TY - JOUR
T1 - Low-speed performance comparisons of back-EMF detection circuits with position-dependent load torque
AU - Chen, Hung-Chi
AU - Tsai, T. Y.
AU - Huang, C. K.
PY - 2009/3/3
Y1 - 2009/3/3
N2 - Because of the widely used brushless DC motors (BDCMs) in high-efficiency variable-speed compressors, many sensorless controls with square-wave operation had been developed in the literatures. Recently, more and more low-production-cost BDCM-type compressors with position-dependent load torque, such as rotary compressors, are applied to the residential products, which lead to the importance of low-speed performance of sensorless control. The authors address the low-speed performance comparisons between two common back-EMF detecting circuits (BEDCs). Without using the actual refrigerant system, a Motor-Generator set coupled with a disk and copper cylinder are also built up to serve as the experimental position-dependent load torque. From the simulated and experimental results, one of the BEDCs is better than the other one for the low-speed application of position-dependent load torque.
AB - Because of the widely used brushless DC motors (BDCMs) in high-efficiency variable-speed compressors, many sensorless controls with square-wave operation had been developed in the literatures. Recently, more and more low-production-cost BDCM-type compressors with position-dependent load torque, such as rotary compressors, are applied to the residential products, which lead to the importance of low-speed performance of sensorless control. The authors address the low-speed performance comparisons between two common back-EMF detecting circuits (BEDCs). Without using the actual refrigerant system, a Motor-Generator set coupled with a disk and copper cylinder are also built up to serve as the experimental position-dependent load torque. From the simulated and experimental results, one of the BEDCs is better than the other one for the low-speed application of position-dependent load torque.
UR - http://www.scopus.com/inward/record.url?scp=60949103586&partnerID=8YFLogxK
U2 - 10.1049/iet-epa:20080017
DO - 10.1049/iet-epa:20080017
M3 - Article
AN - SCOPUS:60949103586
VL - 3
SP - 160
EP - 169
JO - IET Electric Power Applications
JF - IET Electric Power Applications
SN - 1751-8660
IS - 2
ER -