Genetic Algorithm Based PI Control with 12-Band Hysteresis Current Control of an Asymmetrical 13-Level Inverter

Abstract

In this paper, a twelve-band hysteresis control is applied to a recent thirteen-level asymmetrical inverter topology by employing a robust proportional-integral (PI) controller whose parameters are decided online by genetic algorithm (GA). The asymmetrical inverter topology can generate thirteen levels of output voltage incorporating only ten switches and exhibits boosting capability. A 12-band hysteresis current control strategy is applied to ensure the satisfactory operation of the inverter. It is designed to provide a sinusoidal line current at the unity power factor. The tuning of the PI controller is achieved by a nature inspired GA. Comparative analysis of the results obtained after application of the GA and the conventional Ziegler–Nichols method is also performed. The efficacy of the proposed control on WE topology is substantiated in the MATLAB Simulink environment and was further validated through experimental/real-time implementation using DSC TMS320F28379D and Typhoon HIL real-time emulator (Typhoon-HIL-402).

Novel Three-Phase Nine-Level Inverter and Its Control Strategies

“…Firstly, a PWM technique is applied to the proposed inverter, as a result the system offering nine levels in output voltage without using any closed loop regulation [8][9][10][11][12][13][14][15][16][17][18][19]; because the latter is not suitable for some industrial applications, this allows a low cost of inverter and installation. Secondly, a hysteresis control is used to provide a near sinusoidal without the use of a voltage sensor or PI controllers.…”