Saw some over the last few days with a Generator body that was bery short -
but large diameter.
They seemed big machines - rather than domestic ones. Any ideas why the
different design?

On Thursday, 14 September 2017 18:54:10 UTC+1, DerbyBorn wrote:
Saw some over the last few days with a Generator body that was bery short -
but large diameter.
They seemed big machines - rather than domestic ones. Any ideas why the
different design?

It's probably one with no gearbox.
Hence the generator is large diameter because it has many poles (rare earth magnets.)
The benefit is that it's cheaper to make and no whining gearbox noise to annoy people.

On Thursday, 14 September 2017 18:54:10 UTC+1, DerbyBorn wrote:
Saw some over the last few days with a Generator body that was bery short -
but large diameter.
They seemed big machines - rather than domestic ones. Any ideas why the
different design?

http://www.windpowerengineering.com/...ds-no-gearbox/

That documentary the other day about service engineers that have to go
round the offshore ones doing oil changes, repairs and some kind of
hydraulic system fixing scared the wotsits out of me. Rather them than me I
think.
Brian

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"harry" wrote in message
...
On Thursday, 14 September 2017 18:54:10 UTC+1, DerbyBorn wrote:
Saw some over the last few days with a Generator body that was bery
short -
but large diameter.
They seemed big machines - rather than domestic ones. Any ideas why the
different design?

It's probably one with no gearbox.
Hence the generator is large diameter because it has many poles (rare
earth magnets.)
The benefit is that it's cheaper to make and no whining gearbox noise to
annoy people.

harry wrote in
:

http://www.windpowerengineering.com/...rboxes/direct-
drive-turbine-needs-no-gearbox/

Great - That is the very type.

On 14/09/17 18:54, DerbyBorn wrote:
Saw some over the last few days with a Generator body that was bery short -
but large diameter.
They seemed big machines - rather than domestic ones. Any ideas why the
different design?

maybe trying to eliminate the gerabox by using multipole motors instead.


--
In todays liberel progressive conflict-free education system, everyone
gets full Marx.

On Thu, 14 Sep 2017 23:33:57 -0700 (PDT), harry wrote:

On Thursday, 14 September 2017 18:54:10 UTC+1, DerbyBorn wrote:
Saw some over the last few days with a Generator body that was bery short -
but large diameter.
They seemed big machines - rather than domestic ones. Any ideas why the
different design?

It's probably one with no gearbox.
Hence the generator is large diameter because it has many poles (rare earth magnets.)
The benefit is that it's cheaper to make and no whining gearbox noise to annoy people.

ISTR that there's one at Glyndbourne opera house.
--
Peter.
The gods will stay away
whilst religions hold sway