Harmonic Elimination in Three-Phase Voltage Source Inverters by Particle Swarm Optimization

Abstract

-This paper presents accurate solutions for nonlinear transcendental equations of the selective harmonic elimination technique used in three-phase PWM inverters feeding the induction motor by particle swarm optimization (PSO). With the proposed approach, the required switching angles are computed efficiently to eliminate low order harmonics up to the 23 rd from the inverter voltage waveform, whereas the magnitude of the fundamental component is controlled to the desired value. A set of solutions and the evaluation of the proposed method are presented. The obtained results prove that the algorithm converges to a precise solution after several iterations. The salient contribution of the paper is the application of the particle swarm algorithm to attenuate successfully any undesired loworder harmonics from the inverter output voltage. The current paper demonstrates that the PSO is a promising approach to control the operation of a three-phase voltage source inverter with a selective harmonic elimination strategy to be applied in induction motor drives.

GA-based optimization and ANN-based SHEPWM generation for two-level inverter

“…This waveform is either square wave or quasi-square wave. The remaining higher-order harmonics are then eliminated by using a small passive filter to reduce harmonic distortion into the load or the grid [1][2][3]. SHEPWM has several advantages including higher voltage gain due to over modulation is possible, reduced ripple on the dc-link voltage, a reduction in switching loses owing to reduced number of switching or switching frequency, elimination of lower order harmonics [4].…”

“…PSO method as an evolutionary algorithm has been suggested in [7]. It is reliable in solving nonlinear problems with multiple optima [1,8]. PSO and GA are methods based on evolutionary algorithms.…”

Modeling and Simulation of Sine PWM VSI fed Induction Motor Drives

“…This method presents about the effects of harmonics upon current, torque & speed of PWM inverter fed induction machine. Harmonic elimination in three phase VSI inverters by particle swarm optimization is given by Mohamed Azad [2]. This paper presents accurate solutions for non-linear transcendental equations of the selective harmonic elimination technique used in three phase PWM inverters feeding the induction motor by particle swarm optimization.…”

A Ripple Rejection Inherited RPWM for VSI Working with Fluctuating DC Link Voltage

“…A host of PWM strategies have been researched with specific targets viz. enhancing the fundamental [6][7][8], controlling the VSI in pulse dropping region [9,10], extending the linearity of output voltage with modulation index [11,12], single mode of control [13], device thermal management [14], reduction of switching losses [15], reduction of distortion [16][17][18], distribution of harmonic power [19] etc. These PWM strategies perform truthfully when the practical conditions in system are ideal.…”