Power Quality Performance Evaluation of Multilevel Inverter With Reduced Switching Devices and Minimum Standing Voltage

2020 ◽  
Vol 16 (8) ◽  
pp. 5009-5022 ◽  
Author(s):  
Prabhat Ranjan Bana ◽  
Kaibalya Prasad Panda ◽  
Gayadhar Panda
Keyword(s):  
Performance Evaluation ◽  
Power Quality ◽  
Multilevel Inverter ◽  
Quality Performance ◽  
Switching Devices

scholarly journals An Optimized Multilevel Inverter Topology with Symmetrical and Asymmetrical DC Sources for Sustainable Energy Applications

2020 ◽  
Vol 10 (3) ◽  
pp. 5719-5723
Author(s):  
B. M. Manjunatha ◽  
S. Nagaraja Rao ◽  
A. Suresh Kumar ◽  
K. Shaguftha Zabeen ◽  
S. Lakshminarayanan ◽  
...  
Keyword(s):  
Power Quality ◽  
Sustainable Energy ◽  
Multilevel Inverter ◽  
Energy Applications ◽  
Grid Interface ◽  
Linear Load ◽  
Multi Level ◽  
Simulation Results ◽  
Inverter Topology ◽  
Switching Devices

This paper proposes an optimized Multi-Level Inverter (MLI) topology with symmetrical and asymmetrical DC sources for sustainable energy applications. The proposed MLI has optimized components to reduce size, cost, and installation area in comparison with traditional MLIs. It also improves output power quality by reducing harmonics in the stepped output, and hence it can be used for sustainable energy applications with a grid interface. The proposed inverter is equipped with six switching devices, one clamping diode, and two DC sources. It produces a five-level stepped output when using symmetrical DC sources and a seven-level stepped output when using asymmetrical DC sources. In this topology, the six switching devices are divided into two units, namely the level generator and the polarity generator units, the switches used in the level generator are responsible for producing the required number of levels in the form of rectified stepped output and the switches used in the polarity generator are responsible for converting the rectified stepped waveform to stepped AC output. The simulation results verify the operation of the MLI when fed with linear load with symmetrical and asymmetrical DC sources, and the experimental output results are presented for validation.

scholarly journals A New Topology on Twenty one level Inverter with Reduced Number of Switches

2019 ◽  
Vol 8 (2) ◽  
pp. 1230-1233
Keyword(s):  
Power Quality ◽  
High Power ◽  
Sine Wave ◽  
Multilevel Inverter ◽  
Multilevel Inverters ◽  
Switching Losses ◽  
Power Capability ◽  
Inverter Topology ◽  
Switching Devices

The Multilevel inverters are known for their high power capability and reliability. They produce the output in the form of staircase waveform. If the number of level increases then almost perfect sine wave can be attained at the output. The increase in number of levels improves the power quality but it also increases the complexity in control and cost, which will increase the switching losses also. Hence there is a need for research in the multilevel inverter topology to have reduced number of switches for increased levels than the conventional and pre-proposed topologies. The purpose of this paper is to design the new topology on multilevel inverter with reduced switching devices

scholarly journals Modeling and Analysis of Asymmetrical Modified Hybrid Thirty One Level Inverter with Reduced THD

2019 ◽  
Vol 8 (4) ◽  
pp. 3628-3632
Keyword(s):  
Power Quality ◽  
Pulse Width ◽  
Pulse Width Modulation ◽  
Control Method ◽  
Multicarrier Modulation ◽  
Multilevel Inverter ◽  
Modeling And Analysis ◽  
Dc Voltage ◽  
Minimum Number ◽  
Switching Devices

This paper proposes a 1Φ 31 level inverter using minimum number of switching devices and improved THD level. Multi Carrier based Pulse Width-Modulation (MC-PWM) control method is used to control MOSFET switches in input and load side. In this paper a modified hybrid asymmetrical multilevel inverter using eight numbers of switching devices driven by the multicarrier modulation technique is proposed. This inverter produces thirty one levels at output from four different dc voltage sources. Also THD level is taken into consideration to maintain the power quality. The proposed 31 level inverter is verified through MATLAB simulink.

scholarly journals An Advanced Control Technique for Power Quality Improvement of Grid-Tied Multilevel Inverter

2021 ◽  
Vol 13 (2) ◽  
pp. 505
Author(s):  
Sumaya Jahan ◽  
Shuvra Prokash Biswas ◽  
Md. Kamal Hosain ◽  
Md. Rabiul Islam ◽  
Safa Haq ◽  
...  
Keyword(s):  
Power Quality ◽  
Harmonic Distortion ◽  
Multilevel Inverter ◽  
Control Technique ◽  
Solar Pv ◽  
Pv System ◽  
Reference Tracking ◽  
Proportional Integral ◽  
Lead Compensator ◽  
Power Quality Improvement

The use of different control techniques has become very popular for controlling the performance of grid-connected photovoltaic (PV) systems. Although the proportional-integral (PI) control technique is very popular, there are some difficulties such as less stability, slow dynamic response, low reference tracking capability, and lower output power quality in solar PV applications. In this paper, a robust, fast, and dynamic proportional-integral resonance controller with a harmonic and lead compensator (PIR + HC + LC) is proposed to control the current of a 15-level neutral-point-clamped (NPC) multilevel inverter. The proposed controlled is basically a proportional-integral resonance (PIR) controller with the feedback of a harmonic compensator and a lead compensator. The performance of the proposed controller is analyzed in a MATLAB/Simulink environment. The simulation result represents admirable performance in terms of stability, sudden load change response, fault handling capability, reference tracking capability, and total harmonic distortion (THD) than those of the existing controllers. The responses of the inverter and grid outlets under different conditions are also analyzed. The harmonic compensator decreases the lower order harmonics of grid voltage and current, and the lead compensator provides the phase lead. It is expected that the proposed controller is a dynamic aspirant in the grid-connected PV system.

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