This study presents the multiple energy storage elements usability for ships using a passive hybrid topology. The considered hybridisation is based on a passive parallel topology connecting NiMH batteries and SuperCapacitors to a DC power distribution by a bidirectional DC/DC converter. The overall propulsion architecture is a hybrid series system where an engine–generator group is the main energy source and the multiple energy storage system (ESS) answer the intermittent power demanded by the on-board loads. First, the multiple ESS is sized using voltages, storage elements’ characteristics, and typical power demand profile. Thereafter, a control scheme of this hybridisation is deduced through a cascade of current and voltage linear controllers. The energy management strategy based on the stability of the DC power distribution voltage and the inherent storage elements’ characteristics is fully addressed in order to reduce weight and space on-board, fuel consumption, pollution, and optimise the global efficiency. Experimental results show that the engine–generator fulfil a constant power, meanwhile the multiple ESS stabilises the DC-link voltage with unknown power demand profile. The effectiveness of the proposed passive hybrid topology with reduced control layer complexity based on the DC-link voltage stabilisation as an energy management strategy is validated.
Hybrid electric excursion ships power supply system based on a multiple energy storage system
IET Electrical Systems in Transportation ; 6 , 3 ; 190-201
2016-09-01
12 pages
Aufsatz (Zeitschrift)
Elektronische Ressource
Englisch
electric current control , hybridisation control scheme , current linear controller , pollution reduction , reduced control layer complexity , energy management strategy , energy management systems , power distribution economics , nickel compounds , pollution control , ships , bidirectional DC-DC converter , weight reduction , unknown power demand profile , power demand profile , NiMH batteries , supercapacitors , passive parallel topology , space on-board reduction , linear systems , hybrid power systems , secondary cells , DC-link voltage , power system stability , power consumption , global efficiency optimisation , passive hybrid topology , hybrid electric excursion ship power supply system , marine power systems , voltage linear controller , voltage control , fuel economy , DC-DC power convertors , DC power distribution voltage stability , diesel engines , diesel-electric generators , multiple ESS , supercapacitor , fuel consumption reduction , multiple energy storage system , demand side management , diesel engine-generator group
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