JPS60260140A - Chopper controller - Google Patents

Abstract

PURPOSE:To contrive to form a chopper controller in a small type by a method wherein a gate driving part equipped to a cooler is arranged in an airtight chamber provided penetrating a part of a box frame constructed in the condition accommodating the cooler. CONSTITUTION:A cooling system 10 has an airtight vessel 2 at the lower part of a cooler 3, and a gate driving part 4 positioning at the side thereof. The gate driving part 4 thereof has a cover 11, accommodated enabling to be inspected and detached from the car side in an airtight chamber constructed in the condition equipped with the cooling system 10 to a main frame, and integrated in one body with the cooling system 10. Accordingly, because the gate driving part 4 can be arranged close to the bushing 5 side of the airtight vessel 2 built in with a semiconductor containing a GTO thyristor, a gate wiring 11 can be shortened to the utmost, erroneous triggering of the GTO thyristor can be checked, and safety of action of the GTO thyristor can be secured also. Moreover, even when capacity of the cooler 3 is enlarged, a countermeasure of some extent can be devised by enlarging size in the sectional direction of the cooler 3 without changing size in the lengthwise direction and the sectional direction of a chopper controller.

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Application of the Invention] The present invention relates to a chopper control device composed of a GTO, and particularly to a chopper control device suitable for downsizing a cooling system and downsizing the device.

[Purpose of the invention]

The purpose of the present invention is to effectively utilize the mounting space of a chopper control device using GTCI, and to improve the equipment arrangement based on its characteristics.
Is it downsized considering handling etc.? The intended chopper control device is to provide gold.

[Summary of the invention]

In the chopper control device to which the GTOvf is applied, since the GTO itself has a self-extinguishing function, the storage equipment is different from a chopper control device having a commutation circuit r that does not have an off function such as a reverse conduction thyristor.

Furthermore, in order to use the GT (I) characteristic to the limit, there are restrictions on the equipment configuration such as the gate drive section and snubber circuit components, and it is necessary to reduce the size including handling.

In main circuit chopper control devices that control the main circuit current, a Freon cooling system is often adopted due to its maintenance benefits.

For this reason, the inventors investigated the structure of a chopper control device using a conventional reverse conduction thyristor, mainly the structure of the cooling system. By making the best use of it, it can also be adapted to chopper control equipment for GTO applications.
The entire equipment configuration was devised to enable miniaturization.

[Embodiments of the invention]

Hereinafter, one embodiment of the present invention will be explained with reference to FIGS. 1 and 2. FIG. 1 shows a cross-sectional view including the gate drive section 4 of the chopper control device. A closed container 2 containing the semiconductor and refrigerant contained in the GTO' is connected to a cooler 3 that radiates heat generated by the semiconductor through the refrigerant's vaporization-condensation cycle to form a cooling system (Fig. 3). reference).

The cooling system IO is pressed against a gasket provided on a partition plate between the vehicle side and the center side of the main frame 1, and is attached to the main frame 1 with two bolts each on the upper and lower sides.

In order to improve the cooling effect of the cooler 3, the vehicle side 1u+1 is designed as a west air chamber, and has a structure in which the cooler 3 protrudes toward the vehicle side in order to utilize the running wind.

Here, the cooling system IO has a closed container 2 below a cooler 3, and a gate drive section 4 located on the side surface of the closed container 2. The gate drive unit 4 is housed in a sealed chamber with a cover lxi and a cooling system 10 attached to the main frame l so that it can be inspected and removed from the vehicle side, and is integrated with the cooling system 10. There is.

That is, as shown in the back view of the chopper device in FIG. 4, the cooling system 10. Is there a notch in both l, - and main frame l? A gasket is provided on the main frame 1 so that the cooling system 10 is housed in the main frame 1 to form a sealed chamber. The same effect can be obtained even if this gasket is provided in the cooling system IO.

Since this chopper device is self-cooled, it is possible to ensure a large amount of noise in the closed room protruding from the lower part of the cooler 3 without impairing the effectiveness of the cooler 3.

Since the gate drive unit 4 generates less heat, does it affect the cooler 3? It has no effect.

Furthermore, if the gate drive power supply is integrated with the gate drive unit 4, there will be fewer wirings and more compactness can be expected, making maintenance easier. It also makes handling easier.

With this structure, the gate drive section 4 can be placed near the bushing 5 side of the sealed container 2 in which the semiconductor including the GTO is built, so the gate wiring 11 can be made as short as possible, and the GTO It also prevents erroneous firing, and G
The safety of TO operation can also be ensured.

Furthermore, even if the capacity of the cooler 3 becomes larger, it is possible to cope with increasing the cross-sectional dimensions of the cooler 3 to a certain extent without reducing the longitudinal and cross-sectional dimensions of the chopper control device. . If replaced, the main components will be the cooler 3, the sealed container 2, and the gate drive unit 4J:
When the cooling system JO is installed on the main frame, it does not cause any special thermal problems compared to the conventional method, and it can be made smaller as a chopper control device by making effective use of space. .

According to this embodiment, no new problems arise;
Since four gate drive units integrated with the cooling system 10 are installed at the bottom of the cooling system 10, the size of the cooler 3 can be adjusted only in the cross-sectional direction, and the space efficiency of the cooling system 10 can be improved. can be made smaller.

In addition, it is a device for controlling the four-gate GTO, and by integrating it, it can be expected that handling will become easier.

In addition, 6 in the figure is a snubber capacitor, an 8-wire wire holder, and a 9-wire control circuit cannon.

〔Effect of the invention〕

According to the present invention, changes in the capacity of the cooler can be dealt with only by changing the cross-sectional dimensions of the cooler, the space efficiency of the equipment configuration of the cooling system can be improved, the cooling system can be made more compact, and the size of the chopper device can be made smaller.

[Brief explanation of drawings]

FIG. 1 is a sectional view of a chopper control device according to the present invention, and FIG.
3 is a front view of the cooling system according to the present invention, FIG. 3 is a right side view of FIG. 2, and FIG. 4 is a back view of the chopper control device according to the present invention. 2...airtight container, 3...cooler, 4...game)
[Modobu, Agent Patent Attorney Akio Takahashi Kaya 10 4 Kaya 2 eyes/n

Claims (1)

[Claims] 1. 0TOt-containing semiconductor and refrigerant? The built-in airtight container and the heat generated from the semiconductor? A chopper control device comprising a cooling device connected to a condenser for dissipating heat in the vaporization/condensation cycle of the refrigerant, and a gate drive section, wherein the box frame is configured in which the cooling device is housed. A chopper control device characterized in that a gate drive unit attached to the cooling device is entirely disposed in a sealed chamber through which a part of the metal passes through.