A d-q-0 Frame based Deadbeat Controller for Voltage Source Converter-High Voltage Direct Current Systems and its performance under Line-Line AC Fault Condition

The focus of this paper is verification and analysis of the performance of deadbeat based regulator in the d-q-0 frame i.e the synchronous frame for the regulation of HVDC employing VSC. The performance analysis of deadbeat controller along with its dynamic response is of prime importance. The design of deadbeat control system is carried on and the controller so obtained is implemented in the detailed model. The system performance is verified owing to variations in the per unit value of the active power, current, reactive power and voltage (the system being subjected to L-L AC fault). The perk of developing and implementing the deadbeat controller is it shows fast tracing and detecting ability, it is accurate and robust and has fast response and feedback abilities to any grid transient disturbances. The MATLAB/SIMULINK platform is put into use for the verification of simulation test results.