{"id":9076,"date":"2024-09-05T08:30:52","date_gmt":"2024-09-05T07:30:52","guid":{"rendered":"https:\/\/azimut360.coop\/2024\/09\/reptes-clau-de-la-fotovoltaica-causes-impacte-i-prevencio\/"},"modified":"2024-10-14T17:07:03","modified_gmt":"2024-10-14T16:07:03","slug":"key-challenges-photovoltaics-causes-impact-prevention","status":"publish","type":"post","link":"https:\/\/azimut360.coop\/en\/2024\/09\/key-challenges-photovoltaics-causes-impact-prevention\/","title":{"rendered":"Key Challenges of Photovoltaics: Causes, Impact, and Prevention"},"content":{"rendered":"<div class=\"wpb-content-wrapper\"><p>[vc_row][vc_column width=&#8221;1\/1&#8243;][vc_custom_heading heading_semantic=&#8221;h1&#8243; uncode_shortcode_id=&#8221;175477&#8243;]Key Challenges of Photovoltaics: Causes, Impact, and Prevention[\/vc_custom_heading][vc_single_image media=&#8221;8877&#8243; media_width_percent=&#8221;100&#8243; uncode_shortcode_id=&#8221;204203&#8243;][vc_column_text uncode_shortcode_id=&#8221;520948&#8243;]When a photovoltaic installation operates optimally, ensuring a safe and reliable electricity supply, it can become a large-scale power source. However, photovoltaic technology faces major daily challenges in terms of quality, installation, operation, and decommissioning. Below, we describe five main challenges facing photovoltaic technology:[\/vc_column_text][vc_custom_heading uncode_shortcode_id=&#8221;182772&#8243;]Derating[\/vc_custom_heading][vc_custom_heading heading_semantic=&#8221;h3&#8243; uncode_shortcode_id=&#8221;188895&#8243;]<\/p>\n<h3>What is Derating?<\/h3>\n<p>[\/vc_custom_heading][vc_column_text uncode_shortcode_id=&#8221;193979&#8243;]Derating refers to the power reduction in photovoltaic inverters caused by environmental factors such as heat, altitude, and voltage. In extreme situations, this phenomenon can even stop production. This effect is especially noticeable in areas with high temperatures.[\/vc_column_text][vc_custom_heading heading_semantic=&#8221;h3&#8243; uncode_shortcode_id=&#8221;198182&#8243;]Causes of Derating[\/vc_custom_heading][vc_column_text uncode_shortcode_id=&#8221;147225&#8243;]The main causes of derating are:<\/p>\n<ul>\n<li><strong>Temperature<\/strong>: When inverters generate heat while converting direct current (DC) into alternating current (AC) and the ambient temperature is high, the inverters reduce their power to protect internal components.<\/li>\n<li><strong>Altitude<\/strong>: At high altitudes, the low air density facilitates ionization at high voltages, affecting inverter performance.<\/li>\n<li><strong>DC voltage<\/strong>: Maintaining the proper operating voltage range is essential to avoid derating.<\/li>\n<\/ul>\n<p>[\/vc_column_text][vc_custom_heading heading_semantic=&#8221;h3&#8243; uncode_shortcode_id=&#8221;192842&#8243;]How to Prevent Derating<br \/>\n[\/vc_custom_heading][vc_column_text uncode_shortcode_id=&#8221;740869&#8243;]To avoid it, several actions can be taken:<\/p>\n<ul>\n<li>Proper installation: Follow the manufacturer&#8217;s recommendations for ventilation and avoid direct sun exposure.<\/li>\n<li>Quality of equipment: Choose high-quality inverters with efficient ventilation systems, either by convection or forced ventilation.<\/li>\n<li>Regular monitoring: Conduct periodic inspections to ensure optimal performance.<\/li>\n<\/ul>\n<p>[\/vc_column_text][vc_custom_heading uncode_shortcode_id=&#8221;802139&#8243;]LID Effect (Light-Induced Degradation)<br \/>\n[\/vc_custom_heading][vc_custom_heading heading_semantic=&#8221;h3&#8243; uncode_shortcode_id=&#8221;162581&#8243;]What is the LID Effect?[\/vc_custom_heading][vc_column_text uncode_shortcode_id=&#8221;612367&#8243;]The LID effect refers to the degradation of photovoltaic modules caused by chemical reactions in silicon cells, leading to a loss of power and efficiency during the first months of solar exposure. This can result in a reduction of up to 10% of the initial power.[\/vc_column_text][vc_custom_heading heading_semantic=&#8221;h3&#8243; uncode_shortcode_id=&#8221;696857&#8243;]Causes of the LID Effect<br \/>\n[\/vc_custom_heading][vc_column_text uncode_shortcode_id=&#8221;181068&#8243;]The main cause of this effect is the reaction of boron with elements such as oxygen, iron, or copper present in the silicon cell. While boron is crucial for generating electricity, these reactions reduce electron flow, affecting the module\u2019s efficiency.<\/p>\n<p>Monocrystalline P-type modules are especially vulnerable to LID due to the difficulty in completely eliminating oxygen during the manufacturing process. In contrast, N-type cells, doped with phosphorus, show greater resistance to this effect.[\/vc_column_text][vc_custom_heading heading_semantic=&#8221;h3&#8243; uncode_shortcode_id=&#8221;205960&#8243;]How to Prevent the LID Effect?[\/vc_custom_heading][vc_column_text uncode_shortcode_id=&#8221;951491&#8243;]<\/p>\n<ul>\n<li>Applying high temperatures and currents.<\/li>\n<li>Using advanced technologies such as lasers or LEDs.<\/li>\n<li>Eliminating oxygen within the cell, though this is costly.<\/li>\n<li>Replacing boron with gallium.<\/li>\n<\/ul>\n<p>[\/vc_column_text][vc_custom_heading heading_semantic=&#8221;h3&#8243; uncode_shortcode_id=&#8221;121991&#8243;]<\/p>\n<h2>Hotspot<\/h2>\n<p>[\/vc_custom_heading][vc_custom_heading heading_semantic=&#8221;h3&#8243; uncode_shortcode_id=&#8221;154844&#8243;]<\/p>\n<h3>What is a Hotspot?<\/h3>\n<p>[\/vc_custom_heading][vc_column_text uncode_shortcode_id=&#8221;178378&#8243;]A hotspot is a localized area within a photovoltaic module that overheats, potentially damaging the module or, in extreme cases, causing a fire. This issue arises from high resistance in a specific area, turning it into an electricity consumer that generates heat, exceeding 200\u00b0C.[\/vc_column_text][vc_custom_heading heading_semantic=&#8221;h3&#8243; uncode_shortcode_id=&#8221;198263&#8243;]<\/p>\n<h3>Causes of Hotspots in Photovoltaic Modules<\/h3>\n<p>[\/vc_custom_heading][vc_column_text uncode_shortcode_id=&#8221;128229&#8243;]Hotspots can be caused by internal defects, shading, broken solder joints due to poor manufacturing, or improper handling. Other factors include accumulated dirt and permanent obstacles like trees or chimneys.[\/vc_column_text][vc_custom_heading heading_semantic=&#8221;h3&#8243; uncode_shortcode_id=&#8221;752030&#8243;]Prevention of Hotspots[\/vc_custom_heading][vc_column_text uncode_shortcode_id=&#8221;178358&#8243;]<\/p>\n<ul>\n<li>Choose materials from recognized brands with certified manufacturing processes.<\/li>\n<li>Ensure proper transportation of the modules.<\/li>\n<li>Follow the manufacturer\u2019s instructions during installation.<\/li>\n<li>Regularly clean the modules according to site conditions.<\/li>\n<li>Conduct periodic inspections with specialized equipment.<\/li>\n<\/ul>\n<p>[\/vc_column_text][vc_custom_heading uncode_shortcode_id=&#8221;125301&#8243;]<\/p>\n<h2>Delamination<\/h2>\n<p>[\/vc_custom_heading][vc_custom_heading heading_semantic=&#8221;h3&#8243; uncode_shortcode_id=&#8221;206192&#8243;]<\/p>\n<h3>What is Delamination?<\/h3>\n<p>[\/vc_custom_heading][vc_column_text uncode_shortcode_id=&#8221;116994&#8243;]Delamination refers to the loss of adhesion between the different layers that make up a photovoltaic module. This defect can appear shortly after installation but may worsen over the module\u2019s lifetime.[\/vc_column_text][vc_custom_heading heading_semantic=&#8221;h3&#8243; uncode_shortcode_id=&#8221;843832&#8243;]<\/p>\n<h3>Causes of Delamination in a Photovoltaic Module<\/h3>\n<p>[\/vc_custom_heading][vc_column_text uncode_shortcode_id=&#8221;158037&#8243;]Delamination is usually associated with poor manufacturing or the use of low-quality materials. Additionally, improper transportation and handling during installation increase the likelihood of delamination. Environmental factors such as temperature, humidity, and UV radiation accelerate this process, especially in lower-quality modules.[\/vc_column_text][vc_custom_heading heading_semantic=&#8221;h3&#8243; uncode_shortcode_id=&#8221;709295&#8243;]<\/p>\n<h3>Detection and Prevention of Delamination<\/h3>\n<p>[\/vc_custom_heading][vc_column_text uncode_shortcode_id=&#8221;300377&#8243;]Delamination can be identified through visual inspection, observing color changes in the module, white spots on the front, or bubbles on the back.[\/vc_column_text][vc_custom_heading heading_semantic=&#8221;h3&#8243; uncode_shortcode_id=&#8221;206447&#8243;]How to Prevent Delamination?[\/vc_custom_heading][vc_column_text uncode_shortcode_id=&#8221;186500&#8243;]<\/p>\n<ul>\n<li>Purchase materials from trusted brands with certified manufacturing processes.<\/li>\n<li>Ensure proper transportation, keeping the modules palletized and free from additional weight.<\/li>\n<li>Handle the modules carefully during installation, following the manufacturer\u2019s recommendations.<\/li>\n<li>Periodically inspect the plant, performing visual checks and using specialized equipment at least once a year.<\/li>\n<\/ul>\n<p>[\/vc_column_text][vc_custom_heading heading_semantic=&#8221;h3&#8243; uncode_shortcode_id=&#8221;110420&#8243;]<\/p>\n<h3>How Does Delamination Affect Photovoltaic Modules?<\/h3>\n<p>[\/vc_custom_heading][vc_column_text uncode_shortcode_id=&#8221;522875&#8243;]When delamination occurs away from the module\u2019s edge, it can affect performance without posing an immediate safety risk. However, if delamination spreads to the edges, it can allow air and moisture to enter, leading to corrosion and irreversible deterioration of the module, which puts the plant&#8217;s integrity at risk.[\/vc_column_text][vc_custom_heading uncode_shortcode_id=&#8221;278676&#8243;]<\/p>\n<h2>LeTID Effect (Light and Elevated Temperature Induced Degradation)<\/h2>\n<p>[\/vc_custom_heading][vc_custom_heading heading_semantic=&#8221;h3&#8243; uncode_shortcode_id=&#8221;641710&#8243;]<\/p>\n<h3>What is the LeTID Effect?<\/h3>\n<p>[\/vc_custom_heading][vc_column_text uncode_shortcode_id=&#8221;152066&#8243;]The LeTID effect is a phenomenon that affects photovoltaic modules, particularly those using <a href=\"https:\/\/www.cambioenergetico.com\/blog\/celulas-solares-perc\/#:~:text=Una%20c%C3%A9lula%20solar%20PERC%20no,de%20c%C3%A9lulas%20es%20muy%20similar.\"><span style=\"font-weight: 400;\">PERC<\/span><\/a> cells. Discovered in 2012, it causes a power loss due to sunlight exposure, similar to LID, but occurs at operating temperatures above 50\u00b0C, whereas LID occurs at lower temperatures.[\/vc_column_text][vc_custom_heading heading_semantic=&#8221;h3&#8243; uncode_shortcode_id=&#8221;101369&#8243;]<\/p>\n<h3>Causes of the LeTID Effect and How It Is Detected<\/h3>\n<p>[\/vc_custom_heading][vc_column_text uncode_shortcode_id=&#8221;446796&#8243;]Research points to hydrogen as the main culprit. During the cell manufacturing process, hydrogen atoms diffuse from other layers into the active area of the cell. High temperatures in the manufacturing process increase this diffusion, raising the risk of LeTID.<\/p>\n<p>This issue is not visible to the naked eye, as LeTID is detected through an abnormal drop in panel performance. To confirm it, after ruling out other defects such as hotspots or delamination, electroluminescence equipment is used, just like with LID.[\/vc_column_text][vc_custom_heading heading_semantic=&#8221;h3&#8243; uncode_shortcode_id=&#8221;122490&#8243;]<\/p>\n<h3>Preventing the LeTID Effect<\/h3>\n<p>[\/vc_custom_heading][vc_column_text uncode_shortcode_id=&#8221;277223&#8243;]Manufacturers and laboratories are working to better understand and mitigate the effects of LeTID. Some preventive measures in the manufacturing of PERC cells include:<\/p>\n<ul>\n<li>Using materials with low hydrogen content.<\/li>\n<li>Reducing temperatures during cell treatment.<\/li>\n<li>Using thinner wafers.<\/li>\n<\/ul>\n<p>[\/vc_column_text][vc_custom_heading uncode_shortcode_id=&#8221;421080&#8243;]<\/p>\n<h2>What You Need to Know<\/h2>\n<p>[\/vc_custom_heading][vc_column_text uncode_shortcode_id=&#8221;908033&#8243;]To prevent the effects of LID, hotspots, delamination, LeTID, or derating, it is crucial to carefully select both materials and manufacturers, optimize wafer treatment processes, and apply proper practices in transportation, installation, and maintenance of photovoltaic modules. Preventing and detecting these defects not only ensures greater efficiency and a longer lifespan for installations, but also provides significant long-term economic benefits.<\/p>\n<p>In conclusion, the photovoltaic industry faces complex challenges that affect the durability and performance of installations. However, by using high-quality materials, applying advanced technologies, and ensuring proper maintenance, it is possible to mitigate these issues and ensure that installations operate optimally. At Azimut360, we work to provide comprehensive, tailored solutions for preventing and detecting these defects, ensuring that our clients&#8217; photovoltaic installations not only maximize their efficiency but also extend their lifespan, generating sustainable economic benefits in the long term.[\/vc_column_text][\/vc_column][\/vc_row]<\/p>\n<\/div>","protected":false},"excerpt":{"rendered":"<p>Quan una instal\u00b7laci\u00f3 fotovoltaica funciona de manera \u00f2ptima, garantint un subministrament el\u00e8ctric segur<\/p>\n","protected":false},"author":6,"featured_media":8879,"comment_status":"closed","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[89,209,221],"tags":[91,224,225,226],"class_list":["post-9076","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-self-consumption","category-maintenance-and-operation","category-photovoltaic-technologies","tag-autoconsum-en","tag-formacio-en","tag-fotovoltaiques-en","tag-manteniment-en"],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v23.8 - https:\/\/yoast.com\/wordpress\/plugins\/seo\/ -->\n<title>Key Challenges of Photovoltaics: Causes, Impact, and Prevention - Azimut 360 Energia Solar Cooperativa<\/title>\n<meta name=\"description\" content=\"Una instal\u00b7laci\u00f3 fotovoltaica funciona de manera \u00f2ptima, garantint un subministrament el\u00e8ctric\" \/>\n<meta name=\"robots\" content=\"index, follow, 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