Some of the supercharged dynamos keep whirling round (4)

I believe the answer is:

eddy

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'whirling round' is the definition.
'eddy' can be an answer for 'round' (thesaurus). I am not certain of the 'whirling' bit.

'some of the supercharged dynamos keep' is the wordplay.
'some of' indicates the answer is hidden within the clue.
'EDDY' is hidden in the letters of 'supercharged dynamos keep'.

Can you help me to learn more?

(Other definitions for eddy that I've seen before include "Chap" , "Spin" , "Swirl; Duane -, US guitarist" , "Whirl (in fluid)" , "Vortex" .)

I've seen this clue in The Irish Independent.

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