A Novel Starting Method of the Surface Permanent-Magnet BLDC Motors Without Position Sensor for Reciprocating Compressor

This paper describes a new position sensorless starting method, specialized for low-cost applications, of a brushless dc (BLDC) motor with a surface permanent-magnet (SPM) rotor to prevent demagnetization of permanent magnet and vibrations due to pulsating currents during the starting period. That t...

Full description

Saved in:
Bibliographic Details
Published in:IEEE transactions on industry applications 2008-01, Vol.44 (1), p.85-92
Main Authors: Lee, Kwang-Woon, Kim, Dae-Kyong, Kim, Byung-Taek, Kwon, Byung-Il
Format: Article
Language:English
Subjects:
Brushless dc motor
Brushless DC motors
Brushless motors
Commutation
Compressors
Current measurement
DC motors
Demagnetization
Magnetic sensors
Motors
Permanent magnet motors
Permanent magnets
reciprocating compressor
Reciprocating compressors
Rotors
Scanning probe microscopy
sensorless control
starting method
Vibration
Citations: Items that this one cites
Items that cite this one
Online Access:Get full text
Tags: Add Tag
No Tags, Be the first to tag this record!
Description
Summary:This paper describes a new position sensorless starting method, specialized for low-cost applications, of a brushless dc (BLDC) motor with a surface permanent-magnet (SPM) rotor to prevent demagnetization of permanent magnet and vibrations due to pulsating currents during the starting period. That the magnitude of peak current causes irreversible demagnetization of permanent magnet, has been measured through experimental tests. The proposed method limits the motor currents during the starting period to lower than the demagnetization currents by doing commutation depending on the level of the measured phase currents. Experimental results show that the proposed method implemented in an inverter for a BLDC motor-driven reciprocating compressor considerably reduces not only the pulsating currents but also the vibration of the compressor during starting.
ISSN:0093-9994
1939-9367
DOI:10.1109/TIA.2007.912734