Optimal Design of Fractional Order Vector Controller Using Hardware-in-Loop (HIL) and Opal RT for Wind Energy System

Abstract

In this paper, a fractional order active (P) and reactive (Q) power controller of doubly fed induction generator (DFIG) is developed and it performance is demonstrated using hardware in loop (HIL) testing with Opal RT OP4510 real-time platform. The DFIG in this paper is modelled using real-time State Space Nodal (SSN) based solver. The Rotor Side Converter (RSC) and doubly fed induction machine are implemented using Opal-RT’s ARTEMiS – nodal admittance-based SSN solver which uses smaller time steps than the conventional algorithms to facilitate real-time hardware-in-loop performance analysis of the system. The MATLAB-based FOMCON platform is utilized for designing the proposed fractional order controller. The proposed controller is developed and tested for various dynamic conditions. The performance of conventional proportional integral control and proposed fractional order control using Opal-RT’s OP4510 real-time platform is compared. The experimental results demonstrate improved efficiency with the use of proposed fractional order controller.

Keywords

• State space nodal (SSN) solver
• field oriented control
• fractional order controller
• optimal control