Abstract: A hybrid-energized synchronous machine includes a laminated stator core that is arranged in a magnetic yoke and is divided axially into at least two core halves between which there is a field coil, where the rotor of this machine is also divided in two halves, where each rotor half has pole parts that are provided with permanent magnets and those that are not provided with permanent magnets, where one rotor half is equipped with permanent magnets of one polarity (N) and the other rotor half is equipped with permanent magnets of the other polarity (S), and pole parts of both rotor halves that are equipped with permanent magnets are offset by one pole pitch with respect to each other. The synchronous electric machine is also provided with an electric field coil designed as a ring coil. Both scattering losses and line losses can be reduced due to the fact that rotor halves are arranged on rotor shaft with an axial distance between them, and field coil is inserted into the space between rotor halves.

Abstract: A hybrid-energized electric machine includes a laminated stator core that has a stator winding and is arranged in a magnetic yoke, where the rotor is divided axially into two rotor halves, and each rotor half has permanent-field poles and non-energized poles arranged in succession in accordance with the pole pitch, where one rotor half is fitted with permanent magnets of one polarity (N) and the other rotor half is fitted with permanent magnets of the other polarity (S), and the permanent-field poles of both rotor halves are offset with respect to each other by one pole pitch, and said electric machine is also provided with an electric field coil designed as a ring coil. Both scattering and line losses can be reduced due to the fact that rotor halves are arranged on the rotor shaft with an axial distance between them, and field coil is inserted into the space between rotor halves.

Abstract: The present invention relates to an electrical machine having a permanent-magnet-excited rotor. On the perimeter of the rotor, several plate-like or lamellar permanent magnets are arranged for each rotor pole directly at the air gap adjacent to the stator of the machine. Combinations of stator-slotting harmonic fields and harmonic fields based on the division of the magnets that lead to oscillating torques. These oscillating torques are largely suppressed by having the total number of permanent magnets configured on the rotor correspond to a prime number greater than three.