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Method for controlling an electric ventilator

A technology of a ventilator and a microcontroller, applied in the field of electric motors, can solve the problems such as the reduction of the rotation speed of the electric ventilator

Inactive Publication Date: 2017-05-24
SPAL AUTOMOTIVE
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0015] The main disadvantage of this method of control and protection is that under certain conditions the rotation speed of the electric ventilator may be extremely reduced, putting the entire vehicle in which the electric ventilator is installed at risk, in which case the overheating is caused by After a relatively short transient event caused by

Method used

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  • Method for controlling an electric ventilator
  • Method for controlling an electric ventilator
  • Method for controlling an electric ventilator

Examples

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Embodiment Construction

[0024] reference figure 2 , The number 100 represents a block diagram about a method for controlling an electric ventilator that is basically known and not shown.

[0025] The electric ventilator preferably controlled according to this method very briefly includes an electric motor, a fan driven by the electric motor, and a card for driving and controlling the electric motor.

[0026] The electronic card is preferably accommodated inside the motor, which in turn is preferably of the sealed type.

[0027] The electronic card includes a microcontroller or driver and an electronic power device for controlling and supplying power to the motor. The electronic power device includes, for example and preferably, MOSFETs, for which explicit reference will be made.

[0028] The electronic card gives the motor a rotational speed V.

[0029] The microcontroller has a relative temperature T D , MOSFET has a relative temperature T M .

[0030] The method for controlling an electric ventilator accordi...

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Abstract

A method for controlling an electric ventilator comprising comprising the steps of: setting a first value V1 of the speed V of rotation of an electric motor; setting a maximum threshold temperature T3<M> of electronic power means; setting a maximum threshold temperature T3<D> of a microcontroller; setting a first threshold temperature Tl<D> of the microcontroller lower than T3<D>; monitoring the temperature To of the microcontroller; monitoring the temperature T<M> of the electronic power means; setting a first threshold temperature T1<M> of the electronic power means lower than T3<M>; preparing a counter of a predetermined time<X>; activating the counter if the temperature To or T<M> exceeds the respective first threshold temperature T1<0>, T1<M>; reducing the speed V of rotation of the electric motor to a second value V1 lower V1 if after the predetermined time<X>, the temperature To or the temperature T<M> is higher than the respective first threshold temperature T1<0>, T1<M>.

Description

Technical field [0001] The invention relates to a method for controlling an electric ventilator, and more particularly to a method for controlling an electric motor of an electric ventilator in automotive applications. Background technique [0002] Electric ventilators are widely used in the automotive field and have the function of cooling and removing heat from the radiant block. [0003] An electric ventilator includes, in short, an electric motor, a fan driven by the electric motor, and electronic equipment for controlling the electric motor. [0004] The salient feature of control electronics is also the possibility of protecting motors and electronics from overheating or overheating, for example, especially as determined by exceptionally severe operating conditions (such as high ambient temperature or sudden adverse conditions). [0005] More specifically, an electric ventilator that overheats needs to be handled with care: the electric ventilator includes a closed and / or sealed...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F04D25/08F04D27/00H02H7/085H02P29/60
CPCF04D25/08F04D27/008H02H5/04H02H7/0852H02P29/60
Inventor 彼得罗·德菲利皮斯
Owner SPAL AUTOMOTIVE