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Fan motor braking device and control method thereof

A technology of fan motor and brake device, which is applied in the direction of electric motor/converter plug, reduction device of AC motor, etc., can solve problems such as burnout, unstable state, and failure of fan motor to start smoothly.

Active Publication Date: 2018-01-30
DELTA ELECTRONICS INC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, due to the different settings and usage conditions of the servo machines in the server room, the fan motors that are not running are easily affected by the return air generated by the surrounding fan motors, resulting in an unstable state before starting operation, and even worse. It will cause the fan motor to reverse, so it will cause the fan motor to continue to reverse, unable to start smoothly or even burn out

Method used

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  • Fan motor braking device and control method thereof
  • Fan motor braking device and control method thereof
  • Fan motor braking device and control method thereof

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Embodiment Construction

[0053] Hereby, the technical content and detailed description of the present invention are described as follows in conjunction with the drawings:

[0054] See Figure 2A It is a schematic diagram of a circuit module in a preferred embodiment of the fan motor braking device of the present invention. The fan motor braking device provides braking protection before the fan motor 50 starts. The fan motor brake device includes a conversion circuit 10 , a brake enable circuit 20 , a brake release circuit 30 and a fan motor start circuit 40 . The conversion circuit 10 has a plurality of power switching elements and is electrically connected to the fan motor 50 .

[0055] Such as Figure 2A As shown, in this preferred embodiment, the fan motor 50 is a three-phase DC motor (three-phase DC motor), therefore, the corresponding conversion circuit 10 is three groups of bridge arm structures connected in parallel, and each The group of bridge arms is connected in series by two power swit...

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Abstract

The invention discloses a fan motor brake device to provide brake protection before a fan motor starts, including a conversion circuit, a brake enable circuit, a brake release circuit and a fan motor start circuit. The conversion circuit has a plurality of power switch elements and is electrically connected to the fan motor. The brake enable circuit is connected to the conversion circuit; the brake release circuit is connected to the brake enable circuit. The fan motor starting circuit receives an external DC voltage. When the braking enabling circuit receives the external DC voltage, the braking enabling circuit generates a braking control signal and turns on the power switching elements to brake the fan motor.

Description

technical field [0001] The invention relates to a fan motor brake device and its control method, in particular to a fan motor brake device with a brake protection function before starting the fan motor and its control method. Background technique [0002] See figure 1 figure 1 It is a schematic diagram of a circuit driven by a fan motor in the prior art. As shown in the figure, the fan motor drive circuit architecture includes a conversion circuit 10A, a drive controller 20A and a fan motor 50A. The conversion circuit 10A has a plurality of power switching elements Q1 - Q6 and is electrically connected to the fan motor 50A. Taking the fan motor 50A as a three-phase DC motor as an example, the conversion circuit 10A has three sets of bridge arms connected in parallel, and each set of bridge arms is connected in series by two power switching elements. The conversion circuit 10A receives an external DC voltage Vdc and converts it into the power required by the fan motor 50A...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H02P3/24
Inventor 曾伟硕吴家丰刘铭龙梁佑任
Owner DELTA ELECTRONICS INC
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