Hybrid Renewable Energy - Energy Source Prioritization

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Adie_04

Joined May 21, 2025
3
I have a problem. I have a hybrid system consist of Solar System and a Micro hydro generator. I want to integrate my system with energy source prioritization, where I want to maximize the utilization of my sources. However, switching sources only happens when a source doesn't have energy to harvest. What I want to do is both of sources is used to supply energy, now by using MOSFET it will become a gate to allow current to get in to match the required output of the demand. But I don't really know how can I add up both my sources using MOSFETS or other current controlling electronics to satisfy the requirement output and still have stable voltage and frequency.

Do you guys have any Idea how can I implement this system
 

Ian0

Joined Aug 7, 2020
13,097
I have a problem. I have a hybrid system consist of Solar System and a Micro hydro generator. I want to integrate my system with energy source prioritization, where I want to maximize the utilization of my sources. However, switching sources only happens when a source doesn't have energy to harvest. What I want to do is both of sources is used to supply energy, now by using MOSFET it will become a gate to allow current to get in to match the required output of the demand. But I don't really know how can I add up both my sources using MOSFETS or other current controlling electronics to satisfy the requirement output and still have stable voltage and frequency.

Do you guys have any Idea how can I implement this system
Do you have any battery storage? Is the micro-hydro a limited resource? i.e. limited in the amount of water stored.How much power do you have available, and how much do you need?
 

nsaspook

Joined Aug 27, 2009
16,249
Do you have any battery storage? Is the micro-hydro a limited resource? i.e. limited in the amount of water stored.How much power do you have available, and how much do you need?
He will need battery storage to have it more useful than just parallel energy sources. A hybrid system with at least 6 hours of typical load energy storage is a lot more useful for living with off-grid energy as the primary energy source.

To the OP, need to know all the details to make intelligent guesses, like system source voltages, AC/DC with normal energy levels in KWh (not Ah)from each source, load details voltages, AC/DC for each load in KWh.
 

MisterBill2

Joined Jan 23, 2018
27,159
Power from most solar sources does not consume one's resources. So if the demand is not greater than what the solar can provide alone, what possible benefit would be derived from splitting up the supplies??

I am thinking that a Micro hydro generator is the only source that consumes your resources, since in most of the world sunlight is free, and not sold.
Like the others, I suggest having battery storage for the not utilized solar energy, with the "Micro hydro generator" as a backup for when batterypower runs out.
 

nsaspook

Joined Aug 27, 2009
16,249
The other way is to use one of those cheap grid-tie inverters with a limiter CT for the solar. The limiter keeps you from sending power into the grid while optimizing the energy capture by using normal AC loads and the house AC power distribution system.
The have a MPTT mode for direct connection to panels without battery storage or a battery mode that outputs a specified power from remote programmable registers via MODBUS.

24VDC is the lowest DC system voltage I would use for a home sized energy system.
 
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