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High-power brushless motor driving circuit and control method therefor

A drive circuit, brushless motor technology, applied in the direction of motor generator testing, electronic commutator, starting device, etc., can solve the problem that the circuit of the drive device cannot be modified, unfavorable product upgrades, and high prices. Operation stability and reliability, improve service life, and facilitate the effect of upgrading

Active Publication Date: 2016-02-10
ZHEJIANG OCEAN UNIV
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  • Abstract
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Problems solved by technology

[0005] The purpose of the present invention is to provide a high-power brushless motor drive circuit and its Control Method

Method used

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  • High-power brushless motor driving circuit and control method therefor
  • High-power brushless motor driving circuit and control method therefor
  • High-power brushless motor driving circuit and control method therefor

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Embodiment Construction

[0049] The present invention will be further described below in conjunction with the accompanying drawings and specific embodiments.

[0050] like figure 1 , figure 2 The illustrated embodiment is a high-power brushless motor drive circuit, including a single-chip microcomputer 1, two buttons 2, an alarm 8, a memory 9, a display 10, a three-phase circuit 3 connected to a motor 11, and a three-phase circuit circuit. Connected current detection circuit 4 and 3 drive circuits 7, 3 position detection circuits 6 respectively connected to 3 Hall sensors 5 with 120 degree intervals on the motor rotor; single chip microcomputer, 3 drive circuits, The three-phase circuit and the motor are electrically connected in turn, the output terminals of the three position detection circuits and the input terminals of the working voltage are all electrically connected to the single-chip electromechanical device; the signal input terminal of the current detection circuit is electrically connecte...

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Abstract

The invention discloses a high-power brushless motor driving circuit and a control method therefor. The high-power brushless motor driving circuit comprises a single chip microcomputer, two keys, an alarm apparatus, a storage, a display, a three-phase circuit connected with the motor, a current detection circuit and three driving circuits electrically connected with the three-phase circuit, and three position detection circuits connected with three Hall sensors arranged on the motor rotor respectively, wherein the three Hall sensors are spaced at the angle of 120 degrees in sequence; and the single chip microcomputer, the three driving circuits, the three-phase circuit and the motor are electrically connected in sequence. The high-power brushless motor driving circuit has the characteristics that the motor can be rapidly and stably started, the motor running faults can be automatically detected and judged, and the faults without hardware-damage can be automatically restored; and when the faults cannot be restored, the machine halt is performed and an operator is informed of the fault information in time.

Description

technical field [0001] The invention relates to the technical field of brushless motor control, in particular to a high-power brushless motor drive circuit and a control method thereof which are easy to upgrade and inexpensive. Background technique [0002] With the "small, light and thin" audio-visual products, the quietness of home appliances and the increasing demand for luxury cars, the demand for brushless DC motors has increased rapidly. Brushless DC motors replace brushes and commutators with electronic commutation, and have the advantages of high reliability, high efficiency, long life, and convenient speed regulation. [0003] At present, the driving device of brushless motor is usually implemented by pure hardware circuit. For example, the driving device uses dsp chip, the circuit cannot be modified, and the dsp chip is expensive, which is suitable for high-end products and is not conducive to product upgrading. [0004] Chinese patent authorization publication nu...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H02P6/20H02P6/16G01R31/34
Inventor 张华田兴元
Owner ZHEJIANG OCEAN UNIV
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