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1. 发明授权

US11509254B2 Method for detecting a motor phase fault of a motor arrangement and drive circuit for driving an electronically commutated motor 有权
公开(公告)号：US11509254B2
公开(公告)日：2022-11-22
申请号：US16537808
申请日：2019-08-12
申请人： DIEHL AKO STIFTUNG & CO. KG
发明人： Martin Weinmann , Andreas Schmid , Sebastian Tinius
IPC分类号： G05F1/70 , H02P23/00 , H02P25/00 , H02P29/024 , H02P23/26 , H02P27/06
摘要： In a method for detecting a motor phase fault of a motor arrangement, the motor phases of which are connected to a drive circuit having a DC voltage intermediate circuit and an inverter. A motor phase voltage at at least one of the motor phases with respect to a reference potential is captured while the inverter is switched off; and a voltage profile of the captured motor phase voltage is used to determine whether there is a motor phase fault on one of the motor phases of the motor arrangement.

2. 发明授权

US11362603B2 Capacitance reductions 有权
公开(公告)号：US11362603B2
公开(公告)日：2022-06-14
申请号：US16762848
申请日：2018-11-07
申请人： ebm-papst Mulfingen GmbH & Co. KG
发明人： Ralph Wystup
IPC分类号： H02P6/10 , H02P23/26 , H02M1/12 , H02M1/42
摘要： The disclosure relates to a method for reducing the torque ripple and noise evolution in an EC motor with single-phase feed by buffer-storing electrical energy in the EC motor, which is embodied with a power factor correction circuit (PFC) having a capacitor (Cz) at the power supply system input for a specific power supply system AC voltage UN, wherein the capacitance of the capacitor is dimensioned such that when the power supply system AC voltage UN is applied, a pulsating DC voltage is generated in a link circuit (Z), wherein the pulsating electrical energy generated as a result is stored by means of a primary regulation of the id current component as magnetic energy in the EC motor at least for a predefined time period.

3. 发明授权

US11271508B2 Power conversion device, motor driving system, and control method 有权
公开(公告)号：US11271508B2
公开(公告)日：2022-03-08
申请号：US16975880
申请日：2019-02-15
申请人： TOSHIBA MITSUBISHI-ELECTRIC INDUSTRIAL SYSTEMS CORPORATION
发明人： Naoto Niimura , Teruo Yoshino
IPC分类号： H02P27/08 , H02P23/26
摘要： In a power converter, a first single-phase AC conversion unit, which is connected to a first line of a first phase and a second line of a second phase of a first three-phase AC, a second single-phase AC conversion unit, which is connected to the second line of the second phase and a third line of a third phase of the first three-phase AC, and a third single-phase AC conversion unit, which is connected to the third line of the third phase and the first line of the first phase of the first three-phase AC, form a delta-connected load for an AC power supply system. At least the first single-phase AC conversion unit, the second single-phase AC conversion unit, and the third single-phase AC conversion unit form a first set in which respective output terminals are connected in series to one another, and the first set, and a second set and a third set, which are different from the first set, form each phase of a star connected power supply. A reactive power control unit controls a reactive power of a converter of each single-phase AC conversion unit based on a reactive power command value generated based on an acquired value related to an active power.

4. 发明申请

US20220021273A1 HEATSINK CLAMP FOR MULTIPLE ELECTRONIC COMPONENTS 有权
公开(公告)号：US20220021273A1
公开(公告)日：2022-01-20
申请号：US17492332
申请日：2021-10-01
申请人： Nidec Motor Corporation
发明人： James L. Skinner , Richard A. Belley , Michael L. Largent
IPC分类号： H02K9/06 , F04D29/70 , H02K5/15 , H02K7/08 , H02K9/22 , H02K11/33 , H02P23/26 , H02K21/16
摘要： An electric motor assembly includes a stator, a rotor, a motor housing, a rotatable shaft, a radial fan, and an air scoop. The motor housing at least partly houses the stator and rotor and presents an exterior motor surface. The rotatable shaft is associated with the rotor for rotational movement therewith, with the rotatable shaft extending along a rotational axis. The radial fan is mounted on the rotatable shaft exteriorly of the motor housing and is rotatable with the shaft to direct airflow in a radially outward direction. The air scoop extends radially outwardly relative to the radial fan and axially to receive radial airflow from the radial fan and turn the airflow axially to flow along the exterior motor surface. The air scoop includes spaced apart axially extending airflow vanes to guide the airflow as the airflow is turned axially.

5. 发明申请

US20210320605A1 Systems For Networks Of Efficiently Powered Enhanced Reverse-Winding Induction Motor 有权
公开(公告)号：US20210320605A1
公开(公告)日：2021-10-14
申请号：US17327454
申请日：2021-05-21
申请人： Adventech, LLC
发明人： Gerald Goche
IPC分类号： H02P23/26 , H02P1/54 , H02P23/24 , H02P23/20
摘要： Enhanced network power factor corrective designs are presented that can use corrective devices that achieve long-term, operationally stable mechanical work. Embodiments can utilize reverse-winding induction motor designs with engineerable parameters and configurations for the reverse winding (13) in systems and through methods where an inductive motor (1) can present a current that leads voltage and a leading power factor (16) to correct other existing induction motors (8) in an initial network (9) or be optimized for a particular application. Designs also present a power factor correction that can present a variable correction without altering the character or physical capacitive value of an electrical correction component. Individual induction motors that have leading current and a leading power factor (16) can be provided to improve reverse winding induction motors. Progressive start controls (23) can also be used in a manner that limits inrush current to operational levels with passive current establishment control where reverse winding (13) effects can be used and perhaps even delayed to passively limit and even effect a current decrease while rotational acceleration continues after initial start transition.

6. 发明授权

US11056995B2 Synchronous motor drive system and synchronous motor drive method 有权
公开(公告)号：US11056995B2
公开(公告)日：2021-07-06
申请号：US16857023
申请日：2020-04-23
申请人： SYSTEM HOMES COMPANY, LTD.
发明人： Hozo Yoshino
IPC分类号： H02P23/30 , H02P23/26 , H02P27/04 , H02P27/08
摘要： The present disclosure is constructed on the prior art inverter architecture, a pulse code width modulation (PCWM). This is an open loop motor control system without sensing its rotor position. The present disclosure employs a closed loop method to track the optimum efficiency motor operating point directly. A bench load test is conducted to gather information for an AI type control, which includes both load angle vs. voltage command charts and power factor vs. voltage command charts, with load levels as parameters for certain frequency command ranges. This way, the optimum efficiency motor operating points are generated a priori. The AI type control is mechanized to track the optimum efficiency motor operating points.

7. 发明授权

US11005399B2 AC power adapter having a switchable capacitor 有权
公开(公告)号：US11005399B2
公开(公告)日：2021-05-11
申请号：US16591931
申请日：2019-10-03
申请人： Black & Decker Inc.
发明人： Pradeep M. Pant
IPC分类号： H02P6/28 , H02K7/14 , H02M7/219 , H02M7/12 , H02J7/00 , H02J7/02 , H02J7/04 , H02P23/26 , H02P6/08 , H02P29/024 , H01M50/20 , H02P29/032 , H02P25/14 , H02P27/08
摘要： A power adapter is provided to supply electric power from an alternating current from an alternating current (AC) power supply to a powered apparatus. It includes a switchable capacitor circuit housed within a housing and including: a first switch path associated with a positive half cycle of the alternating current and a second switch path associated with a negative half cycle of the alternating current, both coupled across the AC power supply. Each switch path includes a switchable capacitor in series with a switch.

8. 发明授权

US10978979B2 Power factor adjustment method and apparatus through the phase control in a transformer circuit 有权
公开(公告)号：US10978979B2
公开(公告)日：2021-04-13
申请号：US15733230
申请日：2017-12-12
申请人： PHASETOWN, LLC
发明人： Won Don Lee , Hijung Chai , Aquila Hwan Lee
IPC分类号： H02P23/26 , H01F27/24 , H01F27/28 , H02M1/42
摘要： In this work, it is shown for the first time that the power and the impedance in a transformer circuit depend on the phase of the flux, hence the phase of the current. There is a phase change when the flux travels the magnetic core, and formulas for the effect of the phase change in the power and the impedance are derived. Therefore, the power factor can be adjusted so that the power is delivered more at the load than that, at the primary supplied by the source.

9. 发明授权

US10903770B1 Enhanced reverse-winding induction motor designs, systems, and methods 有权
公开(公告)号：US10903770B1
公开(公告)日：2021-01-26
申请号：US16772721
申请日：2020-01-14
申请人： Adventech, LLC
发明人： Gerald Goche
IPC分类号： H02P23/00 , H02P23/26 , H02P1/54 , H02P23/24 , H02P23/20
摘要： Enhanced network power factor corrective designs are presented that can use corrective devices that achieve long-term, operationally stable mechanical work. Embodiments can utilize reverse-winding induction motor designs with engineerable parameters and configurations for the reverse winding (13) in systems and through methods where an inductive motor (1) can present a current that leads voltage and a leading power factor (16) to correct other existing induction motors (8) in an initial network (9) or be optimized for a particular application. Designs also present a power factor correction that can present a variable correction without altering the character or physical capacitive value of an electrical correction component. Individual induction motors that have leading current and a leading power factor (16) can be provided to improve reverse winding induction motors. Progressive start controls (23) can also be used in a manner that limits inrush current to operational levels with passive current establishment control where reverse winding (13) effects can be used and perhaps even delayed to passively limit and even effect a current decrease while rotational acceleration continues after initial start transition.

10. 发明申请

US20200336094A1 POWER FACTOR ADJUSTMENT METHOD AND APPARATUS THROUGH THE PHASE CONTROL IN A TRANSFORMER CIRCUIT 审中-公开
公开(公告)号：US20200336094A1
公开(公告)日：2020-10-22
申请号：US15733230
申请日：2017-12-12
申请人： PHASETOWN, LLC
发明人： Won Don LEE , Hijung CHAI , Aquila Hwan LEE
IPC分类号： H02P23/26 , H02M1/42 , H01F27/24 , H01F27/28
摘要： In this work, it is shown for the first time that the power and the impedance in a transformer circuit depend on the phase of the flux, hence the phase of the current. There is a phase change when the flux travels the magnetic core, and formulas for the effect of the phase change in the power and the impedance are derived. Therefore, the power factor can be adjusted so that the power is delivered more at the load than that, at the primary supplied by the source.

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