Please use this identifier to cite or link to this item: http://repositorio.unicamp.br/jspui/handle/REPOSIP/421
Type: Artigo de periódico
Title: A new technique to control brushless motor for blood pump application
Author: FONSECA, Jeison
ANDRADE, Aron
NICOLOSI, Denys E. C.
BISCEGLI, Jose F.
LEGENDRE, Daniel
BOCK, Eduardo
LUCCHI, Julio CeSar
Abstract: This article presents a back-electromotive force (BEMF)-based technique of detection for sensorless brushless direct current motor (BLDCM) drivers. The BLDCM has been chosen as the energy converter in rotary or pulsatile blood pumps that use electrical motors for pumping. However, in order to operate properly, the BLDCM driver needs to know the shaft position. Usually, that information is obtained through a set of Hall sensors assembled close to the rotor and connected to the electronic controller by wires. Sometimes, a large distance between the motor and controller makes the system susceptible to interference on the sensor signal because of winding current switching. Thus, the goal of the sensorless technique presented in this study is to avoid this problem. First, the operation of BLDCM was evaluated on the electronic simulator PSpice. Then, a BEMF detector circuitry was assembled in our laboratories. For the tests, a sensor-dependent system was assembled where the direct comparison between the Hall sensors signals and the detected signals was performed. The obtained results showed that the output sensorless detector signals are very similar to the Hall signals at speeds of more than 2500 rpm. Therefore, the sensorless technique is recommended as a responsible or redundant system to be used in rotary blood pumps.
Subject: artificial heart
blood pump
brushless
sensorless
Country: Inglaterra
Editor: BLACKWELL PUBLISHING
Citation: ARTIFICIAL ORGANS, v.32, n.4, p.355-359, 2008
Rights: fechado
Identifier DOI: 10.1111/j.1525-1594.2008.00554.x
Address: http://apps.isiknowledge.com/InboundService.do?Func=Frame&product=WOS&action=retrieve&SrcApp=EndNote&UT=000254412900017&Init=Yes&SrcAuth=ResearchSoft&mode=FullRecord
http://dx.doi.org/10.1111/j.1525-1594.2008.00554.x
Date Issue: 2008
Appears in Collections:FEM - Artigos e Outros Documentos

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