An effort to formulate frequency modulation constraints in ship-electrical systems with pulsed loads

Kanellos, FD; Tsekouras, GJ; Prousalidis, J; Hatzilau, IK

dc.contributor.author	Kanellos, FD	en
dc.contributor.author	Tsekouras, GJ	en
dc.contributor.author	Prousalidis, J	en
dc.contributor.author	Hatzilau, IK	en
dc.date.accessioned	2014-03-01T02:01:44Z
dc.date.available	2014-03-01T02:01:44Z
dc.date.issued	2011	en
dc.identifier.issn	20429738	en
dc.identifier.uri	https://dspace.lib.ntua.gr/xmlui/handle/123456789/29234
dc.subject.other	Critical parameter	en
dc.subject.other	Design tool	en
dc.subject.other	Electric systems	en
dc.subject.other	High-power	en
dc.subject.other	Mathematical expressions	en
dc.subject.other	Modulation phenomena	en
dc.subject.other	Power supply quality	en
dc.subject.other	Pulsed load	en
dc.subject.other	Pulsed loading	en
dc.subject.other	Ship electric power systems	en
dc.subject.other	Simulation model	en
dc.subject.other	Theoretical explanation	en
dc.subject.other	Circuit theory	en
dc.subject.other	Computer simulation	en
dc.subject.other	Electric loads	en
dc.subject.other	Frequency modulation	en
dc.subject.other	Sensitivity analysis	en
dc.subject.other	Ships	en
dc.title	An effort to formulate frequency modulation constraints in ship-electrical systems with pulsed loads	en
heal.type	journalArticle	en
heal.identifier.primary	10.1049/iet-est.2010.0050	en
heal.identifier.secondary	http://dx.doi.org/10.1049/iet-est.2010.0050	en
heal.publicationDate	2011	en
heal.abstract	One of the most significant power supply quality problems in ship electric networks is 'frequency modulation'. This is a phenomenon most frequently met in extensively electrified ships and it is caused by the operation of certain electric loads, known as 'pulsed loads', which require high power repeated on a regular or random basis. To the best of the authors' knowledge, no well-based theoretical analysis of the phenomenon exists in the literature, although any existing constraints limiting the operation of pulsed loads are not properly explained in the respective standards. Hence, in this study, an effort is made, first to establish a theoretical explanation of the modulation phenomenon via an analytical mathematical expression comprising all the critical parameters that affect it, and then highlight the appropriate procedure of setting limits via standards. In this way, the frequency modulation is expressed as a function of several parameters of the ship electric system. Furthermore, using the obtained expression, a sensitivity analysis of the particular effect of each of these system parameters is made. The proposed method is a useful design tool for ship electric power systems enabling the assessment of acceptable pulsed loading level without the need of complicated simulation models comprising many parameters usually not readily available. © 2011 The Institution of Engineering and Technology.	en
heal.journalName	IET Electrical Systems in Transportation	en
dc.identifier.doi	10.1049/iet-est.2010.0050	en
dc.identifier.volume	1	en
dc.identifier.issue	1	en
dc.identifier.spage	11	en
dc.identifier.epage	23	en