| Patent application number | Description | Published |
|---|
| 20100102663 | ELECTRICAL MACHINE - The present invention relates to an electrical machine having a rotor, a stator, a rotating-field production device, and a pole-field production device. The rotor can rotate about a rotation axis which passes through opposed upper and lower portions of the rotor. The rotating-field production produces an essentially radial magnetic field which rotates about the rotation axis of the rotor. The pole-field production device produces a magnetic field of opposite polarity to the rotor on the upper and lower portions. In order to reduce the size of the electrical machine without reducing the power, the pole-field production device has at least one magnet. | 04-29-2010 |
| 20100156230 | ALTERNATOR FOR MOTOR VEHICLES - An alternator for motor vehicles, having a rotor, whose poles are developed as claw-poles. In order to improve the design options of the stator of the machine, its multiphase winding is developed as a fractional-slot winding, whereby, in particular with respect to the selection of the number of slots, many additional options are created, by which both the production is made clearly simpler and less costly and, at the same time, the electrical properties are able to be improved. | 06-24-2010 |
| 20100187941 | 18/8 SYNCHRONOUS MOTOR - The invention relates to a synchronous motor ( | 07-29-2010 |
| 20100207480 | ELECTRIC MACHINE COMPRISING A ROTOR WITH HYBRID EXCITATION - A synchronous electric machine having a fixed stator, a multi-phase stator winding and having a rotor which has poles, excited in a predefined sequence, over its circumference, the number of poles being changeable as a function of the intensity and the direction of a field current in at least one field coil of the rotor. For improving the efficiency of the machine and for reducing the number of field coils and the entire coil cross section it is provided that the rotor has a laminated core, laminated in the axial direction, which has grooves on the circumference for accommodating the at least one field coil and that the at least one field coil is situated on the circumference of the rotor with a step size which corresponds to the pole pitch of the lower number of poles. | 08-19-2010 |
| 20100289370 | SYNCHRONOUS MOTOR HAVING 12 STATOR TEETH AND 10 ROTOR POLES - The invention relates to an electric machine ( | 11-18-2010 |
| 20110057597 | ELECTRICAL MACHINE - The invention relates to an electrical machine and to a method for the operation thereof, particularly as a drive motor for an electrical tool or as starter generator for a motor vehicle. The electrical machine includes a rotor excited by a permanent magnet and a stator carrying a multi-phase winding, and operates in a voltage-controlled, lower rotational speed range via a transformer on a DC voltage source. The electrical machine can also be operated in a higher rotational speed range by field weakening, and the structure of the machine can be changed by reducing the flux linkage between the rotor and the stator in order to weaken the field. Preferably, the change to the structure of the machine is carried out by turning off winding parts or by switching them between series and parallel connections. | 03-10-2011 |
| 20110210637 | ROTOR FOR AN ELECTRIC MACHINE WITH REDUCED DETENT TORQUE - The invention relates to an electric machine, in particular to a generator for supplying the electrical system of a motor vehicle, comprising a laminated rotor ( | 09-01-2011 |
| 20110215744 | METHOD FOR DETECTING THE ROTOR POSITION OF AN ELECTRIC MACHINE, AND DEVICE FOR THE SAME - The invention relates to a method for providing information on a rotor position of a rotor of an electric machine ( | 09-08-2011 |
