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Motor stalling monitoring device, and motor protection system and method

A monitoring device, a technology for motor stall, applied in measurement devices, motor generator testing, emergency protection circuit devices, etc., can solve problems such as increased system costs and inability to use sensors

Active Publication Date: 2019-12-20
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 stalling monitoring device, and motor protection system and method
  • Motor stalling monitoring device, and motor protection system and method
  • Motor stalling monitoring device, and motor protection system and method

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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

The invention provides a motor stalling monitoring device, and a motor protection system and method. The motor stalling monitoring device comprises: a processing module for obtaining feedback current,an estimated rotating speed and an estimated angle based on phase current of a motor; a control module for providing a phase control voltage based on a target rotating speed, the estimated angle andthe feedback current; and a judging module for judging whether the motor is subjected to stalling according to a quadrature axis voltage error value of a component of the calculated phase control voltage on a quadrature axis and / or a straight axis voltage error value of the component of the calculated phase control voltage on a straight axis, so as to provide a stalling early warning signal. According to the motor stalling monitoring device provided by the invention, the estimated rotating speed and the estimated angle of the motor are obtained through the processing module without using a position or rotating speed sensor. Furthermore, whether the motor is subjected to stalling through a straight axis judging method and / or a quadrature axis judging method, and the motor stalling monitoring device can be directly applied to all kinds of sensorless permanent magnet synchronous motor control systems to effectively detect the motor stalling state to achieve timely response and take effective protection measures to maximally extend the service life of the motor.

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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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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