Brushless DC motor system and method of controlling the same

Details Brushless DC motor system and method of controlling the same Brushless DC motor system and method of controlling the same

2006-11-28

2006-11-28

Donovan, Lincoln (Department: 2837)

Electricity: motive power systems

Switched reluctance motor commutation control

C318S132000, C318S434000, C318S599000

Reexamination Certificate

active

07141943

ABSTRACT:
A brushless DC (BLDC) motor system and a method of controlling the same are provided. The BLDC motor system comprises a BLDC motor including a rotator and a stator, a plurality of switches, a DC current sensor, a position detector and a controller. The stator has a plurality of coils to which currents having different phase are applied. The switches are driven with switching pulses for switching the currents applied to the coils. The position detector detects a position change of the rotator to thereby generate a counter-electromotive force and the DC current sensor senses currents when the currents are applied from the switches to the coils. Based on a magnitude of the counter electromotive force, the controller generates a compensation voltage in order to control the switches during the commutation interval. Further, a duty ratio of the switching pulse is controlled based on the differences between the currents applied to the coils and a reference current.

REFERENCES:
patent: 5350988 (1994-09-01), Le
patent: 5821708 (1998-10-01), Williams et al.
patent: 5914582 (1999-06-01), Takamoto et al.
patent: 6013994 (2000-01-01), Endo et al.
patent: 6388420 (2002-05-01), Jansen et al.
patent: 6400107 (2002-06-01), Nakatani et al.
patent: 6459230 (2002-10-01), Tao
patent: 6462491 (2002-10-01), Iijima et al.
patent: 6700343 (2004-03-01), Masaki et al.
patent: 6777898 (2004-08-01), Peterson
patent: 6856107 (2005-02-01), Daboussi
patent: 6894450 (2005-05-01), Cheng et al.
patent: 2001-136772 (1999-11-01), None
patent: 1020000050410 (1999-01-01), None

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