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Sensorless commutation method

A stepless, observer technology, applied in the direction of electronic commutator, electronic commutation motor control, control of electromechanical brakes, etc., to achieve the effect of improving signal quality and optimizing starting action

Active Publication Date: 2017-12-01
EBM PAPST MULFINGEN GMBH & CO KG
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Furthermore, the drawback in the case of the prior art method is that the operation from actuation to transition to static load operation is designed as a multi-stage process

Method used

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Examples

Experimental program
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Embodiment Construction

[0040] figure 1 Embodiments of the present invention are shown in block diagram form. shows the circuit arrangement 1 for commutation of an EC motor in a stepless continuous process, i.e. from motor start to standstill without a rotor position setter, wherein the circuit arrangement 1 for detecting the variable of the motor terminals is connected to the motor via an interface 2a , 2b connection. The circuit arrangement 1 comprises a Clarke-Park converter 10, a detector 20, an observer 30 and a PLL configuration 40, wherein the Clarke-Park converter 10 is used to communicate with a motor Transformation corresponding to each terminal variable (current and terminal voltage) in the rotor synchronous d / q observer coordinate system, the detector 20 is configured to determine the minimum signal magnitude, the observer 30 is used to estimate EMK (electromotive force), the The PLL configuration 40 is used to calibrate the observer coordinate system.

[0041] By transforming, the ele...

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PUM

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Abstract

The invention relates to a circuit arrangement and to a method for sensorless commutation of electronically commutated synchronous motors, such as for example EC motors, wherein the terminal sizes at the connection terminals of the synchronous motor are processed by means of a rotor position estimator on the basis of the EMF of the synchronous motor and of a known motor model preferably in a PLL structure for sensorless determination of rotor position information and said information is used for commutation.

Description

technical field [0001] The invention relates to a circuit arrangement and a sensorless commutation method for electronically commutated synchronous motors, such as EC motors. Background technique [0002] Various EC motors are known from the prior art. For example, brushless DC motors (BLDC; Brushless DC Motors) have always been popular in the field of electric drive technology. Since in this motor type there is no mechanical or electrical contact between the stator and rotor of the BLDC motor, alternative requirements for motor operation are required in order to determine their respective positions. For BLDC motors, there are two possible approaches: sensor-controlled commutation or sensorless commutation. [0003] In sensor-controlled commutation, Hall sensors are used, for example, to detect the rotor flux, or optical sensors in the area of ​​the stator. Depending on the specific position information, the rotor winding is actuated by a power drive of a suitable control...

Claims

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Application Information

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IPC IPC(8): H02P6/182H02P21/04H02P21/13H02P21/24
CPCH02P21/24H02P6/182H02P21/04H02P21/13H02P6/17H02P21/32
Inventor F·施耐德
Owner EBM PAPST MULFINGEN GMBH & CO KG