As members of doubly salient magnetless linear machines, variable flux reluctance (LVFR) and wound field reversal (LWFFR) machines inherit the merits conventional such as low cost, high adjustment capability reliability. Furthermore, like switched machine, they have a very simple compact long secondary, which are attractive for stroke applications. However, force is their major defect. To solve...

A new structure of linear transverse flux machine (TFM) is presented in this paper. It is in fact a variable reluctance linear machine having permanent magnets on the mover. Its structure and its working principle will be discussed. After a preliminary design of the motor a 3D FEM analysis was carried out before optimizing the designed linear motor. The flux densities in the machine and the sta...

It was recently presented that the Reluctance Synchronous Motor (RSM) is well suited for variable gear electric as well as for hybrid electric vehicles. This paper deeply investigates the capabilities of a Reluctance Synchronous Motor and proposes a multi parameter estimation scheme for Reluctance Synchronous Motor under variable-speed control. The proposed control evaluation model is fully eff...

The Electrically Excited Doubly Salient Variable Reluctance Machine (EEDSVRM) is a new type of brushless machine designed according to the principle air gap reluctance change. There neither permanent magnet steel nor excitation winding on rotor. rotor made silicon sheets, thus structure variable very simple. are many optimization methods for this optimal design, such as novel topology optimizat...

This paper describes the optimum design of a permanent-magnet-assisted reluctance rotor of a 110 kW reluctance synchronous traction machine. Previous studies show that the performance of the pure reluctance synchronous machine drive deteriorates fast in the flux-weakening speed region. To address this problem, thin bonded permanent-magnet sheet material is used inside the flux barriers of the r...

The use of lithography and electroplating to fabricate variable-reluctance, nearly planar, integrated minimotors with 6-mm-diameter rotors on silicon wafers is described. The motors consist of six electroplated Permalloy@ horseshoe-shaped cores that surround the rotor. Copper coils are formed around each core. The Permalloy and copper electroplating baths, electroplating seed layers, and throug...

In this paper, the concept and implementation of field-orientation control (FOC) of a doubly excited brushless reluctance machine (DEBRM) for variable-speed drives and generating systems are presented. A stator-flux-orientation scheme is employed to achieve decoupled control of torque and reactive power. A 2-hp DEBRM prototype system with a digital signal processor (DSP)-based controller and a ...

Heat transfer is a critical aspect related to Electrical machine design. To insure a successful design of the electrical machine, special attention has to be given to thermal aspects in parallel with the traditional Electromagnetic design. For calculating the temperature rise in electrical systems such as electrical machines or power electronic systems it is important to measure the temperature...