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Motor integrated protective device based on single-chip microcomputer technology and protective method of motor integrated protective device

A motor and single-chip technology, applied in the field of motors, can solve the problems of reliability and sensitivity that cannot meet technical requirements, and achieve the effects of meeting voltage acquisition requirements, saving costs, and being small in size

Inactive Publication Date: 2017-06-13
NANJING YUEBOO POWER SYST CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] This patent realizes the protection of the motor by using single-chip microcomputer technology, but it still cannot meet the current technical requirements in terms of reliability and sensitivity.

Method used

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  • Motor integrated protective device based on single-chip microcomputer technology and protective method of motor integrated protective device
  • Motor integrated protective device based on single-chip microcomputer technology and protective method of motor integrated protective device
  • Motor integrated protective device based on single-chip microcomputer technology and protective method of motor integrated protective device

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Embodiment 1

[0050] The integrated protector, such as figure 1 As shown, it includes single chip microcomputer 1, A / D conversion module 2, power supply module (not shown in the figure), current transformer 5, current signal conditioning module 4, transformer 6, voltage signal conditioning module 4, JTAG communication module 7, input unit 8, reset unit 9, relay 10, contactor 11 and display unit 12,

[0051]The current transformer 5 is used to collect the current signal of the motor 13 in real time, and the collected current signal is sent to the current signal conditioning module 3; the current signal conditioning module 3 passes the 2K precision sampling resistor to The AC current signal is converted into an AC voltage signal, and then converted into a suitable DC voltage signal through a precision rectification circuit and a filter circuit, and the DC voltage signal is sent to the A / D conversion module 2;

[0052] The transformer 6 is used to collect the voltage signal of the motor 13 in...

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Abstract

The invention belongs to the technical field of motors, and relates to a motor integrated protective device based on a single-chip microcomputer technology and a protective method of the motor integrated protective device. The protective device includes a single-chip microcomputer, an A / D conversion module, a power-supply module, a current transformer, a current signal adjusting module, a transformer, a voltage signal adjusting module, a JTAG communication module, an input unit, a reset unit, a relay, a contactor and a display unit. The protective method sets protection strategies of short circuits, overload, over voltage and under voltage. According to the protection strategies set by software, when deviation between an actual value and a set value exceeds a safe range, the single-chip microcomputer determines that a motor breaks down and controls the cutting off of a power supply of relay coils. The motor integrated protective device has the advantages of being small in size, low in cost, easy and convenient to install, higher in conversion accuracy of the A / D conversion module and good in reliability and meeting the requirements of friendly human-computer interface design.

Description

technical field [0001] The invention belongs to the technical field of motors, and relates to a comprehensive motor protector based on single-chip microcomputer technology and a protection method thereof. Background technique [0002] With the continuous improvement of China's automation level, the requirements for motor operation are also getting higher and higher. Traditional protection devices mostly use electronic circuits composed of discrete components or integrated circuits, and the sensitivity and reliability of protection devices are not very high. In order to meet the requirements of automatic production, it is urgent to develop and improve the control and protection devices of electric motors. Therefore, it is of great practical significance to develop a comprehensive motor protector with good reliability, high sensitivity, quick action, convenience and practicality. With the rapid development of electronic science and technology, it has become an inevitable tre...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H02H7/08
CPCH02H7/0822
Inventor 李占江高超任钢赵冲冲
Owner NANJING YUEBOO POWER SYST CO LTD
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