Divided-Winding-Rotor Synchronous Generator Analytical Study of the No-Load Field Distribution.

Document Type : Research Studies

Author

Assistant Professor, Electrical Power & Machines Department, Faculty of Engineering, Mansoura University, Mansoura, Egypt.

Abstract

This paper presents an analytical  study of the resultant m.m.f. distributions in the air-gap of a divided-winding-rotor synchronous generator. For linear analysis, the principle of superposition can be applied to obtain these distributions graphically. The study makes use of the no-load field control factors to obtain the actual per-unit maximum values of both field components while the resultant field is shifted in steps w.r.t. the rotor. The obtained wave forms exhibits the possibility of summarizing then in a group of representative wave forms which enable us to study the effect of shift-angle, as well as well as the pole winding spread , on the resultant m.m.f. the m.m.f. distributions obtained experimentally, are compared with those analytically obtained. The results show that they are in good agreement. The conditions required to simulate the conventional field distribution by a divided-winding-rotor are stated and discussed.

Main Subjects