Optimization of SHEPWM cascaded multilevel inverter switching patterns

Hiendro, Ayong; Yusuf, Ismail; Junaidi, Junaidi; Wigyarianto, Trias Pontia; Simanjuntak, Yohannes M

doi:10.11591/ijpeds.v11.i3.pp1570-1578

Cited by 9 publications

(7 citation statements)

References 25 publications

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“…The calculated modulation is characterized by k electrical angles, which are denoted as α1, α2, … αk. These angles allow (1) the cancellation of k harmonics or (2) the cancellation of k−1 harmonics and the setting of the fundamental voltage amplitude [22], [26]. Usually, a wave that is symmetrical with respect to the quarter period is used, and the other angles are deduced according to the symmetry.…”

Section: Calculation Methodsmentioning

confidence: 99%

SHEPWM in three-phase voltage source inverters by modified Newton–Raphson

Bousmaha

Bechekir

Abdeslam

et al. 2023

IJPEDS

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<span lang="EN-US">This paper describes a new strategy for optimizing the switching angles of a three-phase inverter in a photovoltaic system. It presents non-traditional solutions to the problem of selective harmonic elimination (SHE) in three-phase inverter (VSI)-fed induction motor drives. The aforementioned problem was solved independently by using hybrid genetic algorithms (HGAs) and a modified Newton–Raphson method. GAs can obtain the correct solution even if the first generation is arbitrary. The solution then converges rapidly. The modified Newton–Raphson method is used to solve transcendental equations of the SHE pulses width modulation (SHEPWM) technique, which is a unique method that produces all possible solutions without assuming the initial angles. This modified technique is not complex and ensures rapid convergence to the solution. A real-time experimental verification of the SHEPWM technique was performed in the OP5600 RT-Lab simulator. The results obtained show that the proposed SHEPWM algorithm controls the fundamental voltage and effectively eliminates the desired harmonics, and that the evolution of the signal quality increases according to the modulation index. For M=1.1 the SHE-PWM gives the best result: a current THD of 5% for a switching frequency of 1150 Hz.</span>

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Section: Calculation Methodsmentioning

confidence: 99%

SHEPWM in three-phase voltage source inverters by modified Newton–Raphson

Bousmaha

Bechekir

Abdeslam

et al. 2023

IJPEDS

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“…Di dalam makalah ini, dijabarkan proses perancangan inverter multilevel kaskade dengan menggunakan teknik SHEPWM untuk mengeliminasi komponen harmonisa tertentu dari tegangan AC yang dibangkitkan. Sudut-sudut penyalaan optimum yang digunakan diekstrak dari hasil penelitian pada [22]. Selanjutnya analisis dan simulasi komputer dilakukan dengan menggunakan perangkat lunak PSPICE untuk memvalidasi hasil perancangan dan perhitungan secara teoritis.…”

Section: Pendahuluanunclassified

“…Supaya menghasilkan tegangan AC dengan harmonisa ke-3 tereliminasi maka diperlukan 2 sudut pensaklaran optimum, yaitu θ1 dan θ2. Untuk memperoleh 2 sudut pensaklaran tersebut maka harus menyelesaikan sistem persamaan nonlinier sebagai berikut: Hasil penyelesaian sudut-sudut pensaklaran optimum berdasarkan laporan penelitian dalam [22], disajikan dalam Tabel 1.…”

Section: A Inverter 5-levelunclassified

Analisis Simulasi Inverter Multilevel Kaskade dengan Teknik Selective Harmonic Elimination Pulse Width Modulation

Hiendro

Yusuf

2021

JEPIN

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Salah satu teknik pengendalian saklar-saklar semikonduktor daya dari inverter multilevel adalah menggunakan Pulse Width Modulation (PWM). Dari berbagai teknik PWM, Selective Harmonic Elimination Pulse Width Modulation (SHEPWM) merupakan teknik yang andal dalam mengeliminasi harmonisa-harmonisa tingkat rendah. Tujuan dari makalah ini adalah menjabarkan proses perhitungan, perancangan dan simulasi inverter multilevel kaskade dengan menggunakan teknik SHEPWM. Pulsa-pulsa pensaklaran setiap saklar semikonduktor daya inverter dibangun berdasarkan sudut-sudut pensaklaran optimum agar komponen harmonisa tertentu dapat tereliminasi. Demikian pula gelombang tegangan AC yang dihasilkan dapat diprediksi bentuknya berdasarkan hasil rancangan. Selanjutnya simulasi komputer dilakukan dengan perantara perangkat lunak PSPICE. Analisis hasil simulasi terhadap inverter 9-level menunjukkan komponen harmonisa ke-3, 5 dan 7 tereliminasi sama sekali. Hasil ini sesuai dengan perhitungan dan perancangan secara teoritis.

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“…Meanwhile, low frequency switching includes Optimal Switching Angle (OSA), Selective Harmonic Elimination (SHE) PWM, Space Vector Control (SVC), and Nearest Level Control (NLC) [5]- [7]. SHEPWM, a low frequency technique, has recently gained popularity [8]- [10].…”

Section: Introductionmentioning

confidence: 99%

Harmonics Elimination in 7-Level Multilevel Inverter Using Animal Migration Optimization Algorithm with Different Objective Functions

Sabirin¹,

Isa²,

Arshad³

et al. 2023

IJETAE

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Harmonics can degrade the power quality of a multilevel inverter by causing the voltage to be distorted and vary from sinusoidal waveforms. Harmonics can be reduced by increasing the number of voltage levels or by employing suitable modulation techniques. In this paper, The Selective Harmonic Elimination Pulse Width Modulation (SHEPWM) modulation method is employed to obtain the optimal switching angles that able to reduce the specific individual harmonic and the Total Harmonic Distortion (THD) in singlephase 7-level Cascaded H-Bridge multilevel inverter. The Animal Migration Optimization (AMO) is proposed to acquire these angles using two difference objective functions. The performance is examined and evaluated. Both objective functions able to determine the optimal switching angles starting from modulation index of 0.34. However, the comparative study demonstratethat objective function number 2 has better performance in term of lowering selective individual harmonics as well as THD.

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Optimization of SHEPWM cascaded multilevel inverter switching patterns

Cited by 9 publications

References 25 publications

SHEPWM in three-phase voltage source inverters by modified Newton–Raphson

SHEPWM in three-phase voltage source inverters by modified Newton–Raphson

Analisis Simulasi Inverter Multilevel Kaskade dengan Teknik Selective Harmonic Elimination Pulse Width Modulation

Harmonics Elimination in 7-Level Multilevel Inverter Using Animal Migration Optimization Algorithm with Different Objective Functions

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