CN2272164Y

CN2272164Y - Brushless magnetoelectric ac generator for vehicle

Info

Publication number: CN2272164Y
Application number: CN 96201919
Authority: CN
Inventors: 麦永强; 韦清; 闭克农
Original assignee: Individual
Current assignee: Individual
Priority date: 1996-02-05
Filing date: 1996-02-05
Publication date: 1998-01-07
Anticipated expiration: 2006-02-05

Abstract

The utility model relates to a permanent magnetic AC generator without brushes for automobiles. The utility model is characterized in that a front claw pole and a rear claw pole are enchased with permanent magnetic blocks; a magnetic pole loop between the permanent magnetic blocks on the front claw pole and the rear claw pole is approximatively similar to magnetic pole loops on the excitation windings on the claw poles; three reactance windings are wound on a magnetic yoke 9 under the excitation windings; the three reactance windings are respectively connected to stator windings of three phases before a rectifier in series. The utility model has the advantages of less magnetic leakage, large power, and better voltage stabilizing effect.

Description

Brushless Permanent Magnet

The utility model relates to a kind of alternator, particularly is fit to the brush-less permanent magnetic Ac generator that motor vehicles such as automobile, tractor use.

Existing vehicle alternator is because complex structure, wiring point is many, carbon brush is easy to wear, bring many troubles to the user, in recent years people improve this generator, mainly be in motor, to have increased permanent magnets, and carbon brush and the numerous and diverse wiring of part have been saved, make generator simpler, the more reliable performance of structure that becomes, Chinese patent 94210973 as the applicant's application, but the weak point that the alternating current generator of this structure also exists is needs uses the controllable silicon voltage stabilizing circuit, and repacking bothers on existing automobile; Another part Chinese patent 94217492, its rotor is to be embedded with the different permanent magnets of polarity respectively on the left claw of employing, the right claw utmost point top relative with stator, the magnetic patch loop of the magnet exciting coil that magnetic pole loop between the permanent magnets and pawl are extremely gone up is orthogonal, this electric generator structure is also simpler, but its rotor leakage is bigger, and generator voltage regulation result when high speed is poor, and output voltage is out of control, the voltage stabilizing line is complicated, and is especially more obvious when the generator of making 14 volts.

The purpose of this utility model provides and a kind ofly can overcome the deficiencies in the prior art part, have low speed during to high speed voltage regulation result all good, rotor leakage is less, the voltage stabilizing circuit is simple, does not need the brushless Permanent Magnet of controllable silicon voltage stabilizing again.

The technical scheme that the utility model solves is: brushless Permanent Magnet comprises front end housing, rear end cap, stator, the stator coil winding, rotating shaft, the pawl utmost point, be characterized in being inlaid with permanent magnets on extremely at the fore paw utmost point and rear solid end, fore paw is extremely gone up or rear solid end extremely to go up two adjacent permanent magnets polarity identical, two permanent magnets polarity that the front and back pawl is extremely relative are different, and their line of centres and shaft parallel, the direction in magnetic pole loop that the direction that pawl is extremely gone up the magnetic pole loop between the permanent magnets before and after making and pawl are extremely gone up magnet exciting coil is close, rather than it is orthogonal, in addition on yoke, be wound with three reactance windings under the magnet exciting coil, three reactance windings are connected on respectively on the stator winding of three phase places before the rectifier, reactance winding and excitation winding separate with insulating material, the number of turn of each reactance winding is 25～150 circles, in order to save permanent magnets, can extremely go up whole setting-in permanent magnets at the front and back pawl and also can inlay permanent magnets every a pawl utmost point.

The utility model has the advantages that: since fore paw is extremely gone up or rear solid end extremely to go up two adjacent permanent magnets polarity identical, two permanent magnets polarity that the front and back pawl is extremely relative are different, and their line of centres and shaft parallel, thereby the magnetic pole loop between the formation permanent magnets is close with the magnetic pole loop that pawl is extremely gone up magnet exciting coil, rather than it is vertical mutually, like this, the leakage field of rotor can reduce about 40%, improved generating efficiency, be wound with three reactance windings on the yoke He under the magnet exciting coil, three reactance windings are connected on respectively on the electronics winding of three phase places before the rectifier, voltage problem out of control when both having solved the generator high speed has also solved the voltage stabilizing problem of making 14 overhead generators.

Describe one of the present utility model below in conjunction with accompanying drawing and implement structure:

Fig. 1 is the cutaway view of brush-less permanent magnetic automobile current generator;

Fig. 2 is the electrical schematic diagram of generator;

Fig. 3 is a schematic diagram of all inlaying the pawl utmost point rotor of permanent magnets;

Fig. 4 is that the pawl utmost point of being separated by is inlayed the pawl utmost point rotor schematic diagram of permanent magnets.

See among the figure, between front end of shield 1 and rear end cap 5, stator 4 is arranged, the fore paw utmost point 6 of rotor links to each other with the rear solid end utmost point 11 usefulness metallic interconnects 12, before and after pawl be inlaid with permanent magnets 3 on extremely, two adjacent on the fore paw utmost point 6 or on the rear solid end utmost point 11 permanent magnets 3 polarity are identical, two permanent magnets polarity that the front and back pawl is extremely relative are different, and their line of centres and shaft parallel, thereby the magnetic pole loop between the formation permanent magnets 3 is close with the magnetic pole loop that pawl is extremely gone up excitation (stator) coil 2, on yoke 9, magnet exciting coil is wound with three reactance windings 8 for 7 times, these three reactance windings are connected on respectively on the stator winding 2 on three phase places before the rectifier 13, the number of turn of each reactance winding is 25～150 circles, the positive pole of rectifier 13 connects adjuster 14, another termination magnet exciting coil winding 7 of adjuster 14, reactance winding 8 separates with excitation winding 7 usefulness insulating material, and yoke 9 usefulness bolts are connected on the rear end cap 1.

The utility model has been manufactured experimently out model machine, and successfully moves on the vehicle of applicant oneself repacking, and it is little, bigger than merit to have a leakage field, and voltage regulation result is good.

Claims

1. brushless Permanent Magnet, comprise front end housing (1), rear end cap (5), stator (4), stator coil winding (2), rotating shaft (10), the pawl utmost point, it is characterized in that: on the fore paw utmost point (6) and the rear solid end utmost point (11), be inlaid with permanent magnets (3), two permanent magnets (3) polarity that the fore paw utmost point (6) is gone up or the rear solid end utmost point (11) is upward adjacent is identical, two permanent magnets polarity that the front and back pawl is extremely relative are different, and their line of centres and shaft parallel, upward and under the magnet exciting coil (7) be wound with three reactance windings (8) in yoke (9), three reactance windings (8) are connected on respectively on the stator winding (2) of rectifier (13) three phase places before.

2. generator according to claim 1 is characterized in that upward whole setting-in permanent magnets (3) of the fore paw utmost point (6) and the rear solid end utmost point (11), also can inlay permanent magnets (3) every the pawl utmost point.

3. generator according to claim 1, the number of turn that it is characterized in that each reactance winding (8) is 25～150 circles.