In this project active front-end solution to balance dc-link capacitor voltage of nine-level diode-clamped inverter. Capacitor voltage balancing performed by three-level boost converter (TLBC) connected to the two inner capacitors of nine-level diode-clamped inverter and additional balancing circuits at other two outer capacitors. Proposed configuration tested through simulation and experiment for various load power factor conditions at high modulation index. The result demonstrates the reliability of proposed configuration to balance the dc-link capacitors voltage at desired level. The TLBC has advantages in high power applications to reduced switching losses and reduced reverse recovery losses of the diode. A fuzzy control system is a control system based on fuzzy logic a mathematical system that analyzes analog input values in terms of logical variables that take on continuous values between 0 and 1, in contrast to classical or digital logic, which operates on discrete values of either 1 or 0 (true or false, respectively).The more level can be produce, it does will be much better for the application. It is because the value of THD also will decrease once the levels of the multilevel inverter increase.
