Integrating multilevel converters application on renewable energy sources—A survey

Abstract

Multilevel inverters emerged as the solution for overcoming the limitations of two level inverters, such as total harmonic distortion, high magnetic interference, and high dv/dt in high power voltage applications. The ability to generate sinusoidal output voltage is another speciality of multilevel inverters. The wide range of applications in fields such as power grids, motor drives, and Volt-Ampere Reactive compensation enhances the visibility of multilevel inverters. This paper identifies the conventional multilevel inverter topologies such as diode clamped multilevel inverters, flying capacitor multilevel inverters, and cascaded H bridges and presents a literature review on the topologies considering the facts of structural and functional diversities over the ages which have been adapted right from the beginning of its emergence. It also details the various optimization technologies that are used in multilevel inverters to obtain the optimal switching angle for harmonic elimination. This paper also explains the modulation techniques that are in effect for a specific purpose in different applications to get the best possible result.

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

“…Seiring meningkatnya kebutuhan industri dan aplikasi pada sistem energi baru dan terbarukan (EBT) terhadap perangkat inverter bermampuan daya listrik besar yang tidak dapat dipenuhi oleh inverter 2-level [1], inverter multilevel [2] menjadi semakin menarik perhatian bagi para peneliti di bidang elektronika daya. Selain itu, di dalam aplikasi berdaya listrik besar, agar rugi-rugi pensaklaran tidak menjadi besar maka diperlukan frekwensi pensaklaran yang rendah dan hal ini mampu dipenuhi oleh inverter multilevel.…”

Design and analysis of a new multi-level inverter topology with a reduced number of switches and controlled by PDPWM technique

“…stable [3], this causes instability in the production of electricity and contributes to the fidelity and quality of the electrical system. DC/AC converters are crucial to solve these problems [4].…”

Wavelet Transform Based Fault Identification and Reconfiguration for a Reduced Switch Multilevel Inverter Fed Induction Motor Drive

“…Multilevel inverters have gained importance in the past few decades since they are suitable for high voltage and high-power applications by virtue of their ability to synthesize waveforms with improved harmonic spectrums and lower total harmonic distortions (THD). Compared to the classical square-wave or quasi-square wave inverters, the multilevel inverter has a number of advantages such as near-sinusoidal wave-shapes, low common-mode voltage, low dv/dt voltage stress, low harmonic profile, low electromagnetic interference effects, good operating efficiency, and regulation of the drive speed [3,4]. Various formal multilevel inverter structures are the diode-clamped multilevel inverter [5], the flying-capacitor multilevel inverter [6], and cascaded H-bridge multilevel inverter (CHB-MLI) [7].…”