Simple motor gear identification method and device based on potential transformation technology

A technology of voltage mutual inductance and identification method, which is applied to devices using electric/magnetic methods, motor control, AC motor control, etc., can solve problems such as troublesome maintenance of circuit boards, low degree of equipment integration, waste of construction materials, etc., and achieve effective Facilitate popularization, reduce application cost, and reduce construction difficulty

Inactive Publication Date: 2012-12-19
ZHENGZHOU CHUNQUAN ENERGY SAVING
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

But its shortcomings are: 1. The circuit is relatively complicated. Taking the three-speed motor as an example, the detection of each motor requires three detections, and high, medium and low voltage signals must be collected, so the maintenance of the circuit board is relatively troublesome. , the cost is high; 2. Inconvenient to use, the construction is more complicated, a single motor takes up to five acquisition lines, waste of construction materials, and the cost is high; 3. A single motor takes up hardware resources (I / O ports of the CPU, etc.) More, so the degree of integration of the device is low, and the number of motors that can be detected by a single device is small
If it is applied to the running state detection of a larger number of multi-speed motors, the above shortcomings are more obvious

Method used

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  • Simple motor gear identification method and device based on potential transformation technology
  • Simple motor gear identification method and device based on potential transformation technology
  • Simple motor gear identification method and device based on potential transformation technology

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Experimental program
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Effect test

Embodiment 1

[0033] Embodiment one: see figure 1 , the present invention is based on the simple motor gear recognition method of voltage mutual induction technology, for the common zero winding multi-tap motor, by measuring the voltage induction pulse of any gear, and then according to the size of the voltage induction pulse duty cycle, compared with the standard The duty cycle is compared to determine the gear of the motor:

[0034] Based on the correction value of the induction pulse duty ratio ±0~N of any gear of the mains or fan, the high-grade is marked as K1, the middle-range is marked as K2, the mains is marked as K3, and the low-range is marked as K4, where K4> K3>K2>K1, said N is a positive real number;

[0035] Measure the induction pulse duty ratio K of the low gear of the motor. When K≤K3, it is judged that the motor is running at a low gear; when K3

Embodiment 2

[0036] Embodiment two: see figure 2 , this embodiment is based on the simple motor gear identification method based on voltage mutual induction technology. The difference from Embodiment 1 is that the gear position of the motor is determined by measuring the duty cycle of the induction pulse of the gear position in the motor and comparing it with the standard duty cycle. :

[0037] Based on the correction value of the induction pulse duty ratio ±0~N of any gear of the mains or fan, the high-grade is marked as K1, the middle-range is marked as K2, the mains is marked as K3, and the low-range is marked as K4, where K4> K3>K2>K1, said N is a positive real number;

[0038]Measure the induction pulse duty ratio K of the middle gear of the motor. When K≤K2, it is judged that the motor is running at a low gear; when K2

Embodiment 3

[0039] Embodiment three: see image 3 , this embodiment is based on the simple motor gear identification method based on voltage mutual induction technology. The difference from Embodiment 1 is that the gear position of the motor is determined by measuring the duty cycle of the induction pulse of the gear position in the motor and comparing it with the standard duty cycle. :

[0040] Based on the correction value of the induction pulse duty ratio ±0~N of any gear of the mains or fan, the high-grade is marked as K1, the middle-range is marked as K2, the mains is marked as K3, and the low-range is marked as K4, where K4> K3>K2>K1, said N is a positive real number;

[0041] Measure the induction pulse duty cycle K of the high gear of the motor. When K≤K1, it is determined that the motor is running at a low gear; when K1

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Abstract

The invention relates to a motor gear identification method, in particular to a simple motor gear identification method and a device based on potential transformation technology. For a common-zero winding multi-tap motor, the voltage induction pulse of any gear of the multi-tap motor is measured, and then the pulse duty factor of the voltage induction pulse is compared with the standard pulse duty factor, so that the gear of the multi-tap motor is determined. The simple motor gear identification method and the device can be applicable to common-zero multi-gear winding motors and is used for detecting the operating state of a central air-conditioning three-gear fan coil. The motor gear identification method can be used for identifying the operating state of the motor rapidly and reliably, is easy to be implemented and is high in accuracy. Meanwhile, the gear identification is realized by utilizing the magnitude relationship of pulse duty factor of voltage induction pulses of different gears of a motor winding, only one group of gear connecting wires is adopted, the structure of the device is simplified, the cost is low, and the construction difficulty in application is reduced.

Description

technical field [0001] The invention relates to a method for identifying a gear position of a motor, in particular to a simple method and device for identifying a gear position of a motor based on voltage mutual inductance technology. Applied to zero multi-speed multi-winding motors, such as the detection of the running status of central air-conditioning three-speed fan coils. Background technique [0002] With the continuous advancement of social science and technology, the chemical, petroleum, electronics, and automobile industries have already realized the automatic control of the production process, making indelible contributions to the development of the national economy. However, for households and civil utilities, remote billing and meter reading systems for water, electricity, gas, and heating have not yet been popularized, and some have just started. With the reform and opening up of the society and the further development of the market economy, in order to realize...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H02P29/00H02P25/16H02P25/18G01P3/46
Inventor 陈传伟黄守峰陈玉军杨东李玉琴
Owner ZHENGZHOU CHUNQUAN ENERGY SAVING
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