Multicarrier-SPWM Based Novel 7-Level Inverter Topology with Photovoltaic System

2017 ◽  
Vol 8 (2) ◽  
pp. 826
Author(s):  
R. Palanisamy ◽  
V. Sinmayee ◽  
K. Selvakumar ◽  
K. Vijayakumar
Keyword(s):  
Pulse Width Modulation ◽  
Harmonic Distortion ◽  
Multilevel Inverter ◽  
Photovoltaic System ◽  
Pv System ◽  
Switching Losses ◽  
Common Mode Voltage ◽  
Voltage Stress ◽  
Inverter Topology ◽  
Sinusoidal Pulse Width Modulation

<p>In this paper a novel 5 switch seven level DC-AC inverter is being proposed. The proposed multilevel inverter uses reduced number of switches as compared to the switches used in the conventional multilevel inverter. The inverter has been designed to generate a 7 level AC output using 5 switches. The voltage stress on each of the switches as well as the switching losses is found to be less, minimized common mode voltage (CMV) level and reduced total harmonic distortion. The proposed 7-level inverter topology has four dc sources, which is energized through the PV system. Proposed inverter is controlled with help of multicarrier sinusoidal pulse width modulation (MCSPWM).The simulation and hardware results were verified using matlab simulink and dspic microcontroller respectively.</p>

MSPWM Based Implementation of Novel 5-level Inverter with Photovoltaic System

2017 ◽  
Vol 8 (4) ◽  
pp. 1494
Author(s):  
Palanisamy R ◽  
K. Vijayakumar ◽  
D. Selvabharathi
Keyword(s):  
Output Voltage ◽  
Pulse Width Modulation ◽  
Harmonic Distortion ◽  
Input Voltage ◽  
Photovoltaic System ◽  
Pv System ◽  
Power Semiconductor ◽  
Semiconductor Switches ◽  
Common Mode Voltage ◽  
Sinusoidal Pulse Width Modulation

This paper proposes a novel 5-level dc-ac converter circuit using with 6 power semiconductor switches. The proposed multilevel inverter generates five-level ac output voltage by implementing Multi-carrier sinusoidal pulse width modulation (MSPWM) technique with reduced number of switches. The voltage stress on each switching devices and common mode voltage can be minimized from the suggested system. The designed system gives better controlled output current and improved output voltage with diminished total Harmonic Distortion value. The operating principles of the proposed inverter are discussed. DC Input for the proposed system is obtained from PV System. Finally, an experimental prototype of the proposed system with 12-V input voltage and 20 V /5 W output is implemented along with simulation output of the waveform to the load. The efficiency and the reduction of harmonic content are discussed.

scholarly journals Solar Photovoltaic System-Based Reduced Switch Multilevel Inverter for Improved Power Quality

2022 ◽  
Vol 4 (1) ◽  
pp. 1-13
Author(s):  
Madhu Andela ◽  
Ahmmadhussain Shaik ◽  
Saicharan Beemagoni ◽  
Vishal Kurimilla ◽  
Rajagopal Veramalla ◽  
...  
Keyword(s):  
Output Voltage ◽  
Pulse Width Modulation ◽  
Harmonic Distortion ◽  
Multilevel Inverter ◽  
Photovoltaic System ◽  
Solar Photovoltaic ◽  
Switching Losses ◽  
Minimum Number ◽  
Multi Level ◽  
Solar Photovoltaic System

This paper deals with a reduced switch multi-level inverter for the solar photovoltaic system-based 127-level multi-level inverter. The proposed technique uses the minimum number of switches to achieve the maximum steps in staircase AC output voltage when compared to the flying capacitor multi-level inverter, cascaded type multilevel inverter and diode clamped multi-level inverter. The use of a minimum number of switches decreases the cost of the system. To eliminate the switching losses, in this topology a square wave switch is used instead of pulse width modulation. Thereby the total harmonic distortion (THD) and harmonics have been reduced in the pulsating AC output voltage waveform. The performance of 127-level MLI is compared with 15 level, 31-level and 63-level multilevel inverters. The outcomes of the solar photovoltaic system-based 127-level multi-level inverter have been simulated in a MATLAB R2009b environment.

scholarly journals Design and Simulation of Novel 11-level Inverter Scheme with Reduced Switches

2018 ◽  
Vol 8 (5) ◽  
pp. 3536
Author(s):  
R. Palanisamy ◽  
Gaurav Singh ◽  
Priyanka Das ◽  
D. Selvabharathi ◽  
Sourav Sinha ◽  
...  
Keyword(s):  
Pulse Width ◽  
Output Voltage ◽  
Pulse Width Modulation ◽  
Harmonic Distortion ◽  
Output Current ◽  
Controlled Switching ◽  
Switching Losses ◽  
Voltage Stress ◽  
Sinusoidal Pulse Width Modulation ◽  
Switching Devices

This work recommends the performance of coupled inductor based novel 11-level inverter with reduced number of switches. The inverter which engender the sinusoidal output voltage by the use of split inductor with minimised total harmonic distortion (THD). The voltage stress on each controlled switching devices, capacitor balancing and switching losses can be reduced. The proposed system which gives better controlled output current and improved output voltage with moderate THD value. The switching devices of the system are controlled by using multicarrier sinusoidal pulse width modulation algorithm by comparing the carrier signals with sinusoidal signal. The simulation and experimental results of the proposed 11-level inverter system outputs are established using matlab/Simulink and dsPIC microcontroller respectively.<br /><br />

scholarly journals A novel single-phase PWM asymmetrical multilevel inverter with number of semiconductor switches reduction

2019 ◽  
Vol 10 (3) ◽  
pp. 1133
Author(s):  
S. Kakar ◽  
S. M. Ayob ◽  
N. M. Nordin ◽  
M. S. Arif ◽  
A. Jusoh ◽  
...  
Keyword(s):  
Single Phase ◽  
Pulse Width Modulation ◽  
Multilevel Inverter ◽  
Semiconductor Switches ◽  
Voltage Stress ◽  
Gate Driver ◽  
Inverter Topology ◽  
Sinusoidal Pulse Width Modulation ◽  
Lower Voltage ◽  
Fundamental Module

In this paper, a new asymmetrical multilevel inverter topology (MLI) is proposed with the objectives of using decreased number of semiconductor switches, dc voltage sources, gate driver circuits and dc links. The structure of presented MLI is very simple and modular. The fundamental module of this structure consists of nine semiconductor switches (eight unidirectional and one bidirectional) and four asymmetrical configured DC sources (ratio of 1:2), which can generate 13-level output voltage. To validate the design, a Matlab-Simulink based model is developed. For this paper, a Sinusoidal Pulse Width Modulation (SPWM) is deployed as the switching strategy of the proposed MLI. The circuit model is simulated under pure resistive and inductive loads. It will be shown that the circuit performs well under both loads. Comparison with traditional MLIs and other recently introduced MLIs will be conducted to show the superiority of the proposed MLI in terms of reduced number of devices and lower voltage stress across the switches.

scholarly journals Grid tied PV System using modular multilevel inverter

2019 ◽  
Vol 10 (4) ◽  
pp. 2013
Author(s):  
Sujitha N. ◽  
Partha Sarathi Subudhi ◽  
Krithiga S. ◽  
Angalaeswari S. ◽  
Deepa T. ◽  
...  
Keyword(s):  
Electronic Devices ◽  
Harmonic Distortion ◽  
Multilevel Inverter ◽  
Photovoltaic System ◽  
Basic Unit ◽  
Pv System ◽  
Unit Structure ◽  
Dc Power ◽  
Ac Power ◽  
Inverter Topology

A grid tied photovoltaic system using modular multilevel inverter topology is proposed in this paper. Basic unit structure of modular multilevel inverter used in this system is capable of converting DC power from PV array to AC power for feeding power to the household loads or utility grid. The proposed modular multilevel inverter structure has lesser power electronic devices compared to the existing multilevel inverter topologies. The proposed system generates a nearly sinusoidal signal and achieves better output profile with low total harmonic distortion. Simulation of the proposed system is carried out in MATLAB/Simulink software and the results are presented.

scholarly journals New Pulse Width Modulation Technique to Reduce Losses for Three-Phase Photovoltaic Inverters

2018 ◽  
Vol 2018 ◽  
pp. 1-10 ◽  
Author(s):  
Mohannad Jabbar Mnati ◽  
Dimitar V. Bozalakov ◽  
Alex Van den Bossche
Keyword(s):  
Control Strategy ◽  
Pulse Width Modulation ◽  
Photovoltaic System ◽  
Pv System ◽  
Total Cost ◽  
Switching Losses ◽  
Three Phase ◽  
Operational Lifetime ◽  
Term Energy ◽  
Dc Bus

Nowadays, most three-phase, “off the shelf” inverters use electrolytic capacitors at the DC bus to provide short term energy storage. However, this has a direct impact on inverter lifetime and the total cost of the photovoltaic system. This article proposes a novel control strategy called a 120° bus clamped PWM (120BCM). The 120BCM modulates the DC bus and uses a smaller DC bus capacitor value, which is typical for film capacitors. Hence, the inverter lifetime can be increased up to the operational lifetime of the photovoltaic panels. Thus, the total cost of ownership of the PV system will decrease significantly. Furthermore, the proposed 120BCM control strategy modulates only one phase current at a time by using only one leg to perform the modulation. As a result, switching losses are significantly reduced. The full system setup is designed and presented in this paper with some practical results.

scholarly journals MATLAB/simulink study of multi-level inverter topologies using minimized quantity of switches

2017 ◽  
Vol 7 (1.5) ◽  
pp. 209
Author(s):  
B.Vijaya Krishna ◽  
B. Venkata Prashanth ◽  
P. Sujatha
Keyword(s):  
Harmonic Distortion ◽  
Pulse Generation ◽  
Multilevel Inverter ◽  
Matlab Simulink ◽  
Multilevel Inverters ◽  
Energy Applications ◽  
Electrical Drives ◽  
Switching Losses ◽  
Trigger Circuit ◽  
Inverter Topology

Multilevel Inverters (MLI) have very good features when compared to Inverters. But using more switches in the conventional configuration will reduce its application in a wider range. For that reason a modified 7-level MLI Topology is presented. This new topology consists of less number of switches that can be reduced to the maximum extent and a separate gate trigger circuit. This will reduce the switching losses, reduce the size of the multilevel inverter, and cost of installation. This new topology can be used in Electrical drives and renewable energy applications. Performance of the new MLI is tested via. Total harmonic distortion. This construction structure of this multilevel inverter topology can also be increased for 9-level, 11-level and so on and simulated by the use of MATLAB/SIMULINK. A separate Carrier Based PWM Technique is used for the pulse generation in this configuration.

Simulation and Analysis of Novel Extendable Multilevel Inverter Topology

2019 ◽  
Vol 28 (06) ◽  
pp. 1950089 ◽  
Author(s):  
V. Thiyagarajan ◽  
P. Somasundaram ◽  
K. Ramash Kumar
Keyword(s):  
Single Phase ◽  
Harmonic Distortion ◽  
Multilevel Inverter ◽  
Voltage Waveform ◽  
Dc Voltage ◽  
Switching Losses ◽  
Comparison Results ◽  
Symmetrical Condition ◽  
Gate Driver ◽  
Inverter Topology

Multilevel inverter (MLI) has become more popular in high power, high voltage industries owing to its high quality output voltage waveform. This paper proposes a novel single phase extendable type MLI topology. The term ‘extendable’ is included since the presented topology can be extended with maximum number of dc voltage sources to synthesize larger output levels. This topology can be operated in both symmetrical and asymmetrical conditions. The major advantages of the proposed inverter topology include minimum switching components, reduced gate driver circuits, less harmonic distortion and reduced switching losses. The comparative analysis based on the number of switches, dc voltage sources and conduction switches between the proposed topology and other existing topologies is presented in this paper. The comparison results show that the proposed inverter topology requires fewer components. The performance of the proposed MLI topology has been analyzed in both symmetrical and asymmetrical conditions. The simulation model is developed using MATLAB/SIMULINK software to verify the performance of the proposed inverter topology and also the feasibility of the presented topology during the symmetrical condition has been validated experimentally.

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

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

scholarly journals Design of new structure of multilevel inverter based on modified absolute sinusoidal PWM technique

2021 ◽  
Vol 12 (4) ◽  
pp. 2314
Author(s):  
Asef A. Saleh ◽  
Rakan Khalil Antar ◽  
Harith Ahmed Al-Badrani
Keyword(s):  
Output Voltage ◽  
Pulse Width Modulation ◽  
Harmonic Distortion ◽  
Multilevel Inverter ◽  
Power Circuit ◽  
Zero Level ◽  
Multilevel Inverters ◽  
Simulink Simulation ◽  
High Output Voltage ◽  
Sinusoidal Pulse Width Modulation

The advantage of multilevel inverters is to produce high output voltage values with distortion as minimum as possible. To reduce total harmonic distortion (THD) and get an output voltage with different step levels using less power electronics switching devices, 15-level inverter is designed in this paper. Single-phase 11-switches with zero-level (ZL) and none-zero-level (NZL) inverter based on modified absolute sinusoidal pulse width modulation (MASPWM) technique is designed, modelled and built by MATLAB/Simulink. Simulation results explained that, multilevel inverter with NZL gives distortion percent less than that with ZL voltage. The THD of the inverter output voltage and current of ZL are 4% and 1%, while with NZL is 3.6% and 0.84%, respectively. These results explain the effectiveness of the suggested power circuit and MASPWM controller to get the required voltage with low THD.

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