公开(公告)号：US20240063708A1

公开(公告)日：2024-02-22

申请号：US18259340

申请日：2021-02-12

Applicant: Mitsubishi Electric Corporation

Inventor： Koichi ARISAWA ,  Takuya SHIMOMUGI ,  Takaaki TAKAHARA ,  Haruka MATSUO ,  Keisuke UEMURA

IPC: H02M1/12 ,  H02M1/42 ,  H02M1/00 ,  H02M1/16 ,  H02M5/458 ,  H02P27/12 ,  H02M1/14 ,  F25B49/02

CPC classification number: H02M1/12 ,  H02M1/4283 ,  H02M1/0009 ,  H02M1/16 ,  H02M1/4225 ,  H02M5/4585 ,  H02P27/12 ,  H02M1/143 ,  F25B49/025 ,  H02P2201/07 ,  H02P2201/09 ,  H02P2201/15 ,  F25B2600/021

Abstract: A power converter includes: a rectifying and boosting unit that rectifies first alternating-current power supplied from a commercial power supply and boosts a voltage of the first alternating-current power; a capacitor connected to an output end of the rectifying and boosting unit; an inverter to convert power output from the rectifying and boosting unit and the capacitor into second alternating-current power, and output the second alternating-current power to a device; and a control unit that reduces a current flowing through the capacitor by controlling the rectifying and boosting unit and by controlling the inverter such that the inverter outputs, to the device, the second alternating-current power containing a ripple dependent on a ripple of power flowing from the rectifying and boosting unit into the capacitor. The control unit controls in accordance with a load state.

公开(公告)号：US20230146546A1

公开(公告)日：2023-05-11

申请号：US17453802

申请日：2021-11-05

Applicant: Emerson Climate Technologies, Inc.

Inventor： Joseph G. Marcinkiewicz ,  Mark Qin ,  Nikhil R. Lakhkar ,  Robert Dziuba

IPC: F25B49/02 ,  H02P29/68 ,  F25B13/00 ,  F25B31/02

CPC classification number: F25B49/025 ,  F25B13/00 ,  F25B31/02 ,  H02P29/68 ,  H02P2201/09 ,  H02P2201/15

Abstract: In other features, a refrigeration system is provided and includes a compressor motor, an inverter, a converter and a control module. The inverter is configured to convert a direct current (DC) bus voltage to an alternating current (AC) voltage and supply the AC voltage to the compressor motor. The converter is configured to convert a DC input voltage to the DC bus voltage. The control module is configured to obtain a parameter and in response to the parameter exceeding a predetermined threshold, reduce the DC bus voltage and at least one of (i) reduce a switching frequency, (ii) increase an amount of negative d-axis current of the compressor motor, or (iii) reduce a speed of the compressor motor.

公开(公告)号：US09825560B2

公开(公告)日：2017-11-21

申请号：US14489078

申请日：2014-09-17

Applicant: Regal Beloit America, Inc.

Inventor： Ming Li ,  Peizhong Yi ,  Roger Carlos Becerra ,  Ludovic Andre Chretien

IPC: H02M7/46 ,  H02M3/28 ,  H02M7/217 ,  H02P6/00 ,  H02M1/42 ,  H01F17/04 ,  H02M1/12 ,  H02M3/158 ,  H01F17/00

CPC classification number: H02P6/28 ,  H01F17/04 ,  H01F2017/0093 ,  H02M1/126 ,  H02M1/4225 ,  H02M1/4266 ,  H02M3/1584 ,  H02M2001/123 ,  H02P6/002 ,  H02P2201/09 ,  H02P2201/15 ,  Y02B70/126

Abstract: An interleaved bridgeless power factor correction (PFC) converter-based motor drive system is provided. The system includes a first inductor coupled to a second inductor. The coupled first and second inductors are coupled to a first input configured to be coupled to a first line of an alternating current (AC) power supply. The system also includes a third inductor coupled to a fourth inductor. The coupled third and fourth inductors are coupled to a second input configured to be coupled to a second line of the AC power supply. The system further includes a digital active power factor correction (PFC) controller configured to cause current in at least one of the coupled first and second inductors and the coupled third and fourth inductors to be interleaved.

公开(公告)号：US09300241B2

公开(公告)日：2016-03-29

申请号：US14559378

申请日：2014-12-03

Applicant: Regal Beloit America, Inc.

Inventor： Roger Carlos Becerra ,  Yao Da

IPC: H02P6/00 ,  H02P29/00 ,  H02M1/12 ,  H02M1/42 ,  H02P6/14

CPC classification number: H02P29/0038 ,  H02M1/126 ,  H02M1/4266 ,  H02P6/14 ,  H02P29/50 ,  H02P2201/15 ,  Y02B70/123

Abstract: A drive circuit is provided for reducing conducted electromagnetic interference provided by a power line to a motor controller. The drive circuit includes an EMI filter having first and second EMI filter input terminals, and first and second EMI filter output terminals. The first input terminal is configured to be coupled to a first AC line output and the second input terminal is configured to be coupled to a second AC line output. The drive circuit includes a rectifier portion having first and rectifier input terminals coupled to the first and second EMI output terminals, respectively. The drive circuit includes at least two series-coupled filter capacitors after the rectifier portion and a PFC choke coupled at a first end to one of the EMI filter output terminals and to one of the first and second rectifier input terminals, and at a second end between the series-coupled filter capacitors.

Abstract translation: 提供驱动电路，用于将由电力线提供的传导电磁干扰降低到电动机控制器。 驱动电路包括具有第一和第二EMI滤波器输入端子以及第一和第二EMI滤波器输出端子的EMI滤波器。 第一输入端子被配置为耦合到第一AC线路输出，并且第二输入端子被配置为耦合到第二AC线路输出。 驱动电路包括整流部分，其具有分别耦合到第一和第二EMI输出端的第一和整流器输入端。 驱动电路包括在整流器部分之后的至少两个串联耦合的滤波电容器，以及在第一端处耦合到EMI滤波器输出端子之一以及第一和第二整流器输入端子之一的PFC扼流圈，并且在第二端 串联耦合滤波电容之间。

公开(公告)号：US09240749B2

公开(公告)日：2016-01-19

申请号：US13963317

申请日：2013-08-09

Applicant: Emerson Climate Technologies, Inc.

Inventor： Charles E. Green ,  Joseph G. Marcinkiewicz

IPC: H02P1/30 ,  H02P1/52 ,  H02P3/00 ,  H02P7/06 ,  H02P27/04 ,  H02P27/08 ,  H02P21/14

CPC classification number: H02P27/08 ,  H02P23/14 ,  H02P23/26 ,  H02P23/30 ,  H02P27/04 ,  H02P27/085 ,  H02P2201/15 ,  H02P2205/05 ,  H02P2205/07

Abstract: A control system for a motor includes a pulse-width modulation module, a pulse skip determination module, and a duty cycle adjustment module. The pulse-width modulation module generates three duty cycle values based on three voltage requests, respectively. A plurality of solid-state switches control three phases of the motor in response to the three duty cycle values, respectively. The pulse skip determination module generates a pulse skip signal. The duty cycle adjustment module selectively prevents the plurality of solid-state switches from switching during intervals specified by the pulse skip signal.

Abstract translation: 电动机的控制系统包括脉冲宽度调制模块，脉冲跳跃确定模块和占空比调节模块。 脉冲宽度调制模块分别基于三个电压请求产生三个占空比值。 多个固态开关分别响应于三个占空比值控制电动机的三相。 脉冲跳过确定模块产生脉冲跳越信号。 占空比调整模块选择性地防止多个固态开关在由脉冲跳跃信号指定的间隔期间切换。

公开(公告)号：US08164290B2

公开(公告)日：2012-04-24

申请号：US12578788

申请日：2009-10-14

Applicant: Wei-Shuo Tseng ,  Chia-Pin Wei ,  Chih-Hsiang Kuo

Inventor： Wei-Shuo Tseng ,  Chia-Pin Wei ,  Chih-Hsiang Kuo

IPC: H02P6/00

CPC classification number: H02P7/29 ,  H02P6/26 ,  H02P2201/15 ,  Y10T307/527 ,  Y10T307/544

Abstract: A fan includes a motor control device which is electrically connected with a motor and an alternating current power source. The motor control device includes a converting circuit, a power factor correction circuit and a motor controlling circuit. The voltage of the alternating current power source is converted to be direct current voltage by the converting circuit and the power factor correction circuit, and then the direct current voltage is outputted to the motor control circuit. The motor controlling circuit generates a driving signal in accordance with the direct current voltage for driving the motor to operate.

Abstract translation: 风扇包括与电动机和交流电源电连接的电动机控制装置。 电动机控制装置包括转换电路，功率因数校正电路和电动机控制电路。 通过转换电路和功率因数校正电路将交流电源的电压转换为直流电压，然后将直流电压输出到电动机控制电路。 电动机控制电路根据用于驱动电动机的直流电压产生驱动信号进行动作。

公开(公告)号：US20110089912A1

公开(公告)日：2011-04-21

申请号：US12723874

申请日：2010-03-15

Applicant: Yuki Kamata ,  Hiroshi Masumoto ,  Hiroshi Nagai ,  Sadao Ikeda

Inventor： Yuki Kamata ,  Hiroshi Masumoto ,  Hiroshi Nagai ,  Sadao Ikeda

IPC: G05F1/70

CPC classification number: H02P21/50 ,  H02P2201/09 ,  H02P2201/15

Abstract: A driver includes a sensor sensing a driving current and a driving voltage for an external device including a capacitor, a PWM, a PFC, and a controller. The PFC includes a phase angle estimation unit estimating a phase angle variation of an input voltage to the PFC based on a parameter regarding the driving current, a voltage compensator compensating an error of the driving voltage, a first current estimation unit estimating a variation of a charge of the capacitor based on the charge current and the phase angle variation estimated by the phase angle estimation unit, a second current estimation unit estimating a driving current variation, and a calculator calculating a duty ratio for the PWM based on the variation of the charge current estimated by the first current estimation unit and the driving current variation estimated by the second current estimation unit.

Abstract translation: 驱动器包括感测用于包括电容器，PWM，PFC和控制器的外部装置的驱动电流和驱动电压的传感器。 PFC包括相位角估计单元，其基于关于驱动电流的参数估计到PFC的输入电压的相位角变化，补偿驱动电压的误差的电压补偿器，第一电流估计单元估计 基于由相位角估计单元估计的充电电流和相位角变化的电容器的充电，第二电流估计单元估计驱动电流变化，以及计算器基于电荷变化计算PWM的占空比 由第一当前估计单元估计的电流和由第二电流估计单元估计的驱动电流变化。

公开(公告)号：US07420351B2

公开(公告)日：2008-09-02

申请号：US11559077

申请日：2006-11-13

Applicant: Petar Grbovic

Inventor： Petar Grbovic

IPC: H02P1/38

CPC classification number: H02M1/4225 ,  H02P27/08 ,  H02P2201/15 ,  Y02B70/126 ,  Y02P80/112

Abstract: A variable speed drive for a three-phase electric motor, including a rectifier module supplying a rectified voltage from a single-phase alternating current network, a voltage step-up module supplying a regulated bus voltage, and an inverter module supplying a control voltage to the motor. The variable speed drive includes a hybrid power-factor correction device that drives the voltage step-up module and that includes a digital circuit including a voltage step-up module supplying a correction signal based on a measurement signal of the bus voltage and an analog circuit supplying a driver signal to the step-up module based on a measurement signal of the rectified voltage and based on the correction signal.

Abstract translation: 一种用于三相电动机的变速驱动器，包括从单相交流网络提供整流电压的整流模块，提供调节总线电压的升压模块和向其提供控制电压的逆变器模块 电机。 变速驱动器包括驱动升压模块的混合功率因数校正装置，其包括数字电路，该数字电路包括基于总线电压的测量信号提供校正信号的升压模块和模拟电路 基于整流电压的测量信号，并且基于校正信号，向升压模块提供驱动器信号。

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：US20230318507A1

公开(公告)日：2023-10-05

申请号：US18192766

申请日：2023-03-30

Applicant: SEIKO EPSON CORPORATION

Inventor： Junpei NAKAYAMA

IPC: H02P27/08 ,  H02P23/26

CPC classification number: H02P27/08 ,  H02P23/26 ,  H02P2201/03 ,  H02P2201/11 ,  H02P2201/15

Abstract: A control apparatus includes a drive circuit unit to which regenerative electric power is input, a discharge resistance unit parallel-coupled to the drive circuit unit, to which the regenerative electric power is input from the drive circuit unit, and, when a voltage value of the regenerative electric power exceeds a threshold value, consuming electric power, a second converter circuit unit parallel-coupled to a first converter circuit unit and converting and outputting an alternating current into a direct current, a step-down circuit unit stepping down and outputting a voltage of the current output from the second converter circuit unit, an energization control circuit unit actuated by the direct current and controlling the drive circuit unit, and a regenerative electric power supply unit having a regenerative diode coupled to the discharge resistance unit and outputting a direct current of the regenerative electric power to the step-down circuit unit.