Switched-Capacitor based Quadruple Boost 9-Level Inverter Topology with Multicarrier PWM Technique

This paper presents Switched-Capacitor based Quadruple Boost 9-Level Inverter topology which possesses several advantages over conventional MLI types, SCMLI topologies. The self-voltage balancing capability of switched capacitors which reduces complexity in control is compared with existing SCMLI topology. The simulation study of the SCQB9LI topology is carried out. Switched capacitors are designed for selfvoltage balancing nature. The MLS-PWM strategy is employed for generating gate pulses. The performance of the chosen inverter topology is investigated for different modulation indices and its results are presented. A comparative study with conventional SCMLI topologies proves the effectiveness of SCQB9LI topology.

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Review for "A new quasi‐resonant switched capacitor multilevel inverter with the self‐voltage balancing capability"

10.1002/2050-7038.12478/v3/review2 ◽

2020 ◽

Keyword(s):

The Self ◽

Multilevel Inverter ◽

Switched Capacitor ◽

Voltage Balancing

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Multicarrier PWM Based Control of Modular Multilevel Inverter with Grid Connected Solar PV System

International Journal for Modern Trends in Science and Technology - RTT2020 ◽

10.46501/ijmtst0705011 ◽

2021 ◽

Vol 7 (05) ◽

pp. 72-80

Author(s):

Saminathan S & Dr. Ranjithkumar K

Keyword(s):

Multilevel Inverter ◽

Photovoltaic System ◽

Solar Pv ◽

Pv System ◽

Voltage Balancing ◽

Multilevel Inverters ◽

Solar Pv System ◽

And Performance ◽

Inverter Topology ◽

Multicarrier Pwm

In this work, a new modular multilevel inverter topology is introduced for a single phase grid connected Photovoltaic system. This multilevel inverter use less number of switches to generate seven levels compared to other conventional multilevel inverters. This requires only one isolated dc source to operate. So it is suitable for renewable energy application. This inverter is designed by submodule configuration; each sub module contains two switches and one DC link capacitor. The sub modules will be added to the inverter depending on number of levels. The voltage balancing of DC link capacitor is carried out by Y matrix PWM technique. Because of Y matrix PWM technique, the inverter gets a self capacitor voltage balancing ability. So there is no need of external devices required for balancing the voltage of capacitor. A PLL for grid integration and LCL filter are designed and integrated with this inverter. The simulation of proposed system is carried out by MATLAB/SIMULINK and performance of THD is monitored as per standards

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