Method for improving efficiency of synchronous generator

Abstract

The invention provides a method for improving the efficiency of a synchronous generator. The characteristics that 'the relation of the size of an excitation magnetic field and the input power of the generator when the synchronous generator works is small, and the output voltages of the synchronous generator is in direct proportion to the turn number of a stator coil and the strength of the excitation magnetic field' are used for achieving the method. In the designing process, the strength of a rotor excitation magnetic field is designed to be as bigger as possible, and when the generator works, no mater whether loads are big or not, the strength of the rotor excitation magnetic field is made to be at or close to the maximum value; the number of the turns of each phase of a three-phase stator coil is reduced; the stator coil of the generator is designed to be of a power source structural mode with multistage different voltages and with the turn number capable of being adjusted, when the generator works, a power source with the voltage value being more corresponding to the number of the turns of the stator coil is chosen to be connected according to the loads, and then the excitation magnetic currents of a rotor is fine tuned to enable output voltages to reach a rated value. The method for improving the efficiency of the synchronous generator is used for a permanent magnet synchronous generator which is then made to have the performance of adjustable voltages, and the energy-saving effect is achieved.

Description

technical field [0001] The invention relates to a method for improving the efficiency of a synchronous generator, which belongs to the field of alternating current power generation. Background technique [0002] The phenomenon of electromagnetic induction and the basic laws of electromagnetic induction are the theoretical basis for designing and manufacturing transformers and synchronous generators. A transformer is an electrical device that converts an alternating current of a certain voltage value into another voltage value of the same frequency. The power generation principle of a synchronous generator comes from the phenomenon of electromagnetic induction. All kinds of electromagnetic induction phenomena should follow the law of electromagnetic induction, among which Faraday electromagnetic induction The law is one of the main theoretical basis for people to engage in the research, design and application of synchronous generators. The law points out that "when the magnet...

AI Technical Summary

Problems solved by technology

The permanent magnet synchronous generator has the advantages of small size, light weight, high efficiency, and simple structure, but it has not been widely used in the field of power generation due to the problem of voltage regulation.

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