Abstract: The invention relates to a rotor for a synchronous drive motor of an electrically driven motor vehicle having several rotor poles, wherein each rotor pole has at least three magnetic layers arranged radially one after the other with cavities, wherein an outermost magnetic layer includes at least one cavity filled with permanent magnetic material and each further magnetic layer includes at least two cavities filled with permanent magnetic material, furthermore each magnetic layer has an extension of a section of an ellipse, furthermore the central points of all ellipses lie within the smallest ellipse of the outer magnetic layer, wherein each cavity belonging to one of the at least three magnetic layers defines an interface in a radial plane, and each of these interfaces of a magnetic layer of the corresponding ellipse is divided into two partial interfaces, wherein bars made of the rotor material are formed in the second and every other magnetic layer between the cavities, and these bars, at the narrowest poi

Abstract: The invention relates to a rotor for a synchronous drive motor of an electrically driven motor vehicle having several rotor poles, wherein each rotor pole has at least three magnetic layers arranged radially one after the other with cavities, wherein an outermost magnetic layer includes at least one cavity filled with permanent magnetic material and each further magnetic layer includes at least two cavities filled with permanent magnetic material, furthermore each magnetic layer has an extension of a section of an ellipse, furthermore the central points of all ellipses lie within the smallest ellipse of the outer magnetic layer, wherein each cavity belonging to one of the at least three magnetic layers defines an interface in a radial plane, and each of these interfaces of a magnetic layer of the corresponding ellipse is divided into two partial interfaces, wherein bars made of the rotor material are formed in the second and every other magnetic layer between the cavities, and these bars, at the narrowest poi

Abstract: Transmitter coils (1, 1a . . . 1f) for contactless energy transmission systems (8) include a winding (2) with a number of turns of at least one conductor. Such winding (2) occupies ring area (3) between an outer larger unequilateral rectangle (4) and an inner smaller unequilateral rectangle (5). This ring area (3) is wider on the longer side (x1) of the outer rectangle (4) than it is on shorter side (x2). Transmitters (6) with such transmitter coils (1, 1a . . . 1f) may include a number of conductors and a number of power supplies (7, 7a, 7b) that may be switched and/or controlled independently of each other. Energy transmission systems (8) with such transmitter coils (1a . . . 1f)/such transmitters (6) as well as receiver coils (10) installed in motor vehicles (9), are also disclosed.

Abstract: The invention relates to a transmitter coil (1, 1a . . . 1f) for a contactless energy transmission system (8), comprising a winding (2) with a number of turns of at least one conductor. The winding (2) occupies a ring area (3) between an outer larger unequilateral rectangle (4) and an inner smaller unequilateral rectangle (5). The ring area (3) is wider on the longer side (x1) of the outer rectangle (4) than it is on the shorter side (x2) thereof. Moreover a transmitter (6) with such a transmitter coil (1, 1a . . . 1f) is proposed, which comprises a number of conductors and a number of power supplies (7, 7a, 7b) which can be switched and/or controlled independently of each other. Finally the invention also relates to an energy transmission system (8) with such a transmitter coil (1a . . . 1f)/such a transmitter (6) as well as a receiver coil (10) installed in a motor vehicle (9).