{"id":1175354,"date":"2020-04-01T07:30:17","date_gmt":"2020-04-01T13:30:17","guid":{"rendered":"https:\/\/www.mining.com\/?p=1018752"},"modified":"2020-04-01T07:30:17","modified_gmt":"2020-04-01T13:30:17","slug":"how-to-make-solar-panels-last-longer","status":"publish","type":"post","link":"https:\/\/juniorminingnews.com\/?p=1175354","title":{"rendered":"How to make solar panels last longer"},"content":{"rendered":"<p>The performance of solar modules remains practically unimpaired even after 60 calculated years of operation when equipped with embedding materials to prevent potential-induced degradation or PID.<\/p>\n<div class='d-flex justify-content-center d-xs-block d-sm-block d-md-none'>\n<div id='div-gpt-ad-1561499308230-0'><script>googletag.cmd.push(function() {googletag.display('div-gpt-ad-1561499308230-0');});<\/script><\/div>\n<\/div>\n<p>According to scientists at Germany\u2019s Centre for Solar Energy and Hydrogen Research Baden-W\u00fcrttemberg (ZSW), potential-induced degradation occurs when a photo-voltaic module\u2019s efficiency is affected by leakage currents caused by a difference in voltages between the solar cells and the grounded frame.<\/p>\n<figure class=\"wp-block-pullquote alignright\">\n<blockquote>\n<p>The embedding material in the solar modules has a major influence on their resistance to PID. Modules equipped with POE are absolutely stable in that respect<\/p>\n<\/blockquote>\n<\/figure>\n<p>Even though this phenomenon has been prevented by adjusting the design of conventional modules, with system voltages increasing from 1,000 to 1,500 volts, the issue of how to prevent PID is back on the engineering agenda. <\/p>\n<p>Thus, a team at ZSW \u00a0joined forces with business ventures Specialized Technology Resources Espa\u00f1a and CS Wismar and decided to develop a heavy-duty test that simulates decades of operation and provides more accurate information about solar modules\u2019 resistance to PID. <\/p>\n<p>The test consisted of combining the stress-inducing components of an established test known as IEC TS 62804-1 and increased the voltage by 67% to 2,500 volts. With trials running up to 1,000 hours, this test was more than 10 times longer than the standard test.<\/p>\n<p>Two types of cells were tested: a resistant version and a variant that is slightly more susceptible to PID. Both cells were combined once each with the standard EVA (ethylene vinyl acetate; EVA-1) embedding material, an improved, highly resistive EVA (EVA-2), and with a polyolefin elastomer (POE). <\/p>\n<p>\u201cThe results showed that PID causes the performance of modules with the EVA-1 embedding material to drop by up to around 5% after two calculated years of operation in a 1,500-volt system,\u201d the researchers said in a media statement. \u201cModules equipped with EVA-2 held up even better, with the performance decreasing up to 5% only after 22 years of operation. According to the ZSW\u2019s calculations, modules with a POE would show practically no signs of PID even after 60 years in operation.\u201d <\/p>\n<p>In the scientists\u2019 view, long-term forecasts like the one they\u2019ve released are important to those assessing the feasibility of solar projects for their companies, partners, borrowers, and so on. <\/p>\n","protected":false},"excerpt":{"rendered":"<p>New research shows the key is in the cells embedding material.<\/p>\n","protected":false},"author":92,"featured_media":0,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"site-sidebar-layout":"default","site-content-layout":"","ast-site-content-layout":"","site-content-style":"default","site-sidebar-style":"default","ast-global-header-display":"","ast-banner-title-visibility":"","ast-main-header-display":"","ast-hfb-above-header-display":"","ast-hfb-below-header-display":"","ast-hfb-mobile-header-display":"","site-post-title":"","ast-breadcrumbs-content":"","ast-featured-img":"","footer-sml-layout":"","theme-transparent-header-meta":"","adv-header-id-meta":"","stick-header-meta":"","header-above-stick-meta":"","header-main-stick-meta":"","header-below-stick-meta":"","astra-migrate-meta-layouts":"default","ast-page-background-enabled":"default","ast-page-background-meta":{"desktop":{"background-color":"","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-gradient":""},"tablet":{"background-color":"","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-gradient":""},"mobile":{"background-color":"","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-gradient":""}},"ast-content-background-meta":{"desktop":{"background-color":"var(--ast-global-color-5)","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-gradient":""},"tablet":{"background-color":"var(--ast-global-color-5)","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-gradient":""},"mobile":{"background-color":"var(--ast-global-color-5)","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-gradient":""}},"footnotes":""},"categories":[1035,369],"tags":[],"_links":{"self":[{"href":"https:\/\/juniorminingnews.com\/index.php?rest_route=\/wp\/v2\/posts\/1175354"}],"collection":[{"href":"https:\/\/juniorminingnews.com\/index.php?rest_route=\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/juniorminingnews.com\/index.php?rest_route=\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/juniorminingnews.com\/index.php?rest_route=\/wp\/v2\/users\/92"}],"replies":[{"embeddable":true,"href":"https:\/\/juniorminingnews.com\/index.php?rest_route=%2Fwp%2Fv2%2Fcomments&post=1175354"}],"version-history":[{"count":1,"href":"https:\/\/juniorminingnews.com\/index.php?rest_route=\/wp\/v2\/posts\/1175354\/revisions"}],"predecessor-version":[{"id":1175355,"href":"https:\/\/juniorminingnews.com\/index.php?rest_route=\/wp\/v2\/posts\/1175354\/revisions\/1175355"}],"wp:attachment":[{"href":"https:\/\/juniorminingnews.com\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=1175354"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/juniorminingnews.com\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=1175354"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/juniorminingnews.com\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=1175354"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}