Performance Analysis of 6-Pulse 2-level HVDC-VSC using Particle Swarm Optimization (PSO) based Controller in d-q Reference Frame under AC Fault Conditions

This paper provides the PSO based control scheme for regulation of active power and reactive power flow across the HVDC-VSC.PSO is based on the principle of "survival of the fittest", originating from the idea of describing the mechanism of natural selection of the best food location. The tuning of the PI controller using the computational intelligence based tuning technique is observed to outdo many conventional tuning techniques with respect to convergence speed and precision. Also, PSO provides the scope of self-tuning of the PI controller i.e with the change in system operating condition, the controller adjusts itself or tunes itself , thereby regulating the active power and reactive power. Also, PSO depend on the value of the objective function thereby making the computation less tedious and easy for implementation .The system is subjected to AC faults, and the response of the system is validated using MATLAB/SIMULINK platform.