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Initial position detection method of direct current brushless motor

A brushless DC motor and initial position detection technology, which is applied in the direction of controlling generators, motor generators, electromechanical transmissions, etc., can solve problems such as the inability to detect the initial position of DC brushless motors, and achieve the purpose of avoiding the difficulty of position detection, Clarity-enhancing effect

Active Publication Date: 2021-05-28
中电海康无锡科技有限公司
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0008] The present invention provides a method for detecting the initial position of the brushless DC motor, which solves the problem in the related art that the initial position of the brushless DC motor cannot be detected question

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  • Initial position detection method of direct current brushless motor
  • Initial position detection method of direct current brushless motor
  • Initial position detection method of direct current brushless motor

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Embodiment Construction

[0035] It should be noted that, in the case of no conflict, the embodiments of the present invention and the features in the embodiments can be combined with each other. The present invention will be described in detail below with reference to the accompanying drawings and examples.

[0036] In order to enable those skilled in the art to better understand the solutions of the present invention, the following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only Embodiments of some, but not all, embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts shall fall within the protection scope of the present invention.

[0037] It should be noted that the terms "f...

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Abstract

The invention relates to the technical field of motor control, and particularly discloses an initial position detection method of a direct current brushless motor. The method comprises the following steps: initializing a direct current brushless motor; collecting a plurality of batches of suspension phase voltage values of the direct current brushless motor; comparing the sizes of the suspension phase voltage values of the plurality of batches, and obtaining a comparison result; and according to the winding structure of the direct current brushless motor and the comparison result, judging a sector where the initial position of the rotor of the direct current brushless motor is located, wherein the winding structure of the direct current brushless motor comprises a stator winding which is in delta connection. The method for detecting the initial position of the direct-current brushless motor provided by the invention can be used for detecting the initial position of the motor rotor.

Description

technical field [0001] The invention relates to the technical field of motor control, in particular to an initial position detection method of a DC brushless motor. Background technique [0002] With the rapid development of permanent magnet materials, power electronics technology, sensor technology, modern control theory and microprocessor technology, brushless DC motors have the advantages of high efficiency, long life, low noise and good speed-torque characteristics. It has a wide range of applications in industries such as automobiles, aviation, and household appliances. DC brushless motor is the direction of motor development at present, and it is the most ideal performance and the fastest growing speed regulating motor. [0003] Brushless DC motors are divided into two categories: sensory and non-inductive according to whether they are equipped with Hall sensors. Among them, the sensed DC brushless motor can know the current sector of the rotor according to the outpu...

Claims

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Application Information

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IPC IPC(8): H02P21/14H02P21/18H02P21/22H02P6/08H02P6/16
CPCH02P21/14H02P21/18H02P21/22H02P6/08H02P6/16
Inventor 阮韵霖
Owner 中电海康无锡科技有限公司
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