i have a DC motor that needs 230 volts from electricity to work if i reversed the rotation of the motor how many volts will the motor produce?
2007-04-18 05:26:09 · 6 answers · asked by Anonymous in Science & Mathematics ➔ Physics
To clarify the question I think you are asking:
You have a motor designed to run on 230 volts DC. With no load attached, let's say it runs at 1000 RPM.
Now disconnect the power source and turn the shaft at 1000 RPM with a water wheel or wind turbine. Measure the voltage where you would normally connect the power.
If the motor's magnetic field was produced by an electromagnet using that same 230VDC supply, the voltage will be zero. You just have a turning shaft but no electromagnetic fields.
If you provide a separate power supply for the field coils, or if the field is produced by permanent magnets, then the voltage with no electrical load connected would probably be well over 300-400 volts.
If your motor is designed to be a motor rather than a generator, and it normally produced a useful mechanical output of 1 horsepower, then using it as a generator driving a load will probably produce a useful electrical output of about 1/4 to 1/3 horsepower. It will work as a generator, but not nearly as well as a machine designed to be a generator.
2007-04-18 13:19:59 · answer #1 · answered by Frank N 7 · 0⤊ 0⤋
It's a motor not a generator it can't produce electricity. I can not see why it would not take 230 volts if you choose to run the motor in the oposite direction.
2007-04-18 05:38:05 · answer #2 · answered by ablair67 4 · 0⤊ 1⤋
You mean if you turn the motor shaft, will it produce electricity?
It depends on the rotation speed, and on the number of poles. Why don't you just try it? Experience is a million time more interesting than formulas.
2007-04-18 05:38:01 · answer #3 · answered by catarthur 6 · 0⤊ 0⤋
there's a honest threat you'll burn out the motor in case you run it very lengthy on 12 volts. you need to learn both torque and %. it must be extra effectual once you've a variable voltage powersupply so that you need to ascertain what takes position at 8-9-10 volts
2016-12-04 06:16:38 · answer #4 · answered by ? 4 · 0⤊ 0⤋
The first guy didnt understand your question
In theory, if you spin the motor the same speed that it usually runs at you should generate the same voltage it uses to run, and if there was no friction you it would produce the equal amount of power that it takes to make it turn.
2007-04-18 05:40:23 · answer #5 · answered by frigon_p 5 · 0⤊ 0⤋
none, it can work in both directions.
by reversing the polarity you reverse the rotation
2007-04-18 05:30:05 · answer #6 · answered by RUSSELLL 6 · 0⤊ 1⤋