{"id":4373,"date":"2023-04-18T05:25:49","date_gmt":"2023-04-18T05:25:49","guid":{"rendered":"https:\/\/hsmagnet.com\/?p=4373"},"modified":"2025-09-05T07:14:02","modified_gmt":"2025-09-05T07:14:02","slug":"%d1%80%d0%b0%d0%b7%d0%bd%d0%b8%d1%86%d0%b0-%d0%bc%d0%b5%d0%b6%d0%b4%d1%83-%d0%b4%d0%b2%d0%b8%d0%b3%d0%b0%d1%82%d0%b5%d0%bb%d1%8f%d0%bc%d0%b8-bldc-%d0%b8-pmsm","status":"publish","type":"post","link":"https:\/\/hsmagnet.com\/ru\/2023\/04\/18\/the-difference-between-bldc-and-pmsm-motors\/","title":{"rendered":"\u0414\u0432\u0438\u0433\u0430\u0442\u0435\u043b\u0438 BLDC \u0438 PMSM: \u0432 \u0447\u0435\u043c \u0440\u0435\u0430\u043b\u044c\u043d\u0430\u044f \u0440\u0430\u0437\u043d\u0438\u0446\u0430?"},"content":{"rendered":"\n<p class=\"wp-block-paragraph\">Navigating the world of brushless motors can be confusing. While <strong>brushless DC (BLDC)<\/strong> and <strong>permanent magnet synchronous motors (PMSM)<\/strong> are both brushless, they are not the same. Understanding their key differences is crucial for selecting the right motor for your application.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">The core distinction lies in their design and how they are controlled.<\/p>\n\n\n\n<!--more-->\n\n\n<div class=\"root-eb-toc-m1463 wp-block-essential-blocks-table-of-contents\"><div class=\"eb-parent-wrapper eb-parent-eb-toc-m1463 \"><div class=\"eb-toc-container eb-toc-m1463  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;1. Back EMF: The Fundamental Difference&quot;,&quot;text&quot;:&quot;1. Back EMF: The Fundamental Difference&quot;,&quot;link&quot;:&quot;1-back-emf-the-fundamental-difference&quot;},{&quot;level&quot;:2,&quot;content&quot;:&quot;2. Control Strategy: Simple vs. Precise&quot;,&quot;text&quot;:&quot;2. Control Strategy: Simple vs. Precise&quot;,&quot;link&quot;:&quot;2-control-strategy-simple-vs-precise&quot;},{&quot;level&quot;:2,&quot;content&quot;:&quot;3. Performance and Applications&quot;,&quot;text&quot;:&quot;3. Performance and Applications&quot;,&quot;link&quot;:&quot;3-performance-and-applications&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;1. Back EMF: The Fundamental Difference&quot;,&quot;value&quot;:&quot;1-back-emf-the-fundamental-difference&quot;,&quot;isDelete&quot;:false},{&quot;label&quot;:&quot;2. Control Strategy: Simple vs. Precise&quot;,&quot;value&quot;:&quot;2-control-strategy-simple-vs-precise&quot;,&quot;isDelete&quot;:false},{&quot;label&quot;:&quot;3. Performance and Applications&quot;,&quot;value&quot;:&quot;3-performance-and-applications&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=\"#1-back-emf-the-fundamental-difference\">1. Back EMF: The Fundamental Difference<\/a><li><a href=\"#2-control-strategy-simple-vs-precise\">2. Control Strategy: Simple vs. Precise<\/a><li><a href=\"#3-performance-and-applications\">3. Performance and Applications<\/a><li><a href=\"#conclusion\">Conclusion<\/a><\/ul><\/div><\/div><\/div><\/div><\/div>\n\n\n<h2 class=\"wp-block-heading\"><strong>1. Back EMF: The Fundamental Difference<\/strong><\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">The most important difference between these two motor types is the shape of their <strong>Back Electromotive Force (BEMF)<\/strong>. This is the voltage generated by the motor as it rotates.<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><strong>BLDC Motors<\/strong> are designed to have a <strong>trapezoidal BEMF<\/strong> waveform. This shape is created by a magnetic field that is nearly uniform across each pole.<\/li>\n\n\n\n<li><strong>PMSM Motors<\/strong> are designed to have a <strong>sinusoidal BEMF<\/strong> waveform. This is achieved through a more complex magnetic field design that varies smoothly across each pole.<\/li>\n<\/ul>\n\n\n\n<p class=\"wp-block-paragraph\">This single difference dictates the type of control, performance, and optimal use case for each motor.<\/p>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\"\/>\n\n\n\n<h2 class=\"wp-block-heading\"><strong>2. Control Strategy: Simple vs. Precise<\/strong><\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">The BEMF waveform directly determines the most effective way to drive the motor.<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><strong>BLDC Control:<\/strong> Because of its trapezoidal BEMF, a BLDC motor is most efficiently controlled with <strong>trapezoidal (or six-step) commutation<\/strong>. The controller switches the current to the motor&#8217;s phases in a simple, step-by-step sequence. This control method is easy to implement and cost-effective, but it can lead to higher torque ripple and noise.<\/li>\n\n\n\n<li><strong>PMSM Control:<\/strong> The sinusoidal BEMF of a PMSM motor is best controlled using <strong>Field-Oriented Control (FOC)<\/strong>. This advanced method uses complex algorithms to continuously adjust the current in a smooth sine wave. FOC delivers extremely smooth torque, high efficiency, and quiet operation, but it requires a more powerful microprocessor and a high-resolution position sensor.<\/li>\n<\/ul>\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\/2023\/04\/A-cross-section-diagram-illustrating-the-difference-between-a-BLDC-motors-concentrated-stator-windings-and-a-PMSM-motors-distributed-stator-windings-1024x683.webp\" alt=\"A cross-section diagram illustrating the difference between a BLDC motor's concentrated stator windings and a PMSM motor's distributed stator windings.\" class=\"wp-image-13576\" srcset=\"https:\/\/hsmagnet.com\/wp-content\/uploads\/2023\/04\/A-cross-section-diagram-illustrating-the-difference-between-a-BLDC-motors-concentrated-stator-windings-and-a-PMSM-motors-distributed-stator-windings-1024x683.webp 1024w, https:\/\/hsmagnet.com\/wp-content\/uploads\/2023\/04\/A-cross-section-diagram-illustrating-the-difference-between-a-BLDC-motors-concentrated-stator-windings-and-a-PMSM-motors-distributed-stator-windings-300x200.webp 300w, https:\/\/hsmagnet.com\/wp-content\/uploads\/2023\/04\/A-cross-section-diagram-illustrating-the-difference-between-a-BLDC-motors-concentrated-stator-windings-and-a-PMSM-motors-distributed-stator-windings-768x512.webp 768w, https:\/\/hsmagnet.com\/wp-content\/uploads\/2023\/04\/A-cross-section-diagram-illustrating-the-difference-between-a-BLDC-motors-concentrated-stator-windings-and-a-PMSM-motors-distributed-stator-windings-600x400.webp 600w, https:\/\/hsmagnet.com\/wp-content\/uploads\/2023\/04\/A-cross-section-diagram-illustrating-the-difference-between-a-BLDC-motors-concentrated-stator-windings-and-a-PMSM-motors-distributed-stator-windings.webp 1536w\" sizes=\"auto, (max-width: 1024px) 100vw, 1024px\" \/><\/figure>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\"\/>\n\n\n\n<h2 class=\"wp-block-heading\"><strong>3. Performance and Applications<\/strong><\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">While both motors are excellent for a wide range of tasks, their distinct characteristics make them better suited for different applications.<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><strong>BLDC Motors:<\/strong> Their simple control and high torque density make them a great choice for <strong>cost-sensitive applications<\/strong> where high performance is not the absolute priority. They are often found in:\n<ul class=\"wp-block-list\">\n<li>Power tools<\/li>\n\n\n\n<li>Home appliances<\/li>\n\n\n\n<li>RC vehicles and drones<\/li>\n\n\n\n<li>Computer fans<\/li>\n<\/ul>\n<\/li>\n\n\n\n<li><strong>PMSM Motors:<\/strong> Their smooth torque, high efficiency, and precise control are ideal for <strong>high-performance and high-precision applications<\/strong>. They are commonly used in:\n<ul class=\"wp-block-list\">\n<li>Robotics and automation<\/li>\n\n\n\n<li>Electric vehicles (EVs)<\/li>\n\n\n\n<li>Industrial pumps and compressors<\/li>\n\n\n\n<li>Medical equipment<\/li>\n<\/ul>\n<\/li>\n<\/ul>\n\n\n\n<h2 class=\"wp-block-heading\">Conclusion<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">In summary, the choice between a BLDC and a PMSM motor depends on your specific needs. If you require simple, cost-effective, and robust performance, a BLDC motor is likely the best choice. If your application demands exceptional smoothness, high efficiency, and precision, a PMSM motor is the superior solution.<\/p>\n","protected":false},"excerpt":{"rendered":"<p>\u041e\u0440\u0438\u0435\u043d\u0442\u0438\u0440\u043e\u0432\u0430\u0442\u044c\u0441\u044f \u0432 \u043c\u0438\u0440\u0435 \u0431\u0435\u0441\u0449\u0451\u0442\u043e\u0447\u043d\u044b\u0445 \u0434\u0432\u0438\u0433\u0430\u0442\u0435\u043b\u0435\u0439 \u043c\u043e\u0436\u0435\u0442 \u0431\u044b\u0442\u044c \u043d\u0435\u043f\u0440\u043e\u0441\u0442\u043e. \u0425\u043e\u0442\u044f \u0431\u0435\u0441\u0449\u0451\u0442\u043e\u0447\u043d\u044b\u0435 \u0434\u0432\u0438\u0433\u0430\u0442\u0435\u043b\u0438 \u043f\u043e\u0441\u0442\u043e\u044f\u043d\u043d\u043e\u0433\u043e \u0442\u043e\u043a\u0430 (BLDC) \u0438 \u0441\u0438\u043d\u0445\u0440\u043e\u043d\u043d\u044b\u0435 \u0434\u0432\u0438\u0433\u0430\u0442\u0435\u043b\u0438 \u0441 \u043f\u043e\u0441\u0442\u043e\u044f\u043d\u043d\u044b\u043c\u0438 \u043c\u0430\u0433\u043d\u0438\u0442\u0430\u043c\u0438 (PMSM) \u044f\u0432\u043b\u044f\u044e\u0442\u0441\u044f \u0431\u0435\u0441\u0449\u0451\u0442\u043e\u0447\u043d\u044b\u043c\u0438, \u044d\u0442\u043e \u043d\u0435 \u043e\u0434\u043d\u043e \u0438 \u0442\u043e \u0436\u0435. \u041f\u043e\u043d\u0438\u043c\u0430\u043d\u0438\u0435 \u0438\u0445 \u043a\u043b\u044e\u0447\u0435\u0432\u044b\u0445 \u0440\u0430\u0437\u043b\u0438\u0447\u0438\u0439 \u043a\u0440\u0430\u0439\u043d\u0435 \u0432\u0430\u0436\u043d\u043e \u0434\u043b\u044f \u0432\u044b\u0431\u043e\u0440\u0430 \u043f\u043e\u0434\u0445\u043e\u0434\u044f\u0449\u0435\u0433\u043e \u0434\u0432\u0438\u0433\u0430\u0442\u0435\u043b\u044f \u0434\u043b\u044f \u0432\u0430\u0448\u0435\u0439 \u0437\u0430\u0434\u0430\u0447\u0438. \u041e\u0441\u043d\u043e\u0432\u043d\u043e\u0435 \u0440\u0430\u0437\u043b\u0438\u0447\u0438\u0435 \u0437\u0430\u043a\u043b\u044e\u0447\u0430\u0435\u0442\u0441\u044f \u0432 \u0438\u0445 \u043a\u043e\u043d\u0441\u0442\u0440\u0443\u043a\u0446\u0438\u0438 \u0438 \u0441\u043f\u043e\u0441\u043e\u0431\u0435 \u0443\u043f\u0440\u0430\u0432\u043b\u0435\u043d\u0438\u044f.<\/p>","protected":false},"author":1,"featured_media":13575,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"_acf_changed":false,"_eb_attr":"","footnotes":""},"categories":[22],"tags":[29,30],"class_list":["post-4373","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-magnetic-applicaitons","tag-motor","tag-pmsm"],"acf":[],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v27.8 - https:\/\/yoast.com\/product\/yoast-seo-wordpress\/ -->\n<title>BLDC vs. PMSM Motors: What&#039;s the Key Difference?<\/title>\n<meta name=\"description\" content=\"Understand the fundamental differences between BLDC and PMSM motors, from their Back EMF to control strategies, and learn which motor is right for your 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