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electrical:solar:mppt_design

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electrical:solar:mppt_design [2018/11/20 13:32]
frater_secessus 		electrical:solar:mppt_design [2020/04/10 12:44]
frater_secessus [input voltage]
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 ===== input voltage ===== ===== input voltage =====
  
-Input voltage is a balancing act between absolute efficiency (requires lower input voltage), the ability to overcome self-consumption losses under all conditions (requires higher input voltage), wire size (higher input voltage), and shading mitigation (higher input voltage).+Input voltage is a balancing act between efficiency / heat reduction (requires lower input voltage), the ability to overcome self-consumption losses under all conditions (requires higher input voltage), wire size and length (higher input voltage), and shading mitigation (higher input voltage).
  
  
-MPPT manufacturers always specify a maximum voltage coming into the panels;  some also specify a minimum or optimium voltage.   +MPPT manufacturers always specify a maximum voltage coming into the controller;  some also specify a minimum or optimium voltage.   
  
   * Victron:  Vpanel >= Vbatt + 5v to start MPPT, Vbatt + 1v thereafter.((https://www.victronenergy.com/upload/documents/Manual-BlueSolar-charge-controller-MPPT-75-10-75-15--100-15-EN-NL-FR-DE-ES-SE-ul.pdf))   * Victron:  Vpanel >= Vbatt + 5v to start MPPT, Vbatt + 1v thereafter.((https://www.victronenergy.com/upload/documents/Manual-BlueSolar-charge-controller-MPPT-75-10-75-15--100-15-EN-NL-FR-DE-ES-SE-ul.pdf))
   * Genasun (nominal 12 systems):  15-18v for constant power supplies((https://genasun.com/support/faq/)), <= 27v for PV.((https://www.bruceschwab.com/wp-content/uploads/sites/86/2018/01/GV-10_Manual-2017.pdf))   * Genasun (nominal 12 systems):  15-18v for constant power supplies((https://genasun.com/support/faq/)), <= 27v for PV.((https://www.bruceschwab.com/wp-content/uploads/sites/86/2018/01/GV-10_Manual-2017.pdf))
   * SNA (grid tied): Vpanel = desired output * 1.4142((https://www.researchgate.net/profile/Aalok_Bhatt/post/How_to_select_MPPT_Range_of_Solar_Inverter/attachment/59d624496cda7b8083a1f834/AS%3A377507284045824%401467016158673/download/SMA+Datasheet.pdf))   * SNA (grid tied): Vpanel = desired output * 1.4142((https://www.researchgate.net/profile/Aalok_Bhatt/post/How_to_select_MPPT_Range_of_Solar_Inverter/attachment/59d624496cda7b8083a1f834/AS%3A377507284045824%401467016158673/download/SMA+Datasheet.pdf))
-  * generic rule of thumb:  Vpanel >= maxiumum Vbatt + 30%  FIXME +  * generic rule of thumb:  Vpanel >= maxiumum Vbatt + 30%  
-  * generic rule of thumb:  Vpanel <= maximum Vbat * 2.((https://www.homepower.com/input-voltage-controller-efficiency))((https://forum.solar-electric.com/discussion/351037/recomended-mppt-input-voltage-for-a-48-volt-system)). +  * generic rule of thumb:  Vpanel <= maximum Vbatt * 2.((https://www.homepower.com/input-voltage-controller-efficiency))((https://forum.solar-electric.com/discussion/351037/recomended-mppt-input-voltage-for-a-48-volt-system)). 
  
electrical/solar/mppt_design.txt · Last modified: 2023/01/22 15:35 by frater_secessus

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