{"id":12779,"date":"2024-10-21T08:11:50","date_gmt":"2024-10-21T08:11:50","guid":{"rendered":"https:\/\/hsmagnet.com\/?p=12022"},"modified":"2025-11-04T02:03:51","modified_gmt":"2025-11-04T02:03:51","slug":"%d1%8d%d0%bb%d0%b5%d0%ba%d1%82%d1%80%d0%be%d0%bf%d0%be%d1%81%d1%82%d0%be%d1%8f%d0%bd%d0%bd%d1%8b%d0%b9-%d0%bc%d0%b0%d0%b3%d0%bd%d0%b8%d1%82","status":"publish","type":"post","link":"https:\/\/hsmagnet.com\/ru\/2024\/10\/21\/electropermanent-magnet\/","title":{"rendered":"\u0427\u0442\u043e \u0442\u0430\u043a\u043e\u0435 \u044d\u043b\u0435\u043a\u0442\u0440\u043e\u043f\u043e\u0441\u0442\u043e\u044f\u043d\u043d\u044b\u0439 \u043c\u0430\u0433\u043d\u0438\u0442 (\u042d\u041f\u041c)? \u041f\u043e\u0434\u0440\u043e\u0431\u043d\u043e\u0435 \u0440\u0443\u043a\u043e\u0432\u043e\u0434\u0441\u0442\u0432\u043e"},"content":{"rendered":"\n<p class=\"wp-block-paragraph\">An <strong>electropermanent magnet (EPM)<\/strong> is a type of <strong>permanent magnet<\/strong> that can be switched on or off using a brief pulse of electric current. Unlike traditional <strong>electromagnets<\/strong>, which require continuous power to maintain a magnetic field, EPMs use permanent magnets to generate a stable magnetic field without ongoing energy consumption. This makes them highly efficient for applications like <strong>industrial lifting magnets<\/strong> and innovative <strong>self-building structures<\/strong>.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">In this guide, we\u2019ll explore the <strong>definition<\/strong>, <strong>working principle<\/strong>, and <strong>applications<\/strong> of electropermanent magnets, highlighting their advantages over conventional magnetic systems.<\/p>\n\n\n<div class=\"root-eb-toc-h7100 wp-block-essential-blocks-table-of-contents\"><div class=\"eb-parent-wrapper eb-parent-eb-toc-h7100 \"><div class=\"eb-toc-container eb-toc-h7100  eb-toc-is-not-sticky eb-toc-not-collapsible eb-toc-initially-not-collapsed eb-toc-scrollToTop style-1 list-style-none\" data-scroll-top=\"false\" data-scroll-top-icon=\"fas fa-angle-up\" data-collapsible=\"false\" data-sticky-hide-mobile=\"false\" data-sticky=\"false\" data-scroll-target=\"scroll_to_toc\" data-copy-link=\"false\" data-editor-type=\"\" data-hide-desktop=\"false\" data-hide-tab=\"false\" data-hide-mobile=\"false\" data-itemcollapsed=\"false\" data-highlight-scroll=\"false\"><div class=\"eb-toc-header\"><h2 class=\"eb-toc-title\">Table of Contents<\/h2><\/div><div class=\"eb-toc-wrapper \" data-headers=\"[{&quot;level&quot;:2,&quot;content&quot;:&quot;What is an Electropermanent Magnet?&quot;,&quot;text&quot;:&quot;What is an Electropermanent Magnet?&quot;,&quot;link&quot;:&quot;what-is-an-electropermanent-magnet&quot;},{&quot;level&quot;:2,&quot;content&quot;:&quot;How Does an Electropermanent Magnet Work?&quot;,&quot;text&quot;:&quot;How Does an Electropermanent Magnet Work?&quot;,&quot;link&quot;:&quot;how-does-an-electropermanent-magnet-work&quot;},{&quot;level&quot;:3,&quot;content&quot;:&quot;EPM Operation Explained&quot;,&quot;text&quot;:&quot;EPM Operation Explained&quot;,&quot;link&quot;:&quot;epm-operation-explained&quot;},{&quot;level&quot;:3,&quot;content&quot;:&quot;Magnetization Switching&quot;,&quot;text&quot;:&quot;Magnetization Switching&quot;,&quot;link&quot;:&quot;magnetization-switching&quot;},{&quot;level&quot;:2,&quot;content&quot;:&quot;Advantages of Electropermanent Magnets&quot;,&quot;text&quot;:&quot;Advantages of Electropermanent Magnets&quot;,&quot;link&quot;:&quot;advantages-of-electropermanent-magnets&quot;},{&quot;level&quot;:2,&quot;content&quot;:&quot;Applications of Electropermanent Magnets&quot;,&quot;text&quot;:&quot;Applications of Electropermanent Magnets&quot;,&quot;link&quot;:&quot;applications-of-electropermanent-magnets&quot;},{&quot;level&quot;:2,&quot;content&quot;:&quot;Electropermanent Magnet vs. Electromagnet&quot;,&quot;text&quot;:&quot;Electropermanent Magnet vs. Electromagnet&quot;,&quot;link&quot;:&quot;electropermanent-magnet-vs-electromagnet&quot;},{&quot;level&quot;:2,&quot;content&quot;:&quot;Conclusion&quot;,&quot;text&quot;:&quot;Conclusion&quot;,&quot;link&quot;:&quot;conclusion&quot;}]\" data-visible=\"[true,true,true,true,true,true]\" data-delete-headers=\"[{&quot;label&quot;:&quot;What is an Electropermanent Magnet?&quot;,&quot;value&quot;:&quot;what-is-an-electropermanent-magnet&quot;,&quot;isDelete&quot;:false},{&quot;label&quot;:&quot;How Does an Electropermanent Magnet Work?&quot;,&quot;value&quot;:&quot;how-does-an-electropermanent-magnet-work&quot;,&quot;isDelete&quot;:false},{&quot;label&quot;:&quot;EPM Operation Explained&quot;,&quot;value&quot;:&quot;epm-operation-explained&quot;,&quot;isDelete&quot;:false},{&quot;label&quot;:&quot;Magnetization Switching&quot;,&quot;value&quot;:&quot;magnetization-switching&quot;,&quot;isDelete&quot;:false},{&quot;label&quot;:&quot;Advantages of Electropermanent Magnets&quot;,&quot;value&quot;:&quot;advantages-of-electropermanent-magnets&quot;,&quot;isDelete&quot;:false},{&quot;label&quot;:&quot;Applications of Electropermanent Magnets&quot;,&quot;value&quot;:&quot;applications-of-electropermanent-magnets&quot;,&quot;isDelete&quot;:false},{&quot;label&quot;:&quot;Electropermanent Magnet vs. Electromagnet&quot;,&quot;value&quot;:&quot;electropermanent-magnet-vs-electromagnet&quot;,&quot;isDelete&quot;:false},{&quot;label&quot;:&quot;Conclusion&quot;,&quot;value&quot;:&quot;conclusion&quot;,&quot;isDelete&quot;:false}]\" data-smooth=\"true\" data-top-offset=\"\"><div class=\"eb-toc__list-wrap\"><ul class=\"eb-toc__list\"><li><a href=\"#what-is-an-electropermanent-magnet\">What is an Electropermanent Magnet?<\/a><li><a href=\"#how-does-an-electropermanent-magnet-work\">How Does an Electropermanent Magnet Work?<\/a><ul class=\"eb-toc__list\"><li><a href=\"#epm-operation-explained\">EPM Operation Explained<\/a><li><a href=\"#magnetization-switching\">Magnetization Switching<\/a><\/li><\/ul><li><a href=\"#advantages-of-electropermanent-magnets\">Advantages of Electropermanent Magnets<\/a><li><a href=\"#applications-of-electropermanent-magnets\">Applications of Electropermanent Magnets<\/a><li><a href=\"#electropermanent-magnet-vs-electromagnet\">Electropermanent Magnet vs. Electromagnet<\/a><li><a href=\"#conclusion\">Conclusion<\/a><\/ul><\/div><\/div><\/div><\/div><\/div>\n\n\n<h2 class=\"wp-block-heading\">What is an Electropermanent Magnet?<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">An electropermanent magnet consists of two key components:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>A <strong>hard magnetic material<\/strong> (high coercivity, e.g., <a href=\"https:\/\/hsmagnet.com\/magnetic-materials\/ndfeb-magnets\/\">NdFeB<\/a>) that maintains a strong, stable magnetic field.<\/li>\n\n\n\n<li>A <strong>soft magnetic material<\/strong> (low coercivity, e.g., <a href=\"https:\/\/hsmagnet.com\/magnetic-materials\/alnico-magnets\/\">AlNiCo<\/a>) whose magnetization direction can be reversed with a current pulse.<\/li>\n<\/ul>\n\n\n\n<p class=\"wp-block-paragraph\">By controlling the magnetization of the soft material via a wire coil, the EPM can toggle its external magnetic field:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><strong>On State<\/strong>: When the hard and soft materials\u2019 magnetizations align, the EPM produces a strong external magnetic field.<\/li>\n\n\n\n<li><strong>Off State<\/strong>: When their magnetizations oppose each other, the external magnetic field is nearly nonexistent.<\/li>\n<\/ul>\n\n\n\n<p class=\"wp-block-paragraph\">This unique ability to switch the magnetic field without continuous power distinguishes EPMs from electromagnets, offering <strong>energy efficiency<\/strong> and <strong>reliability<\/strong>.<\/p>\n\n\n\n<figure class=\"wp-block-image size-large\"><img loading=\"lazy\" decoding=\"async\" width=\"1024\" height=\"683\" src=\"https:\/\/hsmagnet.com\/wp-content\/uploads\/2024\/10\/Comparison-of-electropermanent-magnet-in-on-and-off-states-showing-magnetization-alignment-1024x683.webp\" alt=\"Comparison of electropermanent magnet in on and off states, showing magnetization alignment\" class=\"wp-image-13754\" srcset=\"https:\/\/hsmagnet.com\/wp-content\/uploads\/2024\/10\/Comparison-of-electropermanent-magnet-in-on-and-off-states-showing-magnetization-alignment-1024x683.webp 1024w, https:\/\/hsmagnet.com\/wp-content\/uploads\/2024\/10\/Comparison-of-electropermanent-magnet-in-on-and-off-states-showing-magnetization-alignment-300x200.webp 300w, https:\/\/hsmagnet.com\/wp-content\/uploads\/2024\/10\/Comparison-of-electropermanent-magnet-in-on-and-off-states-showing-magnetization-alignment-768x512.webp 768w, https:\/\/hsmagnet.com\/wp-content\/uploads\/2024\/10\/Comparison-of-electropermanent-magnet-in-on-and-off-states-showing-magnetization-alignment-600x400.webp 600w, https:\/\/hsmagnet.com\/wp-content\/uploads\/2024\/10\/Comparison-of-electropermanent-magnet-in-on-and-off-states-showing-magnetization-alignment.webp 1536w\" sizes=\"auto, (max-width: 1024px) 100vw, 1024px\" \/><\/figure>\n\n\n\n<h2 class=\"wp-block-heading\">How Does an Electropermanent Magnet Work?<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">The principle of an EPM is based on a <strong>magnetic latch<\/strong> configuration, typically involving:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>Two <strong>permanent magnets<\/strong> (one hard, one soft).<\/li>\n\n\n\n<li>Two <strong>soft magnetic plates<\/strong> (e.g., iron alloy) that concentrate magnetic flux.<\/li>\n\n\n\n<li>A <strong>coil<\/strong> wound around the soft magnet to apply current pulses.<\/li>\n<\/ul>\n\n\n\n<h3 class=\"wp-block-heading\">EPM Operation Explained<\/h3>\n\n\n\n<ol class=\"wp-block-list\">\n<li><strong>On Configuration<\/strong>:\n<ul class=\"wp-block-list\">\n<li>Both magnets\u2019 north poles are aligned (e.g., pointing up).<\/li>\n\n\n\n<li>The magnetic flux flows through the soft magnetic plates, creating a strong external magnetic field, similar to a large magnet with distinct north and south poles.<\/li>\n\n\n\n<li>This state is ideal for applications like lifting <strong>ferrous metals<\/strong>.<\/li>\n<\/ul>\n<\/li>\n\n\n\n<li><strong>Off Configuration<\/strong>:\n<ul class=\"wp-block-list\">\n<li>The soft magnet\u2019s magnetization is reversed using a current pulse, so its poles oppose the hard magnet\u2019s.<\/li>\n\n\n\n<li>The magnetic flux is confined within the soft magnetic plates, forming a closed circuit with minimal external magnetic field.<\/li>\n\n\n\n<li>This allows the magnet to release objects without mechanical intervention.<\/li>\n<\/ul>\n<\/li>\n<\/ol>\n\n\n\n<h3 class=\"wp-block-heading\">Magnetization Switching<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">A <strong>current pulse<\/strong> through the coil generates a magnetic field stronger than the soft magnet\u2019s <strong>intrinsic coercivity<\/strong> (e.g., 50 kA\/m for AlNiCo vs. 1120 kA\/m for NdFeB). This flips the soft magnet\u2019s magnetization direction without affecting the hard magnet, enabling the EPM to toggle between on and off states.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">Advantages of Electropermanent Magnets<\/h2>\n\n\n\n<ul class=\"wp-block-list\">\n<li><strong>Energy Efficiency<\/strong>: EPMs only require a brief current pulse to switch states, unlike electromagnets that consume continuous power.<\/li>\n\n\n\n<li><strong>Reliability<\/strong>: The magnetic field is maintained by permanent magnets, ensuring stability without power sources.<\/li>\n\n\n\n<li><strong>Versatility<\/strong>: EPMs are ideal for applications requiring precise control, such as <strong>industrial lifting<\/strong>, <strong>robotics<\/strong>, and <strong>programmable magnets<\/strong> for self-assembling structures.<\/li>\n<\/ul>\n\n\n\n<h2 class=\"wp-block-heading\">Applications of Electropermanent Magnets<\/h2>\n\n\n\n<ol class=\"wp-block-list\">\n<li><strong>Industrial Lifting Magnets<\/strong>:\n<ul class=\"wp-block-list\">\n<li>EPMs made with <strong>rare earth magnets<\/strong> (e.g., NdFeB) are used to lift heavy <strong>ferrous objects<\/strong>. The magnet can be turned off to release the load, improving safety and efficiency.<\/li>\n\n\n\n<li>Example: Magnetic Lifting Technologies (internal link to a related article).<\/li>\n<\/ul>\n<\/li>\n\n\n\n<li><strong>Self-Building Structures<\/strong>:\n<ul class=\"wp-block-list\">\n<li>Programmable EPMs enable <strong>self-assembling systems<\/strong>, where components align and connect autonomously using controlled magnetic fields.<\/li>\n\n\n\n<li>Example: Research into Programmable Magnetic Structures (internal link).<\/li>\n<\/ul>\n<\/li>\n\n\n\n<li><strong>Robotics and Automation<\/strong>:\n<ul class=\"wp-block-list\">\n<li>EPMs are used in robotic grippers for precise handling of metallic objects without continuous power consumption.<\/li>\n<\/ul>\n<\/li>\n<\/ol>\n\n\n\n<figure class=\"wp-block-image size-large\"><img loading=\"lazy\" decoding=\"async\" width=\"1024\" height=\"683\" src=\"https:\/\/hsmagnet.com\/wp-content\/uploads\/2024\/10\/Examples-of-electropermanent-magnet-applications-in-industrial-lifting-robotics-and-self-building-structures-1024x683.webp\" alt=\"Examples of electropermanent magnet applications in industrial lifting, robotics, and self-building structures\" class=\"wp-image-13755\" srcset=\"https:\/\/hsmagnet.com\/wp-content\/uploads\/2024\/10\/Examples-of-electropermanent-magnet-applications-in-industrial-lifting-robotics-and-self-building-structures-1024x683.webp 1024w, https:\/\/hsmagnet.com\/wp-content\/uploads\/2024\/10\/Examples-of-electropermanent-magnet-applications-in-industrial-lifting-robotics-and-self-building-structures-300x200.webp 300w, https:\/\/hsmagnet.com\/wp-content\/uploads\/2024\/10\/Examples-of-electropermanent-magnet-applications-in-industrial-lifting-robotics-and-self-building-structures-768x512.webp 768w, https:\/\/hsmagnet.com\/wp-content\/uploads\/2024\/10\/Examples-of-electropermanent-magnet-applications-in-industrial-lifting-robotics-and-self-building-structures-600x400.webp 600w, https:\/\/hsmagnet.com\/wp-content\/uploads\/2024\/10\/Examples-of-electropermanent-magnet-applications-in-industrial-lifting-robotics-and-self-building-structures.webp 1536w\" sizes=\"auto, (max-width: 1024px) 100vw, 1024px\" \/><\/figure>\n\n\n\n<h2 class=\"wp-block-heading\">Electropermanent Magnet vs. Electromagnet<\/h2>\n\n\n\n<figure class=\"wp-block-table\"><table class=\"has-fixed-layout\"><tbody><tr><th>Feature<\/th><th>Electropermanent Magnet (EPM)<\/th><th>Electromagnet<\/th><\/tr><tr><td><strong>Power Consumption<\/strong><\/td><td>Pulse-based (minimal)<\/td><td>Continuous<\/td><\/tr><tr><td><strong>Magnetic Field Source<\/strong><\/td><td>Permanent magnets<\/td><td>Electric current<\/td><\/tr><tr><td><strong>Applications<\/strong><\/td><td>Lifting, robotics, self-assembly<\/td><td>Broad, less efficient<\/td><\/tr><tr><td><strong>Energy Efficiency<\/strong><\/td><td>High<\/td><td>Low<\/td><\/tr><\/tbody><\/table><\/figure>\n\n\n\n<h2 class=\"wp-block-heading\">Conclusion<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">Electropermanent magnets (EPMs) offer a revolutionary approach to magnetic technology, combining the strength of <strong>permanent magnets<\/strong> with the control of <strong>electromagnets<\/strong>. Their ability to toggle magnetic fields with minimal energy makes them ideal for <strong>industrial<\/strong>, <strong>robotic<\/strong>, and <strong>innovative applications<\/strong> like self-building structures. By understanding the principles and advantages of EPMs, industries can leverage this technology for greater efficiency and precision.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\"><em>Explore more about Magnetic Technologies and their applications at <a href=\"https:\/\/hsmagnet.com\/\">HS magnet<\/a>.<\/em><\/p>\n","protected":false},"excerpt":{"rendered":"<p>An electropermanent magnet (EPM) is a type of permanent magnet that can be switched on or off using a brief pulse of electric current. Unlike traditional electromagnets, which require continuous power to maintain a magnetic field, EPMs use permanent magnets to generate a stable magnetic field without ongoing energy consumption. This makes them highly efficient [&hellip;]<\/p>\n","protected":false},"author":1,"featured_media":13753,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"_acf_changed":false,"_eb_attr":"","footnotes":""},"categories":[22],"tags":[],"class_list":["post-12779","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-magnetic-applicaitons"],"acf":[],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v27.7 - https:\/\/yoast.com\/product\/yoast-seo-wordpress\/ -->\n<title>Description and Principle of Electropermanent magnet<\/title>\n<meta name=\"description\" content=\"An electropermanent magnet or EPM is a type of permanent magnet in which the external magnetic field can be switched on or off by pulses\" \/>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/hsmagnet.com\/ru\/2024\/10\/21\/\u044d\u043b\u0435\u043a\u0442\u0440\u043e\u043f\u043e\u0441\u0442\u043e\u044f\u043d\u043d\u044b\u0439-\u043c\u0430\u0433\u043d\u0438\u0442\/\" \/>\n<meta property=\"og:locale\" content=\"ru_RU\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"Description and Principle of Electropermanent magnet\" \/>\n<meta property=\"og:description\" content=\"An electropermanent magnet or EPM is a type of permanent magnet in which the external magnetic field can be switched on or off by pulses\" \/>\n<meta property=\"og:url\" content=\"https:\/\/hsmagnet.com\/ru\/2024\/10\/21\/\u044d\u043b\u0435\u043a\u0442\u0440\u043e\u043f\u043e\u0441\u0442\u043e\u044f\u043d\u043d\u044b\u0439-\u043c\u0430\u0433\u043d\u0438\u0442\/\" \/>\n<meta property=\"og:site_name\" content=\"Hangzhou HS Magnet Co.,Ltd.\" \/>\n<meta property=\"article:published_time\" content=\"2024-10-21T08:11:50+00:00\" \/>\n<meta property=\"article:modified_time\" content=\"2025-11-04T02:03:51+00:00\" \/>\n<meta property=\"og:image\" content=\"https:\/\/hsmagnet.com\/wp-content\/uploads\/2024\/10\/Close-up-of-an-electropermanent-magnet-device.webp\" \/>\n\t<meta property=\"og:image:width\" content=\"576\" \/>\n\t<meta property=\"og:image:height\" content=\"607\" \/>\n\t<meta property=\"og:image:type\" content=\"image\/webp\" \/>\n<meta name=\"author\" content=\"Jacky Wang\" \/>\n<meta name=\"twitter:card\" content=\"summary_large_image\" \/>\n<meta name=\"twitter:label1\" content=\"\u041d\u0430\u043f\u0438\u0441\u0430\u043d\u043e \u0430\u0432\u0442\u043e\u0440\u043e\u043c\" \/>\n\t<meta name=\"twitter:data1\" content=\"Jacky Wang\" \/>\n\t<meta name=\"twitter:label2\" content=\"\u041f\u0440\u0438\u043c\u0435\u0440\u043d\u043e\u0435 \u0432\u0440\u0435\u043c\u044f \u0434\u043b\u044f \u0447\u0442\u0435\u043d\u0438\u044f\" \/>\n\t<meta name=\"twitter:data2\" content=\"4 \u043c\u0438\u043d\u0443\u0442\u044b\" \/>\n<script type=\"application\/ld+json\" class=\"yoast-schema-graph\">{\"@context\":\"https:\\\/\\\/schema.org\",\"@graph\":[{\"@type\":\"Article\",\"@id\":\"https:\\\/\\\/hsmagnet.com\\\/2024\\\/10\\\/21\\\/electropermanent-magnet\\\/#article\",\"isPartOf\":{\"@id\":\"https:\\\/\\\/hsmagnet.com\\\/2024\\\/10\\\/21\\\/electropermanent-magnet\\\/\"},\"author\":{\"name\":\"Jacky Wang\",\"@id\":\"https:\\\/\\\/hsmagnet.com\\\/#\\\/schema\\\/person\\\/2042961b22b388427c42af00bf3eb9fd\"},\"headline\":\"What is an Electropermanent Magnet (EPM)? 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