Posted by harry on July 13, 2009, 3:28 pm
> harry wrote:
> >> harry wrote:
> >>>> Here is why it's bad to use a PMA (permanent magnet) motor for your Wind
> >>>> Power:
> >>>> 1) It would require so much strong wind to turn the motor, most of them
> >>>> output 300watt - 1000watt at voltage not useful to charge your standard
> >>>> battery. PMA motors are weak, so many times weaker than NON-PMA motors.
> >>>> I already tested theirs. So be sure you test their motor with load if
> >>>> you got one, because they use capacitor to mislead the true output. theirs
> >>>> is a hyper output!.
> >>>> 2) PMA motor doesn't have any flexibility to adapt to wind power, it's
> >>>> fixed. Therefore you are a loser if you bought one, its torque cannot be
> >>>> adjusted to adapt to wind's power.
> >>>> 3) The PMA makers are usually jalous poeple, they're afraid you will
invade
> >>>> their market, they would try to eliminate your idea if you have something
> >>>> better.
> >>>> 4) THE PMA-MOTOR USERS/MAKERS called Adjustable Torque motors as junk,
> >>>> BECAUSE THEY HAVEN'T TRIED IT, and they don't know anything about it.
> >>>>
-------------------------------------------------------------------------------------------
> >>>> Why it makes sense to use an Alternator with Automagnet/Autofield
> >>>> controller?
> >>>> 1) It can adjust itself to any wind speed, any wind power.
> >>>> 2) Generator outputs 4-10 times more power, real power, not hyper power
> >>>> like PMA motors.
> >>> There is no difference between a "motor" and a "generator" they are
> >>> exactly the same thing, just as there is no such thing as a DCmotor/
> >>> generator, they are all AC. There is no radical difference between an
> >>> "alternator" and a permanent "motor/generator".
> >> Boy, where did you get that nonsense. DC motor is the name given to a
> >> particular type of machine that uses DC power to work. It doesn't work
> >> worth a hoot on AC. Similarly take an AC induction motor and hook it up
> >> to a DC supply and tell me how many times in spins.
> >> Likewise its awfully difficult to get AC out of a DC generator. Whereas
> >> most modern car alternators are just AC generators with a rectifier
> >> built in to convert it to DC.
> >>> Just one has a
> >>> permanent magnet and the other has an "electro-magnet" Some clever
> >>> man has devised truely permanent permanent magnets that's all. A
> >>> permanent magnet device is less flexible than a electro-magnet device
> >>> because the strength of the magnetic field cannot be varied. A
> >>> disadvantage.
> >>> All "motors" can be made to generate. All "generators" can be run as
> >>> motors.
> >> *SOME* motors are much easier to use as generator than others. Running
> >> / regulating an induction generator without an AC supply is quite
> >> difficult. But using a synchronous motor as an AC generator is a snap.
> >> Likewise it's just about impossible to get AC from a DC generator.
> >> Despite your silly statement that 'they are all AC'.
> >>> Technology has changed over the years, mainly because of cunning
> >>> electronic devices. The principles have not.
> >> DC generators can still put out smoother power than rectified AC unless
> >> you want to go to 9-phase AC generator or higher. The 'principles' are
> >> more than just claiming 'they are all AC'.
> >> daestrom
> > You are a very ignorant boy. ALL rotating machines work on AC. It's
> > usually in the bit that spins though not neccesarily so.
> > DC "motors" are fitted with a clever MECHANICAL INVERTER called a
> > "commutator and brushes" that makes DC into AC.
> > This same device can also function as a RECTIFIER so that the same
> > machine can run as a "generator" outputting DC.
> > But in every rotating electrical machine there is AC.
> Ha! Some arm-chair 'theorist' is telling me about DC machinery! What a
> laugh. How many 150 hp, 270V DC motors have you rebuilt? Standard gear
> on submarines boy.
> As far as your 'all motors work on AC', you don't apply AC to the motor
> terminals you apply DC. Period.
> But since you want to try and split hairs, consider this. THe current
> in the wire under the N pole of the stator is *always* flowing in the
> same direction. The current in the wire under the 'S' pole is always
> flowing in the opposite direction. Sounds like 'direct current' to me.
> The wire is replaced with another one as the machine rotates, but the
> current is always flowing in the same direction under a given magnetic
> pole. If it weren't, the thing wouldn't spin.
> > The "Alternator" used in a car outputs DC doesn't it? In this case it
> > is rectified by means of diodes. They are not as smart bcause they
> > won't work as an inverter. Though this of course is irrelevant in the
> > use it is put to.
> You're probably one of those few that insist the term 'generator' only
> applies to machines that output DC and 'alternator' applies to all AC
> machines. What a joke. Get out and work on some multi-megawatt
> machines and let us know what the manufacturer calls them. (hint, the
> machine in power plants is called a 'turbine-generator', not
> 'turbine-alternator')
> > Why do we use alternators in cars instead of the old "dynamos"?
> > Because the alternator has no commutator it can be driven faster and
> > will generate at lower speeds. If you drove a dynamo at those speeds
> > the commutator would explode due to centrifugal force.
> > You can check this out, the pulley on an alternator is half the size
> > of a pulley on a dynamo.
> > Also diodes are cheaper to make than commutators & require no
> > maintenance.
> Irrelevant to your other nonsense.
> daestrom
[Quote]
But since you want to try and split hairs, consider this. THe current
in the wire under the N pole of the stator is *always* flowing in the
same direction. The current in the wire under the 'S' pole is always
flowing in the opposite direction. Sounds like 'direct current' to
me.
[Unquote]
There you have it . If you consider the one winding, It passes under a
N pole & then it next passes under a 'S' pole & the current reverses,
therefore it is AC.
If it was connected to sliprings you would get AC out. As it's
connected to a commutator you get DC out. This is not hair
splitting, it's very basic knowledge which you clearly don't
posses..
Though you mayhave been a grease money on DC motors, you clearly
haven't a clue about the theory and maths behind them.
I ran the generators from the WW1 UK battleship "Tiger" transferred
for use in a hospital. (Reciprocating steam engines DC machines.
600Kw. We also maintained them, (what little they needed)
The advantage of being able to run an automobile alternator faster is
that when the ICE is idling (eg in traffic) it will still generate &
charge the battery.
Whereas the old "dynamos" would only get up to 12V plus at around 1500
RPM engine speed.
But I expect you're too dopey to be able to see this.
Posted by clare on July 13, 2009, 3:38 pm
wrote:
>harry wrote:
>>> harry wrote:
>>>>> Here is why it's bad to use a PMA (permanent magnet) motor for your Wind
>>>>> Power:
>>>>> 1) It would require so much strong wind to turn the motor, most of them
>>>>> output 300watt - 1000watt at voltage not useful to charge your standard
>>>>> battery. PMA motors are weak, so many times weaker than NON-PMA motors.
>>>>> I already tested theirs. So be sure you test their motor with load if
>>>>> you got one, because they use capacitor to mislead the true output. theirs
>>>>> is a hyper output!.
>>>>> 2) PMA motor doesn't have any flexibility to adapt to wind power, it's
>>>>> fixed. Therefore you are a loser if you bought one, its torque cannot be
>>>>> adjusted to adapt to wind's power.
>>>>> 3) The PMA makers are usually jalous poeple, they're afraid you will invade
>>>>> their market, they would try to eliminate your idea if you have something
>>>>> better.
>>>>> 4) THE PMA-MOTOR USERS/MAKERS called Adjustable Torque motors as junk,
>>>>> BECAUSE THEY HAVEN'T TRIED IT, and they don't know anything about it.
>>>>>
-------------------------------------------------------------------------------------------
>>>>> Why it makes sense to use an Alternator with Automagnet/Autofield
>>>>> controller?
>>>>> 1) It can adjust itself to any wind speed, any wind power.
>>>>> 2) Generator outputs 4-10 times more power, real power, not hyper power
>>>>> like PMA motors.
>>>> There is no difference between a "motor" and a "generator" they are
>>>> exactly the same thing, just as there is no such thing as a DCmotor/
>>>> generator, they are all AC. There is no radical difference between an
>>>> "alternator" and a permanent "motor/generator".
>>> Boy, where did you get that nonsense. DC motor is the name given to a
>>> particular type of machine that uses DC power to work. It doesn't work
>>> worth a hoot on AC. Similarly take an AC induction motor and hook it up
>>> to a DC supply and tell me how many times in spins.
>>>
>>> Likewise its awfully difficult to get AC out of a DC generator. Whereas
>>> most modern car alternators are just AC generators with a rectifier
>>> built in to convert it to DC.
>>>
>>>> Just one has a
>>>> permanent magnet and the other has an "electro-magnet" Some clever
>>>> man has devised truely permanent permanent magnets that's all. A
>>>> permanent magnet device is less flexible than a electro-magnet device
>>>> because the strength of the magnetic field cannot be varied. A
>>>> disadvantage.
>>>> All "motors" can be made to generate. All "generators" can be run as
>>>> motors.
>>> *SOME* motors are much easier to use as generator than others. Running
>>> / regulating an induction generator without an AC supply is quite
>>> difficult. But using a synchronous motor as an AC generator is a snap.
>>> Likewise it's just about impossible to get AC from a DC generator.
>>> Despite your silly statement that 'they are all AC'.
>>>
>>>> Technology has changed over the years, mainly because of cunning
>>>> electronic devices. The principles have not.
>>> DC generators can still put out smoother power than rectified AC unless
>>> you want to go to 9-phase AC generator or higher. The 'principles' are
>>> more than just claiming 'they are all AC'.
>>>
>>> daestrom
>>
>> You are a very ignorant boy. ALL rotating machines work on AC. It's
>> usually in the bit that spins though not neccesarily so.
>> DC "motors" are fitted with a clever MECHANICAL INVERTER called a
>> "commutator and brushes" that makes DC into AC.
>> This same device can also function as a RECTIFIER so that the same
>> machine can run as a "generator" outputting DC.
>> But in every rotating electrical machine there is AC.
>Ha! Some arm-chair 'theorist' is telling me about DC machinery! What a
>laugh. How many 150 hp, 270V DC motors have you rebuilt? Standard gear
>on submarines boy.
Regardless how many you have rebuilt, he is right - arm-chair theorist
or not.
>As far as your 'all motors work on AC', you don't apply AC to the motor
>terminals you apply DC. Period.
>But since you want to try and split hairs, consider this. THe current
>in the wire under the N pole of the stator is *always* flowing in the
>same direction. The current in the wire under the 'S' pole is always
>flowing in the opposite direction. Sounds like 'direct current' to me.
>The wire is replaced with another one as the machine rotates, but the
>current is always flowing in the same direction under a given magnetic
>pole. If it weren't, the thing wouldn't spin.
You don't know jack about motor theory if you cannot see the fact that
the rotor functions on AC..
>>
>> The "Alternator" used in a car outputs DC doesn't it? In this case it
>> is rectified by means of diodes. They are not as smart bcause they
>> won't work as an inverter. Though this of course is irrelevant in the
>> use it is put to.
>You're probably one of those few that insist the term 'generator' only
>applies to machines that output DC and 'alternator' applies to all AC
>machines. What a joke. Get out and work on some multi-megawatt
>machines and let us know what the manufacturer calls them. (hint, the
>machine in power plants is called a 'turbine-generator', not
>'turbine-alternator')
>>
>> Why do we use alternators in cars instead of the old "dynamos"?
>> Because the alternator has no commutator it can be driven faster and
>> will generate at lower speeds. If you drove a dynamo at those speeds
>> the commutator would explode due to centrifugal force.
>> You can check this out, the pulley on an alternator is half the size
>> of a pulley on a dynamo.
>> Also diodes are cheaper to make than commutators & require no
>> maintenance.
>>
>Irrelevant to your other nonsense.
>daestrom
Posted by daestrom on July 13, 2009, 8:45 pm
clare@snyder.on.ca wrote:
> wrote:
>
>> harry wrote:
>>>> harry wrote:
>>>>>> Here is why it's bad to use a PMA (permanent magnet) motor for your Wind
>>>>>> Power:
>>>>>> 1) It would require so much strong wind to turn the motor, most of them
>>>>>> output 300watt - 1000watt at voltage not useful to charge your standard
>>>>>> battery. PMA motors are weak, so many times weaker than NON-PMA motors.
>>>>>> I already tested theirs. So be sure you test their motor with load if
>>>>>> you got one, because they use capacitor to mislead the true output. theirs
>>>>>> is a hyper output!.
>>>>>> 2) PMA motor doesn't have any flexibility to adapt to wind power, it's
>>>>>> fixed. Therefore you are a loser if you bought one, its torque cannot be
>>>>>> adjusted to adapt to wind's power.
>>>>>> 3) The PMA makers are usually jalous poeple, they're afraid you will
invade
>>>>>> their market, they would try to eliminate your idea if you have something
>>>>>> better.
>>>>>> 4) THE PMA-MOTOR USERS/MAKERS called Adjustable Torque motors as junk,
>>>>>> BECAUSE THEY HAVEN'T TRIED IT, and they don't know anything about it.
>>>>>>
-------------------------------------------------------------------------------------------
>>>>>> Why it makes sense to use an Alternator with Automagnet/Autofield
>>>>>> controller?
>>>>>> 1) It can adjust itself to any wind speed, any wind power.
>>>>>> 2) Generator outputs 4-10 times more power, real power, not hyper power
>>>>>> like PMA motors.
>>>>> There is no difference between a "motor" and a "generator" they are
>>>>> exactly the same thing, just as there is no such thing as a DCmotor/
>>>>> generator, they are all AC. There is no radical difference between an
>>>>> "alternator" and a permanent "motor/generator".
>>>> Boy, where did you get that nonsense. DC motor is the name given to a
>>>> particular type of machine that uses DC power to work. It doesn't work
>>>> worth a hoot on AC. Similarly take an AC induction motor and hook it up
>>>> to a DC supply and tell me how many times in spins.
>>>>
>>>> Likewise its awfully difficult to get AC out of a DC generator. Whereas
>>>> most modern car alternators are just AC generators with a rectifier
>>>> built in to convert it to DC.
>>>>
>>>>> Just one has a
>>>>> permanent magnet and the other has an "electro-magnet" Some clever
>>>>> man has devised truely permanent permanent magnets that's all. A
>>>>> permanent magnet device is less flexible than a electro-magnet device
>>>>> because the strength of the magnetic field cannot be varied. A
>>>>> disadvantage.
>>>>> All "motors" can be made to generate. All "generators" can be run as
>>>>> motors.
>>>> *SOME* motors are much easier to use as generator than others. Running
>>>> / regulating an induction generator without an AC supply is quite
>>>> difficult. But using a synchronous motor as an AC generator is a snap.
>>>> Likewise it's just about impossible to get AC from a DC generator.
>>>> Despite your silly statement that 'they are all AC'.
>>>>
>>>>> Technology has changed over the years, mainly because of cunning
>>>>> electronic devices. The principles have not.
>>>> DC generators can still put out smoother power than rectified AC unless
>>>> you want to go to 9-phase AC generator or higher. The 'principles' are
>>>> more than just claiming 'they are all AC'.
>>>>
>>>> daestrom
>>> You are a very ignorant boy. ALL rotating machines work on AC. It's
>>> usually in the bit that spins though not neccesarily so.
>>> DC "motors" are fitted with a clever MECHANICAL INVERTER called a
>>> "commutator and brushes" that makes DC into AC.
>>> This same device can also function as a RECTIFIER so that the same
>>> machine can run as a "generator" outputting DC.
>>> But in every rotating electrical machine there is AC.
>> Ha! Some arm-chair 'theorist' is telling me about DC machinery! What a
>> laugh. How many 150 hp, 270V DC motors have you rebuilt? Standard gear
>> on submarines boy.
>
> Regardless how many you have rebuilt, he is right - arm-chair theorist
> or not.
>> As far as your 'all motors work on AC', you don't apply AC to the motor
>> terminals you apply DC. Period.
>>
>> But since you want to try and split hairs, consider this. THe current
>> in the wire under the N pole of the stator is *always* flowing in the
>> same direction. The current in the wire under the 'S' pole is always
>> flowing in the opposite direction. Sounds like 'direct current' to me.
>>
>> The wire is replaced with another one as the machine rotates, but the
>> current is always flowing in the same direction under a given magnetic
>> pole. If it weren't, the thing wouldn't spin.
>
> You don't know jack about motor theory if you cannot see the fact that
> the rotor functions on AC..
How many DC motors work when you apply AC to the terminals?
How many DC motors have the current alternating first in one direction
under the N pole and then in the opposite direction under the N pole?
Zip, zero, nada.
End of story.
daestrom
Posted by harry on July 14, 2009, 1:53 pm
> cl...@snyder.on.ca wrote:
> > wrote:
> >> harry wrote:
> >>>> harry wrote:
> >>>>>> Here is why it's bad to use a PMA (permanent magnet) motor for your
Wind
> >>>>>> Power:
> >>>>>> 1) It would require so much strong wind to turn the motor, most of them
> >>>>>> output 300watt - 1000watt at voltage not useful to charge your standard
> >>>>>> battery. PMA motors are weak, so many times weaker than NON-PMA
motors.
> >>>>>> I already tested theirs. So be sure you test their motor with load if
> >>>>>> you got one, because they use capacitor to mislead the true output.
theirs
> >>>>>> is a hyper output!.
> >>>>>> 2) PMA motor doesn't have any flexibility to adapt to wind power, it's
> >>>>>> fixed. Therefore you are a loser if you bought one, its torque cannot be
> >>>>>> adjusted to adapt to wind's power.
> >>>>>> 3) The PMA makers are usually jalous poeple, they're afraid you will
invade
> >>>>>> their market, they would try to eliminate your idea if you have
something
> >>>>>> better.
> >>>>>> 4) THE PMA-MOTOR USERS/MAKERS called Adjustable Torque motors as junk,
> >>>>>> BECAUSE THEY HAVEN'T TRIED IT, and they don't know anything about it.
> >>>>>>
-------------------------------------------------------------------------------------------
> >>>>>> Why it makes sense to use an Alternator with Automagnet/Autofield
> >>>>>> controller?
> >>>>>> 1) It can adjust itself to any wind speed, any wind power.
> >>>>>> 2) Generator outputs 4-10 times more power, real power, not hyper power
> >>>>>> like PMA motors.
> >>>>> There is no difference between a "motor" and a "generator" they are
> >>>>> exactly the same thing, just as there is no such thing as a DCmotor/
> >>>>> generator, they are all AC. There is no radical difference between an
> >>>>> "alternator" and a permanent "motor/generator".
> >>>> Boy, where did you get that nonsense. DC motor is the name given to a
> >>>> particular type of machine that uses DC power to work. It doesn't work
> >>>> worth a hoot on AC. Similarly take an AC induction motor and hook it up
> >>>> to a DC supply and tell me how many times in spins.
> >>>> Likewise its awfully difficult to get AC out of a DC generator. Whereas
> >>>> most modern car alternators are just AC generators with a rectifier
> >>>> built in to convert it to DC.
> >>>>> Just one has a
> >>>>> permanent magnet and the other has an "electro-magnet" Some clever
> >>>>> man has devised truely permanent permanent magnets that's all. A
> >>>>> permanent magnet device is less flexible than a electro-magnet device
> >>>>> because the strength of the magnetic field cannot be varied. A
> >>>>> disadvantage.
> >>>>> All "motors" can be made to generate. All "generators" can be run as
> >>>>> motors.
> >>>> *SOME* motors are much easier to use as generator than others. Running
> >>>> / regulating an induction generator without an AC supply is quite
> >>>> difficult. But using a synchronous motor as an AC generator is a snap.
> >>>> Likewise it's just about impossible to get AC from a DC generator.
> >>>> Despite your silly statement that 'they are all AC'.
> >>>>> Technology has changed over the years, mainly because of cunning
> >>>>> electronic devices. The principles have not.
> >>>> DC generators can still put out smoother power than rectified AC unless
> >>>> you want to go to 9-phase AC generator or higher. The 'principles' are
> >>>> more than just claiming 'they are all AC'.
> >>>> daestrom
> >>> You are a very ignorant boy. ALL rotating machines work on AC. It's
> >>> usually in the bit that spins though not neccesarily so.
> >>> DC "motors" are fitted with a clever MECHANICAL INVERTER called a
> >>> "commutator and brushes" that makes DC into AC.
> >>> This same device can also function as a RECTIFIER so that the same
> >>> machine can run as a "generator" outputting DC.
> >>> But in every rotating electrical machine there is AC.
> >> Ha! Some arm-chair 'theorist' is telling me about DC machinery! What a
> >> laugh. How many 150 hp, 270V DC motors have you rebuilt? Standard gear
> >> on submarines boy.
> > Regardless how many you have rebuilt, he is right - arm-chair theorist
> > or not.
> >> As far as your 'all motors work on AC', you don't apply AC to the motor
> >> terminals you apply DC. Period.
> >> But since you want to try and split hairs, consider this. THe current
> >> in the wire under the N pole of the stator is *always* flowing in the
> >> same direction. The current in the wire under the 'S' pole is always
> >> flowing in the opposite direction. Sounds like 'direct current' to me.
> >> The wire is replaced with another one as the machine rotates, but the
> >> current is always flowing in the same direction under a given magnetic
> >> pole. If it weren't, the thing wouldn't spin.
> > You don't know jack about motor theory if you cannot see the fact that
> > the rotor functions on AC..
> How many DC motors work when you apply AC to the terminals?
> How many DC motors have the current alternating first in one direction
> under the N pole and then in the opposite direction under the N pole?
> Zip, zero, nada.
> End of story.
> daestrom
A "DC motor" will in fact run on AC. Think electric drill, vacuum
cleaner etc.
So in fact all of them will run on AC. There's more sparking at the
brushes and increased iron losses than running it on DC. But works
just fine.
You are the most ignorant person on this forum.
Well except for this Richardson person.
Posted by harry on July 14, 2009, 2:01 pm
> cl...@snyder.on.ca wrote:
> > wrote:
> >> harry wrote:
> >>>> harry wrote:
> >>>>>> Here is why it's bad to use a PMA (permanent magnet) motor for your
Wind
> >>>>>> Power:
> >>>>>> 1) It would require so much strong wind to turn the motor, most of them
> >>>>>> output 300watt - 1000watt at voltage not useful to charge your standard
> >>>>>> battery. PMA motors are weak, so many times weaker than NON-PMA
motors.
> >>>>>> I already tested theirs. So be sure you test their motor with load if
> >>>>>> you got one, because they use capacitor to mislead the true output.
theirs
> >>>>>> is a hyper output!.
> >>>>>> 2) PMA motor doesn't have any flexibility to adapt to wind power, it's
> >>>>>> fixed. Therefore you are a loser if you bought one, its torque cannot be
> >>>>>> adjusted to adapt to wind's power.
> >>>>>> 3) The PMA makers are usually jalous poeple, they're afraid you will
invade
> >>>>>> their market, they would try to eliminate your idea if you have
something
> >>>>>> better.
> >>>>>> 4) THE PMA-MOTOR USERS/MAKERS called Adjustable Torque motors as junk,
> >>>>>> BECAUSE THEY HAVEN'T TRIED IT, and they don't know anything about it.
> >>>>>>
-------------------------------------------------------------------------------------------
> >>>>>> Why it makes sense to use an Alternator with Automagnet/Autofield
> >>>>>> controller?
> >>>>>> 1) It can adjust itself to any wind speed, any wind power.
> >>>>>> 2) Generator outputs 4-10 times more power, real power, not hyper power
> >>>>>> like PMA motors.
> >>>>> There is no difference between a "motor" and a "generator" they are
> >>>>> exactly the same thing, just as there is no such thing as a DCmotor/
> >>>>> generator, they are all AC. There is no radical difference between an
> >>>>> "alternator" and a permanent "motor/generator".
> >>>> Boy, where did you get that nonsense. DC motor is the name given to a
> >>>> particular type of machine that uses DC power to work. It doesn't work
> >>>> worth a hoot on AC. Similarly take an AC induction motor and hook it up
> >>>> to a DC supply and tell me how many times in spins.
> >>>> Likewise its awfully difficult to get AC out of a DC generator. Whereas
> >>>> most modern car alternators are just AC generators with a rectifier
> >>>> built in to convert it to DC.
> >>>>> Just one has a
> >>>>> permanent magnet and the other has an "electro-magnet" Some clever
> >>>>> man has devised truely permanent permanent magnets that's all. A
> >>>>> permanent magnet device is less flexible than a electro-magnet device
> >>>>> because the strength of the magnetic field cannot be varied. A
> >>>>> disadvantage.
> >>>>> All "motors" can be made to generate. All "generators" can be run as
> >>>>> motors.
> >>>> *SOME* motors are much easier to use as generator than others. Running
> >>>> / regulating an induction generator without an AC supply is quite
> >>>> difficult. But using a synchronous motor as an AC generator is a snap.
> >>>> Likewise it's just about impossible to get AC from a DC generator.
> >>>> Despite your silly statement that 'they are all AC'.
> >>>>> Technology has changed over the years, mainly because of cunning
> >>>>> electronic devices. The principles have not.
> >>>> DC generators can still put out smoother power than rectified AC unless
> >>>> you want to go to 9-phase AC generator or higher. The 'principles' are
> >>>> more than just claiming 'they are all AC'.
> >>>> daestrom
> >>> You are a very ignorant boy. ALL rotating machines work on AC. It's
> >>> usually in the bit that spins though not neccesarily so.
> >>> DC "motors" are fitted with a clever MECHANICAL INVERTER called a
> >>> "commutator and brushes" that makes DC into AC.
> >>> This same device can also function as a RECTIFIER so that the same
> >>> machine can run as a "generator" outputting DC.
> >>> But in every rotating electrical machine there is AC.
> >> Ha! Some arm-chair 'theorist' is telling me about DC machinery! What a
> >> laugh. How many 150 hp, 270V DC motors have you rebuilt? Standard gear
> >> on submarines boy.
> > Regardless how many you have rebuilt, he is right - arm-chair theorist
> > or not.
> >> As far as your 'all motors work on AC', you don't apply AC to the motor
> >> terminals you apply DC. Period.
> >> But since you want to try and split hairs, consider this. THe current
> >> in the wire under the N pole of the stator is *always* flowing in the
> >> same direction. The current in the wire under the 'S' pole is always
> >> flowing in the opposite direction. Sounds like 'direct current' to me.
> >> The wire is replaced with another one as the machine rotates, but the
> >> current is always flowing in the same direction under a given magnetic
> >> pole. If it weren't, the thing wouldn't spin.
> > You don't know jack about motor theory if you cannot see the fact that
> > the rotor functions on AC..
> How many DC motors work when you apply AC to the terminals?
> How many DC motors have the current alternating first in one direction
> under the N pole and then in the opposite direction under the N pole?
> Zip, zero, nada.
> End of story.
> daestrom
DC motors have the current running one way when the armature conductor
passes under the N pole & it reverses as it passes under the S pole.
All DC motors.
Do some research on Fleming's left and right hand rules.
Here you are in case you're too stpid to find it.
http://en.wikipedia.org/wiki/Fleming%27s_left_hand_rule_for_motors
Where were you educated BTW?
XML site map
> >> harry wrote:
> >>>> Here is why it's bad to use a PMA (permanent magnet) motor for your Wind
> >>>> Power:
> >>>> 1) It would require so much strong wind to turn the motor, most of them
> >>>> output 300watt - 1000watt at voltage not useful to charge your standard
> >>>> battery. PMA motors are weak, so many times weaker than NON-PMA motors.
> >>>> I already tested theirs. So be sure you test their motor with load if
> >>>> you got one, because they use capacitor to mislead the true output. theirs
> >>>> is a hyper output!.
> >>>> 2) PMA motor doesn't have any flexibility to adapt to wind power, it's
> >>>> fixed. Therefore you are a loser if you bought one, its torque cannot be
> >>>> adjusted to adapt to wind's power.
> >>>> 3) The PMA makers are usually jalous poeple, they're afraid you will