Abstract

HVDC systems are attractive alternatives to increase transmittable power over long distances. The power loss of a DC line is lower than that of a corresponding AC line of the same power rating. The HVDC transmission based on Voltage Source Converters (VSC) uses IGBT's (Insulated Gate Bipolar Transistors) and PWM technique maintain the desired level voltage. This paper proposes the modern adaptive backstepping controller for Voltage Sourced Converter (VSC) based HVDC. The adaptive backstepping controller adapts non linear nature of the VSC based HVDC systems which uses parameter uncertainties. The Lyapunov functions are adapted to deduce the control laws by step by step procedure. Based on the adaptive backstepping method, the final control law can be deduced step by step. The performance of the proposed controller has been investigated under different operating conditions like step changes in active and reactive power, including post fault recovery. The efficacy of the implemented backstepping controller is presented with VSC based HVDC Transmission systems with digital simulation tool of PSCAD/EMTDC. The results of simulation under broad choice of operating region show that the proposed controller effectively contribute towards the bidirectional as well as independent flow of real and reactive power flow control of VSC-HVDC system.

Talk to us

Join us for a 30 min session where you can share your feedback and ask us any queries you have

Schedule a call

Disclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.