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Brake circuit of brushless DC motor and brushless DC motor

A technology of brushing DC motor and braking circuit, applied in the direction of reduction gear of DC motor, electric motor/converter plug, etc., can solve the problems of motor permanent magnet demagnetization and driver damage.

Active Publication Date: 2018-08-24
CHIAPHUA COMPONENTS SHENZHEN
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The purpose of the embodiments of the present invention is to provide a brushless DC motor braking circuit and a brushless DC motor, aiming to solve the problems that the current motor braking circuit will cause damage to the driver and demagnetization of the permanent magnet of the motor

Method used

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  • Brake circuit of brushless DC motor and brushless DC motor
  • Brake circuit of brushless DC motor and brushless DC motor

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Embodiment Construction

[0027] In order to make the object, technical solution and advantages of the present invention clearer, the present invention will be further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described here are only used to explain the present invention, not to limit the present invention.

[0028] figure 1 The module structure of the brushless DC motor braking circuit provided by the embodiment of the present invention is shown, and for the convenience of description, only the parts related to the embodiment of the present invention are shown.

[0029] A brushless DC motor brake circuit, including a three-phase winding 1 of a brushless DC motor, the brushless DC motor brake circuit also includes:

[0030] A motor driver 2 respectively connected to the three-phase winding 1 of the brushless DC motor;

[0031] 3 switches respectively connected between the motor driver and the three-ph...

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Abstract

The invention belongs to the technical field of an electronic braking circuit and particularly relates to a brushless DC motor braking circuit and a brushless DC motor. In the embodiment of the invention, the brushless DC motor braking circuit comprises the three-phase winding of a brushless DC motor, a motor driver, a switch, a braking resistor R1, and a braking control unit. The motor driver and the braking control unit are completely separated. When the motor is braked, current does not flow through the motor driver, thus the damage to the motor driver and a motor magnet demagnetization problem are avoided.

Description

technical field [0001] The invention belongs to the technical field of electronic braking circuits, in particular to a braking circuit of a brushless DC motor and the brushless DC motor. Background technique [0002] In traditional commercial mixers, the motor usually uses an AC induction motor or a series motor, which has the problems of being unable to run forward / reversely and difficult to adjust the speed. Brushless DC motors can solve the problems of traditional motors very well. Moreover, the characteristics of high efficiency and long life of the brushless DC motor are also in line with today's concept of energy saving and environmental protection. [0003] Commercial mixers generally have knives. In an emergency, the motor needs to be braked quickly to prevent the knives from causing damage to the human body. Solving this problem is the key to the flexible application of brushless DC motors to mixers. [0004] Because brushless DC motors generally have the charact...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H02P3/12
CPCH02P3/12
Inventor 李延吉熊倩陈荣喜蒋立科
Owner CHIAPHUA COMPONENTS SHENZHEN