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Short-fiber variable frequency motor anti-flash method

A variable frequency motor and short fiber technology, which is applied in the direction of AC motor control, electrical components, control systems, etc., can solve the problems of glue supply stop, short fiber breakage, parking, etc., and achieve less equipment investment, simple structure, and low investment cost Effect

Inactive Publication Date: 2015-09-02
YIBIN GRACE +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

In the case of continuous operation of staple fiber, it is easy to cause staple fiber breakage and glue supply to stop, which will cause production accidents to stop

Method used

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  • Short-fiber variable frequency motor anti-flash method

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Embodiment Construction

[0018] A short-fiber variable-frequency motor anti-flash method, characterized in that: the voltage of the short-fiber variable-frequency motor is collected by a voltage detection device, and the collected voltages are compared and judged to determine whether the collected voltage is normal or abnormal, and when the judgment result is normal When the frequency converter is controlled to perform normal inversion, the short-fiber variable-frequency motor runs; when the judgment result is abnormal, the internal energy storage device of the frequency converter is activated to provide electric energy for the short-fiber variable-frequency motor, and the short-fiber variable-frequency motor does not alarm and runs normally.

[0019] The normal voltage means that the instantaneous fluctuation time of the voltage is less than 10 seconds, and the abnormal voltage means that the instantaneous fluctuation time of the voltage is greater than or equal to 10 seconds.

[0020] The automatic r...

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Abstract

The invention relates to a short-fiber variable frequency motor anti-flash method. In the method, a voltage detection unit is used for acquiring voltage of a short-fiber variable frequency motor, the acquired voltage is compared to determine whether the acquired voltage is normal or not, if the determination result is normal, a frequency converter is controlled to perform normal inversion and the short-fiber variable frequency motor runs; and if the determination result is abnormal, an inner energy storing device of the frequency converter is started to provide electric energy for the short-fiber variable frequency motor, and the short-fiber variable frequency motor does not alarm and runs normally. According to the invention, since the whole short-fiber production equipment does not stop, the short-fiber equipment runs normally, and the defect of production accidental shutdown due to short-fiber breakage or glue supply stoppage will not occur.

Description

technical field [0001] The invention relates to a variable frequency motor used in the field of staple fiber manufacturing, and in particular to a method for controlling the motor to prevent the variable frequency motor from shutting down due to voltage fluctuations or lightning. Background technique [0002] Frequency converter is the application of frequency conversion technology and microelectronics technology, by changing motor Working power frequency way to control the power control equipment of AC motors. The inverter is mainly composed of rectification (AC to DC), filtering, inverter (DC to AC), braking unit, drive unit, detection unit and micro-processing unit. The frequency converter adjusts the voltage and frequency of the output power supply by switching off the internal IGBT, and provides the required power supply voltage according to the actual needs of the motor, thereby achieving the purpose of energy saving and speed regulation. In addition, the frequency ...

Claims

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Application Information

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IPC IPC(8): H02P23/00
Inventor 袁泓缪明李国全刘军曾从伟陈景毅
Owner YIBIN GRACE