How to increase AC voltage of solar cell/panel

Discussion in 'The Projects Forum' started by Darius Jermala, Dec 14, 2015.

  1. Darius Jermala

    Thread Starter New Member

    Dec 14, 2015
    3
    0
    Hello eveyone,

    I‘m making imittation of solar panel voltage imput (solar radiation) + DC/DC converter + DC/AC converter (With LTSpice software):

    [​IMG]

    In the scheme below it is generated AC voltage of 1 solar cell (between Vabc and Vxyz dots):

    [​IMG]
    [img=http://s3.postimg.org/7czrcw93j/2_V.jpg]

    The idea is to gain 220-230 RMS Voltage to power up for example water pump. So the Vpp has to be 170V. So the AC signal should look like this:

    [​IMG]

    Does anyone could help me to increase Vpp voltage from 2V to 170V? Maybe you have any idea how to multiplie cells connected sequentialy with 1 DC/AC converter? (Because I don‘t think so that every cell has it‘s own converter, or does it?) Or it will be enough to upgrade DC/DC converter to increase Vpp?

    Thank You in advance!
     
    Last edited: Dec 14, 2015
  2. MikeML

    AAC Fanatic!

    Oct 2, 2009
    5,450
    1,066
    Why not do what everybody else does; stack up a series-connected set of cells to get >24V, and then use a step-up smps.
     
    Last edited: Dec 14, 2015
  3. Picbuster

    Member

    Dec 2, 2013
    374
    50
    hmm, you stated 3.3V@ 10mA = 0,03 Watt using a step-up loss 10% waterpump 0,027watt pump power available.
    fact;to bring 75liter water 1 meter high in one second you need 736Watt 1pk approx.
    now you can calculate the time needed to bring 1 liter of water 1 meter up.
     
  4. Darius Jermala

    Thread Starter New Member

    Dec 14, 2015
    3
    0
    And what about if after pumping 1 liter to 1 meter height I would like to disconnect solar panel from water pump and I would like to sell electrical energy via grid ? I would still need 170V AC ? Is it possible to modify this circuit somehow to gain 170V? Because requirement is to use DC/DC and DC/AC converters in circuit :/
     
  5. AnalogKid

    Distinguished Member

    Aug 1, 2013
    4,532
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    240 Vrms = 170 Vpeak, not Vp-p. 240 Vrms = 340 Vpp.

    What requirement?

    Stepping 2 Vdc up to 220 Vrms is going to be *very* inefficient.

    ak
     
  6. Darius Jermala

    Thread Starter New Member

    Dec 14, 2015
    3
    0
    The requirement of this circuit making task is to use DC/DC converter and DC/AC inverter :)
     
  7. Colin55

    Member

    Aug 27, 2015
    191
    19
    One imitation solar cell is too many. It will burn out the imitation pump.
     
  8. AnalogKid

    Distinguished Member

    Aug 1, 2013
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    Again, what requirement? is this a homework/school problem?
     
  9. Picbuster

    Member

    Dec 2, 2013
    374
    50
    no problem to make 170V but the power will be no more than 0,027watt
    gives you @170V 0,00015A no pump will run not even a led will go on.

    Conclusion; project is useless.
     
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