A study on low-cost sensorless drive of brushless DC motor for compressor using random PWM

Recently, it is increased to apply sensorless drive for BLDC (brushless DC) motor to household electrical appliances, especially in the refrigerators and air conditioners, to reduce the cost and the acoustic noise by the operation and to make their functions more comfortable for human beings. In this paper, low-cost sensorless drive for BLDC motor is implemented by random PWM (pulse width modulation). The experimental results show that the electromagnetic noise was reduced and the sound quality was improved by BLDC motor sensorless random PWM Control.

[1]  Frede Blaabjerg,et al.  Random modulation techniques with fixed switching frequency for three-phase power converters , 2000 .

[2]  Dae-kyong Kim,et al.  A Novel Starting Method of the SPM-type BLDC Motors without Position Sensor for Reciprocating Compressor , 2006, Conference Record of the 2006 IEEE Industry Applications Conference Forty-First IAS Annual Meeting.

[3]  Hag-Wone Kim,et al.  Improving sound quality of reciprocating compressor using random PWM , 2000 .

[4]  Kwang-Woon Lee,et al.  Commutation torque ripple reduction in a position sensorless brushless DC motor drive , 2006, 2004 IEEE 35th Annual Power Electronics Specialists Conference (IEEE Cat. No.04CH37551).

[5]  Frede Blaabjerg,et al.  Field-oriented control of an induction motor using random pulse width modulation , 2000, APEC 2000. Fifteenth Annual IEEE Applied Power Electronics Conference and Exposition (Cat. No.00CH37058).