Controller for a brushless direct-current motor
Number of patents in Portfolio can not be more than 2000
United States of America Patent
Stats
-
Oct 10, 2017
Grant Date -
May 14, 2015
app pub date -
Apr 18, 2013
filing date -
Apr 19, 2012
priority date (Note) -
In Force
status (Latency Note)
Importance
Abstract
A controller for a brushless direct-current motor having an upstream converter, which has a half-bridge having a pair of switching means for each phase winding of the motor, includes a measuring device or has a signal connection to a measuring device. The measuring device is associated with a half-bridge and by means of the measuring device, the induced voltage, the counterelectromotive force of a phase winding, can be detected for rotor position detection in the current-free state, for which purpose the controller, in an operating mode that causes the braking and in which the switching means cause a short circuit of the phase windings, briefly opens the switching means associated with the measuring device in order to determine a rotor motion.
First Claim
Other Claims data not available
Family
International Classification(s)
Cited Art Landscape
Patent Citation Ranking
- 6 Citation Count
- H02P Class
- 12.72 % this patent is cited more than
- 8 Age
Maintenance Fees
| Fee | Large entity fee | small entity fee | micro entity fee | due date |
|---|---|---|---|---|
| 7.5 Year Payment | $3600.00 | $1800.00 | $900.00 | Apr 10, 2025 |
| 11.5 Year Payment | $7400.00 | $3700.00 | $1850.00 | Apr 10, 2029 |
