Method and apparatus for determining a field current in...

H - Electricity – 02 – P

Patent

Rate now

  [ 0.00 ] – not rated yet Voters 0   Comments 0

Details

H02P 9/14 (2006.01) H02P 9/30 (2006.01)

Patent

CA 2707335

The invention relates to a method and an apparatus for determining a field current through a field winding in an electrical machine with a stator (2) and a rotor (4), wherein the electrical machine (1) comprises a field-circuit transformer (7) in order to bring about, by induction of an electrical current on the rotor side, the field current (I DC) with which a field winding (6) is energized in order to generate an excitation magnetic field, having the following steps: - driving on the primary side of the field-circuit transformer (7) in order to bring about a field current (I DC), which is derived from the current induced on the secondary side in the field-circuit transformer (7), in the rotor (4); - measurement of one or more phase currents in one or more primary-side phases of the field-circuit transformer (7); - determination of a maximum value (l peak_measure) depending on the one or more measured phase currents (I1); - determination of the field current (I DC) through the field winding (6) depending on the determined maximum value (l peak_measure). Image

L'invention concerne un procédé et un dispositif pour déterminer un courant d'excitation passant par un bobinage d'excitation dans une machine électrique pourvue d'un stator (2) et d'un rotor (4), sachant que la machine électrique (1) comprend un transformateur d'excitation (7) pour produire, par induction d'un courant électrique côté rotor, le courant d'excitation (IDC) alimentant le bobinage d'excitation (6) afin de produire un champ magnétique d'excitation. Ce procédé comprend les étapes suivantes : asservissement du transformateur d'excitation (7) du côté primaire, afin de produire dans le rotor (4) un courant d'excitation (IDC) qui est dérivé du courant induit du côté secondaire dans le transformateur d'excitation (7) ; mesure d'un ou plusieurs courants de phase dans une ou plusieurs phases du côté primaire du transformateur d'excitation (7) ; détermination d'une valeur maximale (lpeak measure) en fonction du ou des courants de phase mesurés (I1) ; détermination du courant d'excitation passant par le bobinage d'excitation (6) en fonction de la valeur maximale déterminée (lpeak measure).

LandOfFree

Say what you really think

Search LandOfFree.com for Canadian inventors and patents. Rate them and share your experience with other people.

Rating

Method and apparatus for determining a field current in... 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 determining a field current in..., we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Method and apparatus for determining a field current in... will most certainly appreciate the feedback.

Rate now

     

Profile ID: LFCA-PAI-O-1550743

  Search
All data on this website is collected from public sources. Our data reflects the most accurate information available at the time of publication.