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Control method applied to closed-loop speed regulation of FFU (fan filter unit) alternating-current fan

A control method and technology of fan controller, applied in pump control, mechanical equipment, machine/engine, etc., can solve the problems of low system efficiency, high failure rate, low control accuracy of FFU AC fan, and achieve huge economic and social benefits , Solve the effect of low control accuracy

Inactive Publication Date: 2014-04-02
SUZHOU VOCATIONAL UNIV
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Problems solved by technology

[0003] The technical problem mainly solved by the present invention is to provide a control method for closed-loop speed regulation of FFU AC fans, which can solve the problems of low control accuracy, high failure rate, and low system efficiency of FFU AC fans in the prior art. With the continuous expansion of technology and FFU AC fan application scale, the present invention will bring huge economic and social benefits

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  • Control method applied to closed-loop speed regulation of FFU (fan filter unit) alternating-current fan
  • Control method applied to closed-loop speed regulation of FFU (fan filter unit) alternating-current fan

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Embodiment Construction

[0009] The preferred embodiments of the present invention will be described in detail below in conjunction with the accompanying drawings, so that the advantages and features of the invention can be more easily understood by those skilled in the art, so as to define the protection scope of the present invention more clearly.

[0010] see figure 1 and figure 2 , the embodiment of the present invention includes:

[0011] A control method for closed-loop speed regulation of an FFU AC fan, the method steps are: (1) The FFU AC fan controller reads the stored FFU AC fan operating parameter setting value, and the stored FFU AC fan Fan working parameter setting value includes FFU AC fan working schedule data and cleaning process requirement information; (2) The FFU AC fan controller reads the real-time data of the AC fan’s working voltage, current, temperature and speed, and output air volume (3) Compare the data information in steps (1) and (2), if the actual working parameters of...

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Abstract

The invention discloses a control method applied to closed-loop speed regulation of an FFU (fan filter unit) alternating-current fan. The control method includes (1), reading stored preset working parameter values of the FFU alternating-current fan by a controller of the FFU alternating-current fan; (2), reading and processing real-time data information of working voltage, current, temperature and rotating speed of the alternating fan by the controller of the FFU alternating-current fan; (3), comparing data information of the step (1) and the step (2), if difference between actual working parameters and preset working parameters of the FFU alternating-fan is within an allowable error range, keeping SPWM (sine pulse width modulation) speed regulation control signals unchanged, and if not, correspondingly regulating cycles and phase-shifting angle parameters of the SPWM control signals to regulate output rotating speeds of the FFU alternating-current fan and wind-speed output values of an FFU. By the control method, the problems such as low control accuracy, high failure rate, low system efficiency of the FFU alternating-current fan in the prior art can be solved.

Description

technical field [0001] The invention relates to the technical field of FFU fan control, in particular to a control method for closed-loop speed regulation of an FFU AC fan. Background technique [0002] FFU (Fan Filter Unit, fan filter unit) is a self-powered terminal air purification device composed of a fan and a filter, and has been widely used in dust-free clean rooms. At present, the AC fan control of most FFUs adopts multi-level step-by-step open-loop control, which has low control accuracy, low overall system efficiency, large power consumption, and poor control effect. With the rapid development of high-tech industries such as electronics and medicine, the requirements for the dust-free treatment process of the clean room are getting higher and higher. At the same time, higher requirements are also put forward for the energy saving and consumption reduction of the equipment. The existing FFU control technology, especially the speed regulation control method of the F...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F04D27/00
Inventor 汪义旺
Owner SUZHOU VOCATIONAL UNIV
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