scholarly journals Implementation of a Single Phase Switched-Capacitor Nine-Level Inverter for PV System Applications with Selective Harmonic Elimination

2017 ◽  
Vol 168 (7) ◽  
pp. 9-15 ◽  
Author(s):  
Ayoub Nouaiti ◽  
Abdallah Saad ◽  
Abdelouahed Mesbahi ◽  
Mohamed Khafallah
Keyword(s):  
Single Phase ◽  
Switched Capacitor ◽  
Pv System ◽  
Harmonic Elimination ◽  
Selective Harmonic Elimination

scholarly journals Selective Harmonic Elimination Based THD Minimization of a Symmetric 9-Level Inverter Using Ant Colony Optimization

2021 ◽  
Vol 8 (5) ◽  
pp. 769-774
Author(s):  
Neerudi Bhoopal ◽  
Dokku Sivanaga Malleswara Rao ◽  
Bharath Kumar Narukullapati ◽  
Idamakanti Kasireddy ◽  
Devineni Gireesh Kumar
Keyword(s):  
Ant Colony Optimization ◽  
Single Phase ◽  
Frequency Control ◽  
Harmonic Distortion ◽  
Low Frequency ◽  
Ant Colony ◽  
Medium Voltage ◽  
Semiconductor Switches ◽  
Harmonic Elimination ◽  
Selective Harmonic Elimination

This paper proposed a new topology of a symmetric single-phase multilevel inverter with the smaller number of semiconductor switches and optimized low-frequency control methods to optimize the Total Harmonic Distortion. A nine-level single phase output is obtained by eight number of active semiconductor switches, four diodes and four capacitors from two asymmetrical dc sources. The selected harmonic order in the output voltage is eliminated by the PWM (SHE-PWM) based on selective harmonic elimination. To optimize the switching angles, an ant colony optimization is introduced. The proposed SHE-PWM and ant optimization are implemented and tested for THD on the SIMULINK platform. The proposed approach offers less THD and is best suited to high-power applications with medium voltage.

Selective Harmonic Elimination Based on Newton-raphson Method for Cascaded H-bridge Multilevel Inverter

2017 ◽  
Vol 8 (3) ◽  
pp. 1193
Author(s):  
Wahidah Abd Halim ◽  
Tengku Noor Ariana Tengku Azam ◽  
Komathi Applasamy ◽  
Auzani Jidin
Keyword(s):  
Single Phase ◽  
Power Converter ◽  
Multilevel Inverter ◽  
Multilevel Inverters ◽  
Harmonic Elimination ◽  
Selective Harmonic Elimination ◽  
Field Programmable ◽  
Newton Raphson ◽  
Harmonic Components ◽  
Raphson Method

<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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