Multilevel Inverter Research Articles

Enhanced Standalone Photovoltaic System with Novel Multi-Level Inverter and Nonlinear Control for Improved THD and Converter Efficiency

This article presents a control approach for a photovoltaic system connected to an AC load, aiming to optimize the use of energy generated by solar panels to directly power the load, independent of the electricity grid. The studied system is an autonomous photovoltaic energy conversion system without storage. A new topology of multilevel inverter is utilized to take advantage of its simplicity of control and high efficiency. Additionally, to convert DC to AC with reduced harmonic distortion, the inverter employs a 7-level pulse width modulation (LS-PWM) technique, minimizing harmonic distortion and demonstrating reliability. A sliding mode control strategy is applied to the boost converter to achieve stable voltage and frequency, improve the total harmonic distortion (THD), and minimize losses in the power converter. By efficiently managing power flow and maintaining voltage stability, the control system ensures optimal performance of the photovoltaic system connected to the variable load. The proposed approach and the performance of the controlled system are validated through Matlab Simulink simulations.

A 5 Level Multilevel Inverter

Scheduled Inverter could be a kind of unused multilevel inverter topology utilized in HVDC framework and medium voltage applications like acceptance engine drive. Measured Multilevel inverter can work at tall voltages and current with less constant and basic channels, and without expanding the number of switches. This paper basically centers on straight forward topology for measured multilevel inverter in order to decrease the number of switches additionally boost the voltage of the system by utilizing the capacitor, Diode and a switch. And after that utilizing of lesser switches and by employing a capacitor the inverter gets to be the self-balancing inverter. In this we are employing a Battery as a putting away gadget. The complete circuit is carried out/Simulated in a MATLAB.

A Multilevel Inverter with Increased Linear Modulation Range For Electric Transportation Applications

A Multilevel Inverter with Increased Linear Modulation Range For Electric Transportation Applications

Effective DC Link Utilization of Multilevel Dual Inverter With Single Source in the Maximal Distention Mode

Effective DC Link Utilization of Multilevel Dual Inverter With Single Source in the Maximal Distention Mode

Sensorless integral backstepping control of a single-stage photovoltaic system connected to the single-phase grid using a multi-level NPC inverter with an LCL filter

In this paper, the control problem of a single-phase, grid-tied photovoltaic (PV) system consisting of a three-level neutral point clamped (3L-NPC) inverter and an LCL filter is considered. The proposed controller aims at achieving threefold control objectives: (i) guaranteeing the PF correction (PFC) objective by enforcing the current of the grid to track a sinusoidal reference signal in phase with the grid voltage; (ii) controlling the DC bus capacitor voltages to follow a reference value provided by the maximum power point tracking (MPPT) algorithm to achieve the maximum available PV power; (iii) ensuring a balanced power exchange through the regulation of the two input capacitor voltages to the same values. To achieve these aims, a multi-loop nonlinear controller is synthesized, including three control loops, specifically the inner PFC requirement loop designed through the integral backstepping approach, the outer voltage control loop formulated using a filtered proportional integral (PI) regulator, and the power balance loop built up using a PI regulator. The control problem under consideration entails several difficulties as the existence of numerous state variables that are inaccessible to measurements. This challenge is addressed by adding a high-gain observer to estimate the current of the solar panels. The performance of the proposed controller against climate changes is demonstrated via numerical simulations using the MATLAB/Simulink platform.

To Design a Pulse Generator for the Solar Power Multi Level Inverter in Over-Modulation Mode

Over modulation (OM) phenomenon has been investigated through several Pulse Width Modulation (PWM) techniques in the Solar Power Multi Level Inverter. However, due to non- linear characteristics and a severe low harmonics ripple, it has not been used in closed-loop control with small power grid connected solar panel however it is beneficial to work in over modulation region to utilize the maximum DC bus voltage in open loop system.

Switched-Capacitor Multilevel Inverter With Input Source-Load Common Ground for Applications Supplied by Green Energy

Switched-Capacitor Multilevel Inverter With Input Source-Load Common Ground for Applications Supplied by Green Energy

Generalized Switched-Capacitor-Based Hybrid Multilevel Inverter With Reduced Components Count and Inrush Current

Generalized Switched-Capacitor-Based Hybrid Multilevel Inverter With Reduced Components Count and Inrush Current

Fault-Tolerant Analysis Based Performance Assessment of Single-Phase Multilevel Inverter Topologies with Reduced Switch Count

Fault-Tolerant Analysis Based Performance Assessment of Single-Phase Multilevel Inverter Topologies with Reduced Switch Count

A Single DC Source Multilevel Inverter with Extended Linear Modulation Range to the Full Base Speed and Predictive Capacitor Control for Induction Machine Drives

A Single DC Source Multilevel Inverter with Extended Linear Modulation Range to the Full Base Speed and Predictive Capacitor Control for Induction Machine Drives

A Strategy for Neutral Voltage Modulation Ensuring Fault Tolerance in CHB Multilevel Inverters With Reduced CMV and Unbalanced DC Sources

A Strategy for Neutral Voltage Modulation Ensuring Fault Tolerance in CHB Multilevel Inverters With Reduced CMV and Unbalanced DC Sources

Control signal generation for novel nine-level switched capacitor multilevel inverter using analogue circuits

Control signal generation for novel nine-level switched capacitor multilevel inverter using analogue circuits

Model Predictive Control in Multi-Level Inverters Part II: Renewable Energies and Grid Applications

Model Predictive Control in Multi-Level Inverters Part II: Renewable Energies and Grid Applications

Isolation Based Reduced Switch Nine-Level High-Gain Multilevel Inverter

Isolation Based Reduced Switch Nine-Level High-Gain Multilevel Inverter

Modified cascaded multilevel inverter for renewable energy systems with less number of unidirectional switches

Modified cascaded multilevel inverter for renewable energy systems with less number of unidirectional switches

Multilevel Inverters Design, Topologies, and Applications: Research Issues, Current, and Future Directions

Multilevel Inverters Design, Topologies, and Applications: Research Issues, Current, and Future Directions

A new multi-input two-output switched-source multilevel inverter based on harvest of maximum energy for photovoltaic applications

A new multi-input two-output switched-source multilevel inverter based on harvest of maximum energy for photovoltaic applications

Model Predictive Control in Multilevel Inverters Part I: Basic Strategy and Performance Improvement

Model Predictive Control in Multilevel Inverters Part I: Basic Strategy and Performance Improvement

Reliability Analysis Based on Markov Model, Economic Feasibility, and Efficiency Comparison for a Cascaded H-Bridge Multilevel Inverter Capable of Generating 27 Levels

Reliability Analysis Based on Markov Model, Economic Feasibility, and Efficiency Comparison for a Cascaded H-Bridge Multilevel Inverter Capable of Generating 27 Levels

A New Multi-Input Two-Output Switched-Source Multilevel Inverter Based on Harvest of Maximum Energy for photovoltaic Applications

A New Multi-Input Two-Output Switched-Source Multilevel Inverter Based on Harvest of Maximum Energy for photovoltaic Applications