Three-Phase Synchronous Generators Performance with Unbalanced and Non-Linear Loading - Analytical and Experimental Analysis

Abstract

This paper aims at investigating electrical and mechanical performance of three-phase salient pole synchronous generator with unbalanced and non-linear loading. The time domain technique is employed to represent the three-phase synchronous generator. By studying the generator operation with nonideal AC load conditions, the machine electrical and mechanical impacts caused by unbalances and harmonics are evaluated and discussed. Besides theoretical studies, experimental results obtained from a 2kVA three-phase prototype were derived so as to validate the computational approach and conclusions. Finally, by using a real size generator of 25MVA, more realistic results are computationally achieved and discussed.I.

A Study of the Impacts Caused by Unbalanced Voltage (2%) in Isolated Synchronous Generators

“…The CIGRÉ method provides the same results as those from the symmetrical components method (VUF), using a series of algebraic manipulations to express the unbalance from the line voltage modules [22], as shown in equations (6) and (7).…”

“…A study of the synchronous generator under a nonsinusoidal and asymmetric regime is presented in [7]. However, no mention is made as to the electromagnetic The associate editor coordinating the review of this manuscript and approving it for publication was Yuh-Shyan Hwang.…”