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Thyristor rectifier bridge parallel operation full digital current homogenizing control device

A fully digital, rectifier bridge technology, applied in the output power conversion device, the conversion of AC power input to DC power output, electrical components and other directions, to achieve the effect of large current sharing coefficient, easy fault diagnosis, and convenient parameter adjustment

Active Publication Date: 2012-05-02
DONGFANG ELECTRIC MACHINERY +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0003] In order to overcome the defects of the above existing control devices, the present invention aims to provide a fully digital intelligent current sharing control device for parallel operation of thyristor rectifier bridges that is suitable for use in the field where current sharing is required when rectifier cabinets are running in parallel in the excitation system

Method used

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  • Thyristor rectifier bridge parallel operation full digital current homogenizing control device
  • Thyristor rectifier bridge parallel operation full digital current homogenizing control device
  • Thyristor rectifier bridge parallel operation full digital current homogenizing control device

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Embodiment 1

[0023]Thyristor rectifier bridges operate in parallel with a fully digital intelligent current sharing control device, including a regulator 1, a rectifier cabinet controller 2, a thyristor rectifier bridge 3 and a detection device 4. The regulator 1 is the main controller, and the machine-side signal processing module 5 , a synchronous signal processing module 6 and a regulator controller 7; the rectifier cabinet controller 2 is a slave controller, which is composed of a rectifier cabinet controller control module 8, a rectifier cabinet controller analog-to-digital conversion module 9, and a rectifier cabinet controller pulse Forming module 10, rectifier cabinet controller switching value input and output module 11 and rectifier bridge display controller 12; thyristor rectifier bridge 3 is composed of thyristor fully controlled rectifier bridge 13, pulse amplification module 14, pulse transformer isolation trigger module 15 and centralized reverse The blocking peak absorption ...

Embodiment 2

[0027] Thyristor rectifier bridges operate in parallel with a fully digital intelligent current sharing control device, including a regulator 1, a rectifier cabinet controller 2, a thyristor rectifier bridge 3 and a detection device 4. The regulator 1 is the main controller, and the machine-side signal processing module 5 , a synchronous signal processing module 6 and a regulator controller 7; the rectifier cabinet controller 2 is a slave controller, which is composed of a rectifier cabinet controller control module 8, a rectifier cabinet controller analog-to-digital conversion module 9, and a rectifier cabinet controller pulse Forming module 10, rectifier cabinet controller switching value input and output module 11 and rectifier bridge display controller 12; thyristor rectifier bridge 3 is composed of thyristor fully controlled rectifier bridge 13, pulse amplification module 14, pulse transformer isolation trigger module 15 and centralized reverse The blocking peak absorption...

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Abstract

The invention discloses a thyristor rectifier bridge parallel operation full digital current homogenizing control device, which comprises a regulator, a rectifier cabinet controller, thyristor rectifier bridges and a detection component. The regulator is a master controller; the rectifier cabinet controller is a slave controller; a terminal signal processing module regulates terminal voltage and current signals of a generator, so that the terminal voltage and current signals are suitable to be output to an analog-to-digital conversion module of a regulator controller; and a synchronization signal processing module regulates the anode voltage of the rectifier cabinet thyristor rectifier bridges, so the anode voltage is suitable to be output to a pulse formation module of the regulator controller to serve as a synchronization signal of the anode voltage of the thyristor rectifier bridges. Due to the adoption of digital closed loop control, full digital intelligent current homogenizationfor a plurality of parallel operation thyristor rectifier bridges under full-motion environment is realized by real-time sampling and control.

Description

technical field [0001] The invention relates to the field of motor excitation control, and mainly relates to an all-digital intelligent current sharing control device for parallel operation of thyristor rectifier bridges. Background technique [0002] Excitation device generally consists of excitation regulator cabinet, excitation rectifier cabinet, de-excitation and overvoltage protection cabinet. Each excitation rectifier cabinet contains an independent thyristor rectifier bridge, and the excitation device of a large-scale unit generally consists of multiple excitation rectifier cabinets (thyristor rectifier bridges) running in parallel at the same time. Thyristor rectifier bridges running in parallel will cause large differences in the output current of thyristor rectifier bridges due to the discreteness of the parameters of each thyristor, different wiring lengths, and different contact resistances, which makes the load of thyristor rectifier bridges running in parallel ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H02M7/155
Inventor 汪大卫
Owner DONGFANG ELECTRIC MACHINERY
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