State Feedback Controller Stratagem for Permanent Magnet Synchronous Motor Drive

Recently Permanent-Magnet Synchronous Motor (PMSM) drives has be expanding in hybrid electric vehicles for high dynamic applications. This article presents three-level & five-level Diode Clamped (DC) Multilevel dc to ac converter using varieties of Multicarrier PWM strategies. All those various strategies are discussed briefly and also give performance comparisons and THD comparisons of different closed loop control schemes. Mathematical modeling of Multi level dc to ac converter coupled Permanent-Magnet Synchronous Motor was described in this concept. Usually, PMSM drive operates at broad operating regions and rapid transients; linearization techniques and linear control methods are required to investigate non-linear models like a DC/AC converter fed electric drive, so it exhibits some limitations. In this article, Non-linear controller strategy is proposed for cancellation of system non-linearity. Pole placement technique in state feedback controller method is proposed in this concept to achieve superior dynamic performance of PMSM drive fed from Multi Level Multi Carrier Sinusoidal pulse width modulation converter. To obtain much performance of three-level & five-level Diode Clamped (DC) Multilevel dc to ac converter coupled PMSM drive, consequently state feedback controller was designed. By analyzing varieties of Multicarrier PWM strategies, this article proves that Alternate Phase opposition disposition sinusoidal PWM for five-level inverter gives better output voltage waves shapes with Less Total Harmonics and it gives smooth stator and damper winding currents of D-Q axis and settled with finite value in steady state conditions. Closed loop control stratagem for different levels with DC strategy was developed and compared with all those different schemes is tremendously simulated using MATLAB.