{"id":7258,"date":"2022-07-19T18:30:30","date_gmt":"2022-07-19T16:30:30","guid":{"rendered":"https:\/\/onload.reinhausen.com\/de\/?p=7258"},"modified":"2023-10-17T15:50:07","modified_gmt":"2023-10-17T13:50:07","slug":"alternating-mood","status":"publish","type":"post","link":"https:\/\/onload.reinhausen.com\/en\/08-2022\/alternating-mood\/","title":{"rendered":"Alternating mood"},"content":{"rendered":"\n<hr class=\"wp-block-separator has-alpha-channel-opacity\">\n\n\n\n<p><span class=\"initial\">A<\/span>t the very begin\u00adning of glob\u00adal elec\u00adtri\u00adfi\u00adca\u00adtion, there was a dis\u00adagree\u00adment. Thomas Alva Edi\u00adson, best known as the inven\u00adtor of the light bulb, was con\u00advinced that direct cur\u00adrent grids were the best way to sup\u00adply peo\u00adple with elec\u00adtric\u00adi\u00adty. For his oppo\u00adnent George West\u00ading\u00adhouse, engi\u00adneer and entre\u00adpre\u00adneur, it was clear that alter\u00adnat\u00ading cur\u00adrent was bet\u00adter suit\u00aded for trans\u00admit\u00adting elec\u00adtri\u00adcal ener\u00adgy. And thus at the end of the 19th&nbsp;cen\u00adtu\u00adry a com\u00adpe\u00adti\u00adtion about the future stan\u00addard began. In the end, West\u00ading\u00adhouse famous\u00adly pre\u00advailed: Thanks to the trans\u00adformer, it was much more cost-effec\u00adtive to trans\u00adport alter\u00adnat\u00ading cur\u00adrent over long dis\u00adtances. But could Edi\u00adson still in fact win in the end? Today, a good 130&nbsp;years lat\u00ader, it appears that direct cur\u00adrent grids could make a comeback\u2014albeit on a small\u00ader scale for now.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">Solar energy is on the rise<\/h2>\n\n\n\n<p>The ener\u00adgy tran\u00adsi\u00adtion makes it pos\u00adsi\u00adble and also nec\u00ades\u00adsary. To stop glob\u00adal warm\u00ading, activ\u00adi\u00adties are increas\u00ading world\u00adwide to pro\u00admote phas\u00ading out fos\u00adsil fuels and replac\u00ading them as quick\u00adly as pos\u00adsi\u00adble with renew\u00adable sources. Already today, about 50&nbsp;per\u00adcent of the elec\u00adtric\u00adi\u00adty pro\u00adduced in Ger\u00admany comes from solar or wind pow\u00ader plants. And if the cur\u00adrent Ger\u00adman gov\u00adern\u00adment has its way, a total of 300&nbsp;gigawatts will come from renew\u00adable ener\u00adgies by 2035, with a large part of it from solar ener\u00adgy.<\/p>\n\n\n\n<p>The Fraun\u00adhofer Insti\u00adtute for Solar Ener\u00adgy Sys\u00adtems in Freiburg has cal\u00adcu\u00adlat\u00aded that Ger\u00admany the\u00ado\u00adret\u00adi\u00adcal\u00adly has enough sur\u00adface area to gen\u00ader\u00adate 3,160&nbsp;gigawatts of solar pow\u00ader, and 400&nbsp;gigawatts would already be suf\u00adfi\u00adcient to make gas, oil, coal and nuclear pow\u00ader super\u00adflu\u00adous. Whether the fed\u00ader\u00adal government\u2019s goals will be met on time is uncer\u00adtain. But time is press\u00ading, because demand is simul\u00adta\u00adne\u00adous\u00adly on the rise due to con\u00adsumers such as elec\u00adtric vehi\u00adcles and heat pumps, which explic\u00adit\u00adly require direct cur\u00adrent. And to con\u00adstant\u00adly meet dai\u00adly demand despite volatile pow\u00ader gen\u00ader\u00ada\u00adtion from wind and solar, more and more bat\u00adtery stor\u00adage sys\u00adtems will be need\u00aded.<\/p>\n\n\n\n<blockquote class=\"wp-block-quote is-layout-flow wp-block-quote-is-layout-flow\"><div class=\"wp-block-image\">\n<figure class=\"alignright is-resized\"><img decoding=\"async\" src=\"https:\/\/onload.reinhausen.com\/de\/wp-content\/uploads\/sites\/25\/2022\/07\/Stephan_Rupp_web.jpg\" alt class=\"wp-image-7479\" style=\"object-fit:cover;width:150px;height:150px\"><\/figure>\n<\/div>\n\n\n<p>\u201cIn total, 12 per\u00adcent of green ener\u00adgy goes unused. Tech\u00adno\u00adlog\u00adi\u00adcal\u00adly and eco\u00adnom\u00adi\u00adcal\u00adly, that is com\u00adplete\u00adly inef\u00adfi\u00adcient.\u201d<cite>Stephan Rupp, grid expert at Rein\u00adhausen<br><\/cite><\/p>\n<\/blockquote>\n\n\n\n<p>What they all have in com\u00admon is that they are DC sys\u00adtems. Until now, how\u00adev\u00ader, they have each been con\u00adnect\u00aded to the AC grid via an invert\u00ader. Stephan Rupp, grid expert and busi\u00adness devel\u00adop\u00ader at Rein\u00adhausen, who is work\u00ading close\u00adly on the future of pow\u00ader grids, explains: \u201cTech\u00adni\u00adcal\u00adly and eco\u00adnom\u00adi\u00adcal\u00adly, this is com\u00adplete\u00adly inef\u00adfi\u00adcient.\u201d<\/p>\n\n\n\n<p>An exam\u00adple will illus\u00adtrate this: When the sun shines at noon, solar pow\u00ader sys\u00adtems pro\u00adduce the most elec\u00adtric\u00adi\u00adty. How\u00adev\u00ader, the great\u00adest demand occurs in the evening hours, when peo\u00adple come home from work and charge their elec\u00adtric vehi\u00adcles, for exam\u00adple. There\u00adfore, the mid-day elec\u00adtric\u00adi\u00adty ends up in bat\u00adtery stor\u00adage sys\u00adtems in the mean\u00adtime. Real\u00adly a sen\u00adsi\u00adble con\u00adcept.<\/p>\n\n\n\n<p>But the path from the gen\u00ader\u00ada\u00adtor to the con\u00adsumer is cur\u00adrent\u00adly still quite cir\u00adcuitous: From the solar-pow\u00ader sys\u00adtem, the elec\u00adtric\u00adi\u00adty first goes to the AC grid, from there to the bat\u00adtery stor\u00adage sys\u00adtem, then back to the AC grid, until it final\u00adly reach\u00ades the charg\u00ading sta\u00adtion. In oth\u00ader words, the elec\u00adtric\u00adi\u00adty will already have four con\u00adver\u00adsion stages behind it before it charges the vehi\u00adcle bat\u00adtery. \u201cAt every stage, there are loss\u00ades of at least 3&nbsp;per\u00adcent. So in total, 12&nbsp;per\u00adcent of green elec\u00adtric\u00adi\u00adty goes unused,\u201d says Rupp. Wouldn\u2019t it be much eas\u00adi\u00ader if we could sim\u00adply draw direct cur\u00adrent direct\u00adly from the pow\u00ader sock\u00adet?<\/p>\n\n\n\n<div class=\"wp-block-group alignwide\"><div class=\"wp-block-group__inner-container is-layout-constrained wp-block-group-is-layout-constrained\"><div class=\"hotspot-container\" data-slideshow=\"false\" data-slideshowdelay=\"5000\" data-autohide=\"false\" data-autohidedelay=\"1000\" data-loop=\"true\" data-triggerby=\"mouseover\" data-sticky data-clickimageclose=\"true\" data-dropinease=\"true\" data-displayvideo=\"false\" data-customicon><div class=\"popover right\" data-easein=\"cardInTop\" data-easeout=\"cardOutTop\" data-width data-top=\"552\" data-left=\"378\" data-direction=\"right\" style=\"display:none\" data-style>\n\t\t\t\t\t\t    <div class=\"cq-arrow\"><\/div>\n\t\t\t\t\t\t    <div class=\"popover-inner\"><h4 class=\"popover-title\">INDUSTRIAL PLANTS<\/h4><div class=\"popover-content\">\n\t\t\t\t\t\t        <p>A DC grid in an indus\u00adtri\u00adal plant has sev\u00ader\u00adal advan\u00adtages: The solar pow\u00ader from the fac\u00adto\u00adry roof can be used to sup\u00adply the elec\u00adtric dri\u00adves direct\u00adly and avoid con\u00adver\u00adsion loss\u00ades. In addi\u00adtion, the brak\u00ading ener\u00adgy pre\u00advi\u00adous\u00adly dis\u00adsi\u00adpat\u00aded by the machines can be fed back into the grid. The stan\u00addards for this are being defined in the DC Indus\u00adtry project. <\/p>\n\t\t\t\t\t\t      <\/div>\n\t\t\t\t\t\t    <\/div>\n\t\t\t\t\t\t  <\/div><a href=\"#\" class=\"info-icon icon1\" data-top=\"552\" data-left=\"378\" data-link data-target=\"_self\" style=\"display:none;top:-1000px;\"><span class=\"cq-hotspot-label\" style><\/span><\/a><div class=\"info-icon-pulse info-icon-pulse2\"><\/div><div class=\"popover top\" data-easein=\"cardInTop\" data-easeout=\"cardOutTop\" data-width data-top=\"1163.99\" data-left=\"871.992\" data-direction=\"top\" style=\"display:none\" data-style>\n\t\t\t\t\t\t    <div class=\"cq-arrow\"><\/div>\n\t\t\t\t\t\t    <div class=\"popover-inner\"><h4 class=\"popover-title\">SHOPPING CENTERS<\/h4><div class=\"popover-content\">\n\t\t\t\t\t\t        <p>There is a lot of room for solar cells at shop\u00adping cen\u00adters. The elec\u00adtric\u00adi\u00adty pro\u00adduced in this way could be fed direct\u00adly into a local bat\u00adtery stor\u00adage sys\u00adtem via a DC grid and from there into charg\u00ading sta\u00adtions for elec\u00adtric vehi\u00adcles. The Coper\u00adni\u00adcus project ENSURE is test\u00ading DC sta\u00adtions con\u00adnect\u00aded to the AC medi\u00adum volt\u00adage grid.<\/p>\n\t\t\t\t\t\t      <\/div>\n\t\t\t\t\t\t    <\/div>\n\t\t\t\t\t\t  <\/div><a href=\"#\" class=\"info-icon icon1\" data-top=\"1163.99\" data-left=\"871.992\" data-link data-target=\"_self\" style=\"display:none;top:-1000px;\"><span class=\"cq-hotspot-label\" style><\/span><\/a><div class=\"info-icon-pulse info-icon-pulse2\"><\/div><div class=\"popover left\" data-easein=\"cardInTop\" data-easeout=\"cardOutTop\" data-width data-top=\"1320.99\" data-left=\"1375\" data-direction=\"left\" style=\"display:none\" data-style>\n\t\t\t\t\t\t    <div class=\"cq-arrow\"><\/div>\n\t\t\t\t\t\t    <div class=\"popover-inner\"><h4 class=\"popover-title\">RESIDENTIAL AREAS<\/h4><div class=\"popover-content\">\n\t\t\t\t\t\t        <p>A solar stor\u00adage unit in res\u00adi\u00adden\u00adtial areas for inter\u00adme\u00addi\u00adate stor\u00adage of sur\u00adplus solar pow\u00ader is a spe\u00adcial case. It has only one AC con\u00adnec\u00adtion, but can also be expand\u00aded with DC\ncon\u00adnec\u00adtions. This con\u00adcept is being test\u00aded in prac\u00adtice in the FlexNet-Eko project (flex\u00adi\u00adbi\u00adliza\u00adtion of grid oper\u00ada\u00adtion through decou\u00adpled local grids) <a href=\"https:\/\/onload.reinhausen.com\/en\/12-2021\/semiconductors-in-the-grid\/\">(see ONLOAD&nbsp;10)<\/a>.<\/p>\n\t\t\t\t\t\t      <\/div>\n\t\t\t\t\t\t    <\/div>\n\t\t\t\t\t\t  <\/div><a href=\"#\" class=\"info-icon icon1\" data-top=\"1320.99\" data-left=\"1375\" data-link data-target=\"_self\" style=\"display:none;top:-1000px;\"><span class=\"cq-hotspot-label\" style><\/span><\/a><div class=\"info-icon-pulse info-icon-pulse2\"><\/div><div class=\"popover left\" data-easein=\"cardInTop\" data-easeout=\"cardOutTop\" data-width data-top=\"1490.99\" data-left=\"740.995\" data-direction=\"left\" style=\"display:none\" data-style>\n\t\t\t\t\t\t    <div class=\"cq-arrow\"><\/div>\n\t\t\t\t\t\t    <div class=\"popover-inner\"><div class=\"popover-content\">\n\t\t\t\t\t\t        <p><\/p>\n\t\t\t\t\t\t      <\/div>\n\t\t\t\t\t\t    <\/div>\n\t\t\t\t\t\t  <\/div><a href=\"#\" class=\"info-icon icon1\" data-top=\"1490.99\" data-left=\"740.995\" data-link data-target=\"_self\" style=\"display:none;top:-1000px;\"><span class=\"cq-hotspot-label\" style><\/span><\/a><div class=\"info-icon-pulse info-icon-pulse2\"><\/div><img decoding=\"async\" src=\"https:\/\/onload.reinhausen.com\/en\/wp-content\/uploads\/sites\/26\/2022\/08\/Direct-current-on-site_Hotspot_EN.jpg\" class=\"popover-image\"><\/div>\n<\/div><\/div>\n\n\n\n<h2 class=\"wp-block-heading\">Lacking standards for DC technology<\/h2>\n\n\n\n<p>In the future, most of the solar pow\u00ader from roofs and facades will be gen\u00ader\u00adat\u00aded in the low-volt\u00adage grid, i.e., local\u00adly. \u201cCou\u00adpling the DC sys\u00adtems at the low\u00adest volt\u00adage lev\u00adel with\u00adout going through the AC grid would make the most sense,\u201d Rupp says. Such a DC net\u00adwork would also have the advan\u00adtage that the lines could be much thin\u00adner with a slight\u00adly high\u00ader DC volt\u00adage com\u00adpared to AC volt\u00adage, and few\u00ader lines would be need\u00aded. This would reduce the cop\u00adper need\u00aded by about 40&nbsp;per\u00adcent.<\/p>\n\n\n\n<p>\u201cThe solu\u00adtion could ini\u00adtial\u00adly be small, local, low-volt\u00adage DC grids, known as DC micro\u00adgrids,\u201d says Rupp. But norms and stan\u00addards are cur\u00adrent\u00adly lack\u00ading for the nec\u00ades\u00adsary tech\u00adnol\u00ado\u00adgy that these grids require and that would ulti\u00admate\u00adly make them afford\u00adable. Mar\u00adco Stienek\u00ader, Project Man\u00adag\u00ader DC Pow\u00ader Appli\u00adca\u00adtions at Rein\u00adhausen, empha\u00adsizes: \u201cWe need to get to the point where DC tech\u00adnol\u00ado\u00adgy can be used accord\u00ading to the plug-and-play prin\u00adci\u00adple. Only then will direct cur\u00adrent be suc\u00adcess\u00adful.\u201d<\/p>\n\n\n\n<blockquote class=\"wp-block-quote is-layout-flow wp-block-quote-is-layout-flow\">\n<p>\u201cCou\u00adpling the direct cur\u00adrent sys\u00adtems at the low\u00adest volt\u00adage lev\u00adel with\u00adout going through the AC grid would make the most sense.\u201c<cite>Stephan Rupp, Busi\u00adness Devel\u00adop\u00ader, Rein\u00adhausen<br><\/cite><\/p>\n<\/blockquote>\n\n\n\n<p>To research these paths, Rein\u00adhausen is par\u00adtic\u00adi\u00adpat\u00ading in a series of projects. These include the Coper\u00adni\u00adcus pro\u00adject ENSURE (New Ener\u00adgy Grid Struc\u00adtures), fund\u00aded by the Ger\u00adman Fed\u00ader\u00adal Min\u00adistry of Edu\u00adca\u00adtion and Research (BMBF), in which DC sta\u00adtions are being test\u00aded, among oth\u00ader things; the Ger\u00adman Fed\u00ader\u00adal Min\u00adistry of Eco\u00adnom\u00adics and Cli\u00admate (BMWK) project HPC-Prime (High Pow\u00ader Charg\u00ading), which is devel\u00adop\u00ading fast-charg\u00ading columns for DC grids; and the DC-Indus\u00adtry project, which is work\u00ading on DC grids for indus\u00adtri\u00adal appli\u00adca\u00adtions.<\/p>\n\n\n\n<p>Stienek\u00ader, who devel\u00adops the nec\u00ades\u00adsary tech\u00adni\u00adcal solu\u00adtions for DC appli\u00adca\u00adtions at Rein\u00adhausen, empha\u00adsizes: \u201cWe are not start\u00ading from scratch. We already have many years of expe\u00adri\u00adence with pow\u00ader elec\u00adtron\u00adics, invert\u00ader and bat\u00adtery sys\u00adtems. We have a sol\u00adid under\u00adstand\u00ading of sys\u00adtems from the old world, and we know how to trans\u00adform that exper\u00adtise into the new world.\u201d<\/p>\n\n\n<div class=\"wpcmsdev-box\">\n<div class=\"box-content\">\n<h5>REINHAUSEN INSIDE<\/h5>\n<hr>\n<p>Reinhausen\u2019s grid spe\u00adcial\u00adists have already devel\u00adoped ready-to-use, inno\u00adv\u00ada\u00adtive DC solu\u00adtions:<\/p>\n<h5><img loading=\"lazy\" decoding=\"async\" class=\"size-medium wp-image-7501 alignleft\" src=\"https:\/\/onload.reinhausen.com\/de\/wp-content\/uploads\/sites\/25\/2022\/07\/f0395500_gridcon_hpc_en-1-189x300.jpg\" alt width=\"189\" height=\"300\">GRIDCON\u00ae High Power Charger<\/h5>\n<p>The bidi\u00adrec\u00adtion\u00adal charg\u00ading col\u00adumn from Rein\u00adhausen can be con\u00adnect\u00aded direct\u00adly to DC sys\u00adtems and enables fast charg\u00ading of elec\u00adtric vehi\u00adcles with up to 250&nbsp;kW. The inte\u00adgrat\u00aded bidi\u00adrec\u00adtion\u00adal invert\u00ader also han\u00addles the grid con\u00adnec\u00adtion for con\u00adnect\u00aded bat\u00adtery stor\u00adage sys\u00adtems. It also enables bat\u00adtery-pow\u00adered vehi\u00adcles to oper\u00adate as mobile, bidi\u00adrec\u00adtion\u00adal stor\u00adage units in a future Smart\u00adGrid<\/p>\n<h5>GRIDCON\u00ae DC Transformer<\/h5>\n<p>The first elec\u00adtri\u00adcal\u00adly iso\u00adlat\u00aded DC\/DC con\u00advert\u00ader on the mar\u00adket can be used like a reg\u00adu\u00adlat\u00aded AC pow\u00ader trans\u00adformer. This means that DC net\u00adworks of dif\u00adfer\u00adent volt\u00adages and dif\u00adfer\u00adent net\u00adwork types can also be con\u00adnect\u00aded and the load flow can be con\u00adtrolled in a tar\u00adget\u00aded man\u00adner.<\/p>\n<p><img loading=\"lazy\" decoding=\"async\" class=\"aligncenter wp-image-7509\" src=\"https:\/\/onload.reinhausen.com\/de\/wp-content\/uploads\/sites\/25\/2022\/07\/8408083_en-1-e1657812721509.jpg\" alt width=\"400\" height=\"165\"><\/p>\n<h5><img loading=\"lazy\" decoding=\"async\" class=\"alignright wp-image-7506 size-medium\" style=\"margin-right: 31px;\" src=\"https:\/\/onload.reinhausen.com\/de\/wp-content\/uploads\/sites\/25\/2022\/07\/Power-Conversion-System-e1657812913830-211x300.jpg\" alt width=\"211\" height=\"300\">GRIDCON\u00ae Power Conversion System<\/h5>\n<p>The mod\u00adu\u00adlar inverter\/converter sys\u00adtem for DC and AC sup\u00adply in low volt\u00adage enables the cou\u00adpling of direct cur\u00adrent grids with the medi\u00adum volt\u00adage grid in the DC sta\u00adtions.<\/p>\n<\/div>\n<\/div>\n\n\n\n<h2 class=\"wp-block-heading\">DC voltage in the local grid<\/h2>\n\n\n\n<p>pecif\u00adic use cas\u00ades for direct-cou\u00adpled DC sys\u00adtems include shop\u00adping malls and com\u00admer\u00adcial areas. Here, there is plen\u00adty of room for solar pow\u00ader sys\u00adtems on build\u00adings or even above park\u00ading lots. While peo\u00adple are shop\u00adping or work\u00ading in offices, they could charge their elec\u00adtric vehi\u00adcles direct\u00adly with clean solar pow\u00ader. Bat\u00adtery stor\u00adage sys\u00adtems would ensure that this is pos\u00adsi\u00adble even when the sky is cloudy.<\/p>\n\n\n\n<p>But how might such a low-volt\u00adage DC grid work? In prin\u00adci\u00adple, it is very sim\u00adi\u00adlar to an AC grid. Sim\u00adi\u00adlar\u00adly to the local net\u00adwork trans\u00adformer, a DC sta\u00adtion would have to be con\u00adnect\u00aded to the medi\u00adum volt\u00adage. In a sense, it is the heart of the DC grid and tech\u00adni\u00adcal\u00adly func\u00adtions like a con\u00advert\u00ader with a built-in trans\u00adformer, sup\u00adply\u00ading the DC grid with 1,500 volts DC with out\u00adputs of up to 2,000 kilo\u00adwatts.<\/p>\n\n\n\n<blockquote class=\"wp-block-quote is-layout-flow wp-block-quote-is-layout-flow\"><div class=\"wp-block-image\">\n<figure class=\"alignright is-resized\"><img decoding=\"async\" src=\"https:\/\/onload.reinhausen.com\/de\/wp-content\/uploads\/sites\/25\/2022\/07\/Stieneker_sw_web.jpg\" alt class=\"wp-image-7482\" style=\"object-fit:cover;width:150px;height:150px\"><\/figure>\n<\/div>\n\n\n<p>\u201cWe need to get to the<br>point where DC tech\u00adnol\u00ado\u00adgy can be used based on the plug-and-play prin\u00adci\u00adple.<br>Only then will direct cur\u00adrent be suc\u00adcess\u00adful.\u201c<cite>Mar\u00adco Stienek\u00ader, Project Man\u00adag\u00ader DC Pow\u00ader Appli\u00adca\u00adtions at Rein\u00adhausen<br><\/cite><\/p>\n<\/blockquote>\n\n\n\n<p>Rein\u00adhausen has already devel\u00adoped a solu\u00adtion for the DC sta\u00adtions that is cur\u00adrent\u00adly being test\u00aded as part of the ENSURE project: the GRIDCON\u00ae Pow\u00ader\u00adCon\u00adver\u00adsion Sys\u00adtem. \u201cThis is a mod\u00adu\u00adlar AC con\u00advert\u00ader sys\u00adtem for DC and AC sup\u00adply in the low volt\u00adage range,\u201d says Stienek\u00ader. If the DC grid rep\u00adre\u00adsents the exten\u00adsion of an exist\u00ading AC grid, the DC sta\u00adtion could be set up in addi\u00adtion to the local grid trans\u00adformer. In the event of grid fail\u00adures or faults, it is then able to also set up an AC grid from the bat\u00adtery stor\u00adage sys\u00adtems in the DC grid to ensure sup\u00adply. And it can also pro\u00advide AC con\u00adnec\u00adtions in the low volt\u00adage to sup\u00adply AC equip\u00adment. This increas\u00ades sys\u00adtem auton\u00ado\u00admy and the sup\u00adply secu\u00adri\u00adty of the grids.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">The industrial grids of tomorrow<\/h2>\n\n\n\n<p>DC grids also offer enor\u00admous poten\u00adtial for indus\u00adtri\u00adal oper\u00ada\u00adtions. Elec\u00adtric dri\u00adves account for 70&nbsp;per\u00adcent of indus\u00adtri\u00adal elec\u00adtric\u00adi\u00adty con\u00adsump\u00adtion. With\u00adout them, con\u00adtrol\u00adling robots such as those used in the auto\u00admo\u00adtive indus\u00adtry would be impos\u00adsi\u00adble. How\u00adev\u00ader, the fre\u00adquen\u00adcy con\u00advert\u00aders required for pre\u00adcise motor con\u00adtrol also cause con\u00adver\u00adsion loss\u00ades. When con\u00adnect\u00aded direct\u00adly to a DC grid, these would be reduced. In addi\u00adtion, the brak\u00ading ener\u00adgy could be fed back in the form of direct cur\u00adrent and\u2014if the grid is intel\u00adli\u00adgent\u00adly controlled\u2014could direct\u00adly sup\u00adply oth\u00ader sys\u00adtems. Robots, for exam\u00adple, have to brake very fre\u00adquent\u00adly in their sequences of motion. How\u00adev\u00ader, until now, the ener\u00adgy gen\u00ader\u00adat\u00aded in the process has been dis\u00adsi\u00adpat\u00aded in the form of heat. Anoth\u00ader dis\u00adad\u00advan\u00adtage of fre\u00adquen\u00adcy con\u00advert\u00aders is that they gen\u00ader\u00adate dis\u00adrup\u00adtive har\u00admon\u00adics.<\/p>\n\n\n\n<p>If these are elim\u00adi\u00adnat\u00aded, the pow\u00ader sup\u00adply in the plant also becomes more reli\u00adable and pro\u00adduc\u00adtion down\u00adtimes are avoid\u00aded. Over\u00adall, indus\u00adtri\u00adal com\u00adpa\u00adnies can there\u00adfore sig\u00adnif\u00adi\u00adcant\u00adly increase their effi\u00adcien\u00adcy if they set up a DC grid in the plant. Experts esti\u00admate that five&nbsp;per\u00adcent of elec\u00adtric\u00adi\u00adty could be saved in this way.<\/p>\n\n\n<div class=\"wpcmsdev-box\">\n<div class=\"box-content\">\n<h5>A SOCKET FOR DIRECT CURRENT<\/h5>\n<hr>\n<p>If con\u00adsumers based on direct cur\u00adrent could be sup\u00adplied direct\u00adly with direct volt\u00adage, there would be no con\u00adver\u00adsion loss\u00ades.<\/p>\n<p><img loading=\"lazy\" decoding=\"async\" class=\"alignnone wp-image-7781 size-full\" src=\"https:\/\/onload.reinhausen.com\/en\/wp-content\/uploads\/sites\/26\/2022\/07\/a-socket-for-direct-current.jpg\" alt width=\"1024\" height=\"351\" srcset=\"https:\/\/onload.reinhausen.com\/en\/wp-content\/uploads\/sites\/26\/2022\/07\/a-socket-for-direct-current.jpg 1024w, https:\/\/onload.reinhausen.com\/en\/wp-content\/uploads\/sites\/26\/2022\/07\/a-socket-for-direct-current-300x103.jpg 300w, https:\/\/onload.reinhausen.com\/en\/wp-content\/uploads\/sites\/26\/2022\/07\/a-socket-for-direct-current-768x263.jpg 768w\" sizes=\"auto, (max-width: 1024px) 100vw, 1024px\"><\/p>\n<\/div>\n<\/div>\n\n\n\n<h2 class=\"wp-block-heading\">Direct current on all grid levels<\/h2>\n\n\n\n<p>In the future, direct cur\u00adrent trans\u00admis\u00adsion at medi\u00adum-volt\u00adage lev\u00adel is also con\u00adceiv\u00adable. Research projects such as AC2DC, spon\u00adsored by the Ger\u00adman Fed\u00ader\u00adal Min\u00adistry for Eco\u00adnom\u00adic Affairs and Cli\u00admate (BMWK), in which Rein\u00adhausen is work\u00ading togeth\u00ader with the Tech\u00adni\u00adcal Uni\u00adver\u00adsi\u00adty of Dres\u00adden, are already address\u00ading this issue. DC trans\u00adform\u00aders are then need\u00aded to cou\u00adple the dif\u00adfer\u00adent volt\u00adage lev\u00adels togeth\u00ader. Here, too, Rein\u00adhausen has devel\u00adoped an inno\u00adv\u00ada\u00adtive solu\u00adtion with the GRIDCON\u00ae DCT. \u201cThis is an elec\u00adtri\u00adcal\u00adly iso\u00adlat\u00aded DC-DC con\u00advert\u00ader, which in prin\u00adci\u00adple behaves in exact\u00adly the same way as a reg\u00adu\u00adlat\u00aded AC pow\u00ader trans\u00adformer,\u201d explains Stienek\u00ader.<\/p>\n\n\n\n<p>So will there even\u00adtu\u00adal\u00adly only be direct cur\u00adrent com\u00ading out of the sock\u00adet at home? Grid expert Rupp doesn\u2019t think this will hap\u00adpen so quick\u00adly. \u201cBut I can imag\u00adine DC tech\u00adnol\u00ado\u00adgy slow\u00adly becom\u00ading estab\u00adlished as a co-infra\u00adstruc\u00adture in res\u00adi\u00adden\u00adtial build\u00adings and fac\u00adto\u00adry build\u00adings as well, cou\u00adpling the solar sys\u00adtem on the roof with the heat pump in the base\u00adment and the car in the garage, for exam\u00adple.\u201d So it could be the case that DC and AC emerge from his\u00adto\u00adry with at least a draw.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">YOUR CONTACTS<\/h2>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\">\n\n\n\n<p><strong>Do you have ques\u00adtions about DC grids?<\/strong><br>Stephan Rupp and Mar\u00adco Stienek\u00ader are hap\u00adpy to help:<\/p>\n\n\n\n<p>Stephan Rupp: <a href=\"&#109;&#x61;&#x69;&#108;&#x74;&#x6f;&#58;&#x53;&#x2e;&#82;&#x75;&#x70;&#112;&#x40;&#x72;&#101;&#x69;&#x6e;&#104;&#x61;&#x75;&#115;&#x65;&#x6e;&#46;&#x63;&#x6f;m\"><i class=\"wpcmsdev-icon fa fa-envelope-o\"><\/i> &#83;&#x2e;R&#x75;p&#112;&#x40;&#114;&#x65;i&#110;&#x68;&#97;&#x75;s&#x65;&#x6e;&#46;&#x63;o&#x6d;<\/a><\/p>\n\n\n\n<p>Mar\u00adco Stienek\u00ader: <a href=\"&#x6d;&#97;i&#x6c;&#x74;&#111;:&#x4d;&#x2e;&#83;t&#x69;&#x65;&#110;e&#x6b;&#x65;&#114;&#64;&#x72;&#101;&#105;n&#x68;&#97;u&#x73;&#x65;&#110;&#46;&#x63;&#x6f;&#109;\"><i class=\"wpcmsdev-icon fa fa-envelope-o\"><\/i> &#77;&#x2e;S&#116;&#x69;e&#110;&#x65;k&#101;&#x72;&#64;&#114;&#x65;&#105;&#x6e;&#x68;&#97;&#x75;&#x73;&#101;&#x6e;&#46;&#99;&#x6f;m<\/a><\/p>\n","protected":false},"excerpt":{"rendered":"<p>Solar pow\u00ader sys\u00adtems, charg\u00ading sta\u00adtions for elec\u00adtric vehi\u00adcles, and bat\u00adtery stor\u00adage sys\u00adtems have one thing in com\u00admon: They are direct cur\u00adrent sys\u00adtems. But as long as they are con\u00adnect\u00aded via AC net\u00adworks, there are high con\u00adver\u00adsion loss\u00ades. Are direct cur\u00adrent net\u00adworks the answer?<\/p>\n","protected":false},"author":7,"featured_media":7752,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"_acf_changed":false,"wp_typography_post_enhancements_disabled":false,"footnotes":""},"categories":[12],"tags":[],"class_list":["post-7258","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-08-2022"],"acf":[],"_links":{"self":[{"href":"https:\/\/onload.reinhausen.com\/en\/wp-json\/wp\/v2\/posts\/7258","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/onload.reinhausen.com\/en\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/onload.reinhausen.com\/en\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/onload.reinhausen.com\/en\/wp-json\/wp\/v2\/users\/7"}],"replies":[{"embeddable":true,"href":"https:\/\/onload.reinhausen.com\/en\/wp-json\/wp\/v2\/comments?post=7258"}],"version-history":[{"count":8,"href":"https:\/\/onload.reinhausen.com\/en\/wp-json\/wp\/v2\/posts\/7258\/revisions"}],"predecessor-version":[{"id":10880,"href":"https:\/\/onload.reinhausen.com\/en\/wp-json\/wp\/v2\/posts\/7258\/revisions\/10880"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/onload.reinhausen.com\/en\/wp-json\/wp\/v2\/media\/7752"}],"wp:attachment":[{"href":"https:\/\/onload.reinhausen.com\/en\/wp-json\/wp\/v2\/media?parent=7258"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/onload.reinhausen.com\/en\/wp-json\/wp\/v2\/categories?post=7258"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/onload.reinhausen.com\/en\/wp-json\/wp\/v2\/tags?post=7258"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}