Multivariable H Robust Controller for a Permanent Magnet Synchronous Machine (PMSM)
Journal Title: International Journal on Computer Science and Engineering - Year 2015, Vol 7, Issue 3
Abstract
Analytical modeling of the PMSM often involves many simplifying assumptions. The model thus obtained is a model where the physical phenomena and dynamics are neglected during the identification of the process such that the saturation of the magnet circuit and the skin effect. However, the variation of stator resistances, cyclic inductances and moment of inertia due to the temperature and extensive use induce a difference between the process and the nominal mathematical model. Besides since the load torque is external disturbance that can affect the PMSM model, the traditional methods (Bode, Nyquist design…) fail to satisfy stability and robust performance. To solve this problem, a robust multivariable H infinity controller is used seeing that the desired performance can be merged in the design phase as performance weights. The effectiveness of the proposed controller is applied for the speed tracking during load changing of a PMSM fed by voltage inverter through experimental study.
Authors and Affiliations
J. Khedri , M. Chaabane , M. Souissi
Keywords
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