CN2243738Y

CN2243738Y - Brushless inductive electric power generator for automotive

Info

Publication number: CN2243738Y
Application number: CN 95241879
Authority: CN
Inventors: 苏易林; 胡明正; 黄跃群; 徐志清
Original assignee: Individual
Current assignee: Individual
Priority date: 1995-07-18
Filing date: 1995-07-18
Publication date: 1996-12-25
Anticipated expiration: 2005-07-18

Abstract

The utility model relates to a brushless inductive electric power generator for an automotive, which is characterized in that a stator iron core of the brushless inductive electric power generator for an automotive is provided with a large groove and a small groove; a stator winding is composed of an armature winding (three-phase or single-phase) and an exciting winding, and the stator winding is embedded into the large groove and the small groove. A rotor is a solid steel body or a laminated structure made from magnetic materials, and the rotor is provided with teeth and grooves which are specially designed and are not provided with coils. Accordingly, the brushless inductive electric power generator for an automotive has the advantages of simple structure and firm property. Even though the brushless inductive electric power generator for an automotive operates under the high speed of 12500 turns/minute, the mechanical strength of the electric motor is higher; the vibration resistance is strong, and the service life of the generator is long. Since the brush is not provided, the sparks in the operation can be eliminated. The work of the brushless inductive electric power generator for an automotive is same to the work of a claw-pole type generator. Thus, the utility model not only reduces the interference to a vehicle-carried radio apparatus, but also can reduce the maintenance cost.

Description

Brushless type inductor type automobile current generator

The utility model relates to a kind of brushless type inductor-type generator.Applicable to automobile current generator and other kinds micro generation unit.

The generator that loads on the domestic and international dissimilar automobiles adopts traditional form to have the small-sized DC generator of carbon brush and mechanical rectification sheet mostly at present.Spark was big when this automobile current generator moved, easy burn-out commutator segment and carbon brush, and bad mechanical strength under the high rotating speed a little less than the antivibration ability, has interference to vehicular radio, and manufacturing is complicated, cost is high, and service life is low.

On May 11st, 1988 Decree of Patent Office of China the CN87213181.5U utility model patent, having introduced a kind of rotor is the small-sized brushless generator of Lundell, its structural principle is identical with Lundell slip clutch in the electromagnetic varispeed motor, only with regard to the claw-pole motor structure, design has three spaces, decide for inside and outside two, the pawl utmost point at forward and backward two ends needs through being welded to form.Thereby manufacturing processing and assembling etc. are all complicated, and under high rotating speed, mechanical strength is still relatively poor, as the welding quality instability, and the electromagnetic performance in the time of also can influencing the motor operation.

The purpose of this utility model is to provide a kind of brushless inductor type automobile current generator at the deficiencies in the prior art, the stator core that is characterized in this generator has vat and sulculus, stator winding is made up of armature winding (three-phase or single-phase) and excitation winding, and embed in vat and sulculus, rotor is the solid steel body or the lamination of magnetic material, but does not have coil.It is simple in structure, and parts are few, and processing and fabricating is easy, and cost is low; Rotor structure is firm, even if in 12500 rev/mins of operations down at a high speed, electromechanics intensity is also higher, and the antivibration ability is strong, the motor long service life; Since brushless, operating spark eliminated, the same with claw-pole type generator, not only reduced interference, and reduced operating maintenance, recondition expense vehicular radio.

The brushless type inductor type automobile current generator that the utility model provides such as Fig. 1, Fig. 2, Fig. 3, shown in Figure 4:

Fig. 1 is a brushless type inductor type automobile current generator structural representation

1 rotor, 2 stator cores, 3 stator winding (containing armature winding and excitation winding), 4 cooling fans, 5 end caps, 6 silicon rectifiers.

Fig. 2 is the rotor structure schematic diagram

7 teeth, 8 grooves.

Fig. 3 is stator core and winding schematic diagram

9 iron core vats, 10 sulculuses, 11 armature winding (three-phase or single-phase), 12 excitation winding.

Fig. 4 is the generator fundamental diagram

The load of 13 generators, 14 automatic excitation regulators, 15 drive prime mover of generator.

Generator contains stator core 2 and stator winding 3, stator core has vat 9 and sulculus 10, stator winding 3 is made up of armature winding (three-phase or single-phase) 11 and excitation winding 12, and embeds in vat and sulculus, and stator and rotor tooth, groove number and pole pair number average are by the designing requirement decision; Rotor 1 is the solid steel body or the lamination of magnetic material, has tooth 7 and groove 8 on the rotor, and by tooth, groove number form shape and size design, to obtain the armature voltage of expection, rotor does not have coil.Stator core 2 and front and rear cover 5 are fastened on the support of generator, and silicon rectifier 6 is installed in the end cap of non-shaft stretching end, and the load 13 on rectification output direct current steam supply car is as accumulator jar etc., and its positive and negative electrode wiring is identical with traditional automobile current generator.Cooling fan 4 is housed in the end cap of shaft extension end, and excitation winding 12 has been received automatic excitation regulator 14, and rotor 1 links with the prime mover 15 that drives generator.

The operation principle of generator: after this generator is supplied with the exciting current of excitation winding via field regulator 14, when rotor 1 during, be reacted to induction generation corresponding frequencies in the armature winding of stator side with n rev/min rotating speed rotation The interchange electromotive force of (Z2 is rotor tooth or groove number in the formula), output direct current supply load 13 behind silicon rectifier, when the rotation speed change of the automobile prime mover 15 that drives generator, excitation regulation 14 is adjusted exciting current immediately, makes the direct voltage of rectifier output keep constant.

The utlity model has following advantage:

1, this generator amature is the solid steel body or is lamination, and rotor does not have coil, and is simple in structure, and parts are few, processing and fabricating is easy, and low cost of manufacture is because rotor structure is firm, even if in 12500 rev/mins of operations down at a high speed, electromechanics intensity height, resistance to shock is strong, and motor service life is long.

2, owing to brushless, eliminated operating spark, the same with claw-pole type generator, not only reduced interference, and reduced maintenance in service, recondition expense automobile mounted wireless device.

3, after this machine formally drops into batch process, be bound to be subjected to users and welcome, remarkable economic efficiency and social benefit are arranged.

Claims

Brushless type inductor type automobile current generator, contain stator core and stator winding, rotor and support, the stator core (2) that it is characterized in that this brushless type inductor type automobile current generator has vat (9) and sulculus (10), stator winding (3) is made up of armature winding three-phase or single-phase (11) and excitation winding (12), and embed in vat and sulculus, rotor (1) is the solid steel body or the lamination of magnetic material, have tooth (7) and groove (8) on the rotor, there is not coil on the rotor, stator core (2) and front and rear cover (5) are fastened on the support of generator, silicon rectifier (6) is installed in the end cap of non-shaft stretching end, load (13) on rectifier output direct current steam supply car, the end cap of shaft extension end is equipped with cooling fan (4), the electric current that flows into excitation winding (12) is subjected to automatic excitation regulator (14) control, and rotor (1) is connected with the prime mover (15) that drives generator.