{"id":11430,"date":"2025-01-23T15:25:26","date_gmt":"2025-01-23T15:25:26","guid":{"rendered":"https:\/\/www.autolexicon.net\/?p=11430"},"modified":"2025-02-25T10:10:50","modified_gmt":"2025-02-25T10:10:50","slug":"vykonova-elektronika","status":"publish","type":"post","link":"https:\/\/www.autolexicon.net\/en\/articles\/vykonova-elektronika\/","title":{"rendered":"Power electronics"},"content":{"rendered":"<p><\/p>\n<p style=\"text-align: justify;\"><span style=\"font-family: verdana, geneva, sans-serif; font-size: 10pt;\"><strong>Power electronics are the essential control unit of any electrified powertrain.<\/strong> They are therefore a crucial component not only in fully electric vehicles like <a href=\"https:\/\/www.autolexicon.net\/articles\/bev-battery-electic-vehicle\/\">BEVs<\/a> but also in hybrid vehicles such as <a href=\"https:\/\/www.autolexicon.net\/articles\/phev-plug-in-hybrid-electric-vehicle\/\">PHEVs<\/a> and <a href=\"https:\/\/www.autolexicon.net\/articles\/hev-hybrid-electric-vehicle\/\">HEVs<\/a>. Thanks to power electronics, electric cars can use the energy from the battery efficiently or, conversely, store kinetic energy stored during braking using <a href=\"https:\/\/www.autolexicon.net\/articles\/regenerativni-brzdeni\/\">regenerative braking<\/a>. Power electronics also manage the battery charging process. Another important function is converting DC voltage to various voltage levels (12V\/48V\/400V\/800V). The proper and efficient operation of power electronics in these functions depends primarily on advanced semiconductor circuits. These circuits must ensure efficient energy conversion according to current demands, minimize losses, and withstand high temperatures and challenging operating conditions.<\/span><\/p>\n<p style=\"text-align: justify;\"><span style=\"font-family: verdana, geneva, sans-serif; font-size: 10pt;\"><strong>A car that uses an electric or electric-hybrid drive system must be able to run on both DC and AC power.<\/strong> The traction battery provides energy in DC, whereas electric motors require three-phase AC for their operation. The power electronics module performs this conversion, adapting the energy type and optimizing its flow.<\/span><\/p>\n<p style=\"text-align: justify;\"><span style=\"font-family: verdana, geneva, sans-serif; font-size: 10pt;\">For fast chargers that provide direct DC power, the vehicle&#8217;s power electronics monitor and manage the energy flow to ensure safe and efficient battery charging, protecting it from overvoltage or overheating, and optimizing charging speed. This process contributes to a safe, reliable, and quick energy replenishment for the electric vehicle.<\/span><\/p>\nngg_shortcode_9_placeholder\n<hr \/>\n<h2><strong><span style=\"font-family: verdana, geneva, sans-serif; font-size: 14pt;\">Cross-section of Power Electronics<\/span><\/strong><\/h2>\n<p style=\"text-align: justify;\"><span style=\"font-family: verdana, geneva, sans-serif; font-size: 10pt;\">The power electronics module has a compact design and is often directly attached to the electric motor. <strong>The entire module weighs approximately eight kilograms.<\/strong> It includes its cooling system, as it is exposed to significant thermal stress.<\/span><\/p>\n<p style=\"text-align: center;\"><a href=\"https:\/\/www.autolexicon.net\/obr_clanky\/vykonova-elektronika___006-scaled.jpg\"><img loading=\"lazy\" decoding=\"async\" class=\"alignnone wp-image-11437 size-large\" title=\"Power Electronics\" src=\"https:\/\/www.autolexicon.net\/obr_clanky\/vykonova-elektronika___006-600x424.jpg\" alt=\"Power Electronics\" width=\"600\" height=\"424\" srcset=\"https:\/\/www.autolexicon.net\/obr_clanky\/vykonova-elektronika___006-600x424.jpg 600w, https:\/\/www.autolexicon.net\/obr_clanky\/vykonova-elektronika___006-250x177.jpg 250w, https:\/\/www.autolexicon.net\/obr_clanky\/vykonova-elektronika___006-141x100.jpg 141w, https:\/\/www.autolexicon.net\/obr_clanky\/vykonova-elektronika___006-768x543.jpg 768w, https:\/\/www.autolexicon.net\/obr_clanky\/vykonova-elektronika___006-1536x1086.jpg 1536w, https:\/\/www.autolexicon.net\/obr_clanky\/vykonova-elektronika___006-2048x1448.jpg 2048w\" sizes=\"auto, (max-width: 600px) 100vw, 600px\" \/><\/a><\/p>\n<p><iframe loading=\"lazy\" title=\"Audi e-tron Power electronics e-engine (animation)\" width=\"800\" height=\"450\" src=\"https:\/\/www.youtube.com\/embed\/dKxI-g9UeT8?feature=oembed\" frameborder=\"0\" allow=\"accelerometer; autoplay; clipboard-write; encrypted-media; gyroscope; picture-in-picture; web-share\" referrerpolicy=\"strict-origin-when-cross-origin\" allowfullscreen><\/iframe><\/p>\n<hr \/>\n<h2><strong><span style=\"font-family: verdana, geneva, sans-serif; font-size: 14pt;\">How Power Electronics Work in an EV:<\/span><\/strong><\/h2>\n<p style=\"text-align: justify;\"><span style=\"font-family: verdana, geneva, sans-serif; font-size: 10pt;\">The power electronics module comprises several components, each fulfilling a specific function. When the vehicle is charged from a home power outlet (e.g., 220V), the <strong>rectifier [1]<\/strong> converts AC to DC, which is then stored in the high-voltage battery.<\/span><\/p>\n<p style=\"text-align: justify;\"><span style=\"font-family: verdana, geneva, sans-serif; font-size: 10pt;\">Another component, the <strong>DC converter [2]<\/strong>, reduces the high voltage from the traction battery (e.g., 400V or 800V) to the low-voltage level of the onboard system (12V). In EVs, as in conventional vehicles, the onboard network operates at 12V, making direct connection of standard electronics to the traction battery impossible.<\/span><\/p>\n<p style=\"text-align: justify;\"><span style=\"font-family: verdana, geneva, sans-serif; font-size: 10pt;\"><strong>The inverter [4]<\/strong> regulates the speed and torque of the electric motor, modulating its performance characteristics. It converts DC from the battery to three-phase AC required by the electric motor.<\/span><\/p>\nngg_shortcode_10_placeholder\n<p style=\"text-align: right;\"><strong><span style=\"font-family: verdana, geneva, sans-serif; font-size: 10pt;\"><em>Renault Zoe Power Unit and Power Electronics Cross-Section<\/em><\/span><\/strong><\/p>\n<hr \/>\n<h2><strong><span style=\"font-family: verdana, geneva, sans-serif; font-size: 14pt;\">Did You Know:<\/span><\/strong><\/h2>\n<h2><strong><span style=\"font-family: verdana, geneva, sans-serif; font-size: 14pt;\">Number of Power Electronics Units<\/span><\/strong><\/h2>\n<p style=\"text-align: justify;\"><span style=\"font-family: verdana, geneva, sans-serif; font-size: 10pt;\">If an EV has multiple electric motors, it is typically equipped with a corresponding number of power electronics units, where <strong>each unit is responsible for managing one specific motor.<\/strong><\/span><\/p>\nngg_shortcode_11_placeholder\n<p style=\"text-align: justify;\"><span style=\"font-family: verdana, geneva, sans-serif; font-size: 10pt;\">Dividing power management across multiple units offers <strong>several advantages<\/strong>. Each motor and its electronics can be optimized for their specific tasks. For example, in all-wheel-drive EVs, the front and rear motors may have different characteristics, such as power, speed, or the ability to handle specific driving modes like <a href=\"https:\/\/www.autolexicon.net\/articles\/akcelerace\">acceleration<\/a>, slippery surfaces, or off-road driving.<\/span><\/p>\n<hr \/>\n<h2><strong><span style=\"font-family: verdana, geneva, sans-serif; font-size: 14pt;\">Power Electronics Impact on Charging Time<\/span><\/strong><\/h2>\n<p style=\"text-align: justify;\"><span style=\"font-family: verdana, geneva, sans-serif; font-size: 10pt;\">Charging speed can be affected by the power electronics, as their <strong>maximum performance depends on the design and capacity of individual components<\/strong>, such as semiconductor converters or cooling systems. If power electronics are designed for lower performance, they may limit charging speed, even if the battery can accept higher power and the charging station can deliver it.<\/span><\/p>\n<p style=\"text-align: justify;\"><span style=\"font-family: verdana, geneva, sans-serif; font-size: 10pt;\">Additionally, power electronics regulate the entire charging process to protect the system from overheating, overloading, or other damage. For example, at high temperatures or when a higher charge level is reached, they may reduce charging speed to protect the battery and ensure safety. To enable fast and efficient charging, both the vehicle and charging infrastructure require adequately powerful electronics.<\/span><\/p>\n<p><\/p>","protected":false},"excerpt":{"rendered":"<p>Power electronics is a very important and integral part of the powertrain unit of every electric vehicle. The power electronics of an electric drive system control the transfer of energy between the main components of electric vehicles, such as the battery, the electric motor, and the charger. The efficiency of a given electric drive is significantly influenced by the architecture of the power electronics.<\/p>\n","protected":false},"author":1,"featured_media":11444,"comment_status":"closed","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"colormag_page_container_layout":"default_layout","colormag_page_sidebar_layout":"default_layout","rop_custom_images_group":[],"rop_custom_messages_group":[],"rop_publish_now":"yes","rop_publish_now_accounts":{"facebook_10217573569066608_119527941460186":"","twitter_308591058_308591058":""},"rop_publish_now_history":[],"rop_publish_now_status":"pending","ngg_post_thumbnail":0,"two_page_speed":[],"footnotes":""},"categories":[1,11,1473,50,8,1315,86,12,828,4],"tags":[1023,1409,1475],"class_list":["post-11430","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-nezarazene","category-aktivni-bezpecnost","category-elektromobilita","category-elektrotechnika","category-hnaci-ustroji","category-osobnosti-automobilismu","category-palivo-a-provozni-naplne","category-pasivni-bezpecnost","category-pneumatiky-a-rafky","category-casti-automobilu","tag-electric-vehicle","tag-elektromobilita","tag-vykonova-elektronika"],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v27.4 - https:\/\/yoast.com\/product\/yoast-seo-wordpress\/ -->\n<title>Power electronics - autolexicon.net<\/title>\n<meta name=\"description\" content=\"V\u00fdkonov\u00e1 elektronika je velmi d\u016fle\u017eitou a ned\u00edlnou sou\u010d\u00e1st\u00ed pohonn\u00e9 jednotky ka\u017ed\u00e9ho elektromobilu. 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