In this paper, minimization of the total harmonics (THD) present in the output voltage of multilevel inverters is discussed . In order to reduce the harmonic contents of the inverter's output voltage the best approach is THD minimization. In multilevel inverters, if fundamental frequency switching strategy is considered,(each switch turning on and off once per output cycle), the switching angle...

Minimum Total Harmonic Distortion (THD) is one of the most important requirements from multilevel inverter concerning good Power Quality. This paper presents the optimization of THD in 13 level Cascaded Multilevel Inverter with unequal dc source using Genetic Algorithm (GA). THD minimization is taken as an optimization problem derived from Selective Harmonic Elimination Pulse width Modulation (...

Direct torque control (DTC) is a method applied in induction motor (IM) drives to the speed and of IM accurately independently without feedback signal. However, fast fourier transform (FFT) analysis, total harmonic distortion (THD) high DTC with conventional inverter (CI). Therefore, purpose this study minimize THD affecting drive’s performance. A drive multilevel (MLI) proposed reduce preserve...

In this paper, a method for minimization of Total Harmonic Distortion (THD) is proposed in case of PWM inverter. Inverters are widely used in many applications such as in the UPS and ac motor drives resulting in harmonics production. A phase compensation Resonant Controller (RSC) is proposed for 1-phase pulse width modulation (PWM) inverter using MATLAB simulation. The simulation results are th...

In the viewpoint of reliability implication and cost effectiveness of three phase inverter, there should be less device count in inverter topology and fewer losses in the semiconductor switches. The earlier reported less device count topology by many research groups are facing the problem of Total Harmonic Distortion (THD). The imperfect design value of DC link capacitor is the main reason of H...

The total number of switching pulses permitted in one-quarter the fundamental-cycle an inverter is restricted due to restrictions losses high-power devices. elimination major low-order dominating harmonics using SHEPWM (Selective Harmonic Elimination) suggested this research paper. positive or negative voltage transition at instant where fundamental has greatest slope distinguishes various type...