Paper Contents
Abstract
This work presents the design and analysis of a Hybrid Bridge Multilevel Inverter (HBMI) topology for both symmetrical and asymmetrical sources. Multilevel inverters (MLIs) have gained significant attention due to their ability to produce high-quality output waveforms with reduced harmonic distortion and lower electromagnetic interference. The proposed HBMI topology leverages the advantages of traditional H-bridge inverters while integrating auxiliary circuits to enhance performance and efficiency of the conventional bridge converter. In the symmetrical configuration, identical DC voltage sources are utilized, facilitating a straightforward design and control strategy. For the asymmetrical configuration, different DC voltage levels are employed, offering a higher number of output voltage levels with the same number of power electronic components, thereby improving the output waveform quality without significantly increasing the circuit complexity. The proposed converter uses two auxiliary circuits, each auxiliary consisting of a four diodes along with the one IGBT with the bridge inverter. The seven level voltages are achieved using HBMI and the proposed topology is applicable for both symmetrical and asymmetrical sources. The study includes a detailed analysis of the device count and harmonic investigation of voltage & current at load side.
Copyright
Copyright © 2024 Sushil Kumar . This is an open access article distributed under the Creative Commons Attribution License.
