Novel PWM technique without causing reversal DC-link current for brushless DC motor drives with bootstrap driver

For small power applications of brushless DC motor (BLDM) drives, the inverter consists of MOSFET and bootstrap driver. The speed of BLDM is controlled by the frequency and duty of the pulse-width modulation (PWM) technique, which is one of the key technologies for the development of BLDM drives. This paper presents a novel PWM technique for BLDM drives with bootstrap driver circuit. As compared with existing PWM techniques for BLDM drives the presented technique doesn't cause any reversal DC-link current and thereby reducing the DC-link voltage fluctuation of the drives. Experimental results derived from an FPGA-based BLDM drives are presented to fully support the analysis and claim.

[1]  Jianwen Shao,et al.  A novel microcontroller-based sensorless brushless DC (BLDC) motor drive for automotive fuel pumps , 2002, Conference Record of the 2002 IEEE Industry Applications Conference. 37th IAS Annual Meeting (Cat. No.02CH37344).

[2]  Yen-Shin Lai,et al.  Novel loss reduction pulsewidth modulation technique for brushless dc motor drives fed by MOSFET inverter , 2004, IEEE Transactions on Power Electronics.

[3]  Gui-Jia Su,et al.  Low-cost sensorless control of brushless DC motors with improved speed range , 2004, IEEE Transactions on Power Electronics.

[4]  H. Akagi,et al.  An approach to position sensorless drive for brushless DC motors , 1990, Conference Record of the 1990 IEEE Industry Applications Society Annual Meeting.

[5]  Mehrdad Ehsani,et al.  Four-quadrant sensorless brushless ECM drive , 1991, [Proceedings] APEC '91: Sixth Annual Applied Power Electronics Conference and Exhibition.

[6]  Toshiaki Oya,et al.  Control for a brushless motor , 2007 .

[7]  Yen-Shin Lai,et al.  Novel pulse-width modulation technique with loss reduction for small power brushless DC motor drives , 2002, Conference Record of the 2002 IEEE Industry Applications Conference. 37th IAS Annual Meeting (Cat. No.02CH37344).

[8]  Fu-San Shyu,et al.  Novel loss reduction pulsewidth modulation technique for brushless dc motor drives fed by MOSFET inverter , 2004 .