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Port Controlled Hamilton With Dissipation-Based Speed Control of IPMSM Drive

This paper presents a port controlled Hamilton with dissipation (PCHD) based control technique for high precision speed regulation of interior permanent magnet synchronous motor (IPMSM) drive. The PCHD controller is designed by assigning proper interconnection and damping matrix for multivariate, nonlinear, and time-varying IPMSM system to prove its passivity and ensure its global stability. A torque observer is also designed based on pole placement method to monitor the external load. The stability analysis of the proposed PCHD and uniformity between the proposed controller and proportional-integral (PI) controller are analyzed subsequently. The performance of the proposed controller is investigated in both simulation and experimental environment using MATLAB-Simulink and dSPACE digital signal processor board DS1104, respectively, at different operating conditions for a laboratory 5 hp motor. It is found that the proposed PCHD controller shows better performance than that of the conventional benchmark tuned PI controller in terms of speed tracking capability with load variations.