A new energy policy for warehousing technology: DSE, DAMBACH Smart Energy Management for rail-guided stacker cranes

Transcription

1 A ew eergy policy for warehousig techology: DSE, DAMBACH Smart Eergy Maagemet for rail-guided stacker craes

2 High dyamics ad less cosumptio: DAMBACH eergy maagemet for rail-guided stacker craes

3 DSE, the DAMBACH Smart Eergy Maagemet system for rail-guided stacker craes, cosiderably improves the ecoomics of a automated warehousig system. Rail-guided stacker craes are therefore much more efficiet ad achieve that without a loss i performace. Peak currets from the mais reduced by a factor of five Smaller mais supply poits ad eergy ifrastructure Reduced eergy cosumptio without complicated feedig ito the mais No idle power compesatio system Automatic compesatio for mais fluctuatios Ca also be retrofitted to some existig cotrols Efficiecy: well-coceived eergy maagemet Beefits: proved i practice Results: much better ecoomics By usig the existig mais supply, railguided stacker craes ca icrease their performace. The additioal eergy eeded for improved performace is gaied from the power caps. The power caps are charged by recoverig eergy from the rail-guided stacker craes as they lower their loads ad/or brake. A smaller mais supply is possible with ew systems. A system equipped with DSE reveals the possibilities: System: 4 stacker craes each 32 m high Year of istallatio: 2015 Goods stored: 1000 kg pallets Performace figures with DSE: Travellig speed 3.5 m/sec Raisig/lowerig speed 1 m/sec Travellig acceleratio 1.2 m/sec 2 Raisig/lowerig acceleratio 0.8 m/sec 2 Curret cosumptio max. 24 A Coected load 16 KW Power caps 361 Wh The eergy balace with DSE speaks for itself. The power peak required from the mais drops to just oe-fifth. The eergy cosumptio is reduced by a third. The mais supply ca be much smaller. The ivestmet costs are lower.

4 The eergy recovered durig brakig ad lowerig is stored i power caps. Feedig eergy back ito the mais is uecessary. This eergy is the made available directly ad efficietly. That improves the degree of efficiecy. High-performace power caps: the basis for efficiet eergy maagemet Power caps are high-performace eergy storage elemets ad form the heart of DAMBACH Smart Eergy Maagemet (DSE). They store the eergy recovered from rail-guided stacker craes while lowerig loads or brakig. This eergy is the used to supplemet eergy from the mais for powerig drive uits. The power caps also provide eergy reserves for power peaks, e.g. while raisig loads ad acceleratig. No eergy is fed back ito the mais. If the power caps caot be fully charged by eergy recovery, the DSE esures rechargig from the mais. Times of low activity i the facility are exploited ad power peaks from the mais avoided. It is also uecessary to cofigure the mais supply hardware to cover brief power peaks. Power caps: a log-stadig, prove system guaratees maximum reliability Years of experiece with the use of power caps to store eergy esure trouble-free, efficiet operatios. Power caps are already used successfully i the DAMBACH shuttle system, where they replace cables or batteries ad costitute the shuttle s eergy supply. I the shuttle, the very fast rechargig time (just 12 secods) of the power caps eable 24-hour workig without chagig the batteries or log dowtimes for rechargig. Furthermore, power caps are very loglastig, zero-maiteace uits. Gree logistics: sustaiability is ot just a tred, istead a importat competitive factor Reducig eergy cosumptio is the challege facig techology ad operatio. For i the ed, cuttig eergy cosumptio is ot oly a issue for operatig costs, but also for the eviromet. But reducig the throughput of a facility is ot the right aswer here. Implemetig DSE i DAMBACH rail-guided stacker craes shows that evirometal thikig ad ecoomic efficiecy are ot mutually exclusive. O the cotrary, they complemet each other. Because DSE ot oly reduces eergy cosumptio, it also maitais curret throughput, ideed ca eve icrease it. The basis for this extra efficiecy is the itelliget sychroisatio ad coectios betwee power caps, eergy recovery ad power supply etwork all brought together i DAMBACH Smart Eergy Maagemet (DSE).

5 Peak currets for eergy supplies Mais supply without DSE Mais supply with DSE from the mais are compesated for. So the hardware eeded for the mais coectio for the facility ca be smaller. The eergy cosumptio is reduced. Power (kw) Power (kw) Time (s) Time (s) Warehouse expasio: DSE optimises the eergy supply Itelliget eergy maagemet: DSE cushios power peaks efficietly Poor eergy ifrastructure: DSE is the reliable aswer Whe expadig existig automated warehouse systems, the existig eergy supply ad subdistributio ofte costitute a bottleeck. It is the ecessary to modify supply ad distributio. That is also the case whe the throughput of a existig system eeds to be improved, whe slow rail-guided stacker craes are to be replaced by faster uits or whe more efficiet drives are to be istalled. I these cases, DSE optimises the eergy supply ad reduces the costs ad the work ivolved. Expadig the eergy system or istallig a additioal eergy system is the ofte uecessary. The eergy stored temporarily i the DSE system is made available for brief power peaks, e.g. for raisig loads ad acceleratig. DSE regulates the rechargig of the power caps either from eergy recovery or from the mais durig times of low activity as well as the bufferig of the eergy. The mais istallatios otherwise ecessary for power peaks are therefore uecessary. Istallatios already i place ca be used for additioal equipmet or to improve performace. If DSE is cosidered right from the start whe plaig a ew system, the effect of the smaller mais supply is especially efficiet. Eve if there is a poor eergy ifrastructure at the locatio or the mais is oly desiged for low power peaks ad is proe to failure, efficiet warehouses eed good power supplies with good availability. Brief mais failures should ot lead to malfuctios ad voltage peaks must be smoothed out. Ad if the mai supply fails completely, the all equipmet must come to a cotrolled stop. Through smart rechargig of the power caps, partly from the mais, partly from eergy recovery, the peak curret take from the mais is reduced by a factor of five ad without this havig a egative effect o warehouse throughput. The recovered eergy is ot fed back ito the mais, istead is reused locally. There is o eed for complicated mais sychroisatio ad the associated hardware. That improves the degree of efficiecy, which i tur improves the eergy balace. Eergy cosumptio is cut by a third.

6 DAMBACH Lagersysteme GmbH & Co. KG Hardrai Bischweier Germay Tel: +49 (0) Fax: +49 (0) ifo@dambach-lagersysteme.de Subject to chage without prior otice