Protection control method of fan controller

Abstract

The invention discloses a protection control method of a fan controller. The protection control method comprises an output power control protection mode and / or a temperature control protection mode. The output power control protection mode comprises the steps of comparing a controller output power actual value obtained by reading, monitoring and calculating based on the controller with a preset maximum allowable output power value of the controller in real time, and controlling the output current of the controller according to a comparison condition; the temperature control protection mode comprises the steps of comparing a motor winding temperature actual value calculated based on a resistance method with a preset motor winding maximum allowable temperature value in real time, and controlling the output current of the controller according to a comparison condition; .The invention provides an intelligently controlled output power control protection mode and a temperature control protection mode to solve the problems of fan motor overapplication and fan motor overheat operation, the control accuracy is high, and the control steps are simple and reliable.

Description

technical field [0001] The invention belongs to the field of controllers, and in particular relates to a protection and control method for a fan controller. Background technique [0002] The main working principle of the fan is to use mechanical energy to increase the gas pressure and discharge the gas. Specifically, it can include a ventilator or a blower, which is widely used in various industries. The fan controller is mainly used to realize the drive control of the fan motor, and its structure mainly includes a frequency converter and various drive circuits composed of electronic components. However, the existing fan controllers have many deficiencies in terms of installation structure, self-protection control, waterproof performance, communication control mode, and flexible speed regulation to meet different application scenarios. [0003] Therefore, the applicant, based on his dedicated research and development experience in the field of controllers during the Chinese...

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Problems solved by technology

[0004] In view of this, the object of the present invention is to provide a protection control method for a fan controller, and propose an intelligently controlled output power control protection mode and a temperature control protection mode to solve the problems of fan motor over-application and fan motor overheating. High accuracy and simple and reliable control steps

[0006] Aiming at the problem of over-application of fan motor or overheating operation of fan motor in the application of fans in the prior art, and some improvement schemes for avoiding over-application of fan motor or overheating operation of fan motor usually use hardware circuits for protection, lack of intelligence Protection control scheme, therefore, this application further proposes a preferred protection control method for the fan controller, the protection control method includes the output power control protection mode used to prevent the fan motor from being over-applied and / or used to prevent the fan motor from The temperature control protection mode of overheating operation, wherein the output power control protection mode includes comparing the actual value of the controller output power calculated based on the controller reading and monitoring with the preset maximum allowable output power value of the controller in real time, according to Control the output current of the controller by comparing the situation to ensure that the actual value of the output power of the controller does not exceed the preset maximum allowable output power value; the temperature control protection mode includes the actual value of the motor winding temperature calculated based on the resistance method and the preset The maximum allowable temperature value of the motor winding is compared in real time, and the output current of the controller is controlled according to the comparison to ensure that the actual temperature value does not exceed the preset maximum allowable temperature value

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