JPH02273062A - Single-pole generator - Google Patents

Abstract

PURPOSE:To minimize the loss of mechanical energy due to the mechanical friction of brushes and eliminate the abrasion of the brushes due to the friction by a method wherein arc plasma is utilized at least as an outside brush means and the arc plasma is rotated. CONSTITUTION:A load is connected to a generator, a coil 12 is conducted and the rotating disc 4 of an armature is rotated. Upon conducting the coil 12, arc plasma is generated between an electrode unit 4a around the rotary disc 4 of the armature and an annular electrode 10 by a trigger electric machine 9 whereby the flow of generator current is started. The current is conducted in the shape of a spot without spreading spatially due to the property of the arc, however, an electromagnetic force is generated in the arc plasma 8 by flux generated by the coil 12 whereby a rotary shaft 6 begins to rotate into the rotating direction of the same. Accordingly, the arc plasma 8 does not stay at one place and unifies the positional beat load of the electrode 10 and the like whereby the damage of the same may be mitigated.

Description

[Detailed Description of the Invention] [Industrial Application Field] This invention relates to a unipolar generator, and more specifically,
It relates to a unipolar generator with an armature rotating plate rotating in the magnetic flux of a coil.

[Prior art] Figure 3 shows the revised edition of "Superconductivity Engineering" published by the Institute of Electrical Engineers of Japan (1988).
8) The conventional unipolar generator (hereinafter referred to as the generator) published on page 234 is shown. This is a generator that uses a superconducting coil, and the superconducting coil ( 2) is stored, and the outer brush (3) is stored.
), the armature rotating plate (4) to which the inner brush (5) engages
) is fixed to the rotating shaft (6) and rotates in the magnetic flux,
Generate electricity. In this example, to increase the generated voltage,
Two armature rotating plates (4) are used.

(7) is an insulator.

Next, the operation will be explained. The superconducting coil (2) is energized to generate magnetic flux in the direction of the arrow (M) perpendicular to the surface of the armature rotating plate (4). Furthermore, when the armature rotating plate (4) is rotated so as to be mechanically rotatable, an induced electric field is generated between the central axis (6) and the end portion of the rotating plate (4). The induced voltage E at this time is given by the following formula.

E-UxBXL (vol. 10)... (1) Here, U is the average speed of the armature rotating plate (4), B is the magnetic flux density generated by the coil (2), and L is the armature speed. Effective length.

With the above, this oscillator generates direct current.

This power is extracted from the brushes (3) and (5).

[Problem to be solved by the invention 1 Since the conventional unipolar generator was configured as described above,
In particular, since the brushes (outside) are in contact with the armature rotating at high speed, the friction of the brushes reduces the rotational energy of the armature, and the brushes also wear out, shortening their lifespan. There was a drawback.

This invention was made to solve the above-mentioned problems, and aims to provide a monopolar generator that minimizes mechanical energy loss due to mechanical friction of the brushes and eliminates wear of the brushes due to friction. purpose.

[Means for Solving the Problems] The unipolar generator according to the present invention is such that at least the outer brush means is an arc plasma, and the arc plasma is rotated.

[Function] In the present invention, since the brush uses arc plasma and rotates the arc plasma, the electrode of the arc plasma is not thermally damaged.

[Embodiment] FIG. 1 shows an embodiment of the present invention, and in this example, a conventional inner brush (5) is used. This is because the speed of this part of the armature rotating plate (4) is slow.

In addition, there is only one armature rotating plate (4), and therefore,
It's good to have one brush on the inside and one on the outside. Magnetic flux (M) is generated by the coil (12), and the magnetic flux is passed through the armature rotating plate (4).
rotates.

(8) is an arc plasma used in place of a brush, and is generated between the electrode portion (4a) around the armature rotating plate (4) and the annular electrode (10). This aku plasma causes a generator current to flow. (9) is a trigger electrode for generating arc plasma (8), which applies high voltage at the start of energization, and plasma electrode (4a) (10
), the electrodes (4a) (1
0), an arc plasma (8) is generated and maintained. The arc plasma electrode (10) is fixed without rotating. Further, the surfaces of each of the electrodes (4a) (10) are made of arc-resistant material.

Next, the operation will be explained. A load is connected to this generator, the coil (12) is energized, and the armature rotating plate (
4) is rotating. When the electric trigger (9) generates an arc plasma (8) when the coil (12) is energized, a current begins to flow.

Due to the nature of the arc, this i−+
An electromagnetic force is generated in the arc plasma (8) by the current flowing in the Nispot shape or by the magnetic flux generated by the coil (12). It begins to rotate in the direction of rotation of the rotation axis (6). Therefore, the arc plasma (8) does not remain in one place, and the heat load on the electrode (lO) etc. is uniformized locally, thereby alleviating damage. This arc plasma (
8), the generator is energized.

In this embodiment, only the outer brush is made of an electrode system using arc plasma, but the inner brush may also be made of the same type.

Although not shown in Figure 1, arc plasma (
In order to facilitate and stabilize the generation of item 8), the arc plasma generating section may be evacuated.

Furthermore, as shown in FIG. 2 as another embodiment, in order to control the position of the arc plasma (8), a new coil (11) is used to direct the arc plasma (8) to the electrode (4a x 10 ) may be moved over the entire surface.

[Effects of the Invention] As described above, according to the present invention, since Aku-plasma is used for the brushes, loss of mechanical energy due to mechanical friction and wear and tear of the brushes are eliminated, and furthermore, this generator itself has a switch. As a result, it can be made at low cost and has a long lifespan.

[Brief explanation of drawings]

FIG. 1 is a schematic sectional view of a main part of one embodiment of the present invention, FIG. 2 is a schematic sectional view of a main part of another embodiment, and FIG. 3 is a sectional view of a conventional unipolar generator. (3)...outer brush, (4)...armature rotating plate, (
5) Inner brush (brush means), (6) Rotating shaft, (8) Arc plasma, (4a) (10)
...Brush electrode, (12)...Coil. In each figure, the same reference numerals indicate the same or corresponding parts.

Claims (1)

[Scope of Claims] An armature rotating plate that is fixed to a rotating shaft and rotates, and a coil that is arranged on the outer periphery of the armature rotating plate and generates magnetic flux in a direction perpendicular to the surface of the armature rotating plate. , a monopolar generator comprising inner and outer brush means engaging the armature rotary plate, wherein at least the outer brush means of the inner and outer brush means is an arc generator that moves around in the rotational direction of the rotating shaft. A monopolar generator characterized by being made of plasma.