公开(公告)号：US20230344379A1

公开(公告)日：2023-10-26

申请号：US18333346

申请日：2023-06-12

申请人： Regal Beloit America, Inc.

发明人： Ludovic Andre Chretien ,  Roger Carlos Becerra ,  Kamron Mark Wright ,  Lester Benjamin Manz

IPC分类号： H02P27/06 ,  H02P1/30 ,  H02P1/02 ,  H02P1/42 ,  H02P1/44 ,  H02P25/04

CPC分类号： H02P27/06 ,  H02P1/30 ,  H02P1/022 ,  H02P1/426 ,  H02P1/44 ,  H02P25/04

摘要： Controllers for controlling hybrid motor drive circuits configured to drive a motor are provided herein. A controller is configured to drive the motor using an inverter when a motor commanded frequency is not within a predetermined range of line input power frequencies, and couple line input power to an output of the inverter using a first switch device when the motor commanded frequency is within the predetermined range of line input power frequencies.

公开(公告)号：US11463034B2

公开(公告)日：2022-10-04

申请号：US16950153

申请日：2020-11-17

申请人： Hamilton Sundstrand Corporation

发明人： Andrei Dinu

IPC分类号： H02P1/30 ,  H02P1/52 ,  H02P3/00 ,  H02P21/13 ,  H02P21/22 ,  H02P27/12 ,  H03H7/01

摘要： A motor drive comprises a rectifier circuit portion arranged to receive an externally supplied AC voltage and to generate a DC bus voltage. An inverter circuit portion is arranged to receive the DC bus voltage (VDC_Bus) and to generate an AC output voltage (Vout) for supply to an external load. A DC bus portion is connected between the rectifier and the inverter. An inductor (L1) is connected in series along a bus conductor between the rectifier and inverter, and a DC link capacitor (C1) is connected in parallel between the bus conductors. A voltage across the DC link capacitor (C1) is input to a tuneable notch filter arranged to supply a filtered signal. A controller varies the resonant frequency of the notch filter to a plurality of values across an operational range and modulates a supply current provided by the inverter with a probe current signal at the resonant frequency.

公开(公告)号：US11374526B2

公开(公告)日：2022-06-28

申请号：US17239887

申请日：2021-04-26

申请人： Rohm Co., Ltd.

发明人： Takashi Esumi

IPC分类号： H02P1/30 ,  H02P1/52 ,  H02P3/00 ,  H02P27/12 ,  H02P21/22

摘要： The present disclosure is related to ensuring a period for detecting a phase current from a DC bus current of an inverter. A motor control circuit of the present disclosure includes: a voltage command generator and a PWM signal generator. The voltage command generator detects a phase current from a DC bus current of an inverter driving an AC motor, and generating three-phase voltage commands. The PWM signal generator generates three-phase PWM signals to the inverter according to a comparison result of the three-phase voltage commands and a triangular wave signal with a predetermined frequency and outputs the three-phase PWM signals to the inverter. The PWM signal generator corrects a maximum or minimum voltage command by synchronizing the maximum or minimum voltage command with an intermediate command in a first period of multiple consecutive PWM periods.

公开(公告)号：US20220158572A1

公开(公告)日：2022-05-19

申请号：US16951742

申请日：2020-11-18

申请人： Ford Global Technologies, LLC

发明人： Xuemei SUN ,  Papiya BAGCHI ,  Rimma PARANSKY ,  Anish DASARI ,  Vishal SRIVASTAVA

IPC分类号： H02P1/42 ,  B60L3/00 ,  H02P1/30 ,  H02P29/024

摘要： An electrified vehicle includes a traction battery, an inverter coupled to the traction battery and operable to convert direct current (DC) power from the traction battery to three-phase alternating current (AC) power, a three-phase electric machine coupled to the inverter by associated cables, a sensor configured to generate a signal associated with rotational position of a rotor of the three-phase electric machine, a current sensor associated with each cable/phase of the three-phase electric machine, and a controller programmed to generate non-zero phase current at each of a plurality of predetermined regularly spaced rotational positions by either adjusting rotor angle or injecting q-axis current, command the inverter to inject a test current pulse to the electric machine, and generate a diagnostic signal in response to any one of the current sensor signals being less than an associated threshold to detect a cable or current sensor anomaly in a single phase.

公开(公告)号：US20210313910A1

公开(公告)日：2021-10-07

申请号：US16842284

申请日：2020-04-07

申请人： Toshiba International Corporation

发明人： John Kleinecke ,  Walter Campos

IPC分类号： H02P1/30 ,  H02M7/00

摘要： The systems and methods disclosed relate to arc resistant medium voltage motor control centers for bypass and synch transfer. A drive control system comprising: a variable frequency drive cabinet comprising a variable frequency drive; a power supply line; at least one motor control cabinet having a top portion and a bottom portion, wherein the at least one motor control cabinet is arc resistant, wherein the at least one motor control cabinet comprises: a medium voltage fused bypass controller in the top portion; a medium voltage non-fused transfer controller in the bottom portion; a reactor compartment, wherein the reactor compartment is arc resistant; wherein the variable frequency drive is coupled to the power supply line and the non-fused transfer controller, and the fused bypass controller is coupled to the power supply line.

公开(公告)号：US11128242B2

公开(公告)日：2021-09-21

申请号：US16830478

申请日：2020-03-26

申请人： LG ELECTRONICS INC.

发明人： Sunku Kwon ,  Chaseung Jun

IPC分类号： H02P1/30 ,  H02P5/505

摘要： A motor driving device controls a three-phase motor and a single-phase motor to operate in parallel. The motor driving device includes a dc terminal in which an upper and a lower DC-link capacitor are located. The motor driving device also includes a neutral terminal disposed between the upper and lower DC-link capacitors. The motor driving device includes an inverter that includes three pairs of upper switching elements and lower switching elements. Two pairs of upper switching elements and lower switching elements among three pairs are connected to a-phase terminal and b-phase terminal of the three-phase motor, respectively. The other pair of upper switching elements and lower switching elements among three pairs is connected to a first terminal of the single-phase motor. The neutral terminal is connected to c-phase terminal of the three-phase motor and a second terminal of the single-phase motor.

公开(公告)号：US10778122B2

公开(公告)日：2020-09-15

申请号：US15053680

申请日：2016-02-25

申请人： Eaton Corporation

发明人： Xiaoyuan Hong ,  Hao Luo ,  Kevin Lee

IPC分类号： H02P27/04 ,  H02P1/52 ,  H02P1/30

摘要： A connecting device for motor and supply network is provided, comprising: a Variable Frequency Drive (VFD), a first switch (S1) and a second switch (S2), wherein the Variable Frequency Drive (VFD) is connected in series to the first switch (S1), and the second switch (S2) is connected in parallel to the series circuit composed of the Variable Frequency Drive (VFD) and the first switch (S1). The connecting device of the invention further comprises a bidirectional Silicon Controlled Rectifier (SCR) or two anti-parallel single-directional Silicon Controlled Rectifiers (SCR1,SCR2), wherein the bidirectional Silicon Controlled Rectifier (SCR) or the two anti-parallel single-directional Silicon Controlled Rectifiers (SCR1,SCR2) is/are connected in parallel to the second switch (S2). The connecting device of the present invention would not be subject to high current surge when VFD bypassing, avoids the high cost for the overrating of the cable and the bypassing switch, and is easy to be implemented.

公开(公告)号：US20180375446A1

公开(公告)日：2018-12-27

申请号：US15777946

申请日：2016-11-24

申请人： Woehner GmbH & Co., KG Elektrotechnische Systeme

发明人： Philipp Steinberger ,  Daniel Steiner ,  Hubert Lenker

IPC分类号： H02P1/30 ,  H02P1/02

摘要： Device for operating an electric motor, comprising a detection unit for detecting zero-crossings and phase angles of applied phase-shifted sinusoidal voltage phases of a multi-phase power supply network; and a switching unit for connecting half-waves of the applied sinusoidal voltage phases through by means of semiconductor switches in accordance with switching patterns applied to the semiconductor switches, said patterns being synchronised with the detected phase angles and zero-crossings, to generate phase-shifted quasi-sinusoidal voltage phases which are applied directly to the electric motor.

公开(公告)号：US09970446B1

公开(公告)日：2018-05-15

申请号：US15352583

申请日：2016-11-16

申请人： ASIA VITAL COMPONENTS CO., LTD.

发明人： Hu Zhang ,  Dong-Qi Tian ,  Wei-Ming Li

IPC分类号： H02P1/54 ,  H02P1/30 ,  F04D27/00 ,  H02P5/50

CPC分类号： F04D27/004 ,  F04D25/166 ,  F04D27/001 ,  H02P5/50

摘要： A multi-fan speed single-wire output system and a method thereof are disclosed. The system includes at least one first fan and one second fan, which have a first and a second rotation speed, respectively. The first fan transmits the first rotation speed to the second fan, and the second fan performs a logical operation on the first and the second rotation speed to generate an output rotation speed.

公开(公告)号：US09876457B2

公开(公告)日：2018-01-23

申请号：US15101501

申请日：2014-12-02

申请人： Robert Bosch GmbH

发明人： Markus Becker ,  Ulrich Vollmer

IPC分类号： H02P1/30 ,  H02P27/08 ,  H02P29/50 ,  F04D25/08

CPC分类号： H02P27/085 ,  F04D25/08 ,  H02P29/50 ,  H02P2209/09

摘要： The invention relates to an electric motor (1), in particular a fan motor, comprising a device (5) for generating a sequence (3) of signals that comprises a plurality of especially blocks (22) of signals. The blocks (22) of signals comprise a plurality of signals (19) having a specific signal duration (20). According to the invention, the signal duration (20) of the individual signals (19) varies.