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Brushless direct current motor torque ripple suppression method based on boost topology

A brushed DC motor and torque ripple technology, applied in the field of motor drive control system, can solve the problems of reducing the service life of the motor, reducing the service life of the motor, damaging the motor bearings, etc., and achieving the effect of stable operation

Pending Publication Date: 2021-07-09
HARBIN UNIV OF SCI & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, due to the existence of inductive components in the winding, the brushless DC motor has the problem of large torque ripple. Larger torque ripple will affect the performance of the motor, generate vibration and noise, damage the motor bearing, and reduce the life of the motor.
[0003] For applications with high precision and high stability requirements, the torque ripple problem of brushless DC motors is particularly prominent. Electromagnetic torque is an important indicator to measure the performance of the motor system. Torque ripple will greatly reduce the service life of the motor. Affect system reliability

Method used

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  • Brushless direct current motor torque ripple suppression method based on boost topology
  • Brushless direct current motor torque ripple suppression method based on boost topology
  • Brushless direct current motor torque ripple suppression method based on boost topology

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Embodiment Construction

[0037] Embodiments of the present invention are described below through specific examples, and those skilled in the art can easily understand other advantages and effects of the present invention from the content disclosed in this specification. The present invention can also be implemented or applied through other different specific implementation modes, and various modifications or changes can be made to the details in this specification based on different viewpoints and applications without departing from the spirit of the present invention. It should be noted that, in the case of no conflict, the following embodiments and features in the embodiments can be combined with each other.

[0038] During the operation of the brushless DC motor, in order to improve the reliability of the brushless DC motor control system and not increase the volume of the entire control system, the boost topology is used to suppress the torque ripple;

[0039] A method for suppressing torque rippl...

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Abstract

The invention discloses a brushless direct current motor torque ripple suppression method based on boost topology, and belongs to the technical field of motor control systems. The brushless direct current motor control system solves the problem that an existing brushless direct current motor control system is large in commutation torque ripple. The boost topology with a simple structure is used for driving a brushless direct current motor, four switching vectors are constructed in combination with the output mode of the boost topology and the operation mode of the brushless direct current motor, and under the condition that normal work of the driving system is guaranteed, the invention further provides the brushless direct current motor current control method based on boost topology. In a commutation region and a non-commutation region of the brushless direct current motor, stable current control is realized by selecting a proper vector, so that commutation torque ripple of the brushless direct current motor is effectively suppressed, and the brushless direct current motor can operate more stably.

Description

technical field [0001] The technical field of the motor drive control system of the present invention, in particular, relates to a method for suppressing torque ripple of a brushless DC motor based on a boost topology. Background technique [0002] Brushless DC motors have been widely used due to their high power density, high efficiency, and simple control. However, due to the existence of inductive components in the winding, the brushless DC motor has the problem of large torque ripple. Large torque ripple will affect the performance of the motor, generate vibration and noise, damage the motor bearing, and reduce the life of the motor. [0003] For applications with high precision and high stability requirements, the torque ripple problem of brushless DC motors is particularly prominent. Electromagnetic torque is an important indicator to measure the performance of the motor system. Torque ripple will greatly reduce the service life of the motor. affect system reliability...

Claims

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Application Information

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IPC IPC(8): H02P6/10H02P21/05
CPCH02P6/10H02P21/05
Inventor 于德亮倪劲松王兆天
Owner HARBIN UNIV OF SCI & TECH
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