New scheme of SHE-PWM technique for cascaded multilevel inverters with regulation of DC voltage sources

Behbahanifard, Hamidreza; Abazari, Saeed; Sadoughi, Alireza

doi:10.1016/j.isatra.2019.07.015

Cited by 14 publications

(10 citation statements)

References 25 publications

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“…Permasalahan utama yang berkaitan dengan teknik SHEPWM adalah bagaimana memperoleh sudut-sudut pensaklaran optimum dan mengaplikasikannya guna mengeliminasi komponen harmonisa tertentu dari tegangan AC yang dibangkitkan oleh inverter multilevel [20], [21].…”

Section: Pendahuluanunclassified

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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Section: Pendahuluanunclassified

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

Hiendro

Yusuf

2021

JEPIN

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“…MLIs are preferred due to their superior sinusoidal output, reduced harmonics, improved efficiency, and enhanced electromagnetic compatibility. The decrease in dv/dt ratio reduces the blocking voltage requirement, resulting in a smaller filter and lower costs [1][2][3][4].…”

Section: Introductionmentioning

confidence: 99%

Switched Capacitor Inverter with Reduced Inrush Current and High Boosting Gain

Choudhary,

Singh,

Mandal

et al. 2024

Energies

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This article describes a 17-level switched-capacitor-based eight-times-boosting gain inverter. The inverter is made up of a DC power source, thirteen switches, three diodes, and three capacitors. The inverter produces seventeen steps during each cycle and crosses the zero line two times in one complete cycle. The proposed inverter has its polarity change mechanism; it is not necessary to use an H-bridge. Three self-balancing capacitors make up this construction. The capacitors automatically balance voltage by connecting in series/parallel to the input voltage source. Logic gates can generate gate pulses with the phase disposition pulse-width modulation technique, which helps to preserve capacitor voltage balance at the same time. The proposed structure was compared to recent papers, analyzing factors including voltage gain, DC sources, semiconductor devices, cost function, and TSV. The proposed configuration offers cost effectiveness and fewer semiconductor devices for providing a 17-level output with sufficient voltage gain. Also, to reduce the capacitor inrush current, soft charging is used. Additionally, the proposed structure’s power losses were examined, confirming its efficiency. Finally, an experimental prototype was tested to analyze and validate the suggested structure’s performance under various situations. Results show the proposed structure performs well under steady and dynamic situations.

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“…To maximize the advantages of a modular cascaded energy storage system, a suitable modulation technique must be designed. Pulse Width Modulation (PWM) technology has been extensively studied and various methods have been developed, such as Nearest Level Modulation (NLM) [1][2][3][4], Selected Harmonic Elimination PWM (SHEPWM) [5][6], Space Vector PWM (SVPWM) [7][8] and multi-carrier PWM [9][10]. SHEPWM is suitable for low switching frequency applications, but calculation of the switching angle is difficult due to the large number of levels.…”

Section: Introductionmentioning

confidence: 99%

Novel Hybrid Modulation Method for Modular Multilevel Converter Based Energy Storage System

2023

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This paper focuses on introducing a modular cascaded battery energy storage system and establishing a mathematical model for both the AC and DC sides of the energy storage system. Based on this, a corresponding control strategy is proposed. To achieve a specific trade-off between switching times and output harmonics, a new hybrid modulation strategy (NHPWM) is proposed that combines the characteristics of NLM and CPS-PWM commonly used in traditional modular cascaded topologies. With this hybrid modulation strategy, the modulation of each sub-module can be flexibly configured, allowing the system to coordinate device loss and output harmonic characteristics in real time according to system requirements. Additionally, this paper proposes a calculation method based on the theory of double Fourier series expansion to derive the analytical solution of the NHPWM harmonic distribution, providing a theoretical basis for submodule modulation mode configuration. Finally, the correctness and effectiveness of the modulation strategy and theoretical calculation were verified by simulation and experiment. The proposed method in this paper has demonstrated clear advantages over traditional HPWM and CPS-PWM in terms of harmonics and efficiency, as shown by the experimental results.INDEX TERMS modular multilevel converter (MMC), novel hybrid PWM modulation (NHPWM), nearest level modulation (NLM), carrier phase-shift PWM (CPS-PWM)

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New scheme of SHE-PWM technique for cascaded multilevel inverters with regulation of DC voltage sources

Cited by 14 publications

References 25 publications

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

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

Switched Capacitor Inverter with Reduced Inrush Current and High Boosting Gain

Novel Hybrid Modulation Method for Modular Multilevel Converter Based Energy Storage System

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