Generating electricity with a regular motor
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When a regular motor rotates, it also moves in a manner that cuts through magnetic field lines; then why can’t it generate electricity? I tried to use a motor as a generator, but it didn’t work – I’m not sure what the problem is
Generators are different from ordinary motors
Why is it different? Aren’t they all coils cutting magnetic field lines?
Theoretically, it should be possible, but you should check the motor’s rated speed
This post was last edited by Ku Liang Zhi Le on 2016-10-6 at 10:46. By connecting several power capacitors in parallel to the stator of a conventional asynchronous motor, and using a diesel engine to rotate the rotor, electricity can be generated.
Does a power capacitor have the effect of increasing the magnetic field?
The rotor of a conventional asynchronous motor is a closed coil; when driven by a diesel engine, no rotating magnetic field is generated, and therefore no voltage is produced, and no electricity can be generated.
By connecting several power capacitors in parallel to the stator of a conventional asynchronous motor, and using a diesel engine to rotate the rotor, electricity can be generated. The stator structure of a conventional squirrel-cage asynchronous motor features a rotor made up of laminated silicon steel sheets, into which several copper bars are poured, with both ends sealed using short-circuit rings ； The stator structure consists of several windings in a stator made up of stacked silicon steel sheets ； When a squirrel-cage asynchronous motor is in operation, three-phase alternating current with a 120-degree difference between them is supplied to the stator, thereby creating an alternating magnetic field. As the rotor cuts through these magnetic field lines, electromagnetic interaction causes the motor to rotate. During power generation, several power capacitors are connected in parallel to the stator. Due to the residual charge in these capacitors, as the rotor rotates it interacts with this residual charge, thereby gradually strengthening the stator’s magnetic field. After a certain period of time, when the strength of the magnetic field becomes sufficient, electricity is generated at the stator’s terminals. In other words, the power capacitor provides a leading excitation current. My workplace used to rely on a diesel engine, ordinary squirrel-cage asynchronous motors, and power capacitors as an emergency power supply.
The motor is used for driving, while the generator is the one that is driven. The motor converts electrical energy into mechanical energy, whereas the generator converts mechanical energy into electrical energy. Ordinary squirrel-cage AC motors require a certain capacity of capacitor in order to generate electricity.