Harmonic mitigation of cascaded multilevel inverter with non equal DC sources using Hybrid Newton Raphson Method

Author(s):  
A. Kumar ◽  
D. Chatterjee ◽  
A. Dasgupta
2018 ◽  
Author(s):  
Asnil ◽  
krismadinata ◽  
Irma Husnaini ◽  
Syahril

This paper recounts an approach to optrmize the switching angles or single-phase live-level cascaded H-bridgc multilevel inverter. Optimized Harmonic Elimination Stepped Waveform (OHESW) technique was engaged to enhance the output waveform quality. Newtcn-Raphson method is employed to determine the switching angles for the inverter which eliminates specified higher order harmonics while maintaining the required fundamental voltage. Computation resulting from the optimized switching angle was simulated Its results indicated the proposed method's effectiveness


2021 ◽  
Author(s):  
Adolfo R. Lopez ◽  
Christopher J. Cortes ◽  
M. Gilberto Munoz ◽  
J. A. Verdin ◽  
Jesus F. Perez ◽  
...  

Author(s):  
Wahidah Abd Halim ◽  
Tengku Noor Ariana Tengku Azam ◽  
Komathi Applasamy ◽  
Auzani Jidin

<span lang="EN-US">Multilevel inverters are emerging as the new breed of power converter options for high power applications. They typically synthesis the staircase voltage waveform (from several dc sources) which reduced harmonic content. This paper presents a simple selective harmonic elimination (SHE) modulation for single-phase cascaded H-bridge (CHB) multilevel inverter. The optimum switching angle of the transcendental equations describing the fundamental and harmonic components is solved by means of the Newton-Raphson (NR) method. The proposed SHE scheme is performed through simulation using MATLAB/Simulink. This simulation results are then verified through experiment using Altera DE0-Nano field-programmable gate array (FPGA). The proposed SHE is efficient in eliminating the lowest-order harmonics and producing a higher quality output waveform with a better harmonic profile.  </span>


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