Novel high efficiency double excitation brush generator

Abstract

The invention discloses a novel high efficiency double excitation brush generator, which comprises a rotor and a stator. The rotor is composed of a transmission shaft, a N-pole claw pole, a S-pole claw pole and a excitation coil, wherein the N-pole claw pole and the S-pole claw pole are composed of soft magnetic materials, the excitation coil is arranged inside the N-pole claw pole and the S-pole claw pole, and the claw pole of the N-pole claw pole and the S-pole claw pole are interlaced distributed, which is characterized in that a permanent magnetic block is arranged between two adjacent claw poles in the N-pole claw pole and the S-pole claw pole, and one side of the permanent magnetic block closed to the N-pole claw pole is N pole, the side closed to the S-pole claw pole is S pole. The polar claw rotor of the invention, a magnetic induction line produced by claw pole and the magnetic induction line produced by the permanent magnetic block through the external stator at the same time, therefore, the magnetic induction line strength of the external magnetic circuit on the rotor is increased, the power output is effectively increased as generator, the efficiency of double excitation brush generator is improved and a enameled wire is saved. The generator has the advantages that the structure is simple and reasonable; the beneficial effect is obvious, and suitable for application and popularization.

Description

technical field [0001] The invention relates to a high-efficiency double-excitation brushed generator, more precisely, a permanent magnet block is regularly embedded between two magnetic poles of a claw-pole rotor to improve efficiency. Background technique [0002] Most of the existing generators are pure permanent magnet generators or pure electric excitation generators, and electric excitation generators have double excitation. For the structure of the double-excitation generator, one is to string a ring-shaped magnetic steel on the magnetic column of the claw pole, and the other is to directly inlay the magnetic strip on the pole claw. These two forms of double-excitation generator Both generators are used to excite and generate electricity without an external power supply. In both cases, the generator can only generate electricity in advance, and the power generation of the generator cannot be increased. Moreover, the permanent magnets in the above two double-excitatio...

AI Technical Summary

Problems solved by technology

[0003] The invention not only overcomes the disadvantage that the permanent magnets cannot be added more in the existing double-excitation generator embedded with magnetic blocks, but also improves the efficiency of the double-excitation brushed generator and saves enameled wires.

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