公开(公告)号：US3394297A

公开(公告)日：1968-07-23

申请号：US49554965

申请日：1965-10-13

Applicant: CUTLER HAMMER INC

Inventor： RISBERG ROBERT L

IPC: H02P27/06

CPC classification number: H02P27/06 ,  H02P27/047 ,  H02P2201/03

公开(公告)号：US3109976A

公开(公告)日：1963-11-05

申请号：US83159559

申请日：1959-08-04

Applicant: SIEMENS AG

Inventor： GEORG SICHLING

IPC: H02M5/44 ,  H02M5/45 ,  H02P27/06

CPC classification number: H02P27/06 ,  H02M5/44 ,  H02M5/4505 ,  H02P27/047 ,  H02P2201/03

公开(公告)号：US20230208337A1

公开(公告)日：2023-06-29

申请号：US18170899

申请日：2023-02-17

Applicant: Toshiba Carrier Corporation

Inventor： Kenta Yamamoto ,  Masaki Kanamori ,  Yohei Kubota ,  Keiichi Kato

IPC: H02P25/22 ,  H02P27/06

CPC classification number: H02P25/22 ,  H02P27/06 ,  H02P2201/03

Abstract: According to one embodiment, a motor drive apparatus is an apparatus which drives a motor including a plurality of phase windings in a mutually unconnected state, and includes first and second inverters. The first and second inverters are first and second modules each of which is configured in such a manner that a switching circuit including a positive side terminal and negative side terminals and a drive circuit intended to drive the switching circuit are accommodated in one package, and which possess configurations identical to each other, and the first and second modules are arranged on a circuit board in a state where the negative side terminals of the modules are respectively close to each other.

公开(公告)号：US20180309402A1

公开(公告)日：2018-10-25

申请号：US15951710

申请日：2018-04-12

Applicant: Fanuc Corporation

Inventor： Tomokazu Yoshida

IPC: H02P27/06 ,  H02M5/458

CPC classification number: H02P27/06 ,  B60L3/003 ,  B60L2210/30 ,  B60L2210/40 ,  B60L2240/36 ,  H02M5/458 ,  H02M2001/322 ,  H02P2201/03

Abstract: A motor drive device includes a converter which converts an alternating current into a direct current and outputs the direct current to a DC link, a DC link capacitor, inverters, each of which is provided in correspondence with a motor, converts the direct current in the DC link into an alternating current, and outputs the alternating current to the corresponding motor, a temperature detection unit which detects the temperatures of the motors, an opening and closing unit which opens and closes an electrical path between the AC power supply and the converter, and a residual charge consumption control unit which controls at least one of the inverters to output a reactive current, in accordance with information concerning the motor temperatures detected by the temperature detection unit, when the opening and closing unit opens the electrical path to shut off AC input from the AC power supply to the converter.

公开(公告)号：US20180269804A1

公开(公告)日：2018-09-20

申请号：US15908860

申请日：2018-03-01

Applicant: FANUC CORPORATION

Inventor： Shinichi MIZUKAMI

IPC: H02M7/48 ,  H02M1/32 ,  H02P27/00

CPC classification number: H02M7/4826 ,  H02M1/32 ,  H02M5/293 ,  H02M7/5387 ,  H02M2001/327 ,  H02P3/00 ,  H02P27/00 ,  H02P29/024 ,  H02P2201/03 ,  H02P2203/07

Abstract: A motor drive apparatus includes: a converter which converts AC power to DC power and to output the DC power to a DC link; an inverter including power devices which converts the DC power to AC power for driving a motor; a capacitor provided in the DC link; a shut-off circuit to open and close an electrical path between the AC power source and the converter; a constant current control unit which performs control in such a manner as to allow a constant current supplied by the capacitor to pass through a detection target power device among the power devices in the inverter; and an abnormality detection unit which detects an abnormality in the detection target power device based on changes in voltage between a collector and an emitter of the detection target power device during a period in which the constant current passes through the detection target power device.

公开(公告)号：US20180226911A1

公开(公告)日：2018-08-09

申请号：US15890609

申请日：2018-02-07

Applicant: DAIKIN INDUSTRIES, LTD.

Inventor： Satoshi YAGI ,  Kazuya HIRAHARA ,  Daisuke OSHIMI

IPC: H02P27/08 ,  F25B31/02 ,  H02P29/68

CPC classification number: H02P27/08 ,  F25B31/02 ,  F25B2400/01 ,  F25B2500/31 ,  H02M7/53871 ,  H02M2001/327 ,  H02P29/62 ,  H02P29/68 ,  H02P2201/03

Abstract: An inverter device converts DC to AC and supplies power to a load (motor), and includes a temperature sensor that directly or indirectly detects a temperature of the inverter device; a DC link including a smoothing capacitor; an inverter circuit provided between the DC link and the load (motor); and a control unit that controls the inverter circuit. The control unit forcefully passes a current through the DC link when an instruction to allow the inverter circuit to operate is not received and when the temperature detected by the temperature sensor is less than or equal to a predetermined temperature.

公开(公告)号：US20180198396A1

公开(公告)日：2018-07-12

申请号：US15573360

申请日：2016-07-21

Applicant: Mitsubishi Electric Corporation

Inventor： Yoshitomo HAYASHI ,  Yoji TSUTSUMISHITA ,  Masaya HARAKAWA ,  Yuji NOJIRI

IPC: H02P11/06 ,  H02K47/04 ,  H02P9/10

CPC classification number: H02M7/217 ,  H02K47/04 ,  H02M5/4585 ,  H02M7/219 ,  H02M2001/0022 ,  H02M2001/327 ,  H02P9/107 ,  H02P11/06 ,  H02P27/06 ,  H02P29/027 ,  H02P29/032 ,  H02P2201/03

Abstract: A power regenerative converter, includes: a power module configured to include rectifiers and regenerative switches; a smoothing capacitor connected to direct-current power supply terminals, and that accumulates direct-current power during an alternating-current to direct-current conversion; a bus current detector that detects a bus current flowing between either of the direct-current power supply terminals and the smoothing capacitor; a power supply phase detector that detects a phase of an input power supply; a base drive signal generator that generates base drive signals that perform ON/OFF control of the regenerative switching elements based on a power supply phase detected by the power supply phase detection unit; a regeneration controller that performs a start and stop process of a power regenerative operation based on a detection result of the bus current detector and the base drive signals; and an overload detector that detects overload of a power regenerative converter based on the detection result of the bus current detector.

公开(公告)号：US20180091075A1

公开(公告)日：2018-03-29

申请号：US15481608

申请日：2017-04-07

Applicant: NXP USA Inc.

Inventor： Jaroslav MUSIL

IPC: H02P6/28 ,  H02P6/08 ,  H02P21/00

CPC classification number: H02P6/28 ,  H02P6/08 ,  H02P21/0085 ,  H02P27/08 ,  H02P2201/03 ,  H02P2201/09 ,  H02P2201/15

Abstract: An electric motor drive apparatus comprising a voltage converter component arranged to receive a supply voltage signal and output a bus voltage signal, and a motor driver component arranged to receive the bus voltage signal and generate at least one drive signal for an electric motor from the bus voltage signal. The motor driver component is arranged to output a bus voltage feedback signal to the voltage converter component. The voltage converter component is arranged to regulate a voltage level of the bus voltage signal based at least partly on the bus voltage feedback signal output by the motor driver component.

公开(公告)号：US09768723B2

公开(公告)日：2017-09-19

申请号：US15008578

申请日：2016-01-28

Applicant: FANUC CORPORATION

Inventor： Koujirou Sakai ,  Shinichi Horikoshi

IPC: H02P27/04 ,  H02M7/219 ,  H02P27/08 ,  H02M1/32 ,  H02M5/12 ,  H02M5/458

CPC classification number: H02P27/08 ,  H02M1/32 ,  H02M5/12 ,  H02M5/4585 ,  H02P2201/03

Abstract: A motor drive of an embodiment of the present invention includes a PWM converter for converting AC power inputted from a low voltage AC power source into DC power by PWM control, an inverter for converting the received DC power to AC power to drive a motor, and a capacitor connected between the PWM converter and the inverter. The PWM converter is operated so as to limit input and output currents or input and output power to predetermined values, and supplied from the low voltage AC power source with a lower voltage than a voltage required to drive the motor. The PWM converter boosts a DC link voltage being an output voltage to the voltage able to drive the motor, and thereby serves to increase the potential difference of the capacitor between charged and discharged states to reduce the capacitance of the capacitor.

公开(公告)号：US09306487B2

公开(公告)日：2016-04-05

申请号：US14667762

申请日：2015-03-25

Applicant: FANUC CORPORATION

Inventor： Wataru Kuroki

IPC: H02P7/14 ,  H02P23/00 ,  H02P25/00 ,  H02P27/04

CPC classification number: H02P27/04 ,  H02H3/05 ,  H02M1/32 ,  H02M5/4585 ,  H02P2201/03

Abstract: A motor drive device driven by a three-phase AC, which drives a motor by an AC/DC converter and DC/AC converter controlled by a controller, and which has an electromagnetic contractor without an auxiliary contact in an input power circuit, which motor control device is provided at the controller with an off circuit of the electromagnetic contactor and a partial controller of the three-phase bridge circuit at the AC/DC converter, turns on an upper arm of a predetermined phase of the three-phase bridge circuit and turns on the lower arms of other phases in the state where the electromagnetic contactor is turned off, judges the presence of current in this state by the current detector, and, when the current detector detects current, uses a contact fusion detector to detecte contact fusion in the electromagnetic contactor and thereby can detect fusion of a contact in the electromagnetic contactor without an additional circuit.

Abstract translation: 由三相AC驱动的电动机驱动装置，其通过AC / DC转换器驱动电动机和由控制器控制的DC / AC转换器，并且在输入电源电路中具有无辅助触点的电磁承载器，该电动机 控制装置在控制器处提供电磁接触器的断开电路和AC / DC转换器的三相桥式电路的局部控制器，接通三相桥式电路的预定相位的上臂， 在电磁接触器关闭的状态下打开其他相的下臂，通过电流检测器判断在该状态下的电流的存在，并且当电流检测器检测电流时，使用接触融合检测器检测接触融合 在电磁接触器中，从而可以检测电磁接触器中的触点的融合，而无需额外的电路。