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51. 发明申请

US20190199263A1 BOARD-LEVEL MOTOR CONTROL SYSTEM WITH INTEGRATED PROTECTION AND CONTROL COMPONENTS 审中-公开
公开(公告)号：US20190199263A1
公开(公告)日：2019-06-27
申请号：US15854096
申请日：2017-12-26
申请人： Eaton Corporation
发明人： Huaqiang Li , Joshua B. Gross , Joseph Paul Uphaus , Thomas M. Ruchti , Kaijam M. Woodley
IPC分类号： H02P27/04 , H02H7/08 , H02H9/02 , H02H9/04 , H05K1/02 , H02M7/5387
摘要： A motor control system for selectively controlling power from a power source to a load is provided. The motor control system includes at least one PCB structure and a plurality of protection and control components mounted onto the at least one PCB structure so as to be electrically coupled therewith. The plurality of protection and control components includes a power converter operable to provide a controlled output power to the load, a plurality of switching devices operable to selectively control power flow from the power source into the power converter and to bypass the power converter, and one or more protection devices configured to selectively interrupt current flow from the power source to the power converter during a fault condition. The motor control system also includes a housing enclosing the at least one PCB structure and the plurality of protection and control components.

52. 发明申请

US20190190253A1 DYNAMIC MOTOR CURRENT PHASE UNBALANCE PROTECTION 审中-公开
公开(公告)号：US20190190253A1
公开(公告)日：2019-06-20
申请号：US15848552
申请日：2017-12-20
申请人： SCHNEIDER ELECTRIC USA, INC.
发明人： Kevin M. JEFFERIES , Benjamin W. EDWARDS , Matthew L. WHITE , Alan E. FREEMAN , Richard K. WEILER
IPC分类号： H02H7/08
CPC分类号： H02H7/08 , H02H3/006 , H02H7/09
摘要： In accordance with an example embodiment of the invention, in an overload relay for a three-phase motor, an adjusted threshold for detected current phase unbalance is dynamically determined at which the relay will be tripped. The adjusted threshold is a function of a ratio of an average of currents in the three-phases to the rated full load current of the motor, i.e., motor load. As the motor load decreases, the adjusted current phase unbalance threshold is increased, causing the resulting trip time to increase, thereby increasing motor run time and reducing downtime.

53. 发明授权

US10320182B2 Safety circuit for a rotary drive 有权
公开(公告)号：US10320182B2
公开(公告)日：2019-06-11
申请号：US15484289
申请日：2017-04-11
申请人： Stabilus GmbH
发明人： Marian Bochen
IPC分类号： H02P6/08 , H02P6/15 , H02P9/02 , H02H7/08 , E05F15/611 , E05F15/622 , B60J5/10 , H02P3/06 , B62D25/10
摘要： Safety circuit for a rotary drive, in particular for a vehicle hatch, which circuit has a braking effect on the rotary drive when the rotary drive is deactivated and external forces are applied to the hatch from the outside, the rotary drive comprising at least one electric motor, the winding of which can be short-circuited by at least one triac, in which just one triac is provided between the connections of the winding, the gate of which triac is connected to one of the connections by two Zener diodes that are connected in series in an anti-parallel manner.

54. 发明授权

US10310484B2 Device and method for failsafe monitoring of a moving machine part 有权
公开(公告)号：US10310484B2
公开(公告)日：2019-06-04
申请号：US15336050
申请日：2016-10-27
申请人： Pilz GmbH & Co. KG
发明人： Michael Schlecht
IPC分类号： G05B19/406 , H02H7/08 , G05B9/02 , G05B23/02
摘要： A device for failsafe monitoring a number of passes of a moving machine part through a defined movement region comprising an input for receiving an encoder signal, which represents a motion value of the moving machine part. The device further comprises a failsafe evaluation unit for providing a failsafe shutdown signal as a function of the number of passes of the moving machine part through the defined movement region. The failsafe evaluation unit is configured to determine the number of passes of the moving machine part through the defined movement region from the motion value.

55. 发明授权

US10305401B2 Motor drive circuit 有权
公开(公告)号：US10305401B2
公开(公告)日：2019-05-28
申请号：US15786747
申请日：2017-10-18
申请人： TRW Limited
发明人： Nathanael Rice , David Moule , Geoffrey Holland
IPC分类号： H02H7/08 , H02P7/29 , H02P7/03 , H02P29/028 , H02H1/00 , H02P27/06
摘要： An electrical circuit for driving at least one electric motor, the at least one motor having at least one set of phases windings. The electrical circuit is arranged as at least one lane comprising a motor drive circuit that is operable in use to supply drive voltages to one of the sets of phase windings of the motor. A reverse battery protection circuit is provided for at least one lane and is located in either a feed to the motor drive circuit from a power supply or in a return path from the motor drive circuit to the power supply. The reverse battery protection circuit comprises a switch which is normally open when the battery is disconnected and which remains open in the event that the battery is connected in error with a reverse polarity to the drive circuit. The electrical circuit also includes a control means which is arranged to control the switch of the reverse battery protection circuit so as to close the switch in the event that the control means determines that the battery is connected with the correct polarity. The switch is also opened during operation of the motor in the event that that one or more additional conditions are met.

56. 发明授权

US10291171B2 Motor control apparatus 有权
公开(公告)号：US10291171B2
公开(公告)日：2019-05-14
申请号：US15870100
申请日：2018-01-12
申请人： Mitsubishi Electric Corporation
发明人： Naoki Moritake , Tomohiro Kimura , Kazunari Masudome
IPC分类号： H02P29/024 , B60L11/18 , H02H7/08
摘要： An upper switching device and a lower switching device in an electric-power conversion unit are separately driven to close by an upper closing command signal and a lower closing command signal, respectively, generated by a calculation control unit; in response to occurrence of an excessive current abnormality or an excessive voltage abnormality, upper and lower selection circuits and a penetration prevention circuit provided in a signal path select an upper three-phase short-circuiting command signal or a lower three-phase short-circuiting command signal, or an upper-and-lower six-phase cutoff command signal, and a penetration prevention time prohibits upper and lower switching devices from being concurrently closed; when an excessive voltage abnormality occurs, the three-phase short-circuiting command signal is immediately generated, without an advanced cutoff operation being performed. As a result, excessive-voltage breakage of the circuit components is prevented.

57. 发明申请

US20190128941A1 FAULT DETECTION CIRCUIT AND RELATED METHODS 审中-公开
公开(公告)号：US20190128941A1
公开(公告)日：2019-05-02
申请号：US15796336
申请日：2017-10-27
申请人： SEMICONDUCTOR COMPONENTS INDUSTRIES, LLC
发明人： Riley BECK , Rishi Pratap SINGH
IPC分类号： G01R31/02 , H02H3/16 , H02H1/00 , H02H7/08 , G01R31/34
摘要： Implementations of fault detection circuits may include a first current transformer coupled to a second current transformer, a positive feedback circuit including the first current transformer, the second current transformer, a first switch, and one of a comparator, an amplifier, and an inverter. The circuit may also include a plurality of logic gates that may be coupled with the positive feedback circuit. The positive feedback circuit may be configured to oscillate upon detecting a ground neutral fault and to send a fault signal to the plurality of logic gates. The plurality of logic gates may be configured to analyze the fault signal and open the first switch. The plurality of logic gates may be further configured to identify whether the fault signal represents one of a true fault or a noise fault by analyzing the output of the positive feedback circuit after the first switch has been opened.

58. 发明申请

US20190105755A1 Hand-Held Machine Tool Comprising a Disconnector 审中-公开
公开(公告)号：US20190105755A1
公开(公告)日：2019-04-11
申请号：US16086838
申请日：2017-04-10
申请人： Festool GmbH
发明人： Nico Walker , Stefan Tulodziecki , Bernhard Kramer
IPC分类号： B24B49/10 , B24B47/12 , B23Q11/00 , H02H7/08 , H02K9/22
摘要： A hand-held machine tool, in particular a sanding machine, including a handle element for the user to grip and a processing head which has an electric drive motor for driving a tool holder provided for holding a processing tool, the hand-held machine tool having a power supply system for supplying power to the drive motor by means of a cable arrangement, via which the drive motor and the power supply system are interconnected. A protection circuit including at least one electric disconnector is arranged on the drive motor, in order to disconnect a connection between at least one electric cable of the cable arrangement and a phase of a field coil arrangement of the drive motor, which phase can be supplied with current via the cable.

59. 发明申请

US20190067932A1 ADJUSTABLE SPEED DRIVE WITH INTEGRATED SOLID-STATE CIRCUIT BREAKER AND METHOD OF OPERATION THEREOF 审中-公开
公开(公告)号：US20190067932A1
公开(公告)日：2019-02-28
申请号：US15692451
申请日：2017-08-31
申请人： Eaton Corporation
发明人： Huaqiang Li , Seth O'Brien , Thomas M. Ruchti
IPC分类号： H02H7/08 , H02M7/217 , H02M1/08 , H02H3/20
摘要： A power conversion circuit having a solid-state circuit breaker integrated therein is disclosed. With a disconnect switch between a utility source and the power conversion apparatus described for meeting UL489, the power conversion circuit includes an input connectable to an AC source, a rectifier circuit connected to the input to convert an AC power input to a DC power, and a DC link coupled to the rectifier circuit to receive the DC power therefrom. The rectifier circuit comprises a plurality of phase legs each including thereon an upper switching unit and a lower switching unit, wherein at least one of the upper and lower switching units on each phase leg comprises a bi-directional switching unit that selectively controls current and withstands voltage in both directions, so as to provide a circuit breaking capability that selectively interrupts current flow through the rectifier circuit, while maintaining original power conversion functionalities.

60. 发明授权

US10218168B2 Load side ground fault circuit interruption protection for fluid pump motor 有权
公开(公告)号：US10218168B2
公开(公告)日：2019-02-26
申请号：US15217025
申请日：2016-07-22
申请人： Thomas Michael Bangle
发明人： Thomas Michael Bangle
IPC分类号： H02H3/16 , H02H7/08 , H02H3/32
摘要： A method is disclosed providing ground fault circuit interruption protection for a pump motor which includes determining a current difference between at least two leads located on a load side of an electromechanical device, wherein the electromechanical device is configured to mechanically drive a road, and wherein the method further comprises interrupting a flow of current in response to the current difference exceeding a threshold current difference.

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