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Is it possible to connect a 12VDC to 220VAC inverter to the output of an MPPT solar charge controller, with no battery? This will be cheaper than having a full solar inverter, which can be really expensive.

Update: I don't need batteries, because it's a pump that's used to water a garden, and is only need when there is enough sun for the solar panels.

Possible secondary question: Would I need a VFD to control the motor of the pump?

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  • Would you have batteries anywhere in the system? What type of loads are you trying to power?
    – LShaver ♦
    Commented Jul 9, 2016 at 1:18
  • If you don't get the answer you need here you could try posting to electronics.stackexchange.com
    – Highly Irregular
    Commented Jul 9, 2016 at 9:12
  • Hello LShaver! I don't need any batteries in my system, I'm trying to power a water pump at the end.
    – Zizo
    Commented Jul 9, 2016 at 9:46
  • @Zizo - OK, can you add this info to the question? Also, does the pump need to run continuously, or on demand, or x hours/day, or...?
    – LShaver ♦
    Commented Jul 9, 2016 at 11:44
  • I think the question on the VFD definitely belongs over at electronics.SE. Off the cuff, I'd say probably not, assuming it's a smallish pump.
    – LShaver ♦
    Commented Jul 9, 2016 at 16:01

2 Answers 2

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Generally speaking, the answer to your question is yes: there are many examples of irrigation systems employing a pump powered directly by solar power, with no battery energy storage. A quick search indicates there are numerous suppliers and types/scales of systems, and even a few youtube videos with DIY-guides to setting such a system up.

Specifically, it would depend on the components you have or intend to purchase: what are the specifications of your solar panels, charge controller, inverter, and pump, etc.

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Yes this is very much possible. While purchasing the Inverter , look for " BATTERY-LESS ", and you will have your desired product. Just a suggestion, a Taiwan based company has such model of Inverter with in-built MPPT controller. Google for INVEREX INFINI

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  • 1
    Are you associated with that company in any way - you're required to declare if so.
    – Móż
    Commented Jul 13, 2016 at 0:07
  • 2
    No. I have No connection, no association with that company. I have used this product. So I gave advice based on my personal experience.
    – Omar S Chaudhry
    Commented Jul 13, 2016 at 9:56

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