How to reduce the Back EMF in an electricity generator?

Thread Starter

humptydumptyaac

Joined Nov 3, 2021
24
Hi, I'm new to most things physics.

I'm studying electricy generation and I'm wondering if there's a way to reduce the back EMF by at least 50%, ideally up to 90%.

I found this video on youtube (starts around 6:25):

It presents a certain design which supposedly reduces the back EMF.

But being a newbie and all - it's not clear to me exactly how it works, and I haven't heard him say by how much it reduces it.

What are your throughts on the design in the video? Should it work?

What other thoughts do you have, perhaps using a different mechanism, on how to reduce the back EMF?

Thank you.
 

BobTPH

Joined Jun 5, 2013
4,906
Back EMF is priduced in a motor when driven by electric power. In a generator, the EMF is the power it is generating. The analog of back EMF in a generator is the mechanical resistance to spinning it, and it cannot be reduced, it must equal the power generated. This is basic physics.

Bob
 

Thread Starter

humptydumptyaac

Joined Nov 3, 2021
24
Back EMF is priduced in a motor when driven by electric power. In a generator, the EMF is the power it is generating. The analog of back EMF in a generator is the mechanical resistance to spinning it, and it cannot be reduced, it must equal the power generated. This is basic physics.

Bob
Thank you, Bob
 
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