new girl

[skysky]

i am installing a small system to start, i had wind and solar 20 years ago it is very different now, I have a question about mppt /pwm, if someone can guide me to the correct forum area many thanks sky
living in cold wet but windy england

[Mike90250]

PWM is the old switch on, switch off, charge control. MPPT - continuously adjusts with it's integral DC-DC convertor, the best load on the power source, for the best power to the batteries, in the 95% efficient range, much better than PWM's 70-80%

[drtimm]

you had solar 20 years ago? I imagine the solar panels cost a fortune back then!

[tufail_74]

If you compare the benefits from PWM and MPPT, you will feel that MPPT is a bit costly but it opens door for you.
It is highly flexible regarding the input and output voltages.

I would prefer you to get MPPT.

[skysky]

you had solar 20 years ago? I imagine the solar panels cost a fortune back then!

I still have the text book "solar electricity" just the book cost £35! LED's are the best now, we had 20watt + lights, or car head lights! back in the 90's in Wales!

[skysky]

I have both

If you compare the benefits from PWM and MPPT, you will feel that MPPT is a bit costly but it opens door for you.
It is highly flexible regarding the input and output voltages.

I would prefer you to get MPPT.

Thank you for replying,I have been given an answer that the two cannot be combined so i am keeping them on two different systems (for now)and plan to upgrade the MPPT to a morningstar 60 when

[inetdog]

Thank you for replying,I have been given an answer that the two cannot be combined so i am keeping them on two different systems (for now)and plan to upgrade the MPPT to a morningstar 60 when

The two can be combined in terms of charging the same battery bank, but you cannot connect the same array of solar panels to the inputs of a PWM and an MPPT CC at the same time.
You also generally cannot connect two MPPT CCs to the same set of panels whether they are charging the same battery bank or not.