Automobile slotless AC electric generator

Abstract

The invention relates to a automobile slot-less alternate electric generator, which includes a stator, rotor and commutator, the rotor includes a rotary shaft, which is covered by the belt wheel, two polar plates and a sliding ring contacting to a carbon brush, the stator includes a stator iron core and stator coil winded out of the iron core, each polar plate of the rotor includes even magnetic polar arranged with radiating type evenly, each magnetic polar is overlapped and connected together with several pieces of cool rolling direction silicon steel plates, each plate is produced according to the orientation direction, each magnetic polar is winded with excitation coil, the winding direction of the joined excitation coils are reverse, the quantity of the stator is the integer times of 3 which is the quantity of the magnetic polar, the stator iron cores are arranged along the circle evenly, and fixed in the slots of the two ring plate, each stator iron core is connected together with several pieces of cool rolling direction silicon steel plates, each piece of cool rolling orientation silicon steel core is produced with the orientation direction, there has a gap between each magnetic polar and the stator iron core. The electricity generating efficiency reaches above 75%.

Description

technical field [0001] The invention relates to an alternator, more specifically to an automobile slotless alternator. Background technique [0002] At present, the alternators used in various types of automobiles are slotted alternators, that is, several grooves are punched on the stator core made of laminated circular silicon steel sheets insulated from each other. Stator coils are embedded in the slots. Although the slotted alternator used on this automobile has the characteristics of small size and high power, the power generation efficiency is low, and the highest can only reach 50%. The reason is that the stator core and rotor core of the generator are made of low-silicon silicon steel sheet or electrical pure iron, and the low-silicon silicon steel sheet or electrical pure iron is easy to generate heat due to low magnetic permeability and large iron loss, so The power generation efficiency is low. With the progress of society and the improvement of living standards...

AI Technical Summary

Problems solved by technology

In the article "New Materials for Alternator Cores" published in the fourth issue of "Automotive Electrical Appliances" sponsored by the State Machinery Industry Bureau and sponsored by Changsha Automobile Research Institute, the parameters of the mechanical and magnetic properties of the new materials introduced are : Material thickness 0.35mm, iron loss 56W / kg, minimum magnetic flux density 1.72T, yield point 200-220Mpa, using this new material to manufacture the iron core of the automotive alternator, the power generation efficiency is only increased by 10%, that is, the power generation efficiency is not enough high

Images