公开(公告)号：US10158316B2

公开(公告)日：2018-12-18

申请号：US15429170

申请日：2017-02-10

Applicant: KABUSHIKI KAISHA YASKAWA DENKI

Inventor： Mitsujiro Sawamura ,  Yasuhiko Kaku

IPC: H02P27/08 ,  H02M7/06 ,  H02M7/537 ,  H02P6/14 ,  H02M5/458 ,  H02M3/158

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：US10110155B2

公开(公告)日：2018-10-23

申请号：US15429170

申请日：2017-02-10

Applicant: KABUSHIKI KAISHA YASKAWA DENKI

Inventor： Mitsujiro Sawamura ,  Yasuhiko Kaku

IPC: H02P27/08 ,  H02M7/06 ,  H02M7/537 ,  H02P6/14 ,  H02M5/458 ,  H02M3/158

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：US09537431B2

公开(公告)日：2017-01-03

申请号：US14952841

申请日：2015-11-25

Applicant: KABUSHIKI KAISHA YASKAWA DENKI

Inventor： Mitsujiro Sawamura ,  Junichi Watanabe ,  Daichi Horimai

IPC: H02K7/10 ,  H02P3/04 ,  B25J9/16 ,  B25J19/00 ,  B25J19/06 ,  F16D66/00 ,  G01L5/28 ,  G05B19/406 ,  H02P3/00 ,  F16D59/02 ,  F16D55/00 ,  F16D121/22

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相关的信号，在刹车控制部分释放制动器之后。

公开(公告)号：US10050578B2

公开(公告)日：2018-08-14

申请号：US15622797

申请日：2017-06-14

Applicant: Kabushiki Kaisha Yaskawa Denki

Inventor： Mitsujiro Sawamura ,  Kunimasa Ando ,  Tatsuaki Wada

IPC: H02P27/04 ,  H02P29/024 ,  H02M7/06 ,  H02M3/158 ,  H02M7/5395 ,  H02P27/08 ,  H02M1/08 ,  H02M1/00

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.