In 2000 the UK Ministry of Defence (MoD) placed a contract on Turbomeca Limited to develop a 1.8 MW advanced cycle gas turbine alternator that could compete directly with comparable diesel generators in terms of performance and cost. The Advanced Cycle Low power Gas Turbine Alternator (ACL GTA) has been designed with simplicity in mind and utilises a revolutionary high-speed alternator and heat recuperator to realise the project aspirations. Development and evaluation testing commenced on this engine in 2004 at Turbomeca’s facility in Pau. This paper will provide a brief overview of the design of the complete gas turbine alternator concentrating on innovative characteristics. It will then continue by presenting in detail the component testing and data obtained followed by system testing results of the gas turbine and gas turbine alternator. Conclusions will be drawn detailing the benefits and suitability of this novel gas turbine alternator within modern Naval platforms and some comparisons with in-service diesel generators.

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