Differences:

1. Principle: The motor is made by the principle that the energized coil rotates under force in the magnetic field; the generator is made by the electromagnetic induction phenomenon.

2. Energy conversion: The motor converts electrical energy into mechanical energy; the generator converts mechanical energy into electrical energy.

Relationship:

1. Related to electricity and magnetism: Both the motor and the generator are related to electricity and magnetism, and use the interaction between current and magnetic field to achieve energy conversion.

2. The same internal structure and parts are the same: The motor and the generator are similar in part of the internal structure, such as the magnetic field and the coil.

The electrical energy emitted by the generator is related to the strength of the magnetic field and the mechanical energy transmitted to the motor shaft; the mechanical energy output to the shaft by the motor is related to the electrical energy input to the motor by the power grid and the strength of the magnetic field. The magnetic field, as a medium, realizes the process of electromechanical energy conversion. The design principle of the generator is to use the law of electromagnetic induction and the law of electromagnetic force to construct a suitable electromagnetic induction magnetic circuit and circuit to achieve the goal of energy conversion.

The working principle of the motor is to use the force generated by the magnetic field on the energized coil to make it rotate, converting electrical energy into mechanical energy. The working principle of the generator is to generate induced current in the magnetic field through a rotating coil, converting mechanical energy into electrical energy.

Based on the electromagnetic principle, motors and generators have a wide range of applications. The development history of generators includes different types of generators such as hand-cranked DC generators, self-excited DC generators, and ring armature generators. The motor is constantly improving. For example, the variable frequency motor has a wider speed regulation range, higher design quality and better parameter matching ability, which can achieve precise control.

In general, the motor converts electrical energy into mechanical energy, while the generator converts mechanical energy into electrical energy. They have obvious differences in principle, energy conversion and application, but they are all electromagnetic devices that work based on the electromagnetic principle.

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