公开(公告)号：US20170229994A1

公开(公告)日：2017-08-10

申请号：US15429170

申请日：2017-02-10

Applicant: KABUSHIKI KAISHA YASKAWA DENKI

Inventor： Mitsujiro SAWAMURA ,  Yasuhiko KAKU

IPC: H02P27/08 ,  H02P6/14 ,  H02M3/158 ,  H02M7/06 ,  H02M7/537

CPC classification number: H02P27/08 ,  H02M3/158 ,  H02M5/458 ,  H02M7/06 ,  H02M7/537 ,  H02P6/14 ,  H02P2201/03

Abstract: A motor control apparatus includes an AC-DC converter, an auxiliary power source, and an inverter. The AC-DC converter converts AC power into DC power and feeds the DC power to a DC bus bar. DC power is fed from the auxiliary power source to the DC bus bar and from the DC bus bar to the auxiliary power source. The inverter converts the DC power of the DC bus bar into the AC power and feeds the AC power to a motor. The auxiliary power source includes a capacitor, a DC-DC converter, and circuitry. The DC-DC converter performs conversion between a first DC voltage of the DC bus bar and a second DC voltage applied between both terminals of the capacitor or inside of the capacitor. The circuitry is configured to control the DC-DC converter to maintain positive correlation between the second DC voltage and the first DC voltage.

公开(公告)号：US20160156288A1

公开(公告)日：2016-06-02

申请号：US14952841

申请日：2015-11-25

Applicant: KABUSHIKI KAISHA YASKAWA DENKI

Inventor： Mitsujiro SAWAMURA ,  Junichi WATANABE ,  Daichi HORIMAI

IPC: H02P3/04

CPC classification number: H02P3/04 ,  B25J9/1674 ,  B25J19/0004 ,  B25J19/06 ,  F16D59/02 ,  F16D66/00 ,  F16D2055/0058 ,  F16D2066/003 ,  F16D2121/22 ,  G01L5/28 ,  G05B19/406 ,  G05B2219/41279 ,  H02P3/00 ,  H02P29/0241

Abstract: This disclosure discloses a brake diagnosis device configured to diagnose a brake of a motor with a brake. The brake diagnosis device includes a brake control part, a diagnosis part, and a signal output part. The brake control part is configured to actuate or release the brake. The diagnosis part is configured to diagnose a presence or absence of an abnormality of the brake while the brake is actuated by the brake control part. The signal output part is configured to output a signal related to a brake abnormality after the brake is released by the brake control part in a case that the diagnosis part diagnoses the brake as having an abnormality.

Abstract translation: 本公开公开了一种制动诊断装置，其被配置为利用制动器诊断电动机的制动。 制动诊断装置包括制动控制部，诊断部和信号输出部。 制动控制部分构造成致动或释放制动器。 诊断部被配置为在制动器由制动控制部驱动时诊断制动器的异常的存在或不存在。 在诊断部诊断为具有异常的情况下，信号输出部被配置为输出与制动器异常有关的信号。

公开(公告)号：US20190149068A1

公开(公告)日：2019-05-16

申请号：US15993757

申请日：2018-05-31

Applicant: KABUSHIKI KAISHA YASKAWA DENKI

Inventor： Mitsujiro SAWAMURA ,  Shouta KAWAHARA ,  Tatsuaki WADA

IPC: H02P3/18 ,  H02J3/30 ,  H02J3/32 ,  H02J1/16

Abstract: A motor controller includes an AC-to-DC converter that converts AC power from an AC power source into DC power and supplies the DC power to a DC bus line, an auxiliary power source that charges the DC bus line with the DC power and discharges the DC power from the DC bus line, and a first inverter that controls power supply to a motor using the DC power from the DC bus line. The auxiliary power source includes a rotating electrical machine, a flywheel connected to the machine, a second inverter that supplies power to the machine using the DC power on the DC bus line and regenerates the power from the machine into the DC power on the DC bus line, and control circuitry that controls the second inverter to cause rotational angle velocity of the flywheel to keep positive correlation with bus-to-bus voltage of the DC bus line.

公开(公告)号：US20180013373A1

公开(公告)日：2018-01-11

申请号：US15622797

申请日：2017-06-14

Applicant: Kabushiki Kaisha Yaskawa Denki

Inventor： Mitsujiro SAWAMURA ,  Kunimasa Ando ,  Tatsuaki Wada

IPC: H02P27/08 ,  H02M7/06 ,  H02M3/158 ,  H02M7/5395 ,  H02M1/08 ,  H02M1/00

CPC classification number: H02P29/024 ,  H02M1/08 ,  H02M1/32 ,  H02M1/36 ,  H02M3/158 ,  H02M5/458 ,  H02M7/06 ,  H02M7/5395 ,  H02M2001/0009 ,  H02P27/08 ,  H02P2201/07

Abstract: A motor control system includes a DC-to-DC converter including a semiconductor switch and a reactor that cooperates with the switch to convert input-side DC bus voltage across first and second input-side DC buses into predetermined output-side DC bus voltage across first and second output-side DC buses and to output the output-side voltage, control circuitry that controls duty factor of the switch and determine, based on input-side detection value of the input-side voltage and output-side detection value of the output-side voltage, whether there is failure in the system when the factor is 100 percent and reactor-current detection value of reactor current through the reactor is approximately zero, a smoothing capacitor connected to the output-side buses and disposed between the output-side buses, and an inverter that is connected to the capacitor through the output-side buses, converts DC power from the output-side buses into AC power and supplies the power to a motor.