{"id":24427,"date":"2023-02-21T10:26:34","date_gmt":"2023-02-21T10:26:34","guid":{"rendered":"https:\/\/www.engineernewsnetwork.com\/blog\/?p=24427"},"modified":"2023-02-21T10:26:35","modified_gmt":"2023-02-21T10:26:35","slug":"current-sensor-for-high-power-ev-traction-inverters-delivers-smallest-footprint","status":"publish","type":"post","link":"https:\/\/www.engineernewsnetwork.com\/blog\/current-sensor-for-high-power-ev-traction-inverters-delivers-smallest-footprint\/","title":{"rendered":"Current sensor for high-power EV traction inverters delivers smallest footprint"},"content":{"rendered":"\n<p class=\"wp-block-paragraph\">Distance and speed of charging are vital in the competitive EV sector and, like all vehicle components, high-power integrated traction inverters \u2013 which convert DC into AC and capture energy for the vehicle \u2013 need to combine superior performance with being as small and light as possible. Measuring just 29mm x 21mm x 12mm and weighing 27g, <strong><a href=\"http:\/\/www.lem.com\">LEM<\/a><\/strong>\u2019s new HSTDR current sensor is significantly more compact than a traditional C-core sensor, making it much easier to be integrated into space-limited inverter boxes.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">The sensor enables traction inverters to operate at maximum efficiency by combining high accuracy with affordability and the ability to operate in demanding environments (the sensor has an operating range of -40\u00b0C to +125\u00b0C and is robust enough to cope with vibrations up to 10G). Using open loop Hall effect technology and an innovative magnetic core design, the HSTDR offers excellent immunity against external field and cross talk as well as consistent behaviour over frequency with little part-to-part phase shift dispersion, ensuring more accurate torque control.&nbsp;<\/p>\n\n\n<div class=\"wp-block-image\">\n<figure class=\"aligncenter size-large\"><a href=\"https:\/\/www.engineernewsnetwork.com\/blog\/wp-content\/uploads\/2023\/02\/HSTDR-Image-1.jpg\"><img loading=\"lazy\" decoding=\"async\" width=\"1024\" height=\"1024\" src=\"https:\/\/www.engineernewsnetwork.com\/blog\/wp-content\/uploads\/2023\/02\/HSTDR-Image-1-1024x1024.jpg\" alt=\"\" class=\"wp-image-24428\" srcset=\"https:\/\/www.engineernewsnetwork.com\/blog\/wp-content\/uploads\/2023\/02\/HSTDR-Image-1-1024x1024.jpg 1024w, https:\/\/www.engineernewsnetwork.com\/blog\/wp-content\/uploads\/2023\/02\/HSTDR-Image-1-300x300.jpg 300w, https:\/\/www.engineernewsnetwork.com\/blog\/wp-content\/uploads\/2023\/02\/HSTDR-Image-1-150x150.jpg 150w, https:\/\/www.engineernewsnetwork.com\/blog\/wp-content\/uploads\/2023\/02\/HSTDR-Image-1-768x768.jpg 768w, https:\/\/www.engineernewsnetwork.com\/blog\/wp-content\/uploads\/2023\/02\/HSTDR-Image-1-1536x1536.jpg 1536w, https:\/\/www.engineernewsnetwork.com\/blog\/wp-content\/uploads\/2023\/02\/HSTDR-Image-1.jpg 2000w\" sizes=\"auto, (max-width: 1024px) 100vw, 1024px\" \/><\/a><figcaption class=\"wp-element-caption\">To enable designers of electric vehicle (EV) traction inverters to optimise the size, weight and efficiency ratios of their products so that vehicles can travel further distances between charges, electrical measurement technology specialist LEM has introduced a current sensor that is the smallest of its kind on the market<\/figcaption><\/figure>\n<\/div>\n\n\n<p class=\"wp-block-paragraph\">What makes the sensor unique is not only that it is 42% smaller than its predecessor (LEM\u2019s HSNDR) but also weighs 50% less and offers 50% greater measuring range, as well as best-in-class accuracy and a global error over temperature and lifetime below 3.5%. Giving EV manufacturers the choice of having different current measuring ranges in the same housing \u2013 from \u00b1300 A up to \u00b11500 A \u2013 the sensor ensures galvanic separation between the primary circuit (high power) and the secondary circuit (electronic circuit), which is also suitable for 800V battery systems.&nbsp;<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">One way LEM\u2019s designers were able to minimise the footprint of the HSTDR was by making it the only sensor for EV traction inverters, DC link and 3-phase current measurement to feature an integrated busbar, starting with the earlier HSNDR, fitting perfectly into the smallest possible core aperture. Now, with access to a fully calibrated package of core, busbar and sensing element, car component designers and EV manufacturers will have the flexibility to achieve major reductions in their products\u2019 time to market.<\/p>\n","protected":false},"excerpt":{"rendered":"<p>Distance and speed of charging are vital in the competitive EV sector and, like all vehicle components, high-power integrated traction inverters \u2013 which convert DC into AC and capture energy for the vehicle \u2013 need to combine superior performance with being as small and light as possible. Measuring just 29mm x 21mm x 12mm and &hellip;<\/p>\n","protected":false},"author":1,"featured_media":24428,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[105,104],"tags":[304,4873,11346,4138,11345],"class_list":["post-24427","post","type-post","status-publish","format-standard","has-post-thumbnail","","category-design","category-electronics","tag-electric-vehicle","tag-ev","tag-hstdr-current-sensor","tag-lem","tag-traction-inverters"],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v27.4 - https:\/\/yoast.com\/product\/yoast-seo-wordpress\/ -->\n<title>Current sensor for high-power EV traction inverters delivers smallest footprint - Engineer News Network<\/title>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/www.engineernewsnetwork.com\/blog\/current-sensor-for-high-power-ev-traction-inverters-delivers-smallest-footprint\/\" \/>\n<meta property=\"og:locale\" content=\"en_GB\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"Current sensor for high-power EV traction inverters delivers smallest footprint - Engineer News Network\" \/>\n<meta property=\"og:description\" content=\"Distance and speed of charging are vital in the competitive EV sector and, like all vehicle components, high-power integrated traction inverters \u2013 which convert DC into AC and capture energy for the vehicle \u2013 need to combine superior performance with being as small and light as possible. 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