Electricity: motive power systems – Switched reluctance motor commutation control
Reexamination Certificate
2005-03-08
2005-03-08
Leykin, Rita (Department: 2837)
Electricity: motive power systems
Switched reluctance motor commutation control
C318S132000, C318S432000
Reexamination Certificate
active
06864649
ABSTRACT:
A method and an apparatus for current supply of an electronically commutated electric motor by a semiconductor power end stage are described, which has an arrangement for ascertaining the current received by the motor and an electronic controller for controlling the branch currents of the motor. For this purpose the electronic controller receives an input signal from a single current sensor (24) in a common conductor (26) of the semiconductor switches of the end stage, the terminal voltages (U1, U2, U3) of the individual branch windings (16, 18, 20) as well as the total voltage (U) applied to the end stage. From these input voltages and the input signal the electronic controller determines respective voltage drops at the individual semiconductor switches under logical incorporation of control signals (G1-G6) produced by the electronic controller. For the voltage drop at a particular semiconductor switch its respective conducting state D.C. resistance can be ascertained, so that additional current sensors in the individual branches for controlling the branch currents (I1, I2, I3) are not necessary.
REFERENCES:
patent: 4686436 (1987-08-01), Archer
patent: 4882511 (1989-11-01), von der Heide
patent: 5719484 (1998-02-01), Taniguchi et al.
patent: 6452349 (2002-09-01), Hahn et al.
patent: 29 30 863 (1981-04-01), None
Leykin Rita
Robert & Bosch GmbH
Striker Michael J.
LandOfFree
Method and apparatus for supplying current to an... 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 apparatus for supplying current to an..., we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Method and apparatus for supplying current to an... will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-3421422