scholarly journals Design and Development of Microcontroller Based Multilevel Inverter

2019 ◽  
Vol 8 (10) ◽  
pp. 1375-1378
Keyword(s):  
Solar Wind ◽  
Wind Power ◽  
Output Voltage ◽  
Multilevel Inverter ◽  
Energy Sources ◽  
Power Demand ◽  
Output Level ◽  
Multi Level ◽  
Day By Day

Now a day mostly we produce power from non conventional energy sources and power hassle increases day by day. To diminish this power demand we need to emphasize power infusion methods. Multi-level inverter is accommodating to infuse power from distinct renewable sources like solar, wind-power. It generates the alternating output level of voltage from different DC level sources. This inverter uses ‘m’ H-bridges and several DC sources to obtain (2m+1) level of output voltage. This paper focuses on improvement of quality of desired output voltage waveforms with less number of switching devices.

scholarly journals Enhancement of Power Quality for 15 Level Inverter using Phase Disposition-PWM Technique

2020 ◽  
Vol 6 (12) ◽  
pp. 1-6
Author(s):  
Richa Gupta
Keyword(s):  
Power Quality ◽  
Output Voltage ◽  
Harmonic Distortion ◽  
Industrial Applications ◽  
Multilevel Inverter ◽  
Half Wave ◽  
Wave Symmetry ◽  
Even Order ◽  
Multi Level

With consideration of use of solar, wind and other renewable energy source for industrial applications like electric vehicle drive, train traction and FACTS integration, which demand voltage levels in the range of kilo volts with high power quality, to achieve this high voltage level and high quality of power, a cascaded H-bridge multilevel inverter based topology capable of operating with low harmonic distortion is proposed in the paper. In order to attain low total harmonic distortion (THD), use of phase disposition-PWM technique is proposed in the paper. Giving due attention to both switch count and low THD, the output voltage levels of the multi-level inverter are set at 15 levels. Due to half wave symmetry the even order harmonics for proposed system become zero and the lower order harmonics reduces which is shown in tabular from. Due to reduced switch count and low THD the overall system become more efficient and effective. The effectiveness of the proposed control strategy has been verified using MATLAB simulations. Simulation is done for both symmetrical as well as asymmetrical multilevel inverter topology. It is observed that quality of the output voltage waveforms of the multi-level inverter (MLI) is as per the IEEE std 519 specifications. For symmetrical reduced switch fifteen level inverter the THD is 4.42% and for asymmetrical topology THD is 4.59% for the output voltage waveform.

scholarly journals Non-conventional Cascade Multilevel Inverter with Lower Number of Switches by Using Multilevel PWM

2021 ◽  
Vol 17 (1) ◽  
pp. 1-13
Author(s):  
Adala Abdali ◽  
Ali Abdulabbas ◽  
Habeeb Nekad
Keyword(s):  
High Voltage ◽  
High Power ◽  
Power Loss ◽  
Output Voltage ◽  
Lower Number ◽  
Multilevel Inverter ◽  
Three Phase ◽  
Multi Level ◽  
Simulation Results ◽  
Circuit Configuration

The multilevel inverter is attracting the specialist in medium and high voltage applications, among its types, the cascade H bridge Multi-Level Inverter (MLI), commonly used for high power and high voltage applications. The main advantage of the conventional cascade (MLI) is generated a large number of output voltage levels but it demands a large number of components that produce complexity in the control circuit, and high cost. Along these lines, this paper presents a brief about the non-conventional cascade multilevel topologies that can produce a high number of output voltage levels with the least components. The non-conventional cascade (MLI) in this paper was built to reduce the number of switches, simplify the circuit configuration, uncomplicated control, and minimize the system cost. Besides, it reduces THD and increases efficiency. Two topologies of non-conventional cascade MLI three phase, the Nine level and Seventeen level are presented. The PWM technique is used to control the switches. The simulation results show a better performance for both topologies. THD, the power loss and the efficiency of the two topologies are calculated and drawn to the different values of the Modulation index (ma).

scholarly journals The multilevel inverter with clamped-diode

2019 ◽  
Vol 14 (3) ◽  
pp. 1189
Author(s):  
Trong-Thang Nguyen
Keyword(s):  
Numerical Simulation ◽  
Circuit Design ◽  
Output Voltage ◽  
Harmonic Distortion ◽  
Control Circuit ◽  
Multilevel Inverter ◽  
Power Circuit ◽  
Advantages And Disadvantages ◽  
Multi Level ◽  
And Control

<p>In this study, the author analyzes the advantages and disadvantages of multi-level inverter compared to the traditional two-level inverter and then chose the suitable inverter. Specifically, the author analyzes and designs the three-level inverter, including the power circuit design and control circuit design. All designs are verified through the numerical simulation on Matlab. The results show that even though the three-level inverter has a low number of switches (only 12 switches), but the quality is very good: the total harmonic distortion is small; the output voltage always follows the reference voltage.</p>

scholarly journals MATHEMATICAL ALGORITHM OF FUZZY LOGIC CONTROLLER FOR MULTILEVEL INVERTER CREATING VERTICAL DIVIDED VOLTAGE

2019 ◽  
Vol 59 (1) ◽  
pp. 1-11 ◽  
Author(s):  
Erol Can
Keyword(s):  
Mathematical Model ◽  
Fuzzy Logic ◽  
Fuzzy Logic Control ◽  
Pid Controller ◽  
Output Voltage ◽  
Fuzzy Logic Controller ◽  
Boost Converter ◽  
Multilevel Inverter ◽  
Logic Control ◽  
Multi Level

A 9-level inverter with a boost converter has been controlled with a fuzzy logic controller and a PID controller for regulating output voltage applications on resistive (R) and inductive (L), capacitance (C). The mathematical model of this system is created according to the fuzzy logic controlling new high multilevel inverter with a boost converter. The DC-DC boost converter and the multi-level inverter are designed and explained, when creating a mathematical model after a linear pulse width modulation (LPWM), it is preferred to operate the boost multi-level inverter. The fuzzy logic control and the PID control are used to manage the LPWM that allows the switches to operate. The fuzzy logic algorithm is presented by giving necessary mathematical equations that have second-degree differential equations for the fuzzy logic controller. After that, the fuzzy logic controller is set up in the 9-level inverter. The proposed model runs on different membership positions of the triangles at the fuzzy logic controller after testing the PID controller. After the output voltage of the converter, the output voltage of the inverter and the output current of the inverter are observed at the MATLAB SIMULINK, the obtained results are analysed and compared. The results show the demanded performance of the inverter and approve the contribution of the fuzzy logic control on multi-level inverter circuits.

Performance Evaluation of 3Φ Asymmetrical MLI with Reduced Switch Count

2016 ◽  
Vol 3 (3) ◽  
pp. 671
Author(s):  
Chinnapettai Ramalingam Balamurugan ◽  
S.P. Natarajan ◽  
T.S. Anandhi
Keyword(s):  
Performance Evaluation ◽  
High Power ◽  
Output Voltage ◽  
Multilevel Inverter ◽  
Matlab Simulink ◽  
Ac Drives ◽  
Three Phase ◽  
Multi Level ◽  
The Cost ◽  
Switching Strategies

The multi level inverter system is habitually exploited in AC drives, when both reduced harmonic contents and high power are required. In this paper, a new topology for three phase asymmetrical multilevel inverter employing reduced number of switches is introduced. With less number of switches, the cost, space and weight of the circuit are automatically reduced. This paper discusses the new topology, the switching strategies and the operational principles of the chosen inverter. Simulation is carried out using MATLAB-SIMULINK. Various conventional PWM techniques that are appropriate to the chosen circuit such as PDPWM, PODPWM, APODPWM, VFPWM and COPWM are employed in this work. COPWM technique affords the less THD value and also affords a higher fundamental RMS output voltage.

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 An enhanced 17-level hybridized multilevel inverter with stair case modulation

2020 ◽  
Vol 11 (4) ◽  
pp. 1872
Author(s):  
Hemalatha Javvaji ◽  
Basavaraja Banakara
Keyword(s):  
Renewable Energy ◽  
Solid State ◽  
Power Consumption ◽  
Output Voltage ◽  
Multilevel Inverter ◽  
Energy Applications ◽  
Multi Level ◽  
Simulation Results ◽  
And Performance ◽  
Cascaded Multilevel Inverter

This paper proposes a Hybridized Symmetric Cascaded Multilevel Inverter for voltage levels ranging from 5 levels to 17 levels. The proposed Multi Level Inverter (MLI) topology is built using a modified H-bridge inverter that results in an increased output voltage levels with a smaller number of solid-state switches. This technique enhances the h-bridge configuration from three level to five level by means of a bi-directional switch at source. Gating pulses of hybridized symmetric MLI are generated through staircase modulation. The operation and performance of the proposed topology is tested for different output voltage levels, simulation results prove that the proposed technique results in less THD at all levels with lesser power consumption and are easily applicable for renewable energy applications.

An Optimization Harmonic Elimination Control Technique for Cascade Multilevel Inverter

2012 ◽  
Vol 229-231 ◽  
pp. 2380-2384
Author(s):  
Bing Yi Wang ◽  
Shuang Zhai ◽  
Xiao Qian Zhu
Keyword(s):  
Output Voltage ◽  
Harmonic Distortion ◽  
Multilevel Inverter ◽  
Total Harmonic Distortion ◽  
Control Technique ◽  
Harmonic Elimination ◽  
Simulation And Experiment ◽  
Distortion Rate ◽  
Frequency Harmonic

In order to improve the quality of cascade multilevel inverter’s output voltage, this paper introduces an optimization harmonic elimination control technique. The harmonic of cascade multilevel inverter is controlled by the switch angels of inverter units. Through this technique, switch angels eliminate the low and middle frequency harmonic compositions and at the same time make total harmonic distortion rate of cascade multilevel inverter low are found. The correctness and accuracy of optimization harmonic elimination control technique are validated by simulation and experiment model.

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