SHEPWM in three-phase voltage source inverters by modified Newton–Raphson

<span lang="EN-US">This paper describes a new strategy for optimizing the switching angles of three-phase inverter in photovoltaic system. It presents non-traditional solutions to problem selective harmonic elimination (SHE) (VSI)-fed induction motor drives. The aforementioned was solved independently by using hybrid genetic algorithms (HGAs) and modified Newton–Raphson method. GAs can obtain correct solution even if first generation is arbitrary. then converges rapidly. method used solve transcendental equations SHE pulses width modulation (SHEPWM) technique, which unique that produces all possible without assuming initial angles. This technique not complex ensures rapid convergence solution. A real-time experimental verification SHEPWM performed OP5600 RT-Lab simulator. results obtained show proposed algorithm controls fundamental voltage effectively eliminates desired harmonics, evolution signal quality increases according index. For M=1.1 SHE-PWM gives best result: current THD 5% frequency 1150 Hz.</span>