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公开(公告)号：US10541632B2
公开(公告)日：2020-01-21
申请号：US15551328
申请日：2016-01-14
发明人： Fabian Schneider
摘要： The present invention relates to a circuit arrangement and to a method for sensorless commutation of electronically commutated synchronous machines such as, for example, EC motors, wherein the terminal values at the connection terminals of the synchronous machine are processed by means of a rotor position estimator based on the EMF of the synchronous machine and of a known motor model preferably in a PLL structure for sensorless determination of rotor position information, and said information is used for commutation.
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公开(公告)号：US20200015360A1
公开(公告)日：2020-01-09
申请号：US16489751
申请日：2018-05-24
发明人： Joachim Berberich , Jan Fröhlich , Alexander Lust
摘要： A component holding device for the fixed-position arrangement of an electric component on a circuit board, having a support side for receiving the electric component, wherein at least one pretensioning element and at least one first latching element for the fixed-position latching of the electric component are provided on the support side, and the at least one pretensioning element is designed to exert a pretensioning force on the electric component, which presses the electric component against the at least one first latching element, and having at least one second latching element on an underside lying opposite the support side, wherein the second latching element is designed to fix the component holding device in a predefined location in a fixed position on the circuit board.
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公开(公告)号：US10345347B2
公开(公告)日：2019-07-09
申请号：US14831015
申请日：2015-08-20
发明人： Guenther Haas , Helmut Lipp
IPC分类号： G01R19/165 , G01R19/10 , H02H3/16 , H02H3/33 , H02H5/12 , H02H7/12 , G01R31/12 , G01R31/28 , H02H3/087
摘要： The invention relates to a method and a device for detecting fault currents in a regulated DC intermediate circuit having an active power factor correction.
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公开(公告)号：US10284050B2
公开(公告)日：2019-05-07
申请号：US15737975
申请日：2016-05-04
发明人： Sebastian Schroth , Roland Oberst , Malte Pils , Marco Weckert
摘要： The present invention relates to an apparatus for reducing and/or avoiding harmful bearing currents in an electrical machine (M) such as preferably a three-phase EC motor (M), with a rotor (2) and a stator (3) which is constructed in an insulated manner, wherein at least one outer bearing ring (4a) and one inner bearing ring (4b) are provided between rotor (2) and stator (3), comprising connecting electronics (10) for connecting the motor (M), wherein the stator (3) is connected by means of an electrical connection (20) to a high-frequency electronics potential (11) which differs from the earth potential (UE) and is stable with respect to the latter at a potential tap (20a) of the connecting electronics (10).
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公开(公告)号：US20180301953A1
公开(公告)日：2018-10-18
申请号：US15737975
申请日：2016-05-04
发明人： Sebastian SCHROTH , Roland OBERST , Malte PILS , Marco WECKERT
CPC分类号： H02K5/1732 , H02K11/20 , H02K11/40 , H02P27/06
摘要： The present invention relates to an apparatus for reducing and/or avoiding harmful bearing currents in an electrical machine (M) such as preferably a three-phase EC motor (M), with a rotor (2) and a stator (3) which is constructed in an insulated manner, wherein at least one outer bearing ring (4a) and one inner bearing ring (4b) are provided between rotor (2) and stator (3), comprising connecting electronics (10) for connecting the motor (M), wherein the stator (3) is connected by means of an electrical connection (20) to a high-frequency electronics potential (11) which differs from the earth potential (UE) and is stable with respect to the latter at a potential tap (20a) of the connecting electronics (10).
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公开(公告)号：US10069382B2
公开(公告)日：2018-09-04
申请号：US14856025
申请日：2015-09-16
发明人： Michael Sturm , Wolfang Ströbel
摘要： The invention relates to an earthing device for preventing rotor-induced bearing currents in an electric motor, comprising an electrically conductive annular element having retaining means arranged thereon, to which means fiber bundles are fastened, via which bundles electrical discharge of a static charge to at least one discharge element can be carried out, wherein the fiber bundles are fastened so as to be oriented in an oblique angular position with respect to a radial plane which is perpendicular to an axial center line of the annular element and/or with respect to an axial plane and have a length protruding from the retaining means of the annular element which is greater than that required to bridge a radial spacing between the annular element and the discharge element.
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公开(公告)号：US10018206B2
公开(公告)日：2018-07-10
申请号：US14428595
申请日：2013-07-24
发明人： Jürgen Moll , Christian Hammel
CPC分类号： F04D29/662 , F04D17/16 , F04D19/002 , F04D29/601
摘要： The invention relates to an impeller (1) for a fan, in particular an axial or radial fan having a hub (2) for connecting the impeller (1) to a drive motor and having fan blades (6) which are arranged circumferentially around the hub (2) and having pockets (9) in the hub region, having balance weights (15) which can be fastened therein, aligned in the axial direction. The balance weights (15) are made of U-shaped, bent weight clips made of spring-elastic material, having at least two opposite clip legs extending parallel to each other which are connected to each other via a bend section, and comprise a clamping gap between the clip legs. One of the clip legs extends within the pockets (9) and the other clip leg extends outside of the pockets (9), such that there is a clamping seat on a pocket wall (12) extending in the clamping gap.
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公开(公告)号：US20170163122A1
公开(公告)日：2017-06-08
申请号：US15368097
申请日：2016-12-02
发明人： Michael Sturm , Thomas Sauer
CPC分类号： H02K5/20 , H02K5/18 , H02K7/14 , H02K9/02 , H02K11/0094 , H02K11/33 , H05K5/03 , H05K7/20145
摘要： The invention concerns a cover device for an electronics housing of an electric motor with at least one base segment and at least one rib formed on the base segment, wherein the base segment is geometrically configured so as to cover at least part of the surface of an electronics housing opening for drawing in a cooling air volume flow in order to close the electronics housing opening at least for a portion against the intrusion of solids, and the base segment forms with the at least one rib at least one flow duct, which can be fluidically connected to the electronics housing opening, and wherein the cover device is designed as a modular insert for the electronics housing.
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公开(公告)号：US09638214B2
公开(公告)日：2017-05-02
申请号：US14342462
申请日：2011-10-12
申请人： Christian Hammel , Jürgen Moll
发明人： Christian Hammel , Jürgen Moll
CPC分类号： F04D29/662 , F01D5/027 , F01D5/10 , F04D29/281
摘要： A balancing weight to balance a blower wheel. The balancing weight is constructed in two pieces consisting of a spring clip and a supplemental weight. The spring clip features a retaining section for securing on the blower wheel and a receptacle section for mounting the supplemental weight.
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