Three-phase asynchronous generator

Abstract

The invention discloses a three-phase asynchronous generator. The three-phase asynchronous generator comprises a generator, an excitation capacitor CA connected with each phase of a three-phase stator winding of the generator, a multi-contact centrifugal switch K1 arranged on a connecting branch, and a diesel engine or a water turbine for driving a generator rotor to rotate, wherein the three-phase stator winding of the generator is connected with a power transmission line. According to the three-phase asynchronous generator, the multi-contact centrifugal switch K1 is arranged; after the generator is started, the multi-contact centrifugal switch is automatically closed, the excitation capacitor CA supplies power to the generator, and when a certain voltage of the generator is reached, the generator charges the excitation capacitor CA; and when the generator stops working and the rotational speed of the generator is reduced to a certain extent, the multi-contact centrifugal switch K1 is automatically disconnected, and the connection between the generator and the excitation capacitor CA is cut off, so that the discharge of the excitation capacitor CA is avoided and at the moment, the excitation capacitor CA can be used for power regeneration of the generator.

Description

technical field [0001] The invention belongs to the field of power generation equipment, and in particular relates to a three-phase asynchronous generator. Background technique [0002] The three-phase asynchronous generator uses a prime mover (diesel engine or water turbine) to drive the rotor to rotate. When the rotor speed reaches the rated value, a three-phase electromotive force is induced on the three-phase winding, and a three-phase symmetry is obtained between the phase line and the neutral line. Phase voltage, the three-phase symmetrical line voltage is obtained between the phase line and the phase line. At this time, the generator can supply power to the corresponding load. [0003] For a three-phase asynchronous generator, an excitation capacitor needs to be connected to the winding so that the motor can be self-excited to establish a voltage, and a switch is set on the connection branch. When starting a three-phase asynchronous generator, a manual switch is requ...

AI Technical Summary

Problems solved by technology

[0005] In order to overcome the above problems, the object of the present invention is to provide a three-phase asynchronous generator, which solves the problem of inconvenient operation and operation error caused by the existing manual operation of the generator start switch, which leads to the failure of normal power generation

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