I want to change the engine into a generator

The motors are all reversible: mechanical power input --- the motor can become a generator;

Electrical power input --- the motor can become an electric motor (motor).

So as long as your motor provides mechanical power (use the main motor to turn it), it can generate electricity.

Considerations must also be taken into account during the specific implementation: 1) Connection to the electricity grid to produce electricity; It's very simple, as long as its speed exceeds the synchronous speed, it can generate electricity and produce power. to the electricity network.

2) It is more difficult to operate alone to power the load. The capacitor must be connected in parallel to the output end to provide it with a capacitive reactive current to excite it as the output power increases; , the capacitor connected in parallel mustcapacity must also be increased.