A Simple Differential Mode EMI Suppressor for the $LLCL$-Filter-Based Single-Phase Grid-Tied Transformerless Inverter

The single-phase power converter topologies evolving of photovoltaic applications are still including passive filters, like the LCLor LLCL-filter. Compared with the LCL-filter, the total inductance of the LLCL-filter can be reduced a lot. However, due to the resonant inductor in series with the bypass capacitor, the differential mode (DM) electromagnetic interference (EMI) noise attenuation of an LLCL-filter-based grid-tied inverter declines. Conventionally, a capacitor was inserted in parallel with the LC resonant circuit branch of the LLCL-filter to suppress the DM EMI noise. In order to achieve a small value of capacitor as well as to minimize the additional reactive power, a novel simple DM EMI suppressor for the LLCL-filter-based system is proposed. The characters of two kinds of DM EMI suppressor are analyzed and compared in detail. Simulations and experiments on a 0.5-kW 110-V/50-Hz single-phase grid-tied inverter prototype are accomplished to confirm the analysis.

[1]  Sangshin Kwak,et al.  Model Predictive Control Methods to Reduce Common-Mode Voltage for Three-Phase Voltage Source Inverters , 2015, IEEE Transactions on Power Electronics.

[2]  Antoni Arias,et al.  Reduction of Output Common Mode Voltage Using a Novel SVM Implementation in Matrix Converters for Improved Motor Lifetime , 2014, IEEE Transactions on Industrial Electronics.

[3]  D. Boroyevich,et al.  Leakage Current Reduction in a Single-Phase Bidirectional AC–DC Full-Bridge Inverter , 2012, IEEE Transactions on Power Electronics.

[4]  S. Srinivas,et al.  Bearing Currents and Shaft Voltage Reduction in Dual-Inverter-Fed Open-End Winding Induction Motor With Reduced CMV PWM Methods , 2015, IEEE Transactions on Industrial Electronics.

[5]  Ahmet M. Hava,et al.  Common-Mode Voltage Reduction Pulsewidth Modulation Techniques for Three-Phase Grid-Connected Converters , 2013, IEEE Transactions on Power Electronics.

[6]  Pawan Garg.  A Fault Tolerant 3-Phase Adjustable Speed Drive Topology with Common Mode Voltage Suppression , 2014 .

[7]  Rae-Young Kim,et al.  Suppression of Common-Mode Voltage Using a Multicentral Photovoltaic Inverter Topology With Synchronized PWM , 2014, IEEE Transactions on Industrial Electronics.

[8]  Ned Mohan,et al.  Carrier-Based Implementation of SVPWM for Dual Two-Level VSI and Dual Matrix Converter With Zero Common-Mode Voltage , 2015, IEEE Transactions on Power Electronics.

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

[10]  Frede Blaabjerg,et al.  A New $LCL$-Filter With In-Series Parallel Resonant Circuit for Single-Phase Grid-Tied Inverter , 2014, IEEE Transactions on Industrial Electronics.

[11]  Giampaolo Buticchi,et al.  A Nine-Level Grid-Connected Converter Topology for Single-Phase Transformerless PV Systems , 2014, IEEE Transactions on Industrial Electronics.

[12]  F. Blaabjerg,et al.  Review and Comparison of Step-Up Transformerless Topologies for Photovoltaic AC-Module Application , 2013, IEEE Transactions on Power Electronics.

[13]  Remus Teodorescu,et al.  A New High-Efficiency Single-Phase Transformerless PV Inverter Topology , 2011, IEEE Transactions on Industrial Electronics.

[14]  Jian Sun,et al.  Conducted EMI modeling and mitigation for power converters and motor drives , 2012, 2012 ESA Workshop on Aerospace EMC.

[15]  X. Margueron,et al.  High-Frequency Model of the Coupled Inductors Used in EMI Filters , 2012, IEEE Transactions on Power Electronics.

[16]  Xiaomeng Cheng,et al.  A Three-Phase Current Reconstruction Technique Using Single DC Current Sensor Based on TSPWM , 2014, IEEE Transactions on Power Electronics.

[17]  Kai Sun,et al.  A Family of Neutral Point Clamped Full-Bridge Topologies for Transformerless Photovoltaic Grid-Tied Inverters , 2013, IEEE Transactions on Power Electronics.

[18]  Wooi Ping Hew,et al.  Modulation Techniques to Reduce Leakage Current in Three-Phase Transformerless H7 Photovoltaic Inverter , 2015, IEEE Transactions on Industrial Electronics.

[19]  S. Morimoto,et al.  Study of the Further Reduction of Shaft Voltage of Brushless DC Motor With Insulated Rotor Driven by PWM Inverter , 2013, IEEE Transactions on Industry Applications.

[20]  Andreas Binder,et al.  High-Frequency Induction Machine Modeling for Common Mode Current and Bearing Voltage Calculation , 2014, IEEE Transactions on Industry Applications.

[21]  Jianhua Wang,et al.  High-Efficiency Single-Phase Transformerless PV H6 Inverter With Hybrid Modulation Method , 2013, IEEE Transactions on Industrial Electronics.

[22]  Donald Grahame Holmes,et al.  A Novel Three-Level Hysteresis Current Regulation Strategy for Three-Phase Three-Level Inverters , 2014, IEEE Transactions on Power Electronics.

[23]  Xiaoqiang Guo,et al.  Single-Carrier Modulation for Neutral-Point-Clamped Inverters in Three-Phase Transformerless Photovoltaic Systems , 2013, IEEE Transactions on Power Electronics.

[24]  Frede Blaabjerg,et al.  A Modified LLCL Filter With the Reduced Conducted EMI Noise , 2013, IEEE Transactions on Power Electronics.

[25]  Federico Barrero,et al.  Space-Vector PWM With Reduced Common-Mode Voltage for Five-Phase Induction Motor Drives , 2013, IEEE Transactions on Industrial Electronics.

[26]  Abdolreza Sheikholeslami,et al.  Predictive modulation schemes to reduce common-mode voltage in three-phase inverters-fed AC drive systems , 2014 .

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

[28]  Akshay Kumar Rathore,et al.  Current-Fed Interleaved Phase-Modulated Single-Phase Unfolding Inverter: Analysis, Design, and Experimental Results , 2014, IEEE Transactions on Industrial Electronics.

[29]  Younghoon Cho,et al.  Dual-Mode Double-Carrier-Based Sinusoidal Pulse Width Modulation Inverter With Adaptive Smooth Transition Control Between Modes , 2013, IEEE Transactions on Industrial Electronics.

[30]  Huafeng Xiao,et al.  Optimised full-bridge transformerless photovoltaic grid-connected inverter with low conduction loss and low leakage current , 2014 .

[31]  P. Sanchis,et al.  Transformerless Inverter for Single-Phase Photovoltaic Systems , 2007, IEEE Transactions on Power Electronics.

[32]  Li Zhang,et al.  A Quasi-Unipolar SPWM Full-Bridge Transformerless PV Grid-Connected Inverter with Constant Common-Mode Voltage , 2015, IEEE Transactions on Power Electronics.

[33]  Jun Yang,et al.  An LTCL Filter for Three-Phase Grid-Connected Converters , 2014, IEEE Transactions on Power Electronics.

[34]  Ranjan Kumar Behera,et al.  Common-Mode Voltage and Vibration Mitigation of a Five-Phase Three-Level NPC Inverter-Fed Induction Motor Drive System , 2015, IEEE Journal of Emerging and Selected Topics in Power Electronics.

[35]  F. Blaabjerg,et al.  An LLCL Power Filter for Single-Phase Grid-Tied Inverter , 2012, IEEE Transactions on Power Electronics.

[36]  Ke Lan,et al.  Zero-Voltage-Transition Full-Bridge Topologies for Transformerless Photovoltaic Grid-Connected Inverter , 2014, IEEE Transactions on Industrial Electronics.

[37]  Giampaolo Buticchi,et al.  Active Common-Mode Filter for Ground Leakage Current Reduction in Grid-Connected PV Converters Operating With Arbitrary Power Factor , 2014, IEEE Transactions on Industrial Electronics.

[38]  G. Narayanan,et al.  Common-Mode Injection PWM for Parallel Converters , 2015, IEEE Transactions on Industrial Electronics.

[39]  Mustafa Hadi Sarul,et al.  A novel reduced leakage current modulation technique for Z-source inverter used in photovoltaic systems , 2014 .

[40]  June-Seok Lee,et al.  New Modulation Techniques for a Leakage Current Reduction and a Neutral-Point Voltage Balance in Transformerless Photovoltaic Systems Using a Three-Level Inverter , 2014, IEEE Transactions on Power Electronics.

[41]  Akshay Kumar Rathore,et al.  New Optimal Pulsewidth Modulation for Single DC-Link Dual-Inverter Fed Open-End Stator Winding Induction Motor Drive , 2015, IEEE Transactions on Power Electronics.