Fuzzy Logic Based Synchronous Reference Frame Control of MLI- STATCOM in Distribution Network

Abstract

In this Project Fuzzy based MLI-STATCOM with Synchronous reference frame  in Distribution network is presented. In Modern distribution systems have very complex networks connected with linear and nonlinear loads. The presence of harmonics in system it will effected with power quality problems. Due to this high amount of power losses and disoperation of power electronics devices is caused, along with this Harmonics have a number of undesirable effects like Voltage disturbances. These harmonics are needed to mitigate for Power Quality Enhancement in distributed system. To suppress harmonics and other power quality issues related to current, Distribution Static Compensator (DSTATCOM) connected across load is proved to be effective. DSTATCOM is one of the FACTS Devices which can be used to mitigate the harmonics. This paper proposes a five-level diode clamped Multilevel Inverter based Distribution STATCOM (MLI- DSTATCOM) with Synchronous Reference Frame based control for harmonic mitigation. The voltage source converter is core of the DSTATCOM and the hysteresis current control is indirect method of controlling of VSC. In this paper we implement with SRF based DSTATCOM control. SRF theory is implemented for the generation of controlling reference current signals for controller of DSTATCOM. A fuzzy logic control scheme is proposed for the controlling operation of STATCOM. The system performance will analyzed by using MATLAB/SIMULINK software.