Designing and Prototyping Automatic Synchronizers for Paralleling of Alternators

Abstract

Automatic synchronizers assure that a generator attempting to parallel with the utility electric system can do so without causing an electrical disturbance to other customers and facilities connected to the same system. Thus there is a need of autosynchroniser in a power station or in an industrial establishment where generators are employed. This paper describes a prototype set up for small capacity synchronizing three phase alternators. Hence, the performance of designed circuits for data acquisition and control is discussed. Further, in order to satisfy the mandatory conditions for paralleling of alternators with a typical range of accuracy, various algorithms for computation and control are also developed.