JPS58195219A - Poloidal power supply system of thyristor rectifying type - Google Patents

Abstract

PURPOSE:To suppress the variance of the reactive power to stabilize the output voltage of a generator, by combining a reactive power compensating device using an accumulated coil energy with a flywheel generator. CONSTITUTION:Though the phase of a thyristor rectifying device 5 is controlled for the purpose of flowing a magnetic field controlling current to a poloidal coil 6, the output voltage for a flywheel generator 1 is varied by the generation and the sudden change of the reactive power. For the purpose of covering this variance, the energy accumulated in a superconductive coil 10 is controlled by a self-exciting current inverter 8 and a separately excited converter 9, and a leading current is supplied by the inverter 8, and a lagging current is supplied by the converter 9. Therefore, the lagging reactive power generated from the rectifying device 5 is compensated, and the variance of the output voltage of the generator 1 is suppressed. Thus, the variance of the reactive power is suppressed to stabilize the output voltage of the generator.

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a thyristor-rectified voloidal power supply system for a nuclear fusion experimental facility, and particularly to a system for stabilizing the output voltage of a flywheel generator using a reactive power compensator.

A conventional device of this type is shown in FIG.

In the figure, 111 is a flywheel generator, (2) is a drive motor, (3) is an excitation device, (4) is a rectifier transformer, 151 is a thyristor conversion device, (61 is a boroidal coil, (7) breaker, (81 is a phase advance capacitor.

Next, the operation will be explained. In order to flow the magnetic field control current to the voloidal coil (6), the thyristor rectifier (51
However, the flywheel generator output voltage fluctuates due to the generation and sudden change of reactive power. To cover this, steady reactive power is □ Breaker (7)
and a phase advancing capacitor (81), and fluctuations in the output voltage of the flywheel generator are suppressed by controlling the excitation device (3).

Since the conventional voloidal power supply system is configured as described above, fluctuations in the output voltage of the flywheel generator due to fluctuations in reactive power are compensated for by the responsiveness of the excitation device, so the sealing of the excitation device is There were drawbacks such as increased voltage and capacity, and the capacity of the flywheel generator was determined by peak apparent power (reactive power), resulting in increased size.

This invention was made in order to eliminate the drawbacks of the conventional ones as described above, and suppresses fluctuations in reactive power by combining a reactive power compensator using stored coil energy with a flywheel generator. , the purpose is to provide a system that stabilizes the generator output voltage.

Hereinafter, embodiments of the present invention will be described with reference to the drawings.

In Figure 2, (1) is a flywheel generator, (2
1 is a drive electric motor, (3) is an excitation device, (4) is a rectifier transformer, (5) is a thyristor converter, (6) is a poloidal coil, (7) is a rectifier transformer, (81 is a self-excited type Current type inverter, (9) separately excited converter, Gl
is a superconducting coil.

Next, the operation will be explained. In order to flow the magnetic field control current to the voloidal coil (6), the thyristor rectifier (51
The flywheel generator output voltage will not fluctuate due to reactive power generation or sudden changes. To cover this, the energy stored in the superconducting coil aα is controlled by a self-excited current source inverter (8), a separately excited type, and a bark (9), and the self-excited current source inverter (8) advances the current. separately excited converter (9
) by supplying a lagging current, the leading current is controlled and supplied. This allows the thyristor rectifier (5)
It is possible to correct the delayed reactive power generated from the irradiation, and it is possible to suppress fluctuations in the output voltage of the flywheel generator il+.

In addition, in the above embodiment, an example of a combination of a separately excited thyristor converter and a self-excited current type inverter was described;
A similar effect can be achieved by a combination of a power factor improvement capacitor and a separately excited thyristor converter, or a combination of a power factor improvement capacitor and a cascade-connected separately excited thyristor converter.

As described above, according to the present invention, by combining a reactive power compensator using stored coil energy with a flywheel generator, the ceiling voltage, capacity, and apparent power of the excitation device of the flywheel generator can be reduced. This makes it possible to stabilize the generator output voltage.

[Brief explanation of the drawing]

FIG. 1 is a single line diagram showing a poloidal power supply system according to the present invention, and FIG. 2 is a single line diagram showing an embodiment of the present invention. In the figure, +11 is a flywheel generator, (2) is a drive motor, (:3) is an excitation device, (4) is a rectifier transformer, 15) is a thyristor conversion device, (6; is a voloidal coil, (7) is a rectifier transformer, (8) is a self-excited current type inverter, (91 is a separately excited converter, and αG is a superconducting coil. In addition, the same reference numerals in the figures indicate the same or equivalent parts. Makoto Kuzuno - Figure 1

Claims (1)

[Claims] In a voloidal power supply system using thyristor rectification for nuclear fusion experimental equipment, by combining a reactive power compensator using stored coil energy with a flywheel generator, fluctuations in reactive power during control of the thyristor rectifier can be suppressed. A voloidal power supply system using thyristor rectification, which is characterized by stabilizing the generator output voltage.