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Control circuit of wide-voltage brushless motor

A brushless motor and control circuit technology, which is applied in the direction of electronic commutation motor control, excitation or armature current control, control system, etc., can solve the problems of poor versatility, low work efficiency, narrow application range, etc., and achieve guaranteed The effect of normal and stable work, improving work efficiency and widening the scope of use

Inactive Publication Date: 2015-04-01
SUZHOU HUAZHIJIE TELECOM
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] 1. The scope of use is narrow and the versatility is not good, resulting in products with different voltage levels needing to correspond to different control circuits
[0004] 2. The working efficiency is low, resulting in increased power consumption when overloaded, and the motor heats up, which further causes the performance of the motor to decline

Method used

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  • Control circuit of wide-voltage brushless motor
  • Control circuit of wide-voltage brushless motor

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Embodiment Construction

[0017] The specific implementation of the control circuit of a wide-voltage brushless motor according to the present invention will be described in detail below in conjunction with the accompanying drawings:

[0018] Such as figure 1 As shown, the control circuit of the wide-voltage brushless motor of the present invention includes: a microprocessor 101, a motor drive circuit 102, a power output circuit 103, a start-stop switch 107, an emergency switch 108, an undervoltage detection circuit 114 and a DC power supply, the power output circuit 103 is provided with a DC voltage by a power-driven regulated power supply 104, and the described DC power supply is a DC- The DC conversion circuit 105, the DC-DC conversion circuit 105 and the power drive stabilized voltage supply 104 have a common ground, and one end of the start-stop switch 107 and one end of the emergency switch 108 are respectively connected to the corresponding input ends of the microprocessor 101 to start The othe...

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PUM

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Abstract

The invention discloses a control circuit of a wide-voltage brushless motor. The control circuit is self-adapted to the working voltage of a power tube and can sense the voltage and the current of a power switch tube. The control circuit comprises a microprocessor, a motor-driving circuit, a power output circuit and a DC-DC (direct current) converting circuit, wherein the power output circuit comprises three power-driving groups, the DC-DC converting circuit is used for converting a stabilized-voltage power supply which is used for supplying DC voltage to the microprocessor and the power output circuit into the stabilized-voltage power supply which is respectively used for supplying DC working voltage to the microprocessor and the power output circuit, each power-driving group comprises an upper power switch tube and a lower power switch tube, the source electrodes or the emitting electrodes of all the lower power switch tubes are connected with the corresponding A / D (Analog to Digital)input ends of the microprocessor by a sampling amplifying circuit after the source electrodes or the emitting electrodes of all the lower power switch tubes are connected in parallel, the three output ends of the power output circuit, i.e. the connecting parts of the source electrodes or the emitting electrodes of the upper power switch tubes and the drain electrodes or the collecting electrode of the lower power switch tubes, are respectively connected through the corresponding A / D (Analog to Digital)input ends of the microprocessor by one sampling amplifying circuit. The control circuit is mainly used for driving the brushless motor.

Description

technical field [0001] The invention relates to a control circuit of a motor, in particular to a control circuit of a wide-voltage brushless motor. Background technique [0002] At present, brushless motors are usually used as power in electric tools, and the specific structure of the control circuit in the brushless motor controller includes: a microprocessor, a motor drive circuit, a power output circuit, and a microprocessor, a motor drive circuit and The power output circuits respectively provide DC power supplies of DC voltage, and all control input terminals of the motor drive circuit are respectively connected with the corresponding output terminals of the microprocessor; the power output circuits include three power drive groups, each power drive group Including the upper power MOS tube and the lower power MOS tube, the drains of all the upper power MOS tubes are connected in parallel, and connected to the corresponding voltage output end of the DC power supply, that...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H02P6/00
CPCH02P7/28
Inventor 于盛
Owner SUZHOU HUAZHIJIE TELECOM
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