Parallel Operation of 2x Mobile DG’s With Different Ratings

Abstract

Mobile diesel generators (DGs) are widely used in industries such as construction, mining, disaster recovery, and remote operations to provide immediate power where grid access is unavailable. In many cases a single generator cannot meet the required load, making parallel operation necessary. Operating generators in parallel offers benefts like increased capacity, improved reliability, and better fuel efficiency. Parallel operation of DGs with different ratings presents challenges, particularly in synchronization and load sharing. Synchronization ensures that voltage, frequency and phase angle match before interconnection. Load sharing between unequal generators requires precise control to prevent overloading smaller units and underutilizing larger ones. Traditional methods often assume identical ratings, making them unsuitable for mixed setups. This project develops a system for parallel operation of two DGs with different ratings advanced synchronization and load sharing strategies. The design includes synchronization panels, controllers, and measurement instruments. Testing under various load conditions confirmed smooth synchronization, accurate load sharing and improved fuel efficiency. In conclusion, this project provides a practical solution for industries relying on mobile power sources. Future enhancements may include renewable integration, intelligent controllers for dynamic load management, and grid-tied hybrid systems. i