Design a novel nine level AC to DC multilevel inverter based on FPGA controllar

In this paper, a novel nine level bi-direction multilevel inverter is proposed, The structure of the main concepts for the use eleven power switch devices to divide input voltage that is replace the traditional circuit using by capacitor. Nine switches and four diodes are required to generate a nine-level output. Additional two switches and inductor will generate an output voltages balance circuit to ensure the same voltage on output capacitor. The control scheme is presented by FPGA Spartan605 evaluation kit that is produce eleven level pulse width modulation (PWM) signal pass to power switches. Nine level bi-direction multilevel major advantages for using nine-level PWM are that the voltage of each capacitor device clamping to 1/4 in the dc output voltage. Finally, a 220V_ac 60Hz input voltage and 200V_dc/2kW output nine level inverter will be simulation.