Distribution system compensation using a new binary multilevel voltage source inverter

A new binary multilevel voltage source inverter with separate de sources is proposed. This n-level voltage source inverter produces a (2(n+1) - 1)-steps ac voltage output with n full bridge inverters connected in series. The use of selective harmonic elimination modulation technique to either completely eliminate or minimize harmonics is studied. A closed-loop controller to control the capacitor voltages and adjust the inverter reactive power output is developed. Application of such a, compensator for dynamic compensation of 13.8 kV distribution system is examined through transient studies using PSCAD/EMTDC program. The proposed inverter configuration not only reduces the system complexity and its size, but also improves the harmonic profile significantly.