Open AccessHybrid electric excursion ships power supply system based on a multiple energy storage system
Author(s) -
Trovão João P.,
Machado Felipe,
Pereirinha Paulo G.
Publication year - 2016
Publication title -
iet electrical systems in transportation
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.588
H-Index - 26
ISSN - 2042-9746
DOI - 10.1049/iet-est.2015.0029
Subject(s) - energy storage , voltage , engineering , power (physics) , topology (electrical circuits) , supercapacitor , automotive engineering , power management , electrical engineering , chemistry , physics , electrode , quantum mechanics , electrochemistry
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.