Input torque and speed for 1 KW generator.
Input torque and speed for 1 KW generator.
(OP)
How to calculate input torque and speed, i want to generate 1 kw of power. I am design a pneumatic motor to drive generator.
and also if speed of input pneumatic motor varies +-300rpm
and also if speed of input pneumatic motor varies +-300rpm
Suyog Patil
CAD Enginer
NX 7.5. 8, 8.5 9, 10 TC-9





RE: Input torque and speed for 1 KW generator.
n is, of course, 1500 RPM. But you need to use the rad/s speed to find torque. So w = 1500*2*PI/60=157 rad/s
Torque needed is then power/w=1000/157=6.37 Nm
If efficiency is 80 percent, you need to increase torque to 6.37/0.80=7.96, say 8.0 Nm
To guarantee full output at lowest speed you need to use 1500 - 300 RPM. That will increase needed torque correspondingly.
w=126 rad/s torque at 100 % efficiency = 7.96 Nm and, at 80 %, 7,96/0.80=9.95, which is very close to 10 Nm.
The voltage regulation is not your problem, but should not be forgotten. It should also be noted that a PM generator plus an inverter probably is the best way to produce a stable AC or three-phase system from the variable generator output. If your output shall be DC - well, there are several ways to skin that cat also.
Gunnar Englund
www.gke.org
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Half full - Half empty? I don't mind. It's what in it that counts.
RE: Input torque and speed for 1 KW generator.
I guess you deal with 50 HZ .
So ,4 pole , 1500 RPM motor , 1250 KW motor shall generate a torque of 6631 N-m torque and will be suited for generating a 1000 eKW.
+/- 300 RPM shall mean that the generator frequency shall be 40HZ @ 1200 RPM (-300 RPM)( thus your generator breaker may trip due to under frequency ) and shall be 60 HZ(+300 RPM) @ 1800 RPM. This time generator breaker may trip due to over frequency.
RE: Input torque and speed for 1 KW generator.
How are you making air?
Get the electricity closer to the source of power.
RE: Input torque and speed for 1 KW generator.
Bill
--------------------
"Why not the best?"
Jimmy Carter
RE: Input torque and speed for 1 KW generator.
RE: Input torque and speed for 1 KW generator.
Bill
--------------------
"Why not the best?"
Jimmy Carter