Abstract
Inverters are used to convert the DC energy to AC energy for renewable energy conversation or high power industrial applications. Asymmetric inverters are preferred about their some advantages. Nowadays, control of inverters is achieved lots of pals with modulation (PWM) techniques. Space vector control is one of them. Seven level asymmetric cascade inverter is achieved with space vector PWM (SVPWM) added proportional resonant (PR) control in this study. The PR control is used for reducing the lower number harmonics. General SVPWM techniques use position of a vector in αβ frame. Calculation of switching states becomes more complex when the level of inverter is increased. In this study, switching states is achieved with ceil and floor operations by using reference signals in 60° degree coordinate system. Switching signal is generated depends on output levels of inverter. This process is mitigated calculations in SVPWM. Also adding PR control to system decreases the total harmonic distortion (THD) of inverter.
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