If these were DC machines and interconnected by high current DC lines
one could imagine a substantial magnetic field, but I believe that
these machines produce AC either directly or through an inverter.
--
73 Warren K2ORS
WD2XGJ
WD2XSH/23
WE2XEB/2
WE2XGR/1
On Thu, Sep 22, 2011 at 4:15 PM, Andy Talbot <[email protected]> wrote:
> Surely if the magnetic field leaked that much, the generators would suffer
> efficiency.
> They are designed as closed magnetic circuits, with all the field lines
> closely confined in iron, with small air gaps
>
> Andy
> 'jnt
>
>
> On 22 September 2011 21:07, Hugh M0WYE <[email protected]> wrote:
>>
>> Seems unlikely that the magnetism would reach that far to me - the
>> magnetic field would be no different to any other large generating set -
>> they are just an ordinary alternator driven through a gearbox.
>> If they did affect magnetic compasses you would have thought that the
>> place you would really notice it would be around the coast, with small boats
>> sailing in amongst them.
>> Although they look as if they are turning slowly, they can't do many rpm
>> before the tips of the blades go supersonic, as the blades are many 10s of
>> metres long.
>> Over what distance did you notice the magnetic effect? perhaps I could get
>> down to the ones on Romney Marsh, here in Kent and see if they have any
>> effect on a compass needle.
>>
>> The moving blades can affect radio reception for people living nearby,
>> although I've not noticed this myself.
>>
>> 73
>> Hugh M0WYE
>>
>> ----- Original Message -----
>> From: mal hamilton
>> To: rsgb
>> Sent: Thursday, September 22, 2011 5:09 PM
>> Subject: LF: Turbine magnets
>> Great for LF!!!!!!!!!!!!!
>>
>> Experience
>>
>> Driving to Gleneagles in Scotland last weekend my car magnetic compass was
>> reading backwards and erratic and I wondered why.
>> The hills es mountain tops are covered with WIND TURBINES, hugh beasts
>> and only turning slowly, cannot be producing much electric.
>> however thinking about it I have concluded that the strong MAGNETS in the
>> turbines must effect a magnetic compass, possible aeroplanes as well except
>> they are flying very high, might also have an influence on GPS frequencies
>> and navigation in these areas
>> I must say these hugh Monsters strewn all across the Scottish mountain
>> tops and countryside spoils the scenery.
>> de Mal/G3KEV
>>
>
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