Virtual Flux Predictive Direct Power Control of Five-level T-type Multi-terminal VSC-HVDC System

  • Ahmed Reguig Berra Laboratory of Electrical Engineering, Faculty of Technology, University Mohamed Boudiaf of M'sila, P. O. B. 166, M'sila, 28000, Algeria
  • Said Barkat Laboratory of Electrical Engineering, Faculty of Technology, University Mohamed Boudiaf of M'sila, P. O. B. 166, M'sila, 28000, Algeria
  • Mansour Bouzidi Department of Electronics and Communications, Faculty of New Information and Communication Technologies, Kasdi Merbah University, P. O. B. 511, Ouargla, 30000, Algeria; Department of Electrical Engineering, Faculty of Engineering Sciences, Djillali Liabes University of Sidi Bel Abbes, P. O. B. 89, Sidi-Bel-Abbès, 22000, Algeria

Abstract

This paper proposes a Virtual Flux Predictive Direct Power Control (PDPC) for a five-level T-type multi-terminal Voltage Source Converter High Voltage Direct Current (VSC-HVDC) transmission system. The proposed PDPC scheme is based on the computation of the average voltage vector using a virtual flux predictive control algorithm, which allows the cancellation of active and reactive power tracking errors at each sampling period. The active and reactive power can be estimated based on the virtual flux vector that makes AC line voltage sensors not necessary. A constant converter switching frequency is achieved by employing a multilevel space vector modulation, which ensures the balance of the DC capacitor voltages of the five-level t-type converters as well. Simulation results validate the efficiency of the proposed control law, and they are compared with those given by a traditional direct power control. These results exhibit excellent transient responses during range of operating conditions.

Keywords: High Voltage Direct Current, five-level T-type converter, multi-level space vector modulation, virtual flux estimator, predictive direct power control
Published online
2020-01-08
How to Cite
Reguig Berra, A., Barkat, S. and Bouzidi, M. (ONLINE) “Virtual Flux Predictive Direct Power Control of Five-level T-type Multi-terminal VSC-HVDC System”, Periodica Polytechnica Electrical Engineering and Computer Science. https://doi.org/10.3311/PPee.14441.
Section
Articles