Design, Modeling and Performance of Static Synchronous Series Compensator Regulated Self-excited induction generator

Voltage regulation of Self-Excited Induction Generator (SEIG) deteriorates with the inductive load and loading. In this paper, the attempt is made to design, model and to improve the SEIG performance using self supported static synchronous series compensator (SSSC). Contrary to series capacitor method, the performance with SSSC is extremely improved. The modeling of SEIG is done in q-d frame. The SSSC model is developed in abc frame. The control technique of SSSC consists of dual proportional-Integral (PI) controllers, one is applied to maintain dc link voltage by producing reference in-phae SSSC voltage and other PI controller is applied to maintain the load terminal voltage by producing reference quadrature SSSC voltage. Hysteresis current controller is applied to produce the pulses for SSSC. The proposed control technique is simulated on developed model of SEIG-SSSC system. The system is tested for variety of three-phase inductive load with sudden loading and unloading conditions. The power quality of SEIG-SSSC system is also assessed by evaluating harmonic spectrum of generator and load side voltage and current. The Total harmonic distortion (THD) of SEIG-SSSC system is obtained to comply the IEEE 519 standard. Overall the system performance is found to be satisfactory.