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Booster chopping technology-based variable-frequency voltage stabilizing control system and method

A technology of voltage regulation control and control method, which is applied in the direction of AC network voltage adjustment, reduction gear of AC motor, electric motor/converter plug, etc., can solve the problems of many uncertain factors, high purchase cost, serious nonlinearity, etc. To achieve the effect of simplifying the control link, considerable benefits, and good anti-interference ability

Active Publication Date: 2012-02-15
STATE GRID LIAONING ELECTRIC POWER RES INST +3
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Problems solved by technology

The purpose is to solve the previous problems of relatively high purchase cost, poor reliability, many uncertain factors, serious nonlinearity, and large errors.

Method used

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  • Booster chopping technology-based variable-frequency voltage stabilizing control system and method
  • Booster chopping technology-based variable-frequency voltage stabilizing control system and method
  • Booster chopping technology-based variable-frequency voltage stabilizing control system and method

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Embodiment Construction

[0030] The present invention will be further described below in conjunction with the accompanying drawings and specific embodiments.

[0031] A frequency conversion and voltage stabilization control system based on boost chopper technology, which includes a PLC programmable controller 1:

[0032] The system mainly includes host computer, PLC programmable controller 1, frequency conversion system 2, CC-LINK field bus 6, governor 10 and boost voltage-frequency control conversion circuit;

[0033] The PLC programmable controller 1 is connected to the frequency conversion system 2 through the CC-LINK field bus 6; the signal input terminals of the PLC programmable controller 1 are respectively connected to the energy storage signal, energy release signal, and alarm signal, and then The data is calculated and processed; the system stabilized voltage output is realized by the V / F conversion circuit 24.

[0034] The control method of the frequency conversion and voltage stabilization...

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Abstract

The invention relates to a voltage stabilizing system, in particular to a boost chopping technology-based variable-frequency voltage stabilizing control system and a method, which belong to the electric automation field. The booster chopping technology-based variable-frequency voltage stabilizing control system mainly comprises a host computer, a program logic controller (PLC) 1, a variable-frequency system 2, a CC-LINK on-site bus 6, a remote monitor 5, a speed regulator 10 and a boost voltage frequency control conversion circuit; the PLC 1 is connected with the variable-frequency system 2 in a communication way through the CC-LINK on-site bus 6; the signal input end of the PLC 1 is respectively connected with an energy storage signal, an energy release signal and an alarming signal, and then the PLC 1 operates and processes the inputted data through a central processing unit CPU 13; and the output of the stabilized voltage of the system can be realized through a voltage / frequency (V / F) conversion circuit 24. The voltage stabilizing control system has good filter performance, a good energy-saving effect, good static performance and good dynamic performance, realizes the real-time monitoring, and improves the transmission accuracy and reliability of the control signal.

Description

technical field [0001] The invention relates to a voltage stabilizing system and a control method thereof, belonging to the field of electric automation, in particular to a frequency conversion stabilizing control system and method based on boost chopper technology. Background technique [0002] Due to the unstable air volume of the wind turbine, its output is a changing alternating current, which needs to be converted into an alternating current 220V mains power to ensure stable use. At present, in terms of frequency conversion and voltage stabilization control systems at home and abroad, the control method is based on the linearization model to realize the tracking of the optimal tip speed ratio, and the wind speed measurement value is used for feedback control, or electric power feedback control. However, in wind power systems with large random disturbances, many uncertain factors, and severe nonlinearity, traditional control methods will produce large errors. In terms o...

Claims

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Application Information

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IPC IPC(8): H02J3/12H02J3/38H02P3/22
Inventor 宋进良孙长河王舟宁
Owner STATE GRID LIAONING ELECTRIC POWER RES INST
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