Fault Resilient Ability of Reduced Switches Multi Level Inverter for Off Grid Applications

IF 1.5 4区 工程技术 Q3 ENGINEERING, ELECTRICAL & ELECTRONIC
Pavan Kumar Chillappagari, Karthick Nagaraj, Madhukar Rao Airineni
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Abstract

In this article, reduced switch-based fault resilience capable multi-level inverter (MLI) with phase disposition pulse width modulation (PD-PWM) strategy is implemented. For reliable power conditioning and monitoring of PV based systems multi-level inverter (MLI) received a lot of attention. The switching device quantity mainly influences of volume and reliability in a MLIs. It is a crucial challenge in on and off-grid applications. Because of the high failure rate of power devices, the reliability of MLI utilized in PV and grid-connected systems is very poor or susceptible. To reduce the switching losses and enhance the MLIs reliability with fault resiliency, the reduced switch component topology is proposed in this work. Instead of a single switch, the suggested configuration is employed with multiple switch fault resiliency, then the reliability of the inverter is enhanced. Further, the PD-PWM switching strategy is employed for the MLI operation. The proposed scheme offers an excellent performance with significant result of THD, switching losses, and efficacy. The implemented inverter topology with PD-PWM strategy is simulated in MATLAB/Simulink along with fault tolerance operation under normal and faulty operation. Also, the real-time operation of proposed topology with experimental setup is validated using field programmable gate array (FPGA) controller.

Abstract Image

用于离网应用的减少开关多电平逆变器的故障恢复能力
本文采用相位差脉宽调制(PD-PWM)策略,实现了基于开关的故障恢复能力较弱的多电平逆变器(MLI)。多电平逆变器(MLI)在光伏系统的可靠功率调节和监控方面受到广泛关注。开关器件的数量主要影响多电平逆变器的容量和可靠性。这在并网和离网应用中都是一项重要挑战。由于功率器件的高故障率,光伏和并网系统中使用的多级互联器的可靠性很差或很容易受到影响。为了减少开关损耗,提高多路复用器的可靠性和故障恢复能力,本研究提出了减少开关元件的拓扑结构。建议的配置采用多开关故障恢复能力,而不是单开关,从而提高了逆变器的可靠性。此外,MLI 运行还采用了 PD-PWM 开关策略。所建议的方案性能卓越,在总谐波失真(THD)、开关损耗和功效方面均有显著改善。在 MATLAB/Simulink 中模拟了采用 PD-PWM 策略的逆变器拓扑结构,以及正常和故障运行下的容错操作。此外,还使用现场可编程门阵列 (FPGA) 控制器验证了所提拓扑结构与实验装置的实时运行。
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来源期刊
CiteScore
5.50
自引率
4.20%
发文量
93
审稿时长
>12 weeks
期刊介绍: Transactions of Electrical Engineering is to foster the growth of scientific research in all branches of electrical engineering and its related grounds and to provide a medium by means of which the fruits of these researches may be brought to the attentionof the world’s scientific communities. The journal has the focus on the frontier topics in the theoretical, mathematical, numerical, experimental and scientific developments in electrical engineering as well as applications of established techniques to new domains in various electical engineering disciplines such as: Bio electric, Bio mechanics, Bio instrument, Microwaves, Wave Propagation, Communication Theory, Channel Estimation, radar & sonar system, Signal Processing, image processing, Artificial Neural Networks, Data Mining and Machine Learning, Fuzzy Logic and Systems, Fuzzy Control, Optimal & Robust ControlNavigation & Estimation Theory, Power Electronics & Drives, Power Generation & Management The editors will welcome papers from all professors and researchers from universities, research centers, organizations, companies and industries from all over the world in the hope that this will advance the scientific standards of the journal and provide a channel of communication between Iranian Scholars and their colleague in other parts of the world.
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