I would like to find out what blades I should use for this motor. I have a Reliance Electric DC servo motor Model E728 P/N 0728-06-029 that I would like to use for my first project. I have searched google and can not get the specs on this motor to determine if it is suitable for a wind generator. So I hooked it up to my milling machine and recorded the Volts at a given RPM. Is it possible to determine how many amps or watts this will produce ? Below is the info I have. RPM Volts DC 180 10 200 12 280 15 360 20 450 25 1000 50 1500 75 1800 100 2400 125
I just found the specs on the motor max voltage = 120 DC max current = 38 amps max cont current = 7.2 amps George
George, Looks like a good motor. The motor has a pretty good amp rating so you might want to go with 5 HyperSpin blades to get it turning in low winds. But, you would also be OK with 3 HyperSpin blades. If you want to test the amps, you can short the motor by connecting the pos. and neg. wires together. You will have to short them together through your voltmeter so you can read the amps. Make sure you check what how many amps your voltmeter can measure without breaking. It should be listed right on the front of your voltmeter. You can go about 50% above that number for a few seconds without destroying your voltmeter.
I have a VAWT built around a PM tread mill motor, its rated at 180Volts 4 Amps @ 4000RPM (720w max motor) I am going to connect it to a 24v system and calculate that cut in speed should be around 500rpm (but not certain) I want the mill to take advantage of the lower speed winds that are reasonably consistant in my area, stronger wind is less frequent and usually very gusty. I predict the usual on-shore breeze to be around 15 - 30km/hr or around the 10-20mile/hr mark, this is the speed I'll be hoping to get charge voltage from as this is the most consistant wind speed range. I am tossing up between the 3x 24" Turbo Tourqe blades and the 80inch blades, any advice would be greatfull
I do not understand the questions because our blades are designed for HAWTs not VAWTs. If you are asking what blades should be used on the 180 Volt, 4 amp, 4000 rpm motor, I would recommend three TurboTorque blades. I do not think this motor would be well suited for a 24 volt battery bank as the cut-in is a bit high. It will work on a 24 volt battery bank but I think you would be better off using it on a 12 volt battery bank.
oops, yes I ment HAWT, had been a long day when I posted......... Thanks for the advice I suspected the rpm to be little high for 24v (at least for the wind speeds I am aiming for) If I used voltage doublers or for argument sake a 12v system would you still recommend the turbo torque blades or something slightly slower?
I would recommend three TurboTorque blades and a 12 volt battery bank. It should hit charging voltage in clean 7-8 mph wind.
I have a 24 volt 1645 watt hurricane unit I purchased from hydrogen appliances. The plastic blades just don't have the torque needed to sustain a steady current so this unit is basicly useless to me. I feel very strongly that by changing the blades I can make it a good working unit, but by no means what they rated it for.... I think your 80" 3 blade unit would work good or do you think your 5 blade 60" unit would work better?
I have the Air-403 which is the prequel to the Air-X and looks almost identical on the outside. What blades do you recommend for the following motor: MODEL AIR 403 RATED OUTPUT 400w *28mph RATED ROTATION 2000rpm CUT-IN WIND SPEED 6mph NUMBER OF BLADES 3 ROTATION-DIAMETER 46 in BLADE MATERIAL Carbon reinforced thermoplastic TYPE AIRFOIL True LATERAL THRUST 150 lbs. GOVERNOR Aerolastic 48mph ---------- OPTIONAL STOP Dynamic Switch UNIT WEIGHT 13 lbs. PM alternator VOLTAGE 12V CHARGE CONTROL Built-in
From feedback from customers, the five HyperSpin blades (60 inch) are your best bet. The 80 inch WindGrabbers will easily turn that alternator in the slightest wind but the rpms will be much lower compared to the 60 inch rotor. Thus, you will make less power. You should see decent rpms with the 60 inch rotor in 8 mph winds.
I know a few customers who have had good success using our three 24 inch TurboTorque blades. The downside is that these blades make the Air403 "front heavy". To counteract this, the customers who used these blades had to increase the surface area of the stock Air403 tail.
My generator puts out 120v and 16.6 amp on the current. It weighs about 140lb and I now have 3x 13' blades on it. What blades would you recommend?
Three 13 foot diameter blades sounds about right. Do you know that volts to rpm ratio? Are you battery bank charging or grid tie?
right now i am trying to figure what kind of charge controller to use so i can hook it to either my battery bank or a grid tie thanks jack
I have been using a hub with five pvc blades 26" long (they do break) with my Fisher & Paykel motor. Due to our wind conditions and the cogging they start @ about 25kph and I estimate 400-500RPM creating about 150Vac 3phase. I have tried another hub with three longer pvc blades and they do not generate enough interia to over come the cogging and I am considering the 35" Windgrabber blades. We live on the southern edge of Western Australia, there are not many days without wind. What blades do you recommend?
Did you modify the F&P motor by adding more powerful magnets? If not, I would recommend our five HyperSpin blades. We have had several customers use these blades on the F&P motor successfully.
I have a pm motor 600w, 150 volts, 14 amps, 2000 Rps, with a permanent magnetic and two brushes. I currently have your 28in blades (5) and when the wind drops below 15mph my grid tie inverter drops out (amps are between 2 and 5 with the wind I have). What blades do you recommend?
