公开(公告)号：US12113467B2

公开(公告)日：2024-10-08

申请号：US17791413

申请日：2020-10-22

Applicant: Hitachi Industrial Equipment Systems Co., Ltd.

Inventor： Yusuke Uei ,  Takuya Ishigaki ,  Hideto Takada ,  Yutaka Matsumoto ,  Masaki Sugiura

IPC: H02P27/00 ,  H02P21/18 ,  H02P21/20 ,  H02P27/08

CPC classification number: H02P27/08 ,  H02P21/18 ,  H02P21/20 ,  H02P2201/09

Abstract: A power conversion system includes a power conversion device supplying electric power to a motor and a power supply device supplying electric power to the power conversion device. The power conversion device includes a reverse converter that converts the electric power, a control circuit that controls the reverse converter, and a current detector that detects current flowing through the reverse converter. The power supply device includes a storage device that stores electric power in accordance with a voltage, a step-up/down power supply circuit that changes the voltage of the storage device based on a voltage command, and a voltage command computing circuit that computes the energy stored in the storage device and output it as the voltage command to the step-up/down power supply circuit. When the characteristics of the motor are restricted, the voltage command computing circuit temporarily changes the voltage command to improve the motor characteristics.

公开(公告)号：US12006616B2

公开(公告)日：2024-06-11

申请号：US17258149

申请日：2019-07-05

Applicant: LG ELECTRONICS INC.

Inventor： Jieon Kim ,  Jeongbin Rew ,  Junho Lee

IPC: D06F34/10 ,  D06F33/42 ,  D06F33/47 ,  D06F37/30 ,  D06F39/08 ,  F04D13/06 ,  F04D15/00 ,  H02P27/08 ,  H02P29/024 ,  D06F103/48 ,  D06F105/08 ,  D06F105/46 ,  D06F105/58 ,  D06F105/62 ,  F04D1/00

CPC classification number: D06F34/10 ,  D06F33/42 ,  D06F33/47 ,  D06F37/30 ,  D06F39/085 ,  F04D13/06 ,  F04D15/00 ,  H02P27/08 ,  H02P29/026 ,  D06F2103/48 ,  D06F2105/08 ,  D06F2105/46 ,  D06F2105/58 ,  D06F2105/62 ,  F04D1/00 ,  H02P2201/09 ,  H02P2201/15

Abstract: The present disclosure relates to a drain pump driving apparatus and a laundry treatment machine including the same. A drain pump driving apparatus according to an embodiment of the present disclosure includes: a converter; an inverter to output converted AC voltage to a drain pump motor; an output current detector to detect an output current flowing in the motor; and a controller to control the inverter, wherein in case in which the speed of the motor increases and the output current flowing in the motor decreases during a predetermined period among an operation period of the drain motor, the controller controls the inverter to be turned off. Accordingly, it is possible to protect internal circuit elements in case the motor loses its synchronism.

公开(公告)号：US11863096B2

公开(公告)日：2024-01-02

申请号：US17166646

申请日：2021-02-03

Applicant: Tula eTechnology, Inc.

Inventor： Babak Mazda ,  Adya S. Tripathi ,  Paul Carvell

IPC: H02P27/08

CPC classification number: H02P27/085 ,  H02P2201/09

Abstract: A boost circuit is arranged to reduce rise and fall times of pulsed power used for pulsed control operation of electric machines. Magnetic energy present in the electric machine at the end of a pulse is extracted by the boost circuit to reduce the pulse fall time. The energy is stored by the boost circuit and then applied at the beginning of a subsequent pulse to reduce the rise time. By reducing rise and fall times compared to not using such a boost circuit, machine efficiency is improved.

公开(公告)号：US20180337593A1

公开(公告)日：2018-11-22

申请号：US15955242

申请日：2018-04-17

Applicant: TOYOTA JIDOSHA KABUSHIKI KAISHA

Inventor： Shintaro TSUJII

IPC: H02M1/38 ,  H02P27/06 ,  B60L11/18

CPC classification number: H02M1/38 ,  B60L3/003 ,  B60L50/51 ,  B60L50/60 ,  B60L2210/40 ,  B60L2220/40 ,  B60L2240/529 ,  B60L2260/165 ,  H02M3/158 ,  H02M7/5387 ,  H02M7/797 ,  H02M2001/007 ,  H02M2001/008 ,  H02M2001/385 ,  H02P27/06 ,  H02P2201/09

Abstract: In a process of cancelling shutdown of a second converter during transmission of electric power between a first power line and a second power line with voltage conversion by a first converter in a shutdown state of the second converter, a motor vehicle performs single element switching control that switches one switching element between third and fourth switching elements of the second converter while setting the other switching element off, such as to prevent an electric current in a reverse direction to an electric current flowing in a first reactor of the first converter from flowing in a second reactor of the second converter.

公开(公告)号：US20180302020A1

公开(公告)日：2018-10-18

申请号：US15937173

申请日：2018-03-27

Applicant: TOYOTA JIDOSHA KABUSHIKI KAISHA

Inventor： Yuta SACHIMORI ,  Chihiro KAMEYAMA ,  Koji KURAOKA

IPC: H02P29/68 ,  H02P27/06

CPC classification number: H02P29/68 ,  B60L3/003 ,  B60L3/0038 ,  B60L15/02 ,  B60L50/51 ,  B60L2210/14 ,  B60L2210/40 ,  B60L2220/14 ,  B60L2240/525 ,  H02M3/158 ,  H02M7/5387 ,  H02M2001/007 ,  H02P27/06 ,  H02P2201/09 ,  Y02T10/7258

Abstract: When the temperature detected by the temperature sensor is equal to or higher than a predetermined temperature, the drive system controls the boost converter and the inverter, such that the motor is driven in a range of an electric power on which a limit is imposed to decrease a discharge power upper limit value. When a failure occurs in the boost converter, the drive system stops the boost converter. When it is subsequently determined that the failure of the boost converter causes a failure of the temperature sensor, the drive system controls the inverter, such that the motor is driven without a limit imposed on the discharge power upper limit value, irrespective of the temperature detected by the temperature sensor that is equal to or higher than the predetermined temperature.

公开(公告)号：US20180226817A1

公开(公告)日：2018-08-09

申请号：US15426768

申请日：2017-02-07

Applicant: Infineon Technologies AG

Inventor： Christian Heiling ,  Matthias Bogus ,  Benno Koeppl

IPC: H02J7/00 ,  H03K17/687

CPC classification number: H02J7/0034 ,  G05F1/59 ,  H02J7/0063 ,  H02J7/0065 ,  H02J2007/0067 ,  H02P27/06 ,  H02P2201/09 ,  H03K2217/0027 ,  H03K2217/0063 ,  H03K2217/0072 ,  H03K2217/0081

Abstract: Supply voltage switching circuitry that is configured to dynamically switch between a battery supply voltage and a boost supply voltage, that is generated from the battery supply voltage, to power half-bridge driver circuitry based on an on-going evaluation of one or more system parameters.

公开(公告)号：US20180219546A1

公开(公告)日：2018-08-02

申请号：US15420827

申请日：2017-01-31

Applicant: Ford Global Technologies, LLC

Inventor： Shuitao Yang ,  Fan Xu ,  Yan Zhou ,  Lihua Chen ,  Mohammed Khorshed Alam

IPC: H03K17/16 ,  H02M7/5395 ,  H02M1/088 ,  H02P27/08 ,  B60L11/18 ,  B60L15/02

CPC classification number: H03K17/166 ,  B60L11/1803 ,  B60L15/02 ,  B60L2210/14 ,  H02M1/08 ,  H02M1/088 ,  H02M3/155 ,  H02M7/483 ,  H02M7/5387 ,  H02M7/5395 ,  H02M2001/0058 ,  H02M2001/007 ,  H02P27/08 ,  H02P2201/07 ,  H02P2201/09 ,  H02P2201/11 ,  H03K17/0822 ,  H03K17/165 ,  H03K17/168 ,  H03K2217/009 ,  Y02T10/645 ,  Y02T10/7005 ,  Y02T10/7225 ,  Y02T10/92

Abstract: A gate driver of a power device includes a power supply and a resonant circuit. The power supply may have a positive potential and a negative potential. The resonant circuit may include an inductor and be configured to recirculate charge during turn-off by inducing a first field based on a positive charge from a gate caused by the positive potential, and in response to reversal of a voltage across the inductor, collapsing the first field to draw charge from the gate.

公开(公告)号：US09973116B2

公开(公告)日：2018-05-15

申请号：US14661030

申请日：2015-03-18

Applicant: FANUC Corporation

Inventor： Junpei Maruyama ,  Masakazu Niwa

IPC: H02P1/00 ,  H02P5/68 ,  H02P5/74 ,  B29C45/76 ,  B29C45/17

CPC classification number: H02P5/68 ,  B29C45/7666 ,  B29C2045/1792 ,  B29C2045/7673 ,  H02P5/74 ,  H02P2201/09 ,  Y02P70/261

Abstract: A power supply converter controller in an injection molding machine continuously operates a power supply converter in a continuous operation interval, operates the power supply converter in a step-up interval to increase a voltage of an electric storage unit up to a step-up voltage, and intermittently operates the power supply converter in an intermittent operation interval.

公开(公告)号：US20180013356A1

公开(公告)日：2018-01-11

申请号：US15640906

申请日：2017-07-03

Applicant: TOYOTA JIDOSHA KABUSHIKI KAISHA

Inventor： Yuji NISHIBE ,  Yasuyoshi SAITO ,  Kensuke WADA ,  Shinichi MIURA ,  Tadafumi YOSHIDA ,  Masayuki NAGAO ,  Yoshinobu MURAKAMI ,  Tomohiro KAWASHIMA

IPC: H02M7/00 ,  H02M7/219 ,  H05K7/20 ,  H02P27/06

CPC classification number: H05K7/1432 ,  H02M7/003 ,  H02M2001/327 ,  H02P27/06 ,  H02P2201/09

Abstract: In a converter circuit of an electric power conversion device, an adjustment portion divides a voltage of a battery input to a semiconductor module, by a first capacity element and a second capacity element that are connected in series to each other. Then, a middle point between the first capacity element and the second capacity element is connected to a cooler to fix a potential thereof. The electric power conversion device can ensure that a waveform of a surge voltage that is generated on a creepage surface between a lead frame terminal and the cooler has a negative voltage range (a range where an offset voltage is applied).

公开(公告)号：US09849806B1

公开(公告)日：2017-12-26

申请号：US15169987

申请日：2016-06-01

Applicant: FORD GLOBAL TECHNOLOGIES, LLC

Inventor： Wei Xu ,  Fazal Urrahman Syed

IPC: B60L11/14 ,  B60L15/02 ,  H02P27/08 ,  H02P6/182

CPC classification number: B60L15/02 ,  B60L2210/12 ,  B60L2210/14 ,  B60L2210/40 ,  B60L2220/14 ,  B60L2240/421 ,  B60L2240/423 ,  B60L2240/429 ,  B60L2260/42 ,  H02P6/182 ,  H02P27/08 ,  H02P2201/09 ,  Y02T10/7258

Abstract: A vehicle powertrain includes a DC-DC converter and a controller. The DC-DC converter is coupled between a traction battery and an inverter for an electric machine. The controller is configured to, in response to a rotational speed of the electric machine dropping below a back EMF threshold speed, transition to a current control based six step inverter mode and operate the DC-DC converter to output a voltage less than an open circuit voltage of the traction battery.