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公开(公告)号：US11177761B1
公开(公告)日：2021-11-16
申请号：US17015920
申请日：2020-09-09
Applicant: ABB Schweiz AG
Inventor： Md Ashfanoor Kabir , Bahareh Anvari , Jukka T. Jarvinen , Ghanshyam Shrestha
Abstract: An electric machine includes a rotor and a stator. The stator includes a stator core having a plurality of slots. The stator further includes a plurality of drive modules configured to collectively produce an aggregate rotating magnetic field. Each respective drive module includes a power supply configured to generate a respective poly-phase alternating current (AC) output and is connected to a plurality of respective conductor windings. Each respective conductor winding includes a plurality of respective conductors, each respective conductor configured to carry a respective phase of the respective poly-phase AC output. Each respective drive module is configured to generate a rotating, poly-phase, multipole magnetic field. The rotating, poly-phase, multipole magnetic field is a superimposition of a plurality of respective mono-phase, multiple magnetic fields being generated by a respective conductor of the respective conductor winding.
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公开(公告)号：US20210031892A1
公开(公告)日：2021-02-04
申请号：US16527465
申请日：2019-07-31
Applicant: ABB Schweiz AG
Inventor： Chenjie Lin , Colin E Tschida , Ghanshyam Shrestha , Steven Englebretson
IPC: B63H5/10
Abstract: A drive system is provided for propelling a ship through water. The drive system has two propellers. The propellers are coaxial so that one propeller engages the incoming water first, and the other propeller engages the water after it passes through the first propeller. The drive system has a stator that causes a first rotor to rotate. The first rotor is connected to, the first propeller to cause the first propeller to rotate. The first rotor also causes a second rotor to rotate. The second rotor is connected to the second propeller to cause the second propeller to rotate.
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公开(公告)号：US20210021182A1
公开(公告)日：2021-01-21
申请号：US16517262
申请日：2019-07-19
Applicant: ABB Schweiz AG
Inventor： Darren D. Tremelling , Colin Tschida , Ghanshyam Shrestha , Bahareh Anvari
Abstract: A rotating electrical machine of the double stator configuration includes a rotor shaped as a hollow cylinder disposed concentrically between an outer stator and an inner stator. The rotor can include plurality of radially spaced magnet cavities configured to receive permanent magnetic bars. To provide sufficient stiffness and rigidity, the rotor may be made from fiber composite material. To simplify construction, the rotor can be assembled from a plurality of rotor segments radially arranged about an axis line in which the magnet cavities are disposed.
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公开(公告)号：US10581357B2
公开(公告)日：2020-03-03
申请号：US15977286
申请日：2018-05-11
Applicant: ABB Schweiz AG
Inventor： Chenjie Lin , Ghanshyam Shrestha , Mehanathan Pathmanathan , Pedro Rodriguez , Pasi Paloheimo , Tuomas Janhunen , Susanna Bäckström-Andersson , Eino Silander
Abstract: Unique systems, methods, techniques and apparatuses of a rotating DC power supply are disclosed. One exemplary embodiment includes a first and second DC bus rail, a first and second leg, and a discharge resistor. The first leg includes a first semiconductor device and a second semiconductor device coupled in series at a first midpoint connection, the first semiconductor device being coupled to a first point on the first DC bus rail and the first midpoint connection being coupled to a field winding. The second leg includes a third semiconductor device and a fourth semiconductor device coupled in series at a second midpoint connection, the third semiconductor device being coupled to a second point on the first DC bus rail and the second midpoint connection being coupled to the field winding. The discharge resistor is operatively coupled to the first DC bus rail between the first point and the second point.
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公开(公告)号：US10177633B2
公开(公告)日：2019-01-08
申请号：US14581927
申请日：2014-12-23
Applicant: ABB Schweiz AG
Inventor： Ghanshyam Shrestha , Zhiguo Pan , Mario Schweizer , Darren Dale Tremelling , Waqas Mahmood Arshad
IPC: H02K11/00 , H02K21/14 , H02K17/16 , H02K3/12 , H02K3/28 , H02K9/06 , H02K11/04 , H02K3/52 , H02K11/33 , H02K1/14 , H02K5/22
Abstract: The subject matter described herein includes a multiphase fractional slot concentrated winding machine. One such machine includes a machine module including a rotor and a stator. The stator includes a plurality of radially extending teeth. Each tooth is individually wound with a coil. The machine further includes a multiphase series converter circuit physically connected to an end of the machine module to energize the coils for multiphase operation.
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Patent Agency Ranking
公开(公告)号：US09876456B2
公开(公告)日：2018-01-23
申请号：US15170420
申请日：2016-06-01
Applicant: ABB Schweiz AG
Inventor： Zhiguo Pan , Mario Schweizer , Ghanshyam Shrestha
Abstract: A bridge converter for a multi-phase electrical machine has a number of bridge cells connected in series. Each bridge cell has a controller. The bridge converter includes a sensor operative to provide a commutation signal to at least one controller. A multi-phase electrical machine has a plurality of stator windings and a bridge converter having a number of bridge cells connected in series. Each bridge cell has a controller. The bridge converter includes a sensor operative to provide a commutation signal to at least one controller.
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公开(公告)号：US11070116B2
公开(公告)日：2021-07-20
申请号：US16517262
申请日：2019-07-19
Applicant: ABB Schweiz AG
Inventor： Darren D. Tremelling , Colin Tschida , Ghanshyam Shrestha , Bahareh Anvari
Abstract: A rotating electrical machine of the double stator configuration includes a rotor shaped as a hollow cylinder disposed concentrically between an outer stator and an inner stator. The rotor can include plurality of radially spaced magnet cavities configured to receive permanent magnetic bars. To provide sufficient stiffness and rigidity, the rotor may be made from fiber composite material. To simplify construction, the rotor can be assembled from a plurality of rotor segments radially arranged about an axis line in which the magnet cavities are disposed.
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公开(公告)号：US20190207484A1
公开(公告)日：2019-07-04
申请号：US15858043
申请日：2017-12-29
Applicant: ABB Schweiz AG
Inventor： Ghanshyam Shrestha , Chenjie Lin , Mehanathan Pathmanathan , Pedro Rodriguez
IPC: H02K11/042 , H02K3/20 , H02K21/04
Abstract: Unique systems, methods, techniques and apparatuses of an exciterless synchronous generator are disclosed. One exemplary embodiment is an exciterless synchronous generator comprising a stator, a rotor, and a startup excitation system. The stator includes a set of stator windings. The rotor includes an energy harvest winding, a DC power supply including a DC bus and coupled to the energy harvest winding, and a field winding coupled to the DC power supply. The startup excitation system comprises one of a magnetic field generation system structured to generate a magnetic field received by the energy harvest winding in response to a rotation of the rotor, wherein the magnetic field is converted to DC power with the DC power supply and transmitted to the field winding; or a rotor DC power source including and diode coupled in series across the DC bus.
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公开(公告)号：US10097123B2
公开(公告)日：2018-10-09
申请号：US15726443
申请日：2017-10-06
Applicant: ABB Schweiz AG
Inventor： Ghanshyam Shrestha , Darren Tremeling , Waqas Arshad , Wen Ouyang , Jan Westerlund
IPC: H02P9/30 , H02K3/28 , H02K3/20 , H02K11/042 , H02K19/12
Abstract: A synchronous machine and related systems include a stator and rotor separated by an air gap. The rotor includes a rotating DC power supply coupled to exciter windings disposed adjacent the air gap. Power from air gap harmonics, including air gap slot harmonics induce current in the exciter windings, which is rectified and supplied to the rotor field windings. In operation, a desired current level in the rotor field windings can be achieved through control of the DC power supply or superposition of harmonics into the stator winding current which induces the prescribed current in exciter windings.
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公开(公告)号：US20180166937A1
公开(公告)日：2018-06-14
申请号：US15379374
申请日：2016-12-14
Applicant: ABB Schweiz AG
Inventor： Chenjie Lin , Ghanshyam Shrestha , Matthew Henriksen
IPC: H02K3/16 , H02K11/042 , H02K1/24
CPC classification number: H02K3/16 , H02K1/246 , H02K11/042 , Y02E10/725
Abstract: An assembly that can enhance the power factor of synchronous reluctance (SynRel) machines. The assembly can include one or more pickup coils that are at least proximally adjacent to an outer periphery of a rotor that are structured to harvest energy in an air gap between the rotor and a stator. The harvested energy can be supplied to a rectifier that is electrically coupled to the pickup coils, and which can convert the harvested energy into DC excitation current. The DC excitation current can be provided to one or more DC field windings that extend through the rotor, such as, for example, through flux barriers in the rotor. The flow of the DC excitation current through the DC field windings can generate a flux that can be put in a rotor axis to enhance the power factor and torque rating of the SynRel machine.
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