How to increase EDG´s reliability and performance while reducing space requirement on FPSO/FLNG

In offshore installations, there is more and more focus on reliability of electrical power to manage safety-related control functions, which must be always available and run all the time. Back-up power systems based on emergency gen-sets are designed to ensure this continuity of operation, even in case of loss of the main electrical power. Specially in view to the present development of larger FPSO and FLNG units, an essential criteria is to ensure this increased emergency power requirement as well as improve reliability, while optimizing weight and dimensions of equipments. The aim of this paper is to present solutions for the optimal design of emergency diesel generators, taking into account cooling system options, insulation and temperature rise, and the different technologies for excitation and AVR. In other terms, how to increase EDG performance and reliability while reducing weight and space requirement.