12V Electric Motor Speed Controller for Boat: Maximize Efficiency & Reverse Function, 60A Current

Question

Hello
I swim a boat with an electric motor powered by a 12V battery, the problem is quite high power consumption of this engine and frequent damage to the gear switch, so I would like to add a smooth speed control so-called maxymizer.

12V motor voltage and max current for which the driver would have to be is about 60A
for this smooth regulation plus change of engine revs left and right revs.

Does anyone have a proven scheme, a design for such a driver?

electronics_design · Answer

I propose to contact the seller - they make such devices under the order

zamela · Answer

I know that there are such sets to buy, but I would prefer to build it myself

Adam-T · Answer

Here you are:

electronics_design · Answer

Really great advice ... would put together the elements that are listed there and see only smoke. The BUZ11 transistor has 30 A continuous current, which is half of what the topic founder needs. In addition, with a current of 60 A, the power that will be released on it is 144 W, without experience in constructing converters it will be difficult for you to build a reliable driver. That's why I suggest you buy the link I sent, it will be 100% cheaper

zamela · Answer

700 PLN for a driver is a bit much because when I bought a new engine I could pay extra 3 hundred and have smooth regulation.

pawelr98 · Answer

Controlling PWM on 555 is not a bad idea.
You would need several mosfets in parallel because such current is not a leak.

There are also industrial IGBT bridges but the price is inadequate.

The Chinese can make this equipment quite cheaply.
https://www.banggood.com/DC-1050V-60A-3000W-D...oller-12V-24V-48V-p-1062573.html?rmmds=search

https://www.banggood.com/10-50V-100A-3000W-PW...-Speed-Controller-p-1117519.html?rmmds=search

The issue of cooling keying transistors.

The problem will be with reversing the direction of rotation. This second controller simply uses relays. I would have bought the first one, added a fan to cool the transistors and a relay system to reverse the rotation. Soldering wires from below to reduce path resistance.

Adam-T · Answer

The fact admits to an error. I copied the schema from the search engine without thinking. However, it is a fairly simple system and when used instead of BUZ11 STP80NF06 and instead of MBR1645 e.g. 30CPQ150PBF it should do its job. Of course, STP80NF06 should be equipped with a suitable heat sink, which will disperse about 30W.

12V Electric Motor Speed Controller for Boat: Maximize Efficiency & Reverse Function, 60A Current

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