JPH0510539Y2 - - Google Patents

Description

[Detailed explanation of the invention] Industrial application field This invention relates to an inductor type generator, which is a type of synchronous electric machine, and is particularly designed to locally use expensive laminated materials to generate high-output power. This article relates to an inductor type generator.

〓Prior Art〓 An inductor generator is known as a type of synchronous generator. In this generator, an armature coil and a field coil are provided on the stator, and inductor magnetic poles are provided on the rotor side. Therefore, when the field coil is excited, the magnetic flux density changes at a constant period due to the inductor magnetic poles as the rotor rotates. Moreover, since this magnetic flux interlinks with the armature coil on the stator side, an output voltage is induced in the armature coil, which can be extracted and used as a power generation output. In addition, such inductor type generators do not require a coil on the rotor side, and therefore do not require brushes or slip rings, making it possible to obtain high-frequency power with a simple structure. .

Furthermore, in such an inductor type generator, pole cores are provided on the stator at a pitch of 1/2 of the inductor magnetic poles, and field coils are wound around each of these pole cores, and the direction of the magnetic flux of these pole cores is When a current is passed through the field coil so that every two poles are reversed, and a common armature coil is wound across a pair of adjacent pole cores that are magnetized in different directions, the inductor magnetic pole Each time the armature coil rotates by an angle corresponding to the pitch of the pole core, the direction of the magnetic flux interlinking with the armature coil is completely reversed. Therefore, such an inductor-type generator can obtain much higher power generation output than a generator in which the strength of magnetic flux periodically increases and decreases!

Problems to be Solved by the Invention Furthermore, in order to increase the efficiency of such an inductor type generator, it is sufficient to use a high-performance magnetic material for forming the magnetic path. However, if laminated silicon steel plates are used in all parts, there is a drawback that the cost will be high. On the other hand, in an inductor type generator where the direction of magnetic flux is completely reversed as described above, the direction of magnetic flux is reversed between pole cores magnetized to the same pole of the yoke on the stator side, but it is mutually reversed. The direction of the magnetic flux passing through the yoke between the pole cores, which are magnetized to different poles, does not reverse;
It only increases or decreases. Therefore, it is understood that even if a high-performance silicon steel plate is used in a portion where the magnetic flux changes little, it will not be of much help in improving power generation efficiency.

〓Purpose of the invention〓 The present invention was made in view of the above problems, and aims to significantly improve efficiency by locally using high-performance laminated materials such as silicon steel plates. The object of the present invention is to provide an inductor type generator with a

<Means for Solving the Problems and Their Effect> The present invention provides an inductor type generator in which an inductor magnetic pole is provided on the rotor side, and an armature coil and a field coil are provided on the stator side. Pole cores are provided on the stator side with a pitch of 1/2 that of the inductor magnetic poles, and a field coil is wound around each of these pole cores, and the field coil is wound so that every second pole core has opposite polarity. A common armature coil is wound around a pair of adjacent pole cores which are excited by a coil and magnetized to mutually different polarities, and in which the armature coil and the field coil are wound. The stator yoke to which the stator is attached is made of a non-laminated material, and a laminated material made of a high-performance magnetic material is provided only on the yoke between the pole cores of the stator that are magnetized to the same polarity by the field coil. This invention relates to an inductor type generator characterized by This effectively increases the efficiency of the generator.

〓Example〓 The present invention will be described below with reference to an illustrated example.
In this embodiment, the inductor type generator according to the present invention is applied to an automobile retarder. That is, the first
As shown in the figure, a flywheel housing 2 is provided on the back side of an automobile engine 1.
A flywheel 4 fixed to a crankshaft 3 shown in FIG. 2 is housed within the housing 2. As shown in FIG. Furthermore, a transmission 5 is disposed on the back side of the flywheel housing 2, and the transmission 5 changes the rotation speed of the engine 1 to an appropriate rotation speed, and the transmission is connected to the driving wheels via a propeller shaft 6. is configured to communicate.

Next, the structure of the flywheel 4 housed in the flywheel housing 2 will be explained with reference to FIG. Inductor magnetic poles 7 are arranged at a predetermined pitch on the surface. Further, cases 8 are provided on the upper and lower sides of the flywheel housing 2, respectively, and a stator of the inductor type generator is housed in the cases 8.

The structure of the stator inside the case 8 will be explained with reference to FIG.
Pole core 9 is arranged at a pitch of 1/2.
The lower end of the pole core 9 faces the inductor magnetic pole 7 through a small air gap, and the upper end of the pole core 9 is fixed to the cover plate of the case 8 through a stator yoke 10. It is becoming more and more like this. An armature coil 11 and a field coil 12 are wound around the pole core 9, respectively. One field coil 12 is wound around each pole core 9, whereas the armature coil 11 is wound across two pole cores 9 that are in phosphor contact with each other. Furthermore, the field coil 12 magnetizes two pole cores 9 in opposite directions, and the armature coil 11 is wound across a pair of adjacent pole cores 9 that are magnetized in different directions. It is becoming more and more common.

Further, in the inductor type generator according to this embodiment, a laminated material 13 is attached between the pole cores 9 of the stator, which are magnetized to the same pole. This laminated material 13 is made of a silicon steel plate, and is fixed to the lower surface of the stator yoke 10. Note that the laminated material 13 is not provided between the pole cores 9 that are magnetized to different poles, so that a gap is formed.

Next, the operation of the retarder made of the inductor type generator having the above configuration will be explained. When a car equipped with this retarder is going down a long slope, a retarder switch installed, for example, in the driver's seat is turned on. As a result, current flows from the battery 15 to the field coil 12 shown in FIG. 3 via the controller 14 shown in FIG. 2. This coil 12 magnetizes two pole cores 9 of the stator so that they have different polarities. Therefore, at a certain moment, a magnetic circuit 16 as shown by the dotted line in FIG. 3 is formed, and a magnetic flux passes through this magnetic circuit 16. The direction of this magnetic flux is the direction shown by the arrow in the figure. Next, when the flywheel 4 rotates by an angle corresponding to the pitch of the pole core 9, a magnetic circuit 17 shown by a dotted line in FIG. 4 is formed, and magnetic flux passes through this magnetic circuit 17 in the direction shown by the arrow. become.

As is clear from a comparison between the magnetic circuit 16 shown in FIG. 3 and the magnetic circuit 17 shown in FIG. Moreover, the direction of the magnetic flux is reversed between FIG. 3 and FIG. 4. As described above, as the flywheel 4 rotates, the direction of the magnetic flux interlinking with the armature coil 11 is reversed, so that an electromotive force is induced in the armature coil 11.

The power generated by such an inductor type generator is consumed by the resistance in the resistance box 18 shown in FIG. 2, and the heat generated at this time is transferred to the water pipe 19. The resistance box 18 is cooled by water flowing through the resistance box 18. When the inductor type generator generates electricity, the crankshaft 3 must rotate the flywheel 4, and for this reason, the engine 1 or the vehicle performs work on the generator. Since the work is to provide braking force to the engine 1 or the vehicle, this generator functions as a retarder.

Furthermore, in the inductor type generator of this embodiment, as shown in FIGS. 3 and 4, a laminated material 13 is provided between the pole cores 9 magnetized to the same polarity, and the magnetic circuit 16 , 17 are partially formed of the laminated material 13. As is clear from a comparison between Figures 3 and 4, the pole cores 9 are magnetized to the same polarity.
In between, the direction of the magnetic flux is completely reversed, whereas between the pole cores 9 of different polarities, only the magnitude of the magnetic flux changes, but the direction is not reversed. Therefore, by providing the laminated material 13 between the pole cores 9 of the same polarity, which have a particularly large change in magnetic flux, it is possible to reduce the iron loss of the stator yoke 10, thereby increasing the efficiency of the generator. , it becomes possible to improve the braking force when used as a retarder. Furthermore, since the laminated material 13 is provided only between the pole cores 9 that are magnetized with the same polarity, the stator yoke 1
Compared to constructing the entire 0 using laminated materials, the cost is significantly lower!

Next, a modification of the above embodiment will be explained with reference to FIG. In this modification, parts corresponding to those in the above embodiment are given the same reference numerals, and descriptions of parts having the same configuration will be omitted. The feature of this modification is that the stator yoke 10 is
An inverted trapezoidal recess is formed at a position corresponding to between the pole cores 9 of the stator yoke 10 which are magnetized with the same polarity, and the laminated material 13 is fitted into this recess. This is how it was done. Therefore, in this modification as well, the stator yoke 10 is composed of the laminated material 13 in the portion where the magnetic flux is completely reversed, and thereby the efficiency of the generator can be improved with a small amount of the laminated material. or the braking force of the retarder.

Although the present invention has been described above with reference to an illustrated embodiment,
The present invention is not limited to the above embodiments, and various modifications can be made based on the technical idea of the present invention. For example, the above embodiment relates to an inductor type generator applied to a retarder, but the present invention can also be applied to an inductor type generator used for other purposes such as a high frequency generator.

〓Effects of the invention〓 As stated above, the present invention has the effect of reducing the inductor magnetic pole by 1/
Pole cores are provided on the stator side with two pitches, and a field coil is wound around each of these pole cores, and these pole cores are excited by the field coil so that the polarity is reversed every second, A stator yoke is provided, in which a common electronic machine coil is wound around a pair of adjacent pole cores that are magnetized to different polarities, and a pole core around which an armature coil and a field coil are wound is attached. The stator is constructed of non-laminated materials, and the laminated material made of high-performance magnetic material is provided only on the yoke between the pole cores of the stator, which are magnetized to the same polarity by the field coil.

Therefore, a laminated material made of high-performance magnetic material is provided only between the pole cores that are magnetized to the same polarity where the change in magnetic flux is particularly large, and this laminated material can reduce the iron loss of the stator yoke. This makes it possible to increase the efficiency of the generator and to improve the braking force when the generator is used as a retarder, for example. Furthermore, since the laminated material made of high-performance magnetic material is provided only between the pole cores that are magnetized to the same polarity, the cost is much lower than when the stator yoke is constructed entirely of laminated material.

[Brief explanation of drawings]

Fig. 1 is a side view of essential parts of an engine equipped with a retarder made of an inductor generator according to an embodiment of the present invention, Fig. 2 is an external perspective view of the retarder installed in this engine, and Fig. 3 is FIG. 4 is an enlarged vertical cross-sectional view of the retarder in the unfolded state; FIG. 4 is a vertical cross-sectional view similar to FIG. 3 when the flywheel rotates further; FIG. 5 is the same as FIG. 3 showing a modified retarder. FIG. The names of the main parts in the drawings are as follows. 4... Flywheel, 7... Inductor magnetic pole, 9
...Pole core, 10...Stator yoke, 11...
...Armature coil, 12...Field coil, 13...
Laminated wood.

Claims (1)

[Scope of Claim for Utility Model Registration] In an inductor type generator in which inductor magnetic poles are provided on the rotor side, and armature coils and field coils are provided on the stator side, 1/1 of the inductor magnetic poles are provided on the stator side. Pole cores are provided on the stator side with a pitch of 2, and a field coil is wound around each of these pole cores, and these pole cores are excited by the field coil so that the polarity is reversed every two pole cores. , a stator in which a common armature coil is wound around a pair of adjacent pole cores that are magnetized to different polarities, and the pole core around which the armature coil and the field coil are wound is attached. The yoke is made of a non-laminated material, and the yoke is provided with a laminated material made of a high-performance magnetic material only on the yoke between the pole cores of the stator that are magnetized to the same polarity by the field coil. Inductor type generator.