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Method and motor for operating a motor

A technology of electric motors and sensor signals, which is applied in the direction of motor control, electrical components, electronic commutators, etc., and can solve problems such as personal injury and incorrectly knowing the motor speed

Active Publication Date: 2021-08-31
BAUMULLER NURNBERG GMBH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

It is also possible, although unlikely, that the rotational speed of the motor is not correctly known or is not correctly evaluated with the help of the monitoring electronics, which leads to so-called frozen position information
In this case, the exceeding of the limited rotational speed is not detected, or at least not detected in time, so that injury to persons may still occur

Method used

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  • Method and motor for operating a motor
  • Method and motor for operating a motor
  • Method and motor for operating a motor

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Embodiment Construction

[0043] exist figure 1 FIG. 2 shows a brushless electric motor 2 with a stator 4 and a rotor 6 , which is mounted rotatably about an axis of rotation 8 inside the stator 4 . During operation, the rotor 6 moves relative to the stator 4 in the direction of rotation 10 . Furthermore, the electric motor 2 comprises a control unit 12 which is in electrical contact with the electromagnets of the stator 4 by means of current lines 14 , realized by means of electric coils interconnected with each other in a delta or star circuit. The control unit 12 itself comprises a converter having a certain number of power semiconductor switches interconnected with each other in the manner of a bridge circuit. A speed regulation system 15 including a PI regulator of a control unit 12 applies a voltage U to the electromagnets of the stator 4 and regulates the flow current I via the current line 14 . The adjustment takes place in such a way that the achieved rotational movement of the rotor 6 corre...

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PUM

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Abstract

The invention relates to a method for operating an electric machine and an electric machine, the electric machine having a stator (4) and a mover (6) and comprising means for detecting the position of the mover (6) relative to the stator (4) or a change in position and a second sensor (24) for detecting the acceleration of the mover (6) relative to the stator (4). A first sensor signal (23) is detected by means of a first sensor (18) and a second sensor signal (31) is detected by means of a second sensor (24). The speed (48) is determined in combination with the first and second sensor signals (23, 31). The speed (48) is communicated to a speed regulation system (15) and a safety monitoring system (38) for implementing the first safety function (40).

Description

technical field [0001] The invention relates not only to a method for operating an electric machine, but also to an electric machine. The motor has a stator and a mover. An electric machine is understood to be a generator, but in particular an electric motor. The motor is preferably brushless. Background technique [0002] As a rule, industrial plants have a large number of rotary electric motors, by means of which, for example, tools or conveyor belts are driven. The electrical energy required for this is provided by means of converters which are signal-connected to the process control system. The rated speed is preset by means of the process control system, and the corresponding electric motor is adjusted to this rated speed by means of the associated converter. The converter is electrically connected to the power supply network and has semiconductor switches which are connected in series between the power supply network and the electric machine. The actuation of the ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H02P6/17H02P29/10
CPCH02P6/16H02P6/17
Inventor 安德拉斯·莱尔凯什
Owner BAUMULLER NURNBERG GMBH