The principle and structure of the synchronous generator

Synchronous generator is manufactured according to the principle of electromagnetic induction. The main part of figure 1. Modern AC generator is usually composed of two parts of the coil; in order to improve the strength of the magnetic field, a part of the coil around a stack of a piece of metal magnetic conductive good performance of the cylinder inner wall of the groove, the cylinder is fixed on the frame called stator. Stator coil can output the induced electromotive force and the induced current, so also known as the armature. A strong permeability groove metal sheet laminated cylindrical generator and another part of the coil is wound on the stator cylinder inside the rotor, called. A shaft extends through the center of the rotor and fasten together, both ends of the shaft and the base form bearing support. Between the rotor and the stator wall small and uniform gap and flexible rotation. This is called a brushless synchronous generator of the rotating magnetic field structure.

When working, the rotor coil with DC DC magnetic field is formed, in the diesel engine driven rapid rotation of the rotor, constant magnetic field is rotated, the stator coil magnetic field lines cutting the induced electromotive force, the generator can generate electricity.

1 - front cover; 2 - wind cover; 3 to 4 - bearing; stator; 5 - terminal box side plate; the 6 voltage regulator; 7 - regulator bracket; 8 - terminal box cover; 9 - terminal box before and after the board; 10 - terminal plate; 11 to 12 - terminal wiring board bracket; box side plate; 13 - lifting; 14 - bearing cover; 15 - air inlet cover; 16 - rear cover; 17 - excitation stator; 18 - excitation stator fixing bolts; 19 - bearing; 20 rotating rectifier exciter armature; 21; 22 - grounding plates; 23 to 24 - fan; rotor; 25 - permanent magnet machine; 26 - permanent magnet machine shaft; 27 - permanent magnet machine rotor - stator permanent magnet machine; 28; 29 - permanent magnet machine stator fixing bolts; 30 - permanent magnet machine rotor fixed bolt; 31 - washer; 32 - permanent magnet machine cover

The rotor and a constant magnetic field is diesel driven by rapid rotation, the formation of a rotating magnetic field is small and uniform gap between the rotor and the stator, called the rotor magnetic field or the magnetic field. The normal work of the generator stator coil armature are connected to the load EMF of stator coil magnetic field lines are generated after cutting the formed by the load induced current, this current flows through the stator coil will produce a magnetic field in the gap, known as the magnetic field of the stator or armature magnetic field. The rotor magnetic field and stator magnetic field in the gap between the stator and the rotor so small and uniform, the two magnetic field interaction constitute a composite magnetic field. The generator is made of synthetic magnetic line cutting stator coil and power generation. As the stator magnetic field caused by the magnetic field of the rotor, and they always keep a after a first and at the same speed synchronization relationship, so called generators for synchronous generator. The synchronous generator has many advantages in mechanical structure and electrical performance.