{"id":16134,"date":"2022-06-02T16:11:38","date_gmt":"2022-06-02T14:11:38","guid":{"rendered":"https:\/\/mag.ebmpapst.com\/en\/?p=16134"},"modified":"2024-03-12T17:53:16","modified_gmt":"2024-03-12T16:53:16","slug":"ebmpapst-eplains-the-importance-of-frequencies-for-high-performance-fans-and-motors","status":"publish","type":"post","link":"https:\/\/mag.ebmpapst.com\/en\/insights\/ebmpapst-eplains-the-importance-of-frequencies-for-high-performance-fans-and-motors_16134\/","title":{"rendered":"What The Tech:<\/i> The impor\u00adtance of frequen\u00adcies for high-perfor\u00admance fans and motors"},"content":{"rendered":"

Frequen\u00adcies are impor\u00adtant not only in sound studios, but also for fans. A so-called vari\u00adable frequency drive increases the energy effi\u00adciency of high-perfor\u00admance fans and reduces the mechan\u00adical load, which extends the service life of the motors and fans to a maximum. But how does a frequency drive work?<\/p>\n

Every fan with a three-phase motor oper\u00adates under different condi\u00adtions. Logi\u00adcally, then, a supply of uniform AC voltage is suit\u00adable for one device, but less good for another. In order to always obtain the best perfor\u00admance with minimal wear from all devices, a so-called vari\u00adable frequency drive is often connected upstream of large fans with AC motors. They convert the uniform AC voltage provided by the local power grid into an AC voltage, the ampli\u00adtude and frequency of which can be changed. Without this, the fan would only run according to its constant speed \u2013 depending on the local power grid. In Europe, for example, the frequency is 50; in the USA, 60 hertz. A change in speed would there\u00adfore not be possible. By contrast, the speed of the motor can be adjusted contin\u00adu\u00adously from almost zero to the maximum.<\/p>\n

A vari\u00adable frequency drive is installed upstream from the motor and consists of several compo\u00adnents:<\/p>\n

    \n
  1. The recti\u00adfier that initially converts the AC voltage into DC voltage.<\/li>\n
  2. The DC link in which the voltage is smoothed, and inter\u00adfer\u00adence suppressed.<\/li>\n
  3. The inverter, which usually switches the voltage on and off quickly in a fast sequence using pulse width modu\u00adla\u00adtion.<\/li>\n<\/ol>\n

    The frequency of switching on and off produces the new frequency. The vari\u00adable frequency drive there\u00adfore not only changes the frequency but also the ampli\u00adtude. This enables the voltage level to be regu\u00adlated higher or lower in volts. Since the speed is now only as high as required, the motor\u2019s energy consump\u00adtion also reduces the mechan\u00adical load, which extends the service life of the motors and fans to a maximum.<\/p>\n","protected":false},"excerpt":{"rendered":"

    Frequen\u00adcies are impor\u00adtant not only in sound studios, but also for fans. A so-called vari\u00adable frequency drive increases the energy effi\u00adciency of high-perfor\u00ad\u00admance fans and reduces the mechan\u00adical load, which extends the service life of the motors and fans to a maximum. But how does a frequency drive work? Every fan with a three-phase motor [\u2026]<\/p>\n","protected":false},"author":6,"featured_media":0,"comment_status":"open","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"_acf_changed":false,"wp_typography_post_enhancements_disabled":false,"footnotes":""},"categories":[16,4,20,170,169],"tags":[],"class_list":["post-16134","post","type-post","status-publish","format-standard","hentry","category-fans","category-insights","category-motors","category-noteaser","category-what-the-tech"],"acf":[],"_links":{"self":[{"href":"https:\/\/mag.ebmpapst.com\/en\/wp-json\/wp\/v2\/posts\/16134","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/mag.ebmpapst.com\/en\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/mag.ebmpapst.com\/en\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/mag.ebmpapst.com\/en\/wp-json\/wp\/v2\/users\/6"}],"replies":[{"embeddable":true,"href":"https:\/\/mag.ebmpapst.com\/en\/wp-json\/wp\/v2\/comments?post=16134"}],"version-history":[{"count":3,"href":"https:\/\/mag.ebmpapst.com\/en\/wp-json\/wp\/v2\/posts\/16134\/revisions"}],"predecessor-version":[{"id":16146,"href":"https:\/\/mag.ebmpapst.com\/en\/wp-json\/wp\/v2\/posts\/16134\/revisions\/16146"}],"wp:attachment":[{"href":"https:\/\/mag.ebmpapst.com\/en\/wp-json\/wp\/v2\/media?parent=16134"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/mag.ebmpapst.com\/en\/wp-json\/wp\/v2\/categories?post=16134"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/mag.ebmpapst.com\/en\/wp-json\/wp\/v2\/tags?post=16134"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}