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Motor stall monitoring device, motor protection system and method thereof

A monitoring device, a technology for motor stall, applied in measurement devices, motor generator testing, emergency protection circuit devices, etc., can solve the problems of increased system cost, inability to use sensors, etc., to achieve low cost, fast calculation speed, and timely response Effect

Active Publication Date: 2022-02-25
HANGZHOU SILAN MICROELECTRONICS
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the use of sensor equipment will lead to an increase in system cost
At the same time, in many motor applications, sensors cannot be used, which also brings great challenges to stall detection and protection.

Method used

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  • Motor stall monitoring device, motor protection system and method thereof
  • Motor stall monitoring device, motor protection system and method thereof
  • Motor stall monitoring device, motor protection system and method thereof

Examples

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Embodiment Construction

[0057] Various embodiments of the invention will be described in more detail below with reference to the accompanying drawings. In the various drawings, the same elements are denoted by the same or similar reference numerals. For the sake of clarity, various parts in the drawings have not been drawn to scale.

[0058] The specific implementation manners of the present invention will be further described in detail below in conjunction with the accompanying drawings and embodiments.

[0059] figure 1 A schematic diagram of a motor stall monitoring device according to an embodiment of the present invention is shown.

[0060] Such as figure 1 As shown, the motor stall monitoring device 100 is connected to the motor 200 for detecting whether the motor 200 is stalled, and taking protective measures for the motor 200 .

[0061] The motor stall monitoring device 100 includes a processing module 110 , a control module 130 and a judging module 140 .

[0062] The processing module 1...

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Abstract

Disclosed are a motor stall monitoring device, a motor protection system and a method thereof. The motor stall monitoring device includes a processing module, which obtains a feedback current, estimates a rotational speed, and an estimated angle according to a phase current of a motor; 1. Estimate the speed and feedback current to provide the phase control voltage; the judgment module judges whether the motor is blocked according to the calculated quadrature axis voltage error value of the phase control voltage component on the quadrature axis and / or the direct axis voltage error value of the direct axis component to provide a stall warning signal. In this application, the estimated rotational speed and estimated angle of the motor are estimated through the processing module without using a position or rotational speed sensor. In addition, the direct-axis judgment method and / or the quadrature-axis judgment method can be used to determine whether the motor is stalled, which can be directly applied to various sensorless permanent magnet synchronous motor control systems to effectively detect the motor stall state to achieve timely response and take effective protection measures. Measures to prolong the service life of the motor to the greatest extent.

Description

technical field [0001] The invention relates to the technical field of motor control, in particular to a motor stall monitoring device, a motor protection system and a method thereof. Background technique [0002] With the development of motor technology, motors, as the core components of motion realization, are widely used in various fields of production and life. However, in practical applications, the motor has reliability problems. Among them, the motor stall is one of the important factors that endanger the reliability and life of the motor. There are many reasons for the motor to stall, such as the contact between the rotor and the stator is stuck, the driven equipment is stuck, the equipment is too loaded and the motor cannot be driven, etc. [0003] To realize stall detection and protection for traditional asynchronous motors, it is generally judged whether the motor is stalled by judging whether the loop current reaches the current value that needs protection. Whe...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01R31/34H02H7/08
CPCG01R31/343H02H7/08
Inventor 赵光焕王建龙熊毅厉剑波
Owner HANGZHOU SILAN MICROELECTRONICS
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