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11. 发明授权

US10677324B2 Variable speed accelerator 有权
公开(公告)号：US10677324B2
公开(公告)日：2020-06-09
申请号：US16078841
申请日：2016-02-26
申请人： MITSUBISHI HEAVY INDUSTRIES COMPRESSOR CORPORATION
发明人： Yoshiyuki Okamoto
IPC分类号： F16H3/72 , F16H61/02 , H02P5/46 , H02K7/116 , H02P3/24
摘要： The present invention provides a variable speed accelerator including: a constant-speed motor (51) having a constant-speed rotor (52) which is configured to rotate a constant-speed input shaft (Ac) of a transmission device (10) in a first direction; and a variable-speed motor (71) which has a variable-speed rotor (72) connected to a variable-speed input shaft (Av) of the transmission device (10), having a cylindrical shape centered on an axis with a shaft insertion hole (74) passing therethrough in the axial direction through which the constant-speed input shaft (Ac) inserted, and configured to rotate an output shaft (Ao) at a maximum rotation rate by rotating the variable-speed rotor (72) at a maximum rotation rate in a second direction opposite to the first direction, wherein the variable speed accelerator further includes an AC power source line (110) which connects the variable-speed motor (71) with an AC power source to allow the variable-speed motor (71) to rotate in the second direction; a rotation rate controller (100) which is provided on the AC power source line (110) to control a rotation rate of the variable-speed motor (71); a first switch (SW1) provided on the AC power source line (110); and a braking circuit (2) connected to portions locating between the variable-speed motor (71) and the rotation rate controller (100) with the first switch (SW1) on the AC power source line (110).

12. 发明申请

US20190322243A1 ISOLATING CIRCUIT FOR WIPER SYSTEM 审中-公开
公开(公告)号：US20190322243A1
公开(公告)日：2019-10-24
申请号：US15961664
申请日：2018-04-24
申请人： Caterpillar Inc.
发明人： Nithyanandam Nagendran , Richard Franklin Shults
IPC分类号： B60S1/08 , B60S1/38 , H02P5/46
摘要： A wiper system for a machine is provided. The wiper system includes a first motor configured to operate a first wiper and a second motor configured to operate a second wiper wherein the first motor and the second motor are connected in a parallel configuration. The wiper system further includes a power source which is in electrical connection with the first and the second motors for energizing each motor to move the respective wipers. The wiper system includes a switch configured to simultaneously operate the first motor and the second motor in one of a high speed mode, a low speed mode, or a park mode. The wiper system includes an isolating circuit configured to isolate the first motor from the power source and allow the second motor to run independent of the first motor when the switch is set in the park mode and speed of the first motor is different from speed of the second motor.

13. 发明申请

US20190288628A1 DRIVE SYSTEM 审中-公开
公开(公告)号：US20190288628A1
公开(公告)日：2019-09-19
申请号：US16432063
申请日：2019-06-05
申请人： DENSO CORPORATION
发明人： Hisaaki KOBAYASHI
IPC分类号： H02P27/06 , B60L50/51 , H02M7/5387 , H02M3/158 , H02M1/32 , H02M7/493 , B60L53/20 , H02P5/46 , G01R19/165
摘要： A drive system includes a first inverter electrically connected to a first AC rotating electrical machine, a second inverter electrically connected to first end sides of phase coils constituting a second AC rotating electrical machine, a boost converter, and a third inverter electrically connected to a second end sides of phase coils and drives the second AC rotating electrical machine by transmitting electrical power between the third inverter and a second DC power source different from a first DC power source. The drive system is configured such that the second DC power source and the first AC rotating electrical machine are connected via a single connecting route. The drive system includes a processor that changes a control state of at least one of the first to third inverters and the boost converter based on a state of at least one of the first to third inverters, the boost converter, and the first and second DC power sources.

14. 发明申请

US20190048978A1 VARIABLE SPEED ACCELERATOR 审中-公开
公开(公告)号：US20190048978A1
公开(公告)日：2019-02-14
申请号：US16078841
申请日：2016-02-26
申请人： MITSUBISHI HEAVY INDUSTRIES COMPRESSOR CORPORATION
发明人： Yoshiyuki Okamoto
IPC分类号： F16H3/72 , F16H61/02 , H02K7/116 , H02P5/46
摘要： The present invention provides a variable speed accelerator including: a constant-speed motor (51) having a constant-speed rotor (52) which is configured to rotate a constant-speed input shaft (Ac) of a transmission device (10) in a first direction; and a variable-speed motor (71) which has a variable-speed rotor (72) connected to a variable-speed input shaft (Av) of the transmission device (10), having a cylindrical shape centered on an axis with a shaft insertion hole (74) passing therethrough in the axial direction through which the constant-speed input shaft (Ac) inserted, and configured to rotate an output shaft (Ao) at a maximum rotation rate by rotating the variable-speed rotor (72) at a maximum rotation rate in a second direction opposite to the first direction, wherein the variable speed accelerator further includes an AC power source line (110) which connects the variable-speed motor (71) with an AC power source to allow the variable-speed motor (71) to rotate in the second direction; a rotation rate controller (100) which is provided on the AC power source line (110) to control a rotation rate of the variable-speed motor (71); a first switch (SW1) provided on the AC power source line (110); and a braking circuit (2) connected to portions locating between the variable-speed motor (71) and the rotation rate controller (100) with the first switch (SW1) on the AC power source line (110).

15. 发明授权

US10064302B2 Power inverter with balanced power flow for multiple electrical machines 有权
公开(公告)号：US10064302B2
公开(公告)日：2018-08-28
申请号：US15408173
申请日：2017-01-17
申请人： CATERPILLAR INC.
发明人： Jason Friedlund , Paul Thomas Schmidt , Vincent Arguelles , Saravanan Desigan , Edo Duheric , Todd Nakanishi
IPC分类号： H02P1/54 , H02P5/00 , H02P5/46 , H05K7/02 , H02P5/74 , H02M7/00 , H05K7/20 , H05K13/00 , H02M1/00
CPC分类号： H05K7/026 , H02M7/003 , H02M2001/008 , H02P5/74 , H05K7/1432 , H05K7/2039 , H05K7/209 , H05K13/00
摘要： A power inverter assembly provides a balanced power flow to each of a plurality of electrical machines. The power inverter assembly includes at least one heat sink having a top side and a bottom side, a plurality of pairs of power semiconductor modules mounted along the top and bottom sides of a heat sink for thermal exchange with the heat sink, and a plurality of gate driver boards configured to control the supply of DC power to each of the plurality of pairs of power semiconductor modules. A first pair of semiconductor modules is symmetrically arranged relative to second and third pairs such that the arrangement of the first, second, and third pairs of power semiconductor modules forms a geometric pattern with at least one of the second and third pairs at least partially overhanging the first pair.

16. 发明授权

US10023318B2 Motorized aircraft and method for determining output and number of electric motors in motorized aircraft 有权
公开(公告)号：US10023318B2
公开(公告)日：2018-07-17
申请号：US15314848
申请日：2015-06-30
申请人： Japan Aerospace Exploration Agency
发明人： Hiroshi Kobayashi , Akira Nishizawa
IPC分类号： B64D27/00 , B64D27/24 , B64D35/08 , H02P29/10 , H02P5/46
摘要： A motorized aircraft is controlled by a drive control means that rotationally drives a propulsion system propeller. The propulsion system propeller is driven by a plurality of electric motors. A comparison detection unit compares estimated propeller torque and estimated motor torque with each other and detects an abnormal state of an electric motor on the basis of the fact that a difference between the propeller torque and a multiple of the motor torque is above a predetermined value.

17. 发明申请

US20180080453A1 BACKPACK-TYPE BLOWER 审中-公开
公开(公告)号：US20180080453A1
公开(公告)日：2018-03-22
申请号：US15568062
申请日：2016-04-19
申请人： MAKITA CORPORATION
发明人： Hirokatsu YAMAMOTO , Yuki KAWAI , Makoto TAKAHASHI
IPC分类号： F04D25/08 , F04D25/06 , F04D27/00 , H02P5/46 , H02P6/04 , H02P6/18
CPC分类号： F04D25/08 , F04D25/0673 , F04D25/166 , F04D27/004 , F04D27/008 , H02P5/46 , H02P6/04 , H02P6/06 , H02P6/18 , H02P2006/045
摘要： A backpack-type blower according to one aspect of the present disclosure includes a plurality of fans, a plurality of DC power supplies and a backpack. The plurality of fans and the plurality of DC power supplies are mounted on the backpack. The backpack-type blower is configured to blow winds from the plurality of fans together.

18. 发明申请

US20180044863A1 HOPPER SPREADER WITH BACK EMF CONTROL AND HOPPER SYSTEM SPEED CONTROL 审中-公开
公开(公告)号：US20180044863A1
公开(公告)日：2018-02-15
申请号：US15237326
申请日：2016-08-15
申请人： Robert N. Gamble, II , Terry Wendorff
发明人： Robert N. Gamble, II , Terry Wendorff
IPC分类号： E01C19/20 , H02P5/46 , H02P27/08
CPC分类号： E01C19/20 , E01C19/203 , E01C2019/208 , H02P5/46 , H02P6/17 , H02P6/182 , H02P7/29 , H02P7/2913 , H02P27/08
摘要： A method of controlling a DC motor that includes the step of providing a pulse-width modulation (PWM) signal to the DC motor. The PWM signal provides a voltage to operate the DC motor. The method also includes the steps of measuring a voltage generated by the DC motor when the PWM signal is off. In more particular embodiments, the method includes measuring a current being supplied to the DC motor when the PWM signal is off. The method may further require determining a motor speed of the DC motor based on the measured voltage. The method further includes controlling the DC motor to maintain a relatively constant motor speed with varying loads on the DC motor.

19. 发明授权

US09866152B2 Motor control topology for airborne power generation and systems using same 有权
公开(公告)号：US09866152B2
公开(公告)日：2018-01-09
申请号：US15443465
申请日：2017-02-27
申请人： X Development LLC
发明人： Damon Vander Lind , Geoff Dolan , Corwin Hardham
IPC分类号： H02P5/46 , F03D7/02 , F03D9/25 , F03D9/32 , H02P29/024
CPC分类号： H02P5/46 , F03D1/02 , F03D7/028 , F03D9/25 , F03D9/32 , F05B2240/921 , F05B2240/923 , F05B2270/20 , F05B2270/30 , H02P29/024 , Y02E10/723 , Y02E10/728
摘要： In an example embodiment, a system includes a plurality of drive units coupled to a plurality of propellers. Each drive unit includes a single motor/generator and a single motor controller, and the plurality of drive units includes a first drive-unit pair and a second drive-unit pair. The system also includes a high-voltage bus connecting the motor controllers in the first drive-unit pair to a tether, a low-voltage bus connecting the motor controllers in the second drive-unit pair to the tether, and an intermediate-voltage bus connecting the motor controllers of the first drive-unit pair in series with the motor controllers of the second drive-unit pair. The motor controllers in the first drive-unit pair are connected in parallel via the high-voltage bus and the intermediate-voltage bus, and the motor controllers in the second drive-unit pair are connected in parallel via the intermediate-voltage bus and the low-voltage bus.

20. 发明授权

US09772619B2 Motor control device 有权
公开(公告)号：US09772619B2
公开(公告)日：2017-09-26
申请号：US15109592
申请日：2014-11-26
申请人： Mitsubishi Electric Corporation
发明人： Nobuhiro Shinohara , Hiroyuki Sekiguchi , Hidetoshi Ikeda , Tomoya Fujita , Kotaro Nagaoka
IPC分类号： G05B19/18 , G05B19/402 , G05B11/01 , H02P5/46
CPC分类号： G05B19/402 , G05B11/01 , G05B2219/41095 , H02P5/46
摘要： A motor control device includes: an X-axis detector; a Y-axis detector; a trajectory command generator that outputs a first position command and a second position command; an X-axis response correction unit that outputs a corrected position command; an X-axis position control unit that generates a first torque command; a Y-axis position control unit that generates a second torque command; a Y-axis measuring instrument that detects second machine end displacement; a Y-axis zero-point estimation unit that extracts characteristics of a zero point of a transfer function on the basis of the second torque command and the machine end displacement or on the basis of the second position command and the machine end displacement; and a response-correction-parameter determination unit that sets a response correction filter by using the characteristics of the zero point.

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