Method and arrangement for controlling a current

Details Method and arrangement for controlling a current Method and arrangement for controlling a current

1999-08-17

2000-04-11

Sircus, Brian

Electricity: motive power systems

Limitation of motor load, current, torque or force

318685, 318696, 318254, H02K 1732

Patent

active

060491841

ABSTRACT:
To control the current through a winding interconnected in an H-bridge to control e.g. a stepping motor, at the beginning of each chopper period, the H-bridge is kept in its slow demagnetization state during predetermined interval (t1-t2). Then, just before, at or just after the end of that interval, the actual current value (IA) is compared with a desired value (ID). If the actual value (IA) is smaller, the H-bridge is kept in its magnetization state, at the most until the end of the chopper period. If the actual value is larger, the H-bridge is kept in its fast demagnetization state, at the most until the end of the chopper period. Hereby, the current is regulated to the desired value with a minimum of current ripple. This reduces the electromagnetic radiation. Also, the impact of current spikes, appearing when the H-bridge is switched, is brought to a minimum.

REFERENCES:
patent: 4581565 (1986-04-01), Van Pelt et al.
patent: 5343382 (1994-08-01), Hale et al.
patent: 5372045 (1994-12-01), Schulz et al.
patent: 5457364 (1995-10-01), Bilotti et al.
patent: 5530639 (1996-06-01), Schulz et al.
patent: 5650705 (1997-07-01), Hart
patent: 5930103 (1999-07-01), Heck
patent: 5986418 (1999-11-01), Horst et al.

Affiliated with

Also associated with

Rating

Method and arrangement for controlling a current does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Method and arrangement for controlling a current, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Method and arrangement for controlling a current will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-1179278