Design And Analysis Of Synchronous Machine (Alternator)

Abstract

Today most of the electrical power in the world is generated by synchronous machine (alternator). Regarding to cost, durability, stability and security; a design of syn- chronous machine is very important. The reliability of power system and quality of power can also be improved by improving the performance. The performance can be improved by proper design of synchronous machine. Various constrains like processes, availability of magnetic material, quality aspects and cost aspects are considered dur- ing the manufacturing of the synchronous machine. By using advance technology and power of the computer software, the design and performance of the synchronous machine is improved. In practical design, a number of designed parameter of the machine is so high such that hand calculation is so tough and takes a long time. To satisfy all constrain and get realistic design, an iterative approach is required.This can be done by computer programming. Flowcharts for analytical calculations of de- sign parameters are developed for computer programming. The selection of magnetic material decides the iron losses of synchronous machine and hence, it is an important parameter by which e ciency can be improved. Synchronous machine is designed with the di erent number of stator slots to getting optimum and realistic design by comparing with the manufacturing company. After getting the optimum and realistic design, the designed parameters are implemented to the MAGNET software(V.6.16) for nite element analysis. Static, time harmonic and transient analysis are carried out by MAGNET software. Further,design is veri ed by the matching the analyt- ically calculated parameters with the result of MAGNET software. Reactance of the synchronous machine under the various condition are calculated by the result of MAGNET software.