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Fan start state detection and start control method

A starting state and starting control technology, which is applied in motor generator control, electronic commutation motor control, control system, etc., can solve the problems of difficult starting, low reliability, inaccurate starting process detection, etc. performance, improve reliability, and achieve matching effects

Active Publication Date: 2016-04-27
GREE ELECTRIC APPLIANCES INC
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Problems solved by technology

[0004] The invention provides a start-up state detection and start-up control method of a fan to solve the problems in the prior art that the start-up of the fan with no position sensor is difficult, the reliability is not high, and the start-up process detection is inaccurate.

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Embodiment Construction

[0030]In order to better illustrate the intention of the present invention, the content of the present invention will be further described below in conjunction with the accompanying drawings.

[0031] This embodiment relates to a kind of start-up state detection and start-up control method of a blower fan. The blower fan includes a DC motor, which generally includes an MCU processor and has 3 IGBTs (insulated gate bipolar transistors). During the control, the DC motor start-up state detection is firstly carried out by means of dual-resistor sampling, which does not increase the external circuit detection and reduces the cost of the controller. Then, the DC motor start-up control is carried out according to the detection of the DC motor start-up state. Among them, refer to figure 1 , the detection of the starting state of the DC motor at first includes the following steps:

[0032] (1) Determine the current motion state of the DC motor, specifically to judge whether it is in a ...

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Abstract

The invention discloses a fan start state detection and start control method. A fan comprises a direct current motor; the direct current motor comprises an MCU processor and an IGBT. The method comprises: firstly, detecting the start state of the direct current motor, and then controlling the start of the direct current motor. According to the fan start state detection and start control method provided by the invention, the start reliability of the motor of the fan on various complex operation occasions is improved; the start universality of the fan is improved; and matching of different inertia fan loads is realized.

Description

technical field [0001] The invention relates to a state detection and start-up control method, in particular to a fan start-up state detection and start-up control method. Background technique [0002] The popularity of permanent magnet materials has brought great attention and development to the control system of permanent magnet synchronous DC motors. Coupled with the maturity of its control technology, the control system has good speed regulation performance, so in the field of industrial automation The application in is more and more extensive. At present, there are mainly two types of permanent magnet synchronous DC fans for air conditioners, one is a DC motor without a position sensor, and the other is a DC motor with a built-in position sensor. Among them, the DC motor without position sensor has been more and more widely used due to its simple assembly, wide application occasions, high reliability and low cost. The application of position sensorless DC fan is more ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H02P6/20H02P6/22H02P21/34
CPCH02P6/20H02P6/22
Inventor 孙家广郭伟林胡安永吴文贤李祖光曹明锋
Owner GREE ELECTRIC APPLIANCES INC
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