How can I achieve a self running 230V generator using an electric motor with an alternator

One method to construct a self-running 230V generator using an electric motor and an alternator involves the following steps:

Obtain an electric motor and an alternator. Choose a motor that is capable of generating the desired output power and an alternator that is compatible with the motor's speed and voltage.
Connect the motor to the alternator. Use a belt or coupling to connect the motor's shaft to the alternator's shaft. Ensure that the rotation directions of the motor and alternator are aligned.
Add a capacitor bank. Connect a capacitor bank across the alternator's output terminals. The capacitance value should be selected to resonate with the alternator's inductance. This will improve the alternator's output voltage and stability.
Charge the capacitor bank. Apply a voltage to the capacitor bank using a battery or other power source. This will create an initial magnetic field in the alternator.
Start the motor. The motor will begin to rotate and drive the alternator. As the alternator rotates, its magnetic field will induce a voltage in its windings. This voltage will be used to charge the capacitor bank and power the load.

What are the advantages of using an electric motor and alternator to generate electricity?
How can I determine the appropriate size of motor and alternator for my application?
What safety precautions should I take when building and operating a self-running generator?
Can I use a gasoline engine instead of an electric motor to drive the alternator?
What are the potential applications for a self-running 230V generator?

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How can I achieve a self running 230V generator using an electric motor with an alternator?