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Brushless DC motor torque ripple suppression method based on current hysteresis control

A brushed DC motor, current hysteresis technology, applied in the direction of torque ripple control, current controller, etc., can solve problems such as restricting applications, achieve simple and feasible methods, suppress commutation torque ripple, improve dynamic performance and robustness sexual effect

Inactive Publication Date: 2017-11-03
TAIZHOU JINYU ELECTROMECHANICAL
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  • Abstract
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Problems solved by technology

But the torque ripple of BLDCM restricts its application in high-performance occasions

Method used

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  • Brushless DC motor torque ripple suppression method based on current hysteresis control
  • Brushless DC motor torque ripple suppression method based on current hysteresis control
  • Brushless DC motor torque ripple suppression method based on current hysteresis control

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Embodiment Construction

[0025] The principles and features of the present invention are described below in conjunction with the accompanying drawings, and the examples given are only used to explain the present invention, and are not intended to limit the scope of the present invention.

[0026] Such as Figure 4 As shown, a brushless DC motor torque ripple suppression method based on current hysteresis control, the specific implementation process is as follows:

[0027] Process 1: Determine the rotor position and speed calculation based on the Hall signal.

[0028] Process 2: The design of the outer ring of the speed and the setting of the inner ring of the regulator output.

[0029] Process 3: The current given amount output by the outer loop is compared with the current feedback amount of the inner loop, controlled by the current hysteresis loop, and combined with the rotor position signal, the corresponding power tube is controlled to be turned on and off.

[0030] Process 1 includes the follow...

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Abstract

The invention discloses a brushless DC motor torque ripple suppression method based on current hysteresis control. The method is characterized in that the non-commutation phase current in a commutation zone remains unchanged through the current hysteresis control, that is, a decrease rate of the swap-out phase current is ensured to be identical to an increase rate of the conducting phase current, so that commutation torque ripples are suppressed or eliminated. The method provided by the invention has the characteristics of high simplicity and practicality, high convenience in control, high dynamic response speed, and high system robustness.

Description

technical field [0001] The invention belongs to the technical field of motor control applications, in particular to a method for suppressing torque ripple of a brushless DC motor based on current hysteresis control. Background technique [0002] Brushless DC motor (Brushless DC motor, BLDCM) has been widely used in industry, aerospace and other fields due to its simple structure, good speed regulation performance and high power density. But the torque ripple of BLDCM restricts its application in high-performance occasions. In addition, torque ripple is also an important factor causing motor noise and vibration. The causes of torque ripple mainly include: cogging torque, non-ideal back electromotive force, and commutation torque. For a well-designed and manufactured BLDCM, commutation torque is the main component of torque ripple. [0003] In order to suppress the torque ripple of BLDCM, scholars at home and abroad have proposed many effective methods, mainly including: 1)...

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H02P6/10H02P6/28
CPCH02P6/10H02P6/28
Inventor 王加许王健张忠
Owner TAIZHOU JINYU ELECTROMECHANICAL
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