{"id":5858,"date":"2023-05-09T14:51:50","date_gmt":"2023-05-09T06:51:50","guid":{"rendered":"https:\/\/www.ray-tron.com\/?p=5858"},"modified":"2023-09-01T14:01:22","modified_gmt":"2023-09-01T06:01:22","slug":"ele5774","status":"publish","type":"post","link":"https:\/\/www.ray-tron.com\/en\/ele5774\/","title":{"rendered":"Solar cell module power calculation formula"},"content":{"rendered":"

How to calculateSolar Cells<\/a>Power of components<\/strong><\/p>\n

Module efficiency = module power\/module area (module length * module width) * (1000W\/m2) * 100%.<\/p>\n

Cell efficiency = module power \/ (area of each cell * number of cells) * (1000W\/m2) \/ (1-power loss) * 100%.<\/p>\n

Power loss is generated during the process of cell encapsulation module. It mainly consists of two parts: one is the structural change, mainly the glass and EVA materials reduce the input and absorption of light; the other is the electrical connection loss, mainly the loss caused by connection materials such as welding strips.<\/p>\n

Generally speaking, the packaging loss of polycrystalline uncoated glass is about 3-3.5%, coated glass is about 1.5%-2%, and single crystal is about 3-3.5%.<\/p>\n

The meaning and process difference between less grid and more grid<\/strong><\/p>\n

Compared with batteries with fewer grid lines, the filling volume is larger. But there seems to be no advantage in terms of power. With fewer grids, the current is slightly higher and the filling degree is low; with more grids, the current is slightly lower and the filling degree is high. In order to increase the filling factor and reduce the series resistance of the component, component manufacturers have developed multi-grid batteries. There is also consideration of customer needs. Because multi-grid has more main grids, the shading area is larger, and the more main grids are connected in series, the smaller the filling volume is. Therefore, under the same wafer and process, the current of multi-grid is smaller than that of less grid, and the filling volume is higher.<\/p>\n

The battery technician said that for ordinary batteries, multi-gate and low-gate are similar. For high-efficiency batteries, because the current of high-efficiency batteries is relatively large, the series connection should be reduced. According to the printed standards marked by the workshop, the luminous area of multi-gate batteries is smaller than that of low-gate batteries. Multi-gate has better sedimentation effect, which simply means that the distance the current runs is shorter. Because the resistance inside the semiconductor is greater than the resistance inside the conductor, the resistance of the multi-gate battery will be smaller.<\/p>\n

\"\"

The main parameters affecting solar panels<\/strong><\/p>\n

a) Parameters under STC standard test conditions: The existing main nominal data are based on STC conditions, i.e.<\/p>\n

1. Ground 2. Light intensity 1000W\/m2 3. Air quality AM1.5 4. Temperature 25\u2103 (battery temperature)<\/p>\n

b) NOCT module normal working parameters: that is, the parameters under the conditions of 800W\/m2, AM1.5, wind speed 1m\/s, and ambient temperature 20\u2103, which are mainly used as important reference values for customers, because in actual work, the parameters under this condition are closer to the actual situation.<\/p>\n

c) Voc open circuit voltage: refers to the voltage value of the component when there is no load, that is, the maximum voltage in this case.<\/p>\n

d) Isc short-circuit current: The current when the positive and negative poles of a component are directly connected without load. In this case, the current is the largest.<\/p>\n

e) Vmpp Maximum Peak Voltage: The voltage value at the maximum power point.<\/p>\n

f) Impp Maximum Peak Current: The current value at maximum output power.<\/p>\n

g) Temperature coefficient:<\/p>\n

Certain properties of a material change as the temperature changes. When we talk about the temperature coefficient, we mean how quickly the physical properties of a material change with temperature.<\/p>\n

For components, this parameter characterizes how the current, voltage, and power of the component change with temperature. Currently, there are only three temperature coefficient values in our specifications: open circuit voltage, short circuit current, and peak power. Only short circuit current is positively correlated with temperature, while voltage and power are negatively correlated. In other words, short circuit current will increase with increasing temperature, while voltage and power will decrease with increasing temperature.<\/p>","protected":false},"excerpt":{"rendered":"

How to calculate the power of solar cell modules? Module efficiency = module power \/ module area (module length * module width) * (1000W\/m2) * 1 [\u2026]<\/p>","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"site-sidebar-layout":"default","site-content-layout":"default","ast-site-content-layout":"","site-content-style":"default","site-sidebar-style":"default","ast-global-header-display":"","ast-banner-title-visibility":"","ast-main-header-display":"","ast-hfb-above-header-display":"","ast-hfb-below-header-display":"","ast-hfb-mobile-header-display":"","site-post-title":"","ast-breadcrumbs-content":"","ast-featured-img":"","footer-sml-layout":"","theme-transparent-header-meta":"default","adv-header-id-meta":"","stick-header-meta":"default","header-above-stick-meta":"","header-main-stick-meta":"","header-below-stick-meta":"","astra-migrate-meta-layouts":"default","ast-page-background-enabled":"default","ast-page-background-meta":{"desktop":{"background-color":"","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""},"tablet":{"background-color":"","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""},"mobile":{"background-color":"","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""}},"ast-content-background-meta":{"desktop":{"background-color":"var(--ast-global-color-5)","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""},"tablet":{"background-color":"var(--ast-global-color-5)","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""},"mobile":{"background-color":"var(--ast-global-color-5)","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""}},"footnotes":""},"categories":[19],"tags":[253,232],"class_list":["post-5858","post","type-post","status-publish","format-standard","hentry","category-blog","tag-blog","tag-guangfuzujian"],"_links":{"self":[{"href":"https:\/\/www.ray-tron.com\/en\/wp-json\/wp\/v2\/posts\/5858","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.ray-tron.com\/en\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.ray-tron.com\/en\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.ray-tron.com\/en\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/www.ray-tron.com\/en\/wp-json\/wp\/v2\/comments?post=5858"}],"version-history":[{"count":0,"href":"https:\/\/www.ray-tron.com\/en\/wp-json\/wp\/v2\/posts\/5858\/revisions"}],"wp:attachment":[{"href":"https:\/\/www.ray-tron.com\/en\/wp-json\/wp\/v2\/media?parent=5858"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.ray-tron.com\/en\/wp-json\/wp\/v2\/categories?post=5858"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.ray-tron.com\/en\/wp-json\/wp\/v2\/tags?post=5858"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}