DESIGN AND EXPERIMENTAL EVALUATION OF A PARALLEL OPERATION OF 2X MOBILE DG’S WITH DIFFERENT RATINGS

Abstract

The mobile diesel generators are common place in construction, mining, disaster recovery and remote operation and any industry where the required load cannot be achieved by generator and therefore, the operation requires parallel operation. Multi-generation systems have the advantages of capacity increment, enhanced reliability, and fuel efficiency. Similar operation of DGs with varying ratings is also a challenge especially in synchronization and load sharing. Synchronization is to make sure that voltage, frequency and phase angle are similar prior to interconnection. The sharing of the load between unequal generators should be carefully controlled to avoid overloading smaller generators and underexploiting larger ones.Conventional techniques tend to assume that the rating of generators is identical, so they cannot be used in mixed arrangements.