A Non-Isolated High-Gain DC to DC Converter Connected Multi-level Inverter for Photo-Voltaic Energy Sources

ABSTRACT The high-gain DC to DC Converter widely used in industrial and power system applications. In particular, the non-isolated converters are highly prepared due to their size and cost. The application such as photo-voltaic (PV) and wind power system, the combination of non-isolated converter and inverter are used. These converters are selected for the specific applications depend on the circuit complexity, reliability and cost. With respect to PV applications, the simple boost wider range voltage gain DC to DC converter is better choice to meet the DC-link voltage of the PV inverters. Comparing with conventional inverters, multi-level inverters (MLIs) are the worthy option, as it has a superiority to suppress the voltage and current harmonics. Even though the reduced switch MLIs are well-established for medium voltage PV system, still the challenges beside to improve voltage harmonic, voltage enhancement, increasing the inverter efficiency etc. Hence, in this paper proposes the PV Power system with single switch non-isolated high-gain DC to DC converter and reduced switch seven-level MLI inverter. The proposed converter is developed with the mixtures of boost and cuk converter; hence it has wider range of control with good efficiency. The experimental study of 400W PV system is established. The experimental results are conformed the theoretical investigation.

[1]  Ali I. Maswood,et al.  Evaluation of Level-Shifted and Phase-Shifted PWM Schemes for Seven Level Single-Phase Packed U Cell Inverter , 2018, CPSS Transactions on Power Electronics and Applications.

[2]  C. Bharatiraja,et al.  Improved SVPWM vector selection approaches in OVM region to reduce common-mode voltage for three-level neutral point clamped inverter , 2016 .

[3]  Adil Sarwar,et al.  Simulation and Analysis of a Multilevel Converter Topology for Solar PV Based Grid Connected Inverter , 2011 .

[5]  Wuhua Li,et al.  An Interleaved Winding-Coupled Boost Converter With Passive Lossless Clamp Circuits , 2007, IEEE Transactions on Power Electronics.

[6]  Fred C. Lee,et al.  High-efficiency, high step-up DC-DC converters , 2003 .

[7]  C. Bharatiraja,et al.  A Three-Phase Transformerless T-Type- NPC-MLI for Grid Connected PV Systems with Common-Mode Leakage Current Mitigation , 2019, Energies.

[8]  Frede Blaabjerg,et al.  Investigation and Comparative Analysis of Advanced PWM Techniques for Three-Phase Three-Level NPC-MLI Drives , 2018 .

[9]  Yusuff Adedayo,et al.  A Simple Multilevel Space Vector Modulation Technique and MATLAB System Generator Built FPGA Implementation for Three-Level Neutral-Point Clamped Inverter , 2019 .

[10]  Y. Lembeye,et al.  Optimization and Design of a Cascaded DC/DC Converter Devoted to Grid-Connected Photovoltaic Systems , 2012, IEEE Transactions on Power Electronics.

[11]  S. Jeevananthan,et al.  FPGA based practical implementation of NPC-MLI with SVPWM for an autonomous operation PV system with capacitor balancing , 2014 .

[12]  E. El-Saadany,et al.  Maximum power point tracking for Photovoltaic systems using fuzzy logic and artificial neural networks , 2011, 2011 IEEE Power and Energy Society General Meeting.

[13]  C. Bharatiraja,et al.  Fault Tolerant Operation of Parallel-Connected 3L-Neutral-Point Clamped Back-to-Back Converters Serving to Large Hydro-Generating Units , 2018, IEEE Transactions on Industry Applications.

[14]  Yusuff Adedayo,et al.  A Modified High Voltage Gain Quasi-Impedance Source Coupled Inductor Multilevel Inverter for Photovoltaic Application , 2020 .

[15]  Bharatiraja Chokkalingam,et al.  Design of a Novel Boomerang Trajectory for Sliding Mode Controller , 2020 .

[16]  Chih-Chiang Hua,et al.  A novel dc voltage charge balance control for cascaded inverters , 2009 .

[17]  C. Bharatiraja,et al.  A low cost single phase grid connected reduced switch PV inverter based on Time Frame Switching Scheme , 2016 .

[18]  R. Grino,et al.  Output Voltage Regulation of a High-Efficiency High Step-Up DC-DC Power Converter , 2007, 2007 IEEE International Symposium on Industrial Electronics.

[19]  C. Bharatiraja,et al.  Analysis, Design and Investigation on a New Single-Phase Switched Quasi Z-Source Inverter for Photovoltaic Application , 2017 .

[20]  Frede Blaabjerg,et al.  Cost‐efficient nonisolated three‐port DC‐DC converter for EV/HEV applications with energy storage , 2019, International Transactions on Electrical Energy Systems.

[21]  Sanjeevikumar Padmanaban,et al.  Photovoltaic Integrated Hybrid Microgrid Structured Electric Vehicle Charging Station and Its Energy Management Approach , 2019, Energies.

[22]  Vigna K. Ramachandaramurthy,et al.  Investigations of multi-carrier pulse width modulation schemes for diode free neutral point clamped multilevel inverters , 2019 .

[23]  Padmanaban Sanjeevikumar,et al.  A Hybridization of Cuk and Boost Converter Using Single Switch with Higher Voltage Gain Compatibility , 2020, Energies.

[24]  S. Jeevananthan,et al.  Vector selection approach-based hexagonal hysteresis space vector current controller for a three phase diode clamped MLI with capacitor voltage balancing , 2016 .

[25]  Ali I. Maswood,et al.  Design and implementation of fourth arm for elimination of bearing current in NPC-MLI fed Induction motor drive , 2016, 2016 IEEE International Conference on Power Electronics, Drives and Energy Systems (PEDES).

[26]  P.L. Chapman,et al.  Comparison of Photovoltaic Array Maximum Power Point Tracking Techniques , 2007, IEEE Transactions on Energy Conversion.