Synchronous Generator Working Principle——Basic Construction and Maintenance Foundation of Diesel Generator Sets

Synchronous motors are AC motors that operate on the principle of electromagnetic induction. In principle, its work is reversible. It can be operated not only as a generator but also as a motor. Another special operation mode of synchronous motor is synchronous camera, or synchronous compensation machine, which is specially used to send delayed reactive power to the grid to improve the power factor of the grid.
Synchronous motors are mainly used as generators. As an AC power source for various devices, the world's power generation is now mainly generated by synchronous generators. Synchronous generators are one of the three major components of diesel generators (diesel, synchronous generators and control systems). Therefore, it is important to learn and master the structure of the synchronous generator and its working principle. This section mainly introduces the working principle, characteristics and basic types, basic structure, rated value and model of synchronous generator.
1. Electromagnetic induction and right-hand rule According to the knowledge of Electrotechnics, when there is relative motion between the conductor and the magnetic field, when the two are cut to each other, an induced electromotive force is generated in the conductor. This phenomenon is called electromagnetic induction. . If the conductor is closed, a current is generated in the conductor under the action of an induced electromotive force. This current is called an induced current. As shown in Figure 2-7. Place a wire in a uniform magnetic field of two poles and connect a voltmeter to both ends of the wire. When the wire moves at a certain speed perpendicular to the direction of the magnetic field, the pointer of the voltmeter will deflect. The above phenomenon shows that after the wire and the magnetic field move relative to each other and cut each other, an induced electromotive force and an induced current are generated inside the wire.

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