Performance Analysis of Diode-Clamped Inverter-Fed Three-Phase Induction Motor Drive Using SVPWM Technique

摘要

The multilevel diode-clamped inverter is widely used in industries due to its various advantages over conventional voltage source inverter (VSI). For diode-clamped multilevel inverter (DCMLI)-fed induction motor, a space vector pulse width modulation (SVPWM) algorithm has been proposed in this paper and is applied to three-level and five-level inverters. The memory of the controller is saved through determining the switching sequence without using lookup tables. The switching time of voltage vector of multilevel inverter has been computed based on the same pattern as followed in two-level inverter. The suggested method can also be applied to any level inverter. The simulation has been performed for five-level inverter-fed induction motor in this paper using the proposed method.