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Method for solving low work efficiency in high-speed rotation of high-power brushless motor

A technology of brushless motor and high working efficiency, which is applied in the direction of electronic commutator, etc., can solve the problems of low working efficiency of the motor, achieve the effect of simple and convenient implementation, solve the problem of excessive temperature rise, and improve the current waveform

Inactive Publication Date: 2016-08-24
北京奇峰聚能科技有限公司
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Problems solved by technology

[0004] Based on the above deficiencies, the present invention provides a method for solving the low working efficiency of the high-power brushless motor at high speed, which is used to solve the problem of the high-power brushless motor due to the low capture accuracy of the rotor position signal and the delay on the hardware transmission channel. The phenomenon of inaccurate motor commutation improves the working efficiency of the motor, improves the current waveform of the motor, and reduces the temperature rise of the motor

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  • Method for solving low work efficiency in high-speed rotation of high-power brushless motor
  • Method for solving low work efficiency in high-speed rotation of high-power brushless motor
  • Method for solving low work efficiency in high-speed rotation of high-power brushless motor

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Embodiment 1

[0022] like figure 1 , 2 As shown, a method of the present invention to solve the low working efficiency of the motor due to the Hall position deviation at high speed of the high-power brushless motor is as follows:

[0023] A method for solving the low working efficiency of a high-power brushless motor at high speed, including the step of capturing the speed of the brushless motor, the step of commutating the phase of the brushless motor, and the steps of turning on and off in advance, and measuring the motor speed through the step of capturing the speed of the brushless motor. The real-time speed can be used to obtain the amount of turn-on and turn-off in advance. The commutation step of the brushless motor realizes the commutation of the motor, and the step of turn-on and turn-off in advance realizes the turn-on and turn-off of the commutation drive signal in advance, so as to correct the error caused by the Hall installation. The commutation signal delay caused by the ina...

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Abstract

The invention discloses a method for solving low work efficiency in high-speed rotation of a high-power brushless motor. A phenomenon of inaccurate motor commutation caused by low rotor position signal acquisition accuracy and delay occurred on a hardware transmission channel is solved through a mode of acquiring the rotation speed of the motor in real time and modifying the switching time in real time, so that the work efficiency of the motor is improved, and problems such as too quick temperature rising of the motor are effectively solved. The method disclosed by the invention not only is flexible and variable, but also is simple and convenient in implementation. The more important point is that the method is also applicable to a DC brushless without a position sensor.

Description

technical field [0001] The invention relates to a method for solving the low working efficiency of a high-power brushless motor at high speed. Background technique [0002] At present, when the DC motor rotates at high speed, there will always be a delay in the motor commutation time. The higher the speed, the greater the delay. The accuracy of the Hall installation position is a direct factor leading to the problem, and signal transmission delay is also one of the factors. The deviation of the installation position of the Hall can only be solved by continuously improving the technical level, which requires relatively high technical personnel, and the installation accuracy of different technicians will not be the same. Once the Hall is installed, it is very inconvenient to correct the installation angle; and Signal transmission delays are more or less common in electronic circuits. For example, transmission signal delays caused by various first-order and second-order high-p...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H02P6/14
Inventor 蒋涛李晋孙金刚秦军红
Owner 北京奇峰聚能科技有限公司
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