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IGBT (insulated gate bipolar transistor) based drive circuit of control rod control system

A driving circuit and control system technology, applied in the control of nuclear reactions, nuclear power generation, reactors, etc., can solve the problems of large output current ripple, large equipment volume, slow rise and fall time of output current waveform, etc., to achieve rapid action , the effect of increasing the rate of ascent and descent

Active Publication Date: 2013-05-08
CHINA NUCLEAR POWER TECH RES INST CO LTD +1
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Problems solved by technology

The thyristor is a half-controlled component. When it is used as a component of a rectifier circuit, it uses a three-phase half-wave controllable rectification technology. A phase-shifting circuit is required to control the conduction angle of each phase to adjust the current. The control method more cumbersome
Moreover, this technology has the disadvantages of large output current ripple and large equipment volume
Moreover, there is no way to quickly release the self-induced electromotive force of the driving mechanism coil, resulting in a slow rise and fall time rate of the output current waveform

Method used

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  • IGBT (insulated gate bipolar transistor) based drive circuit of control rod control system
  • IGBT (insulated gate bipolar transistor) based drive circuit of control rod control system

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Embodiment Construction

[0030] The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only some, not all, embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without creative efforts fall within the protection scope of the present invention.

[0031] The invention is a driving circuit using a high-power insulated gate bipolar transistor IGBT as a driving device. The IGBT is a turn-off device that has developed rapidly in recent years. Compared with traditional thyristors and other devices, it has the characteristics of fast switching speed, simple control method, and low junction voltage, so it is widely used in the field of power electronics. The control of the output current can be realized by using p...

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Abstract

The embodiment of the invention discloses an IGBT (insulated gate bipolar transistor) based drive circuit of a control rod control system. The drive circuit comprises a three-phase half wave rectifier circuit, a first IGBT (chopped wave tube), a second IGBT (inversion tube) and a driving mechanism coil, wherein the collector of the first IGBT is connected with the positive output end of the three-phase half wave rectifier circuit; the emitter of the second IGBT is connected with the three-phase half wave rectifier circuit ground; the positive electrode of the driving mechanism coil is connected with the emitter of the first IGBT, and the negative electrode of the driving mechanism coil is connected with the collector of the second IGBT; and the gates of the first IGBT and second IGBT are connected with a pulse generating device. The embodiment of the invention has the following beneficial effects: the current regulation control circuit can be simplified; the reliability of the circuitcan be improved; the ascending and descending rates of the current can be improved; and the current ripple can be lower.

Description

technical field [0001] The invention relates to the field of nuclear reactor control, in particular to a control rod control system drive circuit based on an insulated gate bipolar transistor (Insulated Gate Bipolar Transistor, IGBT). Background technique [0002] In an existing pressurized water reactor nuclear power plant, the rapid adjustment of the power of the reactor is mainly realized by the control rod control system. The control rod control system includes several power cabinets and a control logic cabinet. Each power cabinet includes several power cabinets that can drive the coils of the driving mechanism. In general, judging the performance of the power cabinet is mainly to judge the current waveform parameters of the coil output to the driving mechanism. These parameters mainly include: the rate of current rise and fall, the ripple of the current, and the power factor of the power supply. [0003] In the existing PWR nuclear power plant control rod control sys...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G21C7/36G21C7/12
CPCY02E30/39Y02E30/30
Inventor 乔凤李腾龙许育周王春生李涛王利周琦
Owner CHINA NUCLEAR POWER TECH RES INST CO LTD
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