In this paper, a new field oriented control scheme with maximum torque for PERMANENT MAGNET HYSTERESIS synchronous (PMHS) MOTOR has been presented. Vector control method provides significant improvement to the dynamic performance of ac MOTORs but in this method d- axis current is controlled such as the ratio of MOTOR torque to MOTOR current is a maximum, then the dynamic performance will be very fast. Furthermore, d and q axis currents are limited such as stator winding currents remain in the allowed range. Feedback method is used for the decoupling the torque-current component from the flux current component so these two components can be independently controlled. Simulation results for the MOTOR are given and test results validate the theoretical performances.

Hunting is a flutter associated with the synchronous speed that gives rise to the gyro drifting errors and may cause objectionable time-displacement errors in video head wheel drives and other precision scanning systems. In this paper, dynamic characteristics of PERMANENT MAGNET HYSTERESIS MOTORs are presented and hunting is explained. New damping techniques have been developed using optimized eigenvalues calculation. They are calculated from LQR optimization method. In this damping method, a distinct reduction in hunting has been archived. Furthermore field oriented control result of MOTOR is presented that have good effect on Hunting. Nearest agreement between simulated and measurement results shows the accuracy of MOTOR model. Comparison between this paper results and other measured damping methods result are shown its success.

In this paper a sliding mode controller (SMC) is designed for a PERMANENT MAGNET ‎direct current (PMDC) MOTOR to enhance the MOTOR performance in the presence of ‎unwanted uncertainties. Both the electrical and mechanical signals are used as the ‎inputs to the SMC. The complete MOTOR control system is simulated on a personal ‎computer with different design parameters and desirable system performance is ‎obtained. The experimental implementation of the MOTOR control system by a floating ‎point DSP is also presented. The test results confirm the simulation results and ‎validate the proposed MOTOR control system for high performance applications‏.‏

The Brushless DC (BLDC) MOTOR is a simple robust machine which has found application over a wide power and speed of ranges in different shapes and geometry. This paper briefly reviews the fundamentals behind the MOTOR and also the different types of BLDC MOTORs with different geometries and then presents a new configuration for BLDC MOTOR/generator, which does not use a PERMANENT MAGNET in the rotor. The proposed novel MOTOR/generator consists of two MAGNETically dependent stator and rotor sets (layers), where each stator set includes nine salient poles with windings wrapped around them while, the rotor comprises of six salient poles. The MAGNETic field passes through a guide to the rotor then the stator and finally completes its path via the MOTOR housing. This is a three phase MOTOR/generator and every stator and rotor pole arcs are about 30o. A new power electronic converter is also presented. This topology provides bidirectional control of the current for each MOTOR phase independently. This control scheme permits the MOTOR to operate with any number of phases at any time. In this converter, four power switches in the form of a bridge connection for each MOTOR phase has been utilized therefore, the MOTOR can operate by switching different sequences for the current direction in each MOTOR phase windings and also offers the choice of having any number of phases to be on at any time. A proto-type MOTOR/generator and the drive circuit have been built and tested in the laboratory and the numerical and experimental results are presented. Due to the ruggedness of the proposed MOTOR/generator in comparison with the conventional and brushless dc MOTORs used for automobile applications, this unit looks very promising for use as an integrated MOTOR generator for hybrid vehicle.