公开(公告)号：EP0751610A1

公开(公告)日：1997-01-02

申请号：EP95110145.0

申请日：1995-06-29

Applicant: HITACHI KOKI CO., LTD.

Inventor： Inaniwa, Masahiro ,  Kido, Nobuharu ,  Fujimaki, Takahiro ,  Watanabe, Shinji ,  Matsufuji, Noriyasu ,  Tobita, Yoshinori

IPC: H02M5/458

CPC classification number: H02M5/4585 ,  H02P23/07 ,  H02P2201/03 ,  H02P2201/07

Abstract: A power control apparatus for controlling power supplied to an electric motor rotating a rotor employed in a centrifugal machine is provided. The power control apparatus includes first and second inverters (22,26) and a smoothing capacitor (24) disposed between the first and second inverters. In a motor power mode, the first inverter (22) charges the smoothing capacitor with power supplied by an AC power supply, while the second inverter charges, in a motor braking mode, the smoothing capacitor with power regenerated by the motor during a breaking operation for returning the regenerated power back to the AC power supply through the first inverter. A reactor (23) is arranged between the AC power and the first inverter for reducing harmonic components in the current supplied from or back to the AC power supply.

Abstract translation: 提供一种电力控制装置，用于控制向离心机中使用的转子旋转的电动机的供给。 功率控制装置包括设置在第一和第二逆变器之间的第一和第二反相器（22,26）和平滑电容器（24）。 在电动机功率模式中，第一逆变器（22）利用交流电源供给的电力对平滑电容器充电，而第二变换器在电动机制动模式下，在断路操作期间由电动机再生的电力对平滑电容器充电 用于通过第一逆变器将再生电力返回到AC电源。 在AC电力和第一逆变器之间布置有电抗器（23），用于减少由交流电源供给的电流中的谐波分量。

公开(公告)号：EP0234293B1

公开(公告)日：1990-11-14

申请号：EP87100947.8

申请日：1987-01-23

Applicant: Kabushiki Kaisha Meidensha

Inventor： Matsuse, Koki ,  Kubota, Hisao

IPC: H02M5/45

CPC classification number: H02P27/06 ,  H02J3/1892 ,  H02M7/5152 ,  H02P2201/03

公开(公告)号：EP0153751A2

公开(公告)日：1985-09-04

申请号：EP85102253.3

申请日：1985-02-28

Applicant: KABUSHIKI KAISHA TOSHIBA

Inventor： Saito, Suzuo c/o Patent Division ,  Mose, Tadao c/o Patent Division

IPC: H02P1/30 ,  H02P7/63 ,  H02M5/451

CPC classification number: H02P27/06 ,  H02M5/4505 ,  H02M7/757 ,  H02P1/30 ,  H02P2201/03

Abstract: A power converter for starting an AC induction motor includes a frequency detector (41) which compares the frequency of an AC output of the converter with a predetermined frequency and generates a detection signal (SX) if the AC output frequency is lower than the predetermined frequency; a current controller (18, 26-29, 42-45) which controls the power converter such that an AC output current (lac) supplied to the motor (16) is determined in accordance with a given current reference (lref = S2) if the detection signal (SX) is generated; and a voltage controller (17, 18, 21-29, 31, 32, 43, 45) which controls the power converter so that an AC output voltage (Vac) applied to the motor (16) is regulated in accordance with a given voltage reference (Eref = E22) if the detection signal (SX) disappears.

公开(公告)号：EP0039281B1

公开(公告)日：1984-11-14

申请号：EP81400637.5

申请日：1981-04-22

Applicant: JEUMONT-SCHNEIDER Société anonyme dite:

Inventor： Wiart, Albert

IPC: H02M5/45 ,  H02P7/62

CPC classification number: H02P27/06 ,  H02M5/4505 ,  H02P2201/03

公开(公告)号：US11976697B2

公开(公告)日：2024-05-07

申请号：US17337204

申请日：2021-06-02

Applicant: Dana Belgium N.V.

Inventor： Joachim Druant ,  Thomas Vyncke

IPC: H02P3/00 ,  F16D48/06 ,  H02P6/00 ,  H02P7/03

CPC classification number: F16D48/064 ,  H02P7/04 ,  H02P2201/03

Abstract: Methods and systems for operating a driveline disconnect clutch actuator are provided. In one example, the driveline disconnect clutch actuator may be supplied with electric power to activate and deactivate a driveline disconnect clutch when electric power is available via a first power source. The driveline disconnect clutch actuator may be supplied with electric power to open the driveline disconnect clutch when output from the first driveline disconnect clutch is unavailable.

公开(公告)号：US11940194B2

公开(公告)日：2024-03-26

申请号：US17173679

申请日：2021-02-11

Applicant: LG Electronics Inc.

Inventor： Jinho Cho ,  Taeyoung Park ,  Jongwon Heo

IPC: F25B49/02 ,  H02M1/084 ,  H02M3/156 ,  H02M5/458 ,  H02P5/46 ,  H02P27/04 ,  H02P27/08

CPC classification number: F25B49/025 ,  F25B49/022 ,  H02M1/084 ,  H02M3/156 ,  H02M5/458 ,  H02P5/46 ,  H02P27/045 ,  H02P27/08 ,  F25B2600/021 ,  F25B2600/024 ,  F25B2600/11 ,  F25B2700/151 ,  F25B2700/171 ,  H02P2201/03 ,  H02P2201/07 ,  H02P2201/11

Abstract: A power converting apparatus includes: a rectifying unit configured to rectify an input AC power, a buck converter that is configured to step down a voltage of the rectified power and that is configured to output DC power having the step down voltage, a first inverter that is connected to an output terminal of the buck converter and that is configured to convert the DC power into AC power to drive a first motor, a second inverter that is connected to the output terminal of the buck converter, that is disposed in parallel to the first inverter, and that is configured to convert the DC power into AC power to drive a second motor, and a converter controller configured to control an output voltage of the DC power of the buck converter.

公开(公告)号：US20230336101A1

公开(公告)日：2023-10-19

申请号：US18025332

申请日：2020-09-08

Applicant: Vestel Elektronik Sanayi ve Ticaret A.S.

Inventor： Seyit YILDIRIM

IPC: H02P21/00 ,  H02P21/22

CPC classification number: H02P21/0089 ,  H02P21/22 ,  H02P2201/03 ,  H02P2207/05

Abstract: There is provided a drive circuit (300) for a permanent magnet motor (311). The drive circuit (300) has a rectifier circuit constructed and arranged to convert a source alternating current (305) to a direct current, and a film capacitor (303) arranged in a path parallel with the rectifier circuit (307). The drive circuit (300) also has an inverter circuit (309) constructed and arranged to convert the direct current into a three-phase alternating current to drive the permanent magnet motor (311). Furthermore, the drive circuit (300) has a control circuit connected to the source alternating current (305) and the inverter circuit (309), the control circuit being constructed and arranged to modulate a d-axis current reference with the square of a cosine wave which is synchronised with a voltage angle of the source alternating current (305), wherein the modified d-axis current reference is provided as an input to the inverter circuit (309).

公开(公告)号：US20230318507A1

公开(公告)日：2023-10-05

申请号：US18192766

申请日：2023-03-30

Applicant: SEIKO EPSON CORPORATION

Inventor： Junpei NAKAYAMA

IPC: H02P27/08 ,  H02P23/26

CPC classification number: H02P27/08 ,  H02P23/26 ,  H02P2201/03 ,  H02P2201/11 ,  H02P2201/15

Abstract: A control apparatus includes a drive circuit unit to which regenerative electric power is input, a discharge resistance unit parallel-coupled to the drive circuit unit, to which the regenerative electric power is input from the drive circuit unit, and, when a voltage value of the regenerative electric power exceeds a threshold value, consuming electric power, a second converter circuit unit parallel-coupled to a first converter circuit unit and converting and outputting an alternating current into a direct current, a step-down circuit unit stepping down and outputting a voltage of the current output from the second converter circuit unit, an energization control circuit unit actuated by the direct current and controlling the drive circuit unit, and a regenerative electric power supply unit having a regenerative diode coupled to the discharge resistance unit and outputting a direct current of the regenerative electric power to the step-down circuit unit.

公开(公告)号：US11705832B2

公开(公告)日：2023-07-18

申请号：US17744303

申请日：2022-05-13

Applicant: LG Electronics Inc.

Inventor： Sunku Kwon ,  Chaseung Jun ,  Sehwa Choe ,  Wookjin Lee

IPC: H02P8/00 ,  H02P5/50 ,  H02P21/22

CPC classification number: H02P5/50 ,  H02P21/22 ,  H02P2201/03 ,  H02P2209/01

Abstract: A device for driving a plurality of motors, including an inverter connected to a DC terminal; a multi-phase motor connected to the inverter; and a single-phase motor serially connected to the multi-phase motor, wherein a number of frequency of current input to the multi-phase motor when driving the single-phase motor and the multi-phase motor at the same speed is smaller than the number of frequency of current input to the multi-phase motor when driving the single-phase motor and the multi-phase motor at different speeds. Accordingly, a plurality of motors can be simultaneously driven at different speeds, by using a single inverter.

公开(公告)号：US20180212549A1

公开(公告)日：2018-07-26

申请号：US15875339

申请日：2018-01-19

Applicant: FANUC CORPORATION

Inventor： Tomokazu YOSHIDA

IPC: H02P29/024 ,  H02P27/06

CPC classification number: H02P29/025 ,  H02M1/32 ,  H02M5/42 ,  H02M5/453 ,  H02P27/06 ,  H02P2201/03

Abstract: A motor drive device has an abnormality detection function for a power supply unit between its own device and a power supply, and includes: a forward converter that is inputted AC power from the power supply via the power supply input part, and converts the AC power into DC power; a reverse converter that converts the DC power from the forward converter into AC power; a DC link capacitor provided to a DC link between the forward converter and the reverse converter; a voltage detection part that detects voltage of the DC link capacitor; and an abnormality detection part that obtains a voltage change amount for a predetermined time of the DC link capacitor based on voltage values detected by the voltage detection part, and performs abnormality detection on the power supply input part based on the voltage change amount thus obtained.