公开(公告)号：US11894696B2

公开(公告)日：2024-02-06

申请号：US17415089

申请日：2018-12-20

Applicant: UNIVERSITÄT STUTTGART

Inventor： Mike Böttigheimer ,  Nejila Parspour ,  Stefanie Hermann

IPC: H02J50/60 ,  H02J50/10 ,  B60L53/124 ,  H02J7/00

CPC classification number: H02J50/60 ,  B60L53/124 ,  H02J7/00711 ,  H02J50/10

Abstract: In a method and an apparatus for detecting electrically conductive foreign bodies during inductive energy transmission between a primary coil (1) and a secondary coil (2), at least one sensor coil (5) is arranged between the primary coil (1) and the secondary coil (2), and a current flowing in the sensor coil (5) due to the induced voltage during the energy transmission is detected and evaluated. In this case, the sensor coil (5) is connected to at least one capacitor to form a resonant circuit which is matched to the excitation frequency of the primary coil (1). The phase position of the current in the resonant circuit in relation to a reference signal is then used to determine whether there are electrically conductive foreign bodies (4) between the primary coil (1) and the secondary coil (2). A high degree of sensitivity, also in relation to small electrically conductive foreign bodies within the energy transmission path, is achieved by means of the method and the apparatus.

公开(公告)号：US20220103016A1

公开(公告)日：2022-03-31

申请号：US17487971

申请日：2021-09-28

Applicant: Universität Stuttgart

Inventor： Jannis Noeren ,  Andreas Gneiting ,  Nejila Parspour

IPC: H02J50/12 ,  H02P6/18 ,  H02K24/00 ,  H04B5/00

Abstract: The invention relates to a device for the contactless transfer of electric power to a load arranged on a rotor 20 of an electric machine and for detecting the angular position of the rotor 20. The device comprises an inductive power transfer path for the inductive transfer of electric power to the electrical load and a resolver for detecting an angular position of the rotor 20, wherein the inductive power transfer path and the resolver use one magnetic circuit.
The invention furthermore relates to a corresponding method and to a corresponding electric machine.

公开(公告)号：US12062994B2

公开(公告)日：2024-08-13

申请号：US17381443

申请日：2021-07-21

Applicant: UNIVERSITÄT STUTTGART

Inventor： David Maier ,  Marco Zimmer ,  Nejila Parspour

IPC: H02P6/15 ,  H02J50/10 ,  H02M7/217 ,  H02P9/12 ,  H02P25/022

CPC classification number: H02M7/217 ,  H02J50/10 ,  H02P25/022

Abstract: The present invention relates to a circuit arrangement having an active rectifier circuit, in particular on a secondary side of an inductive energy transmission path. The circuit arrangement has a half or full bridge of power transistors for rectifying an AC voltage induced in an input inductor of the circuit arrangement. The power transistors are connected to the input inductor in such a way that an auxiliary voltage is split off from the induced AC voltage for switching the power transistors. As a result, even large currents, which result in a low output voltage, can be transmitted without endangering the operation of the rectifier circuit.