This paper presents a topology with a reduced number of switches, which is used to reduce the total harmonic distortion (THD%) using MCPWM technique, MCPWM with trapezoidal reference wave and also SHE technique such as PSO technique and Newton-Raphson (NR) technique. SHE technique is used to eliminate a particular harmonic in a multilevel inverter (MLI);the MCPWM and Trapezoidal reference wave ...

Multilevel inputs are capable of generating nearly sinusoidal waveform. The three level inverters use a source with two numbers of capacitors. The operating waveform contains three different levels. The five level inverters use a source with six numbers of capacitors. The operating waveform contains five different levels. The main objective of this paper is to compare the performance of diode c...

Guaranteeing the quality of transmitting current under low switching frequency conditions is crucial point in helicopter transient electromagnetic (HTEM) system which affects efficiency and exploration accuracy. HTEM requires high loss inverter power supply due to facts that uses air-launched air-received measurement methods, storage capacity airborne limited. Paradoxically, directly waveform t...

The multilevel inverters are robust and flexible in grid connected operations. This topology intelligently eliminates lower order harmonics such as 1, 3, 5, 7, 11 up to 19 by solving non-linear transcendental Fourier series equation. The conventional methods like Newton Raphson have problem of iterative and the initial guess are needed to solve non-linear equations. However the Genetic Algorith...

In this paper, in order to improve the control performance of a high-power electrically excited synchronous motor (EESM) under low switching frequency, and poor dynamic response traditional selective harmonic elimination pulse width modulation (SHEPWM) strategy, an optimized (PWM) mode with specific good is studied. Based on fast characteristics predictive control, it combines rolling time doma...