Selecting Wind Turbine Motors

Ametek PM Motors

This very popular Wind Turbine motor is not always the best choice. Sometimes you will need to increase the RPM for wind turbine generator motor to get it to work. For higher output motors consider a motor from treadmills.

The following is data on the different Ametek motors. Ametek made several different versions of the 40 and 50 volt motor (maybe more).  There are other version of this motor that has not been researched.

The best PM motor for use as a generator is the one that has the highest rated voltage at the lowest rpm.  Meaning that if you have a PM motor that took 120 volts DC in and only turned the shaft at 300 rpm, you would know that it would put out some serious voltage as a generator.

Windings make a difference in the amount of amperage they can produce.  If you had a motor with windings the size of hair your output will be very low in amperage because the fine wire cannot carry the amperage.  

Ametek 20VDC KC8079F7	· Nominal voltage 20 VDC · 10/15 VDC · No load amps 0.47 · Shaft 5/8″ diameter. x 11/16″ long · 4″ diameter. x 7″ long · 550 RPM @ 20 VDC · Weight. 13 lbs.
Ametek 30VDC 080987K7Output Data below	·· Nominal voltage 30 VDC   · 12/24 VDC · No load amps 0.15 · Shaft 5/8″ diameter. x 1 7/8″ long · 4″ diameter. x 4 7/8″ long · 325 RPM @ 30 VDC · Weight. 7 3/4 lbs.
Ametek 37VDC Also known as Ametek 36VDC & 38VDC NO GOOD	· Nominal voltage 37 VDC   · 12/24 VDC · No load amps 0.35 · Shaft 5/8″ diameter. x 2.0″ long · 4″ diameter. x 4 7/8″ long · 2100 RPM @ 37 VDC · Weight. 8 lbs.	It seem that the most current version floating around of the Ametek 36 VDC motor has the same voltage to rpm ratio as the Ametek 30, but it does NOT have the output like the Ametek 30 has.  It will work, but only as a trickle charger. (around 1 to 1.5 amps expected).
Ametek 40VDC 030689F7	· Nominal voltage 40 VDC   · No load amps 0.50 · Shaft 5/8″ diameter. x 1 1/4″ long · 4″ diameter. x 4 7/8″ long · 1050 RPM @ 40 VDC · Weight. 11 lbs.
Ametek 40VDC 210988F7Below Average	· Nominal voltage 40 VDC   · No load amps 0.55 · Shaft 5/8″ diameter. x 2″ long · 4″ diameter. x 7″ long · 1600 RPM @ 40 VDC · Weight. 12 lbs.	Requires too many rpm to produce power in winds of less than 20 mph.  If you want to use this one gear it up.
Ametek 50VDC	· Nominal voltage 50 VDC   · No load amps 0.40 · Shaft 1/2″ diameter. x 1 1/4″ long · 4″ diameter. x 4 7/8″ long · 1200 RPM @ 50 VDC · Weight. 11 lbs.
Ametek 50VDC	· Nominal voltage 50 VDC   · No load amps 0.60 · Shaft 5/8″ diameter. x 1 7/8″ long · 4″ diameter. x  7″ long · 1700 RPM @ 50 VDC · Weight. 12 lbs.
Ametek 50VDC 061087F7GOOD	· Nominal voltage 50 VDC   · No load amps 1.0 · Shaft 5/8″ diameter. x 2″ long · 4″ diameter. x  7″ long · 1800 RPM @ 50 VDC · Weight. 12 lbs. Has a 1″ x 1/2″ shaft out the backside	Although it requires higher rpm’s to produce power, it has a higher amperage curve in output which makes up for the higher rpm needed. See image below – a picture of the one I say is the best of the 50′s Note the shaft out the back
Ametek 50VDC NO GOOD	· Nominal voltage 50 VDC   · No load amps 0.60 · Shaft 1/2″ diameter. x 1 1/4″ long · 4″ diameter. x  4 7/8″ long · 2100 RPM @ 50 VDC · Weight. 11 lbs.
Ametek 60VDCNO GOOD!	Not even worth typing the info. (that bad)
Ametek 72VDC	· Nominal voltage 72 VDC   · No load amps 0.41 · Shaft 5/8″ diameter. x 1 7/8″ long · 4″ diameter. x   7″ long · 1800 RPM @ 72 VDC · Weight. 12 lbs.
Ametek 99 VDC 010300F6 THE BOSS EXCELLENTOutput. See data below. Data	· Nominal voltage 99 VDC   · No load amps 0.59 · Shaft 5/8″ diameter. x 2 3/16″ long       · 4″ diameter. x   9″ long · 535 RPM @ 99 VDC · Weight. 16 lbs.	ALL GONE. No surplus that I have been able to find. I have not ran across one for close to two years.  If you find one congratulations to you!

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