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Hall-free direct-current brushless motor controller and motor starting method

A brushless DC motor and controller technology, used in electronic commutators, torque ripple control, starting devices, etc., can solve problems such as reversal, jitter, and delay, and achieve slow and stable starting, increased service life, The effect of relative displacement reduction

Pending Publication Date: 2021-10-29
广东华芯微特集成电路有限公司
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

This kind of DC brushless motor will have a delay in starting, and it will reverse and shake

Method used

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  • Hall-free direct-current brushless motor controller and motor starting method
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  • Hall-free direct-current brushless motor controller and motor starting method

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Embodiment Construction

[0033] The present invention will be further described below in conjunction with drawings and embodiments.

[0034] see Figure 1-7 1. A Hallless DC brushless motor controller, comprising: an MCU control module, a pre-drive module, a drive module and a current sampling circuit; the output end of the MCU control module is connected to the input end of the pre-drive module, and the output end of the pre-drive module Connect the input end of the drive module, and the output end of the drive module is connected to the three-phase input end of the Hallless motor; the drive module includes a full-bridge circuit composed of three drive branches integrated with PMOS tubes + NMOS tubes; the full-bridge circuit The input terminal is connected to the output terminal of the pre-driver circuit; the output terminal of the full bridge circuit is connected to the three-phase input terminal of the Hallless motor, among which, one drive branch integrated with PMOS tube + NMOS tube is used to co...

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PUM

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Abstract

The invention discloses a Hall-free direct-current brushless motor controller and a motor starting method. The motor controller is characterized in that the output end of an MCU control module is connected with the input end of a pre-driving module, the output end of the pre-driving module is connected with the input end of a driving module, and the output end of the driving module is connected with the three-phase input end of a Hall-free motor; the driving module comprises a full-bridge circuit composed of three driving branches integrated with PMOS tubes and NMOS tubes, the input end of the full-bridge circuit is connected with the output end of the pre-driving circuit, and the output end of the full-bridge circuit is connected with the three-phase input end of the Hall-free motor; the input end of a current sampling circuit is connected with the output end of the full-bridge circuit, and the output end of the current sampling circuit is connected with the MCU control module. According to the invention, the Hall-free brushless direct current motor can be rapidly started, and the phenomena of reverse rotation and jitter can be avoided. There is no need for a Hall sensor to provide rotor position signals. The hall-free direct-current brushless motor controller and the motor starting method have the characteristics of long service life of the motor, better control effect, low maintenance cost and the like.

Description

technical field [0001] The invention relates to the technical field of motor control, in particular to a Hallless DC brushless motor controller and a motor starting method. Background technique [0002] Since Faraday discovered the phenomenon of electromagnetic induction in 1831, electric energy has entered people's lives. The Frenchman Pixie used the principle of electromagnetic induction to make the first electric motor. In 1866, the German inventor Siemens invented a practical DC generator. In 1870, the Belgian Graham invented the electric motor, and the emergence of generators and electric motors opened the curtain of the second industrial revolution, and electric motors penetrated into every corner of people's lives. [0003] Brushed DC motors have been widely used in the field of motion control due to their excellent torque characteristics. However, mechanical brushes are a fatal weakness of brushed DC motors. Mechanical commutation leads to poor commutation, and in se...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H02P6/20H02P6/18H02P6/10
CPCH02P6/20H02P6/18H02P6/10
Inventor 马鑫扬韩智毅
Owner 广东华芯微特集成电路有限公司
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