{"id":5853,"date":"2025-05-23T02:33:41","date_gmt":"2025-05-23T02:33:41","guid":{"rendered":"https:\/\/ernst.com.vn\/testing-4\/"},"modified":"2025-05-23T08:57:58","modified_gmt":"2025-05-23T08:57:58","slug":"back-to-back-test-bed","status":"publish","type":"post","link":"https:\/\/ernst.com.vn\/en\/back-to-back-test-bed\/","title":{"rendered":"Back-to-Back test bed"},"content":{"rendered":"<div class=\"wp-block-kadence-column kadence-column_ec7821-e5 inner-column-1\">\n<div class=\"kt-inside-inner-col\">\n<p>Back-to-back (B2B) setups provide a good introduction to testing electric motors. The electric motor to be tested (DUT = device under test) is usually coupled with an identical machine and run against each other.<\/p>\n<p>One machine is in torque control mode, while the opposite DUT is in speed control.<\/p>\n<\/div>\n<\/div>\n<div class=\"wp-block-kadence-column kadence-column_ab7fa4-22 inner-column-2\">\n<div class=\"kt-inside-inner-col\">\n<p>The mechanical system has a high stiffness, which excludes natural frequencies within the speed range and guarantees low-vibration operation.<\/p>\n<p>Both the mechanical structure and the shaft connection are manufactured in-house, which provides maximum flexibility for the customer.<\/p>\n<h2 class=\"wp-block-heading\">Drawings<\/h2>\n<p><img fetchpriority=\"high\" decoding=\"async\" class=\"wp-image-5907 alignleft\" src=\"https:\/\/ernst.com.vn\/wp-content\/uploads\/2025\/05\/ernst-testing-system-15.png\" alt=\"\" width=\"500\" height=\"500\" srcset=\"https:\/\/ernst.com.vn\/wp-content\/uploads\/2025\/05\/ernst-testing-system-15.png 1140w, https:\/\/ernst.com.vn\/wp-content\/uploads\/2025\/05\/ernst-testing-system-15-300x300.png 300w, https:\/\/ernst.com.vn\/wp-content\/uploads\/2025\/05\/ernst-testing-system-15-1024x1024.png 1024w, https:\/\/ernst.com.vn\/wp-content\/uploads\/2025\/05\/ernst-testing-system-15-150x150.png 150w, https:\/\/ernst.com.vn\/wp-content\/uploads\/2025\/05\/ernst-testing-system-15-768x768.png 768w, https:\/\/ernst.com.vn\/wp-content\/uploads\/2025\/05\/ernst-testing-system-15-270x270.png 270w\" sizes=\"(max-width: 500px) 100vw, 500px\" \/><\/p>\n<div class=\"wp-block-group has-light-grey-background-color has-background\">\n<div class=\"wp-block-group__inner-container is-layout-flow wp-block-group-is-layout-flow\">\n<div class=\"wp-block-group is-style-container-m\">\n<div class=\"wp-block-group__inner-container is-layout-flow wp-block-group-is-layout-flow\">\n<div class=\"kb-row-layout-wrap kb-row-layout-id_fd4079-a1 alignnone wp-block-kadence-rowlayout\">\n<div class=\"kt-row-column-wrap kt-has-2-columns kt-row-layout-equal kt-tab-layout-inherit kt-mobile-layout-row kt-row-valign-middle\">\n<div class=\"wp-block-kadence-column kadence-column_068aee-ac inner-column-2\">\n<div class=\"kt-inside-inner-col\">\n<p><strong>Properties<\/strong><\/p>\n<ul class=\"wp-block-list\">\n<li>Base structures with 1st natural frequency above the speed range<\/li>\n<li>Damping elements for vibration decoupling<\/li>\n<li>Alignment via load elements and grinding plates<\/li>\n<li>Functional surfaces for retrofitting of bearing points and sensors<\/li>\n<li>Mounting fits \/ bolts for mounting of DUTs<\/li>\n<li>Customer-specific adaptations possible<\/li>\n<li>In-house production and assembly at ERNST<\/li>\n<\/ul>\n<p><strong>Options<\/strong><\/p>\n<ul class=\"wp-block-list\">\n<li>Climate preparation<\/li>\n<li>Mineral cast filling for additional damping<\/li>\n<li><a href=\"https:\/\/ernst.com.vn\/en\/high-speed-adaptation-and-powertrain\/\" target=\"_blank\" rel=\"noopener\">Shaft connection<\/a><\/li>\n<li>Adaptation components<\/li>\n<li><a href=\"https:\/\/ernst.com.vn\/en\/b-side-support\/\" target=\"_blank\" rel=\"noopener\">B-side support<\/a><\/li>\n<\/ul>\n<\/div>\n<\/div>\n<\/div>\n<\/div>\n<\/div>\n<\/div>\n<\/div>\n<\/div>\n<div class=\"wp-block-group single-pt-details is-style-container-m\">\n<div class=\"wp-block-group__inner-container is-layout-flow wp-block-group-is-layout-flow\">\n<h2><\/h2>\n<h2><\/h2>\n<h2><\/h2>\n<h2 class=\"wp-block-heading\">Product examples<\/h2>\n<p><img decoding=\"async\" class=\" wp-image-5904 alignleft\" src=\"https:\/\/ernst.com.vn\/wp-content\/uploads\/2025\/05\/ernst-testing-system-14.png\" alt=\"\" width=\"300\" height=\"300\" srcset=\"https:\/\/ernst.com.vn\/wp-content\/uploads\/2025\/05\/ernst-testing-system-14.png 1140w, https:\/\/ernst.com.vn\/wp-content\/uploads\/2025\/05\/ernst-testing-system-14-300x300.png 300w, https:\/\/ernst.com.vn\/wp-content\/uploads\/2025\/05\/ernst-testing-system-14-1024x1024.png 1024w, https:\/\/ernst.com.vn\/wp-content\/uploads\/2025\/05\/ernst-testing-system-14-150x150.png 150w, https:\/\/ernst.com.vn\/wp-content\/uploads\/2025\/05\/ernst-testing-system-14-768x768.png 768w, https:\/\/ernst.com.vn\/wp-content\/uploads\/2025\/05\/ernst-testing-system-14-270x270.png 270w\" sizes=\"(max-width: 300px) 100vw, 300px\" \/><\/p>\n<\/div>\n<\/div>\n<p><strong>E-motor B2B test bed 20,000<\/strong><\/p>\n<p>Technical data:<\/p>\n<ul class=\"wp-block-list\">\n<li>Speed range: up to 20,000 rpm<\/li>\n<li>Torque range: up to 1,000 Nm<\/li>\n<li>Weight: approx. 1,500 kg<\/li>\n<li>Dimensions: 800 mm x 950 mm x 750 mm<\/li>\n<li>Shaft connection consisting of two intermediate bearings, HBM measuring flange and coupling<\/li>\n<li>Mechanical interface identical on both sides<\/li>\n<li>Large and flexibly applicable adaptation surfaces<\/li>\n<\/ul>\n<\/div>\n<\/div>\n<div class=\"wp-block-kadence-column kadence-column_a2a882-d4 inner-column-2\">\n<div class=\"kt-inside-inner-col\">\n<div class=\"wp-block-kadence-column kadence-column_177c3b-94 inner-column-1\">\n<div class=\"kt-inside-inner-col\">\n<p>&nbsp;<\/p>\n<p>&nbsp;<\/p>\n<p><img decoding=\"async\" class=\"wp-image-5909 alignleft\" src=\"https:\/\/ernst.com.vn\/wp-content\/uploads\/2025\/05\/ernst-testing-system-16.png\" alt=\"\" width=\"300\" height=\"300\" srcset=\"https:\/\/ernst.com.vn\/wp-content\/uploads\/2025\/05\/ernst-testing-system-16.png 1140w, https:\/\/ernst.com.vn\/wp-content\/uploads\/2025\/05\/ernst-testing-system-16-300x300.png 300w, https:\/\/ernst.com.vn\/wp-content\/uploads\/2025\/05\/ernst-testing-system-16-1024x1024.png 1024w, https:\/\/ernst.com.vn\/wp-content\/uploads\/2025\/05\/ernst-testing-system-16-150x150.png 150w, https:\/\/ernst.com.vn\/wp-content\/uploads\/2025\/05\/ernst-testing-system-16-768x768.png 768w, https:\/\/ernst.com.vn\/wp-content\/uploads\/2025\/05\/ernst-testing-system-16-270x270.png 270w\" sizes=\"(max-width: 300px) 100vw, 300px\" \/><\/p>\n<p><strong>E-motor B2B test bed 25,000<\/strong><\/p>\n<p>Technical data:<\/p>\n<ul class=\"wp-block-list\">\n<li>Speed range: up to 25,000 rpm<\/li>\n<li>Torque range: up to 1,000 Nm<\/li>\n<li>Weight: approx. 1,600 kg<\/li>\n<li>Dimensions: 900 mm x 1100 mm x 675 mm<\/li>\n<li>Shaft connection consisting of an intermediate bearing and shaft adapter, without HBM measuring flange (but adaptation surfaces corresponding to HBM T12HS)<\/li>\n<li>Mechanical interface identical on both sides<\/li>\n<li>Large and flexibly applicable adaptation surfaces<\/li>\n<\/ul>\n<p>&nbsp;<\/p>\n<\/div>\n<\/div>\n<\/div>\n<\/div>\n<div class=\"wp-block-kadence-column kadence-column_f89234-90 inner-column-3\">\n<div class=\"kt-inside-inner-col\">\n<div class=\"wp-block-kadence-column kadence-column_3adf35-f0 inner-column-1\">\n<div class=\"kt-inside-inner-col\">\n<div class=\"wp-block-image\"><img loading=\"lazy\" decoding=\"async\" class=\"wp-image-5911 alignleft\" src=\"https:\/\/ernst.com.vn\/wp-content\/uploads\/2025\/05\/ernst-testing-system-17.png\" alt=\"\" width=\"300\" height=\"300\" srcset=\"https:\/\/ernst.com.vn\/wp-content\/uploads\/2025\/05\/ernst-testing-system-17.png 1140w, https:\/\/ernst.com.vn\/wp-content\/uploads\/2025\/05\/ernst-testing-system-17-300x300.png 300w, https:\/\/ernst.com.vn\/wp-content\/uploads\/2025\/05\/ernst-testing-system-17-1024x1024.png 1024w, https:\/\/ernst.com.vn\/wp-content\/uploads\/2025\/05\/ernst-testing-system-17-150x150.png 150w, https:\/\/ernst.com.vn\/wp-content\/uploads\/2025\/05\/ernst-testing-system-17-768x768.png 768w, https:\/\/ernst.com.vn\/wp-content\/uploads\/2025\/05\/ernst-testing-system-17-270x270.png 270w\" sizes=\"(max-width: 300px) 100vw, 300px\" \/><\/div>\n<p><strong>E-motor B2B test bed 30,000<\/strong><\/p>\n<p>Technical data:<\/p>\n<ul class=\"wp-block-list\">\n<li>Speed range: up to 30,000 rpm<\/li>\n<li>Torque range: up to 600 Nm<\/li>\n<li>Weight: approx. 1,500 kg<\/li>\n<li>Dimensions: 850 mm x 1220 mm x 700 mm<\/li>\n<li>Shaft connection consisting of an intermediate bearing and shaft adapter as well as HBM measuring flange (T12HS)<\/li>\n<li>Milling groove for HBM stator integrated in the substructure<\/li>\n<li>Mechanical interface identical on both sides<\/li>\n<li>Large and flexibly applicable adaptation surfaces<\/li>\n<\/ul>\n<\/div>\n<\/div>\n<\/div>\n<\/div>\n","protected":false},"excerpt":{"rendered":"<p>Back-to-back (B2B) setups provide a good introduction to testing electric motors. The electric motor to be tested (DUT = device under test) is usually coupled with an identical machine and [&hellip;]<\/p>\n","protected":false},"author":1,"featured_media":5904,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[125],"tags":[171],"class_list":["post-5853","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-test-systems","tag-back-to-back-test-bed"],"_links":{"self":[{"href":"https:\/\/ernst.com.vn\/en\/wp-json\/wp\/v2\/posts\/5853","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/ernst.com.vn\/en\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/ernst.com.vn\/en\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/ernst.com.vn\/en\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/ernst.com.vn\/en\/wp-json\/wp\/v2\/comments?post=5853"}],"version-history":[{"count":2,"href":"https:\/\/ernst.com.vn\/en\/wp-json\/wp\/v2\/posts\/5853\/revisions"}],"predecessor-version":[{"id":5906,"href":"https:\/\/ernst.com.vn\/en\/wp-json\/wp\/v2\/posts\/5853\/revisions\/5906"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/ernst.com.vn\/en\/wp-json\/wp\/v2\/media\/5904"}],"wp:attachment":[{"href":"https:\/\/ernst.com.vn\/en\/wp-json\/wp\/v2\/media?parent=5853"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/ernst.com.vn\/en\/wp-json\/wp\/v2\/categories?post=5853"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/ernst.com.vn\/en\/wp-json\/wp\/v2\/tags?post=5853"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}