective harmonic compensation using active power filter with enhanced double-loop controller , 2016, 2016 IEEE 8th International Power Electronics and Motion Control Conference (IPEMC-ECCE Asia).

[16]  Dylan Dah-Chuan Lu,et al.  Novel current control of grid-connected boost-inverter with zero steady-state error , 2011, 2011 Twenty-Sixth Annual IEEE Applied Power Electronics Conference and Exposition (APEC).

[17]  Frede Blaabjerg,et al.  Proportional-resonant controllers and filters for grid-connected voltage-source converters , 2006 .

[18]  Frede Blaabjerg,et al.  Power decoupling with autonomous reference generation for single-phase differential inverters , 2015, 2015 17th European Conference on Power Electronics and Applications (EPE'15 ECCE-Europe).

[19]  Ioan Serban,et al.  Single-phase voltage source converter with active power decoupling operating in both grid-connected and island modes , 2015, 2015 IEEE 6th International Symposium on Power Electronics for Distributed Generation Systems (PEDG).

[20]  F. Wang,et al.  A High Power Density Single-Phase PWM Rectifier With Active Ripple Energy Storage , 2010, IEEE Transactions on Power Electronics.

[21]  Yi Tang,et al.  Ripple Current Reduction for Fuel-Cell-Powered Single-Phase Uninterruptible Power Supplies , 2017, IEEE Transactions on Industrial Electronics.

[22]  N.R. Watson,et al.  Implications for Distribution Networks of High Penetration of Compact Fluorescent Lamps , 2009, IEEE Transactions on Power Delivery.

[23]  Ioan Serban.  A novel transistor-less power decoupling solution for single-phase inverters , 2013, IECON 2013 - 39th Annual Conference of the IEEE Industrial Electronics Society.

[24]  F. Peng,et al.  DC Capacitor-Less Inverter for Single-Phase Power Conversion With Minimum Voltage and Current Stress , 2015, IEEE Transactions on Power Electronics.

[25]  Siew-Chong Tan,et al.  Mitigation of Low-Frequency Current Ripple in Fuel-Cell Inverter Systems Through Waveform Control , 2013, IEEE Transactions on Power Electronics.

[26]  Frede Blaabjerg,et al.  Improved Power Decoupling Scheme for a Single-Phase Grid-Connected Differential Inverter With Realistic Mismatch in Storage Capacitances , 2017, IEEE Transactions on Power Electronics.

[27]  F. Blaabjerg,et al.  A review of single-phase grid-connected inverters for photovoltaic modules , 2005, IEEE Transactions on Industry Applications.

[28]  Vassilios G. Agelidis,et al.  An Input Current Feedback Method to Mitigate the DC-Side Low-Frequency Ripple Current in a Single-Phase Boost Inverter , 2016, IEEE Transactions on Power Electronics.

[29]  Jun-Ichi Itoh,et al.  A Novel Single-Phase Buck PFC AC–DC Converter With Power Decoupling Capability Using an Active Buffer , 2014, IEEE Transactions on Industry Applications.

[30]  V. Karthikeyan,et al.  A Power Decoupling Method Based on Four Switch Three-Port DC/DC/AC Converter in DC Microgrid , 2016 .

[31]  Siew-Chong Tan,et al.  Direct AC/DC Rectifier With Mitigated Low-Frequency Ripple Through Inductor-Current Waveform Control , 2015, IEEE Transactions on Power Electronics.

[32]  Frede Blaabjerg,et al.  A Dual Voltage Control Strategy for Single-Phase PWM Converters With Power Decoupling Function , 2014, IEEE Transactions on Power Electronics.

[33]  Haibing Hu,et al.  A simple repetitive controller embedded in PI-based UPS for reducing Total Harmonic Distortion with nonlinear loads , 2006 .

[34]  Vassilios G. Agelidis,et al.  A Rule-Based Controller to Mitigate DC-Side Second-Order Harmonic Current in a Single-Phase Boost Inverter , 2016, IEEE Transactions on Power Electronics.

[35]  Baoming Ge,et al.  Capacitance, dc Voltage Utilizaton, and Current Stress: Comparison of Double-Line Frequency Ripple Power Decoupling for Single-Phase Systems , 2017, IEEE Industrial Electronics Magazine.