This paper deals with torque ripples, Permanent magnet synchronous motors are widely used in high performance applications.This paper reviews a controller based design techniques. Controller based techniques for minimizing torque ripples involve the use of algorithms. Finally, successful suppression of pulsating torque relies on the systems approach to all aspects of the PMSM.

Accurate computing of the saturated inductances of Permanent Magnet Synchronous Machine (PMSM) is very important during the design process. In this paper, a new method is presented based on the B-H characteristic of the stator material and unsaturated inductances formulations. This method is used to calculate the saturated inductances of the axial flux PMSM. The synchronous inductance and all o...

An adaptive fuzzy control method is developed to control chaos in the permanent magnet synchronous motor drive system via backstepping. Fuzzy logic systems are used to approximate unknown nonlinearities, and an adaptive backstepping technique is employed to construct controllers. The proposed controller can suppress the chaos of PMSM and track the reference signal successfully. The simulation r...

In this paper, we present a new contribution of FPGAs (Field-Programmable Gate Array) for control of electrical machines. A detailed description of the structure of direct torque control for PMSM drive, a bench test was realized by a prototyping platform, the experimental results obtained show the effectiveness and the benefit of our contribution and the different steps of implementation for th...

As to the model predictive control for five-phase permanent magnet synchronous motor (PMSM), it is difficult ensure optimal performance by using calculation method obtain weighting factor. To solve this problem, a cascade current based on idea of sequential proposed PMSM first time. Firstly, principle selecting voltage vector analyzed in detail. Then, combined with characteristics PMSM, priorit...

The ratio of torque to copper loss can be increased by injecting third-harmonic current into five-phase permanent-magnetic synchronous motor (PMSM). Accurate flux linkage information is indispensable in the process calculating reference corresponding maximum torque/copper ratio. In harsh working environments, will deviate from initial measured value, resulting deviation between and point. There...

This paper proposes a method to improve the output torque of six-phase permanent-magnet synchronous machine (PMSM) within same current peak limit through fifth-harmonic injection into each phase stator. Compared fifth + seventh-harmonic current-injection used PMSM, control system can be stably controlled, and controller design complexity decreased. is because harmonic component was converted di...

The permanent magnet synchronous motor (PMSM) is a highly efficient energy saving machine. Due to its simple structural characteristics, good heat radiation capability, and high efficiency, PMSMs are gradually replacing AC induction motors in many industrial applications. PMSM has nonlinear system lies on parameters that differ over time with complex high-class dynamics. To achieve the excessiv...