Electricity: motive power systems – Motor load – armature current or force control during... – Initial – 'cracking' or 'starting from rest' torque control
Patent
1993-06-14
1994-08-30
Ro, Bentsu
Electricity: motive power systems
Motor load, armature current or force control during...
Initial, 'cracking' or 'starting from rest' torque control
H02P 118
Patent
active
053431294
ABSTRACT:
A drive circuit for a brushless direct-current motor, particularly a fan motor, which permits a flexible control or regulation of the power delivered to the direct-current motor depending on a desired or reference value. The drive circuit consists of power output stages which are supplied via a rectifier circuit direct from the a.c. supply, while the control of the power output stages is effected by a special control circuit. This control circuit is supplied via an auxiliary supply part from the a.c. supply. The control circuit delivers ramp-shaped output pluses each driving a control pulse for the motor current which comprises within each commutation phase a pulse that can vary from a symmetrical triangular form to a trapezoidal form. The driving circuit includes a restart circuit which supplies a separate supply voltage to an intermediate drive stage in a fashion which becomes intermittent if the motor is overloaded or blocked.
REFERENCES:
patent: 3801887 (1974-04-01), Allard
patent: 4052650 (1977-10-01), Gramkow
patent: 4263535 (1981-04-01), Jones
patent: 4481449 (1984-11-01), Rodal
patent: 4507591 (1985-03-01), Kelleher
patent: 4510422 (1985-04-01), Ogura
patent: 4583028 (1986-04-01), Angersbach et al.
patent: 4591768 (1986-05-01), Kudelski
patent: 4656553 (1987-04-01), Brown
patent: 4760317 (1988-07-01), Hetzel et al.
patent: 4804892 (1989-02-01), Mueller
patent: 4814674 (1989-03-01), Hrassky
patent: 4827196 (1989-05-01), Odell
patent: 4856078 (1989-08-01), Konopka
patent: 4924156 (1990-05-01), Mueller
patent: 5038083 (1991-08-01), Mueller
M. Yamamoto et al., "High Voltage DC Brushless Motor Driven in PWM Mode" National Technical Report, vol. 37, No. 2, Apr. 1991.
The published data sheet of Harris Corporation for the HV-2405E Single Chip Power Supply, consisting of 12 pates and published Feb. 1990.
Hans Helmut
Moini Mojtaba
Papst Licensing GmbH
Ro Bentsu
LandOfFree
Drive circuit for a brushless direct-current motor does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Drive circuit for a brushless direct-current motor, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Drive circuit for a brushless direct-current motor will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-31832