High-Efficiency Multi-Level Power Converter Topology for Advanced Electric Drive Control Systems

Abstract

The growing usage of electric drive systems in industrial automation, electric vehicles and technology to convert renewable energy has provided an ever-growing need of highly efficient and reliable power conversion structures. The traditional power converter networks employed in the power drives are usually characterised by a variety of limitations, among them being high switching losses, high harmonic distortion as well as low power transformation efficiency in operating conditions of dynamic nature. These problems adversely affect the general work of the systems, their power consumption, and the stability of the use of electric drives in the long perspective. This paper aims to solve these problems by presenting a high-efficiency multi-level power converter circuit combined with a Model Predictive Control (MPC) to control systems of advanced electric drives. The suggested topology is an improved quality of voltage waveforms and minimised the switching losses due to the optimised switching state choice which was offered by the predictive control algorithm. The MPC scheme anticipates beginning system behaviour and the most preferred actions to switch the system that will reduce the current tracking error as well as facilitate the converter effectiveness. Evaluation of the performance of the proposed system is done by the close simulation analysis of the results under different load and operational conditions with streamlined simulation analysis of the merits such as converter efficiency, total harmonic distortion (THD), switching losses, and response of the electric drive under dynamic conditions. It has been shown that the suggested converter topology along with MPC leads to an increase in the overall efficiency of the system, a decrease in harmonic distortion, and a quicker dynamic response as opposed to the traditional converter topologies. These advancements demonstrate the possibility of the proposed strategy in the next generation of high-performance electric drive systems that will be applicable in the modern industrial and renewable energy systems.