Hybrid modulation based STATCOM with an external photovoltaic source

This paper presents a hybrid modulation based multilevel static synchronous compensator (STATCOM) voltage control method. A multilevel STATCOM is a combination of high voltage converter and low voltage converter with an energy source. STATCOM use either a battery or storage element as the energy bank. Most probably STATCOM consists of capacitors as reactive power supplying or reactive power absorbing element. During the operation of STATCOM, the capacitor voltage may vary from its value, there the importance of this work. A new control strategy is introduced in this paper in focus on the capacitor voltage. An experimental model is developed by using MATLAB SIMULINK block and the result shows that the STATCOM along with the new control technique perform satisfactorily.