公开(公告)号：US11512885B2

公开(公告)日：2022-11-29

申请号：US16338974

申请日：2017-10-05

申请人： Johnson Controls Technology Company

发明人： David F. Saylor

IPC分类号： F25B49/02 ,  H02P5/74 ,  H01F30/04 ,  F04C28/08 ,  F04B49/20 ,  F04B41/00 ,  H02P27/04 ,  H02P1/58 ,  F04C28/02 ,  F04B49/06 ,  F04B49/02 ,  F04D25/06 ,  F04D15/00 ,  F04D27/00 ,  F04D27/02 ,  H02P27/06 ,  H02P27/00 ,  H02P1/54 ,  F04B35/04 ,  H02P27/16

摘要： Embodiments of the present disclosure relate to a refrigeration system that includes a compressor configured to circulate refrigerant along a refrigerant loop, a motor configured to drive the compressor, and a variable speed drive coupled to the motor and configured to supply power to the motor. The variable speed drive includes a primary winding of a step down transformer coupled to an alternating current (AC) power source, a first secondary winding of the step down transformer, where the first secondary winding is configured to supply power at a variable supplied voltage to the motor when the motor operates below a threshold voltage, and a second secondary winding of the step down transformer, where the second secondary winding is configured to supply power at a fixed supplied voltage when the motor operates at or above the threshold voltage.

公开(公告)号：US11196377B2

公开(公告)日：2021-12-07

申请号：US16767675

申请日：2018-11-28

申请人： HITACHI AUTOMOTIVE SYSTEMS, LTD.

发明人： Midori Takaoka ,  Junki Isobe ,  Kohei Myoen ,  Toshiyuki Ajima ,  Kazuaki Tobari ,  Yoshitaka Iwaji

IPC分类号： H02P23/00 ,  H02P25/00 ,  H02P27/00 ,  H02P27/08 ,  H02P21/20 ,  H02P21/22 ,  B62D5/04 ,  H02M7/537 ,  H02P21/06

摘要： In a motor drive device 120, a phase compensation amount calculation unit 110 calculates a phase compensation amount Δθ for compensating a voltage phase θv* when a control mode is switched in a control selection unit 90. The control selection unit 90 outputs the three-phase voltage command Vuvw* according to any one of the plurality of control modes based on the modulation factor Kh*, the voltage phase θv*, and the phase compensation amount Δθ. A PWM control unit 100 outputs gate signals Gun, Gup, Gvn, Gvp, Gwn, and Gwv based on the three-phase voltage command Vuvw* and a rotor position θd. The inverter 20 has a plurality of switching elements, and controls the plurality of switching elements based on gate signals Gun, Gup, Gvn, Gyp, Gwn, and Gwv to drive the AC motor 10.

公开(公告)号：US11152877B2

公开(公告)日：2021-10-19

申请号：US16803360

申请日：2020-02-27

申请人： The Swatch Group Research and Development Ltd

发明人： David Hoover

IPC分类号： H02P23/00 ,  H02P25/00 ,  H02P27/00 ,  H02P6/182 ,  H02P6/26 ,  H02P21/18

摘要： A method for determining an error in the angular position measurement of a timepiece motor having one or more phases, including: detecting (3) each instant (14) when the value of one of the back electromotive forces is zero, storing (4) a time corresponding to each detected instant, measuring (5) several time intervals between two instants (14) detected in the same revolution of the motor, comparing (6) the measured time intervals to reference time intervals to deduce the reference intervals to which they correspond, and determining (7) an angular position measurement error if the measured intervals do not correspond to the expected reference intervals. The invention also relates to a method for correcting the angular position measurement. Also, a determination and correction system for implementing the methods and a timepiece including such a system.

公开(公告)号：US11086386B2

公开(公告)日：2021-08-10

申请号：US16059924

申请日：2018-08-09

申请人： Renesas Electronics Corporation

发明人： Shunsuke Kogure ,  Takehiro Shimizu ,  Tatsuwo Nishino

IPC分类号： G06F1/3234 ,  G06F1/3296 ,  G06F1/3203 ,  H02P23/00 ,  H02P27/00

摘要： The power consumption of a circuit block outside a microcomputer and inside the same system is reduced. An electric power control system includes a first power supply circuit, a semiconductor device having a first circuit block operated by electric power supplied from the first power supply circuit, a state holding circuit that holds an operation state in the first circuit block according to the electric power, an electric power control circuit that controls the electric power supplied to the first circuit block according to the operation state, and a first terminal that outputs a first state signal corresponding to the operation state, a second power supply circuit that controls the supply of electric power according to the first state signal, and a second circuit block operated by the electric power supplied from the second power supply circuit.

公开(公告)号：US10770966B2

公开(公告)日：2020-09-08

申请号：US15487175

申请日：2017-04-13

申请人： Emerson Climate Technologies, Inc.

发明人： Joseph G. Marcinkiewicz ,  Kraig Bockhorst ,  Charles E. Green

IPC分类号： H02P27/00 ,  H02M7/48 ,  H02M1/42 ,  H02M1/08 ,  H02M1/14 ,  H02M1/32 ,  H02M1/44 ,  H02M7/06 ,  F25B49/02 ,  H02P27/06 ,  H02M5/458 ,  H02P5/74 ,  H02M7/5387 ,  H02M1/00

摘要： A PFC circuit is provided. A first bridge rectifier receives an AC voltage. A power converter includes a switch and receives an output of the first bridge rectifier, converts the output to a first DC voltage, and supplies the first DC voltage to a DC bus to power a compressor. A second bridge rectifier receives the AC voltage and bypasses at least one of the first bridge rectifier, a choke and a diode of the PFC circuit to provide a rectified AC voltage out of the second bridge rectifier to the DC bus to power the compressor. A control module controls operation of a driver to transition the switch between open and closed states to adjust a second DC voltage on the DC bus, where the second DC voltage, depending on the AC and second DC voltages, is based on the first DC voltage or the rectified AC voltage.

公开(公告)号：US10439541B2

公开(公告)日：2019-10-08

申请号：US14478337

申请日：2014-09-05

申请人： Bayerische Motoren Werke Aktiengesellschaft

发明人： Daniel Findeisen ,  Dominik Hecker ,  Matthias Gorka

IPC分类号： H02K3/12 ,  H02K11/33 ,  H02P9/24 ,  H02P27/00 ,  B60L15/00 ,  H02P25/22 ,  B60L50/51 ,  B60L58/20

摘要： A vehicle is provided with a multiphase electrical machine, a first onboard electrical sub-system having a first nominal DC voltage, and a second onboard electrical sub-system having a second nominal DC voltage. The electrical machine includes a rotor, a first stator system and a second stator system. The first onboard electrical sub-system includes a first inverter with a first link capacitor. The first stator system is associated with the first inverter. The second onboard electrical sub-system includes a second inverter with a second link capacitor. The second stator system is associated with the second inverter. The first stator system is configured in a star configuration. The second stator system is configured in a star configuration or in a delta configuration. A transfer circuit connects the star point of the first stator system to a higher potential of the second onboard electrical sub-system.

公开(公告)号：US10128789B2

公开(公告)日：2018-11-13

申请号：US14511366

申请日：2014-10-10

申请人： The Boeing Company

发明人： Brian J. Tillotson ,  Peng Zeng ,  Steven Richard Corey

IPC分类号： H02P31/00 ,  H02P27/04 ,  H02K3/20 ,  H02K3/47 ,  H02K11/00 ,  H04B5/00 ,  H02K3/28 ,  H02K37/02 ,  H02K37/08 ,  H02K11/35 ,  H02P27/00 ,  H02K19/10

摘要： A method and apparatus for operating an electric motor is presented. A transmit magnetic field is received at a group of receive coils having a group of axes oriented substantially parallel to magnetic field lines from a transmit coil and having a group of resonant frequencies. A resonant frequency in the group of resonant frequencies is different from other receive coils in the group of receive coils. A receive magnetic field is generated at a receive coil in the group of receive coils having the resonant frequency when the transmit magnetic field has a selected frequency matching the resonant frequency. The receive magnetic field attracts a rotor in the electric motor.

公开(公告)号：US10020768B2

公开(公告)日：2018-07-10

申请号：US14951075

申请日：2015-11-24

申请人： CAREL INDUSTRIES S.P.A.

发明人： Livio Bovo ,  Umberto Bianchini

IPC分类号： H02P27/00 ,  H02P27/04 ,  H02M3/158 ,  H02P6/00 ,  H02M1/10 ,  H02M1/36

CPC分类号： H02P27/04 ,  H02M1/10 ,  H02M1/36 ,  H02M3/1582 ,  H02M3/1584 ,  H02M2003/1586 ,  H02P6/04 ,  H02P6/28

摘要： A driving apparatus for an electric motor (11) comprising: an inverter (12) connectable to an electric motor (11) for supplying electrical current thereto; accumulator means (13) for providing a continuous electrical current, connected to the inverter (12) to provide electrical supply thereto; a transformer device (14) comprising first connection means (15) suitable to be coupled to a power grid to absorb power, and second connection means (16), suitable for coupling to the accumulator means (13). The transformer device (14) comprises: two buck converters (100, 200) connected in parallel to form an interleaved configuration; a boost converter (300) connected in series with respect to the buck converters; a control device connected to the converters (100) and configured to operate the converters so as to obtain a preset constant voltage at the ends of said second connection means.

公开(公告)号：US09935569B2

公开(公告)日：2018-04-03

申请号：US14894609

申请日：2013-09-30

申请人： Mitsubishi Electric Corporation

发明人： Akihiro Tsumura ,  Kenta Yuasa ,  Shinsaku Kusube

IPC分类号： H02P27/00 ,  H02P6/28 ,  H02M5/458 ,  H01L29/16 ,  H02M1/42 ,  H02M1/00

CPC分类号： H02P6/28 ,  H01L29/1608 ,  H02M1/4225 ,  H02M5/458 ,  H02M2001/007 ,  H02P2201/03 ,  H02P2201/09 ,  Y02B70/126

摘要： A motor drive control apparatus according to the present invention includes: a three-phase rectifier to rectify an AC voltage supplied from a three-phase AC source; a booster circuit including a reactor, a switching element, and a backflow preventing element, to boost a DC bus voltage supplied from the three-phase rectifier; a smoothing capacitor to smooth an output of the booster circuit; and an inverter circuit to convert the DC bus voltage smoothed by the smoothing capacitor into an AC voltage and supplying the AC voltage to a motor. During a starting operation of a boosting operation of the booster circuit or a stopping operation of the boosting operation thereof, a rotation speed of the motor is fixed.

公开(公告)号：US09914362B2

公开(公告)日：2018-03-13

申请号：US14139059

申请日：2013-12-23

申请人： Virginia Tech Intellectual Properties, Inc.

发明人： Khai Doan The Ngo ,  Hui Wang

IPC分类号： H02J7/00 ,  G05F1/70 ,  H02P23/00 ,  H02P25/00 ,  H02P27/00 ,  B60L11/18 ,  H02M1/14 ,  H02M1/42 ,  H02M7/5387

CPC分类号： B60L11/1803 ,  B60L11/1812 ,  B60L2210/14 ,  B60L2220/54 ,  B60L2240/526 ,  B60L2240/527 ,  B60L2240/529 ,  H02M1/14 ,  H02M1/4225 ,  H02M7/5387 ,  Y02T10/641 ,  Y02T10/7005 ,  Y02T10/7072 ,  Y02T10/7225 ,  Y02T90/127 ,  Y02T90/14

摘要： Switches of a switching circuit used to control operation of an electric motor such as in an electrically powered vehicle connect respective windings of the electric motor as a single phase inductor during battery charging. The inductor can then store inherent low frequency, second order ripple power and return that power to a load presented by a battery during battery charging to deliver substantially constant current. Storage of ripple power in the inductor allows the capacitance value, size, weight and cost of a filter capacitor of a power factor correction circuit providing input power to a battery charger to be reduced by an order of magnitude or more. Direction of current flow through the inductor is periodically reversed to avoid magnetizing the motor.