Review on Switched Capacitor Multilevel Inverter

Abstract

The switched capacitor multilevel inverter (SCMI) is a viable alternative to traditional multilevel inverters due to its ability to handle higher power and voltage levels. The switched capacitor multilevel inverter is examined in depth in this work. Control techniques used in SCMI systems, such as voltage balancing, capacitor voltage regulation, and output waveform creation, are also investigated. The importance of precise control in obtaining peak performance and dependable operation is emphasised, and contemporary developments in control methods are covered.

The output waveform quality and overall system efficiency are both heavily influenced by the modulation technique used. This paper synthesises the present state of switched capacitor multilevel inverter research and development, with an eye on the inverters' potential to alter the status quo of high-power, high-voltage uses. The use of multilevel inverters has become commonplace in renewable energy systems. In addition to lowering the size of the filter and simplifying the circuitry, these inverters' output voltages are more sinusoidal and have less harmonics than those of traditional two-level inverters. When the number of output voltage levels is increased in traditional multilevel inverter topologies, the resulting circuitry becomes cumbersome and expensive. In this study, we provide a comprehensive review of the recently developed SCMLIs. The various SCMLIs have been sorted into groups according to their voltage gains and amount of complexity. In this study, we present a comprehensive contrast.