专利快速检索-快速检索全球专利，免费商用专利数据库-IPRDB

81. 发明公开

EP4173756A1 POWER TOOL 审中-实审
公开(公告)号：EP4173756A1
公开(公告)日：2023-05-03
申请号：EP22191610.9
申请日：2022-08-23
申请人： Nanjing Chervon Industry Co., Ltd.
发明人： LI, Guang , XU, Yanqing , WU, Yongkang
IPC分类号： B25F5/00 , B25B23/147 , H02P29/00
摘要： A power tool comprising:
a housing;
an electric motor (111) disposed in the housing;
a driver circuit (22) electrically connected to the electric motor to drive the electric motor to operate;
a speed detection device (24) configured to acquire a rotational speed of the electric motor; and
a control device (23) connected to the speed detection device and the driver circuit,
wherein the control device outputs a control signal to the driver circuit to control rotation of the electric motor;
wherein the control device is configured to acquire the rotational speed of the electric motor when the electric motor is in a start-up stage, obtain a rotational speed variation of the electric motor within a preset time based on the rotational speed of the electric motor, and turn off the electric motor when the rotational speed variation is less than a rotational speed variation threshold.

82. 发明授权

EP3402067B1 MOTOR DRIVE DEVICE 有权
公开(公告)号：EP3402067B1
公开(公告)日：2023-04-26
申请号：EP17735969.2
申请日：2017-01-05
发明人： MASUDA, Yui
IPC分类号： H02P29/40 , B60L15/20 , H02P23/04 , H02P21/05 , B60W30/20

83. 发明公开

EP4167468A1 CONTROL METHOD AND APPARATUS FOR PERMANENT-MAGNET SYNCHRONOUS ELECTRIC MOTOR, AND PERMANENT-MAGNET SYNCHRONOUS ELECTRIC MOTOR CONTROL SYSTEM 审中-实审转让
公开(公告)号：EP4167468A1
公开(公告)日：2023-04-19
申请号：EP21908081.9
申请日：2021-08-26
申请人： Contemporary Amperex Technology Co., Limited
发明人： ZHENG, Xiong , PAN, Xianxi , LUO, Yu , DAN, Zhimin
IPC分类号： H02P21/22 , H02P29/50
摘要： This application provides a permanent-magnet synchronous machine control method and device, and a permanent-magnet synchronous machine control system. The method includes: obtaining a d -axis current i d and a q -axis current i q in a permanent-magnet synchronous machine control loop at a current moment; obtaining a fifth-order harmonic current i d 5 th and a seventh-order harmonic current i d 7 th in the d -axis current i d in the permanent-magnet synchronous machine control loop at the current moment, and a fifth-order harmonic current i q 5 th and a seventh-order harmonic current i q 7 th in the q -axis current i q in the permanent-magnet synchronous machine loop at the current moment; determining a d -axis current i d k + 1 at a next moment in each switch state; determining a q -axis current i q k + 1 at the next moment in each switch state based on the first current i d k , the second current i q k , and the second voltage in each switch state; and determining a control policy of the permanent-magnet synchronous machine based on the d -axis current i d k + 1 at the next moment in each switch state and the q -axis current i q k + 1 at the next moment in each switch state. In this way, the existing PI controller is cancelled and the complicated PI parameter adjustment is avoided.

84. 发明公开

EP4165772A1 SETPOINT IDENTIFICATION ON RETROFIT ELECTRIC ACTUATION 审中-实审
公开(公告)号：EP4165772A1
公开(公告)日：2023-04-19
申请号：EP21737921.3
申请日：2021-06-14
申请人： Woodward, Inc.
发明人： MOLENAAR, Gregory A.
IPC分类号： H02P6/08 , H02P6/16 , H02P6/28 , H02P29/40

85. 发明授权

EP3699566B1 VORRICHTUNG UND VERFAHREN ZUR ÜBERWACHUNG EINER TEMPERATUR EINER ELEKTRISCHEN MASCHINE 有权
公开(公告)号：EP3699566B1
公开(公告)日：2023-04-19
申请号：EP20156842.5
申请日：2020-02-12
发明人： Fischer, Arne
IPC分类号： G01K7/42 , G01K5/00 , H02P29/60 , G01K3/00

86. 发明公开

EP4160902A1 FAULT TOLERANT CONVERTER TOPOLOGY 审中-实审
公开(公告)号：EP4160902A1
公开(公告)日：2023-04-05
申请号：EP21275139.0
申请日：2021-09-30
申请人： Goodrich Actuation Systems Limited
发明人： RASHED MOHAMED ALABASSY, Mohamed Elsayed , BENAROUS, Mamaar
IPC分类号： H02M7/797 , H02M1/00 , H02M1/32 , H02P25/22 , H02P29/024 , H02P29/028 , H02M7/06
摘要： The present invention provides a power inverter topology (400) for converting a DC input to one or more phases of AC output (412), and methods for operating the same. The power inverter comprises a switching circuit, an input circuit and a freewheeling diode bridge arrangement. The switching circuit comprises switch arms extending between the upper and lower branches of the switching circuit. The input circuit comprises upper and lower isolating switches (402) that can be selectively operated to respectively isolate the upper and/or lower branches of the switching circuit.

87. 发明公开

EP4154396A1 A MISSILE SERVO ACTUATION SYSTEM AND METHOD OF CONTROLLING A SERVO ACTUATION SYSTEM IN A MISSILE 审中-实审
公开(公告)号：EP4154396A1
公开(公告)日：2023-03-29
申请号：EP21727207.9
申请日：2021-05-17
申请人： MBDA UK Limited
发明人： LYNN, David, Mark
IPC分类号： H02P29/60

88. 发明公开

EP4152595A1 FAN CONTROL SYSTEM, FAN SYSTEM, ACTIVE INGREDIENT GENERATION SYSTEM, FAN CONTROL METHOD, AND PROGRAM 审中-实审
公开(公告)号：EP4152595A1
公开(公告)日：2023-03-22
申请号：EP21804304.0
申请日：2021-02-25
申请人： Panasonic Intellectual Property Management Co., Ltd.
发明人： KAWASAKI, Motoji , HIRAI, Kouiti , ITO, Mikio , URATANI, Yutaka
IPC分类号： H02P6/20 , H02P29/20 , H02P29/68
摘要： A fan control system according to the present disclosure includes a controller that selects a control mode from a plurality of control modes including a first mode and a second mode. The first mode is a control mode in which an electric signal is given to fan motor so that fan motor operates at the first rotation speed. The second mode is a control mode in which an electric signal is given to fan motor so that fan motor operates at a second rotation speed lower than the first rotation speed. The controller has a function of selecting the second mode in a period after the start of the fan motor and before the selection of the first mode.

89. 发明公开

EP4148978A1 CONTROL METHOD FOR THERMAL OVERLOAD PROTECTION OF ASYNCHRONOUS MOTOR 审中-实审
公开(公告)号：EP4148978A1
公开(公告)日：2023-03-15
申请号：EP22306336.3
申请日：2022-09-09
申请人： Schneider Electric Industries SAS
发明人： XING, Jinlei
IPC分类号： H02P29/66 , H02P29/60 , H02P23/14
摘要： The present disclosure relates to a control method for thermal overload protection of an asynchronous motor, wherein the asynchronous motor includes a rotor and a stator, and the control method includes: determining a current state of the asynchronous motor; determining a thermal level of the rotor according to a first formula based on the fact that the asynchronous is in a starting state; determining the thermal level of the rotor according to a second formula different from the first formula based on the fact that the asynchronous motor is in a running state; determining the thermal level of the rotor according to a third formula different from the first formula and the second formula based on the fact that the asynchronous motor is in a shutdown state; comparing the thermal level of the rotor with a first predetermined threshold value and a second predetermined threshold value greater than the first predetermined threshold value, and if the thermal level of the rotor is greater than the first predetermined threshold value and less than the second predetermined threshold value, issuing an overheat alarm; if the thermal level of the rotor is greater than a second predetermined threshold, shutting down the asynchronous motor.

90. 发明公开

EP4143964A1 MOTOR CONTROL DEVICE AND MOTOR CONTROL METHOD 有权
公开(公告)号：EP4143964A1
公开(公告)日：2023-03-08
申请号：EP20731192.9
申请日：2020-04-27
申请人： JTEKT Corporation , JTEKT EUROPE S.A.S.
发明人： FUJITA, Yuji , KAWAMURA, Hiroshi , SLAMA, Tahar , HANSER, Baptiste , JANEL, Laurent
IPC分类号： H02P21/20 , H02P6/10 , B62D5/04 , H02P29/028

你已经成功收藏专利！

检索式保存成功!

IPRDB

热门服务

关于我们

友情链接

联系方式