September 2010

Permanent magnet flux estimation method of vector control SPMSM using adaptive identification

The variation of permanent magnet flux deteriorates the performance of a torque controlled (TC) system. Without the torque sensor, the magnet flux information is indispensable for controlling the torque of the surface permanent magnet synchronous motor (SPMSM) with vector control. The magnet flux depends on variations of temperature inside of the motor. With the increase of stator winding temperature, the magnet...

Author(s): Abdoulaye M’bemba Camara, Yosuke Sakai and Hidehiko Sugimoto

September 2010

Comparison performance evolution of different transmission techniques with bi-directional distributed Raman gain amplification technique in high capacity optical networks

In the present paper, we have modeled parametrically the comparison performance evolution of different transmission techniques such as maximum time division multiplexing (MTDM) technique, and soliton technique with bi-directional Raman amplification technique in high capacity optical communication networks over wide range of the controlling parameters. Moreover, we have analyzed and investigated the soliton and MTDM...

Author(s): Abd El–Naser A. Mohammed and Ahmed Nabih Zaki Rashed