公开(公告)号：US20230087561A1

公开(公告)日：2023-03-23

申请号：US17795358

申请日：2021-03-16

Applicant: DANFOSS A/S

Inventor： Lin Xiang SUN ,  Tianlei LI ,  Brandon Keith PRITCHARD

IPC: F25B31/00 ,  F04B39/06 ,  F25B41/20 ,  F25B5/02 ,  H02K11/33 ,  H02P1/28 ,  H02P1/52 ,  F04B35/04 ,  F25B1/053 ,  F25B1/10

Abstract: This disclosure relates to refrigerant compressors, and, in particular, relates to cooling for the power electronics of such compressors. An example refrigerant system includes a main refrigerant loop in communication with a condenser, an evaporator, and a compressor. The refrigerant system further includes at least one cooling line configured to direct refrigerant from the main refrigerant loop to cool a chamber containing electronic components. A method is also disclosed.

公开(公告)号：US11139649B2

公开(公告)日：2021-10-05

申请号：US15854118

申请日：2017-12-26

Applicant: Eaton Intelligent Power Limited

Inventor： Huaqiang Li ,  Joseph Paul Uphaus

IPC: H02H7/122 ,  H02P27/06 ,  H02M7/00 ,  H02M5/458 ,  H02P27/02 ,  H02M7/5387 ,  H02M1/32 ,  H02P3/18 ,  H02H3/16 ,  H02P1/30 ,  H02H3/033 ,  H02P1/28 ,  H02H3/06

Abstract: A motor control system includes a motor switching assembly comprising a power converter positioned on a converter path, a first relay positioned on the converter path upstream of the power converter, a second relay positioned on a bypass path that is in parallel with the converter path, and a solid-state switching unit positioned upstream from the converter path and the bypass path. The motor control system also includes a control system that controls operation of the motor switching assembly, with the control system programmed to operate the solid-state switching unit in one of a conducting mode, a non-conducting mode, and a ramping mode, so as to selectively control and condition power flow therethrough. The control system is also programmed to control switching of the first and second relays between open and closed positions to selectively route power along the converter path or the bypass path.

公开(公告)号：US10931197B2

公开(公告)日：2021-02-23

申请号：US16537660

申请日：2019-08-12

Applicant: DENSO CORPORATION

Inventor： Tatsuya Murakami ,  Yuu Yamahira ,  Kengo Mochiki

IPC: H02P1/00 ,  H02P1/28 ,  H02P3/00 ,  H02P7/06 ,  H02M3/158 ,  H02P27/06 ,  H02M1/08 ,  B60K6/22 ,  B60L50/50

Abstract: A power conversion device, mounted on a motor vehicle, has a battery, a power converter, a reactor and a control unit. The power conversion device boosts a battery voltage of the battery, and supplies a boosted voltage to a motor generator mounted on a motor vehicle. The power conversion device transmits electric power generated by the motor generator and supplies the generated electric power to the battery through the power converter. The power converter has an upper arm and a lower arm. The upper arm has upper arm side switching elements. The lower arm has lower arm side switching elements which are directly connected to the respective upper arm side switching elements. At least one of the upper arm side switching elements is composed of a MOS FET and at least one of the lower arm side switching elements is composed of an IGBT.

公开(公告)号：US10554155B2

公开(公告)日：2020-02-04

申请号：US16132659

申请日：2018-09-17

Applicant: Schneider Toshiba Inverter Europe SAS

Inventor： Francois Malrait ,  Mehdi Messaoudi

IPC: H02P1/28 ,  H02P27/06 ,  H02P29/032

Abstract: A control method for verifying the compatibility between an input filter and a variable speed drive. The method includes applying a plurality of successive commands so as to define a plurality of operating points of the electric motor, for each operating point, measuring the DC voltage of the bus, comparing the maximum variation in the amplitude of the DC voltage measured for the operating point with a threshold value, defining a new operating point as long as the maximum variation in the amplitude of the DC voltage is lower than the threshold value, determining an operating range including all of the operating points for which the maximum variation in the amplitude of the DC voltage is lower than the threshold value.

公开(公告)号：US09735773B2

公开(公告)日：2017-08-15

申请号：US14264522

申请日：2014-04-29

Applicant: Allegro Microsystems, LLC

Inventor： James McIntosh ,  Robert D. Christie ,  Douglas Bryce ,  Walter Morrison Stewart Wilson

IPC: H02P1/00 ,  H02P1/28 ,  H02P3/00 ,  H02P7/06 ,  H02P7/14 ,  H02P23/00 ,  H02P25/00 ,  H02P27/00 ,  H03K17/687 ,  H02P31/00 ,  G01R19/165 ,  H02P8/12 ,  B26B19/00 ,  B26B19/06 ,  A61B17/16

CPC classification number: H03K17/6871 ,  A61B17/1626 ,  B26B19/00 ,  B26B19/06 ,  G01R19/16538 ,  G01R19/16571 ,  H02P8/12 ,  H02P31/00

Abstract: Systems and techniques detecting a reverse current are disclosed. An apparatus comprises a switching circuit coupled to a load and a reference node. The switching circuit may be capable of conducting a reverse current from the reference node to the load when a voltage at the load is lower than a voltage at the reference node. A voltage source has a first terminal coupled to the load, a second terminal configured to follow a voltage at the load, and produces a voltage proportional to a voltage drop across the switching circuit. A comparator circuit is coupled to compare a voltage at the second terminal of the voltage source to the voltage at the reference node and configured to indicate when the reverse current has a magnitude greater than a predetermined threshold.

公开(公告)号：US09407134B2

公开(公告)日：2016-08-02

申请号：US14247442

申请日：2014-04-08

Applicant: Baker Hughes Incorporated

Inventor： Amin A. Moghadas ,  John M. Leuthen ,  Renato L. Pichilingue ,  Patrick B. Cochran

IPC: H02P1/00 ,  H02P1/28 ,  H02P3/00 ,  H02P7/06 ,  H02M1/32 ,  H02M1/36 ,  H02M7/162 ,  H02M7/219 ,  H02M5/45 ,  H02M5/458 ,  H02M1/42

CPC classification number: H02M1/32 ,  H02M1/36 ,  H02M5/4505 ,  H02M5/4585 ,  H02M7/1626 ,  H02M7/219 ,  H02M2001/4291 ,  Y02B70/126

Abstract: Systems and methods for controlling potentially damaging inrushes of current to the capacitor bank of an electric drive system when the voltage on the capacitor bank is low. In one embodiment, a variable speed drive has a converter that converts AC power to DC power, a capacitor bank that receives the DC power, and an inverter that converts the DC power stored by the capacitor bank to AC output power. The converter has three sections that rectify the phases of three-phase input power. Each section has at least one controlled rectifier component, and the rectifier components have switches connected to them in parallel. When the voltage on the capacitor bank is low, the controlled rectifiers and switches are controlled to prevent dangerously high inrushes of current to the capacitor bank.

Abstract translation: 当电容器组上的电压低时，用于控制电驱动系统的电容器组的电流的潜在损坏的系统和方法。 在一个实施例中，变速驱动器具有将AC功率转换为DC电力的转换器，接收DC电力的电容器组以及将由电容器组存储的DC电力转换为AC输出功率的逆变器。 该转换器有三个部分来纠正三相输入电源的相位。 每个部分具有至少一个可控整流器部件，并且整流器部件具有并联连接到它们的开关。 当电容器组上的电压低时，控制的整流器和开关被控制，以防止对电容器组的电流的危险的高浪涌。

公开(公告)号：US09124210B2

公开(公告)日：2015-09-01

申请号：US14250773

申请日：2014-04-11

Applicant: FANUC CORPORATION

Inventor： Kenta Yamamoto

IPC: H02P1/00 ,  H02P1/28 ,  H02P3/00 ,  H02P27/08 ,  H02P29/02 ,  H02P3/14 ,  H02P27/06

CPC classification number: H02P27/08 ,  H02P3/14 ,  H02P27/06 ,  H02P29/025

Abstract: A motor control apparatus includes: a PWM rectifier; an inverter; a detection unit for detecting an AC voltage value of the PWM rectifier; a calculation unit for calculating a power supply voltage phase; a detection unit for detecting an AC current value of the PWM rectifier; a current loop control unit for generating an AC voltage command to control a power conversion operation of the PWM rectifier; a current loop saturation state determination unit for determining to be in a current loop saturation state when a magnitude of the AC voltage command is equal to or larger than a predetermined voltage prescribed value; an operation determination unit for determining whether the PWM rectifier is in a powering operation or in a regenerative operation and a power failure determination unit for determining a presence or absence of a power failure at the AC power supply side from the determination results.

Abstract translation: 一种电动机控制装置，包括：PWM整流器; 逆变器 用于检测PWM整流器的AC电压值的检测单元; 用于计算电源电压相位的计算单元; 检测单元，用于检测PWM整流器的AC电流值; 电流回路控制单元，用于产生用于控制PWM整流器的功率转换操作的AC电压指令; 电流环饱和状态确定单元，用于当所述交流电压指令的大小等于或大于预定电压规定值时，确定为当前环路饱和状态; 用于确定PWM整流器是处于供电操作还是再生操作的动作确定单元，以及用于从所述确定结果确定所述交流电源侧是否存在电力故障的停电判定单元。

公开(公告)号：US08390238B2

公开(公告)日：2013-03-05

申请号：US13483443

申请日：2012-05-30

Applicant: Magnus Ek ,  Heinz Lendenmann ,  Jesper Kristensson

Inventor： Magnus Ek ,  Heinz Lendenmann ,  Jesper Kristensson

IPC: H02P1/28

CPC classification number: H02P1/26 ,  H02M1/34 ,  H02M2001/0006 ,  H02M2001/0032 ,  H02P1/28 ,  H02P3/18 ,  H02P3/24 ,  Y02B70/16

Abstract: A softstarter for starting and stopping an asynchronous motor having three phases, including two pairs of semiconductor devices of the type turning off at zero-crossing of the current therethrough, wherein each of the two pairs of semiconductor devices is connected in anti-parallel, and the first pair of the semiconductor devices is adapted to control the voltage of one of the phases of the motor and the second pair of the semiconductor devices being adapted to control the voltage of another of the phases of the motor, a DC reducing unit associated with the two pairs of semiconductor devices, a first voltage measuring unit for measuring voltages across the two pairs of semiconductor devices, and a first zero-crossing detecting unit configured for detecting zero-crossings of the measured voltages across the two pairs of semiconductor devices and providing zero-crossing signals to the DC reducing unit.

Abstract translation: 一种用于启动和停止具有三相的异步电动机的软起动器，包括两对半导体器件，其类型在电流过零点处截止，其中两对半导体器件中的每一对以反并联方式连接，并且 所述第一对所述半导体器件适于控制所述电动机的一个相的电压，并且所述第二对所述半导体器件适于控制所述电动机的另一个相的电压;与 两对半导体器件，用于测量跨越两对半导体器件的电压的第一电压测量单元，以及第一过零检测单元，被配置为检测跨越两对半导体器件的测量电压的过零点，并提供 过零信号到DC减小单元。

公开(公告)号：US08203304B2

公开(公告)日：2012-06-19

申请号：US11897871

申请日：2007-08-31

Applicant: Haihui Lu ,  David M. Messersmith ,  Thomas A. Nondahl

Inventor： Haihui Lu ,  David M. Messersmith ,  Thomas A. Nondahl

IPC: H02P1/28 ,  H02M7/155

CPC classification number: H02P23/0004

Abstract: Systems, methods, and devices are disclosed, including an induction-motor controller having a phase path; a solid-state switch interposed on the phase path; and a controller coupled to the solid-state switch. In certain embodiments, the controller is configured to switch the solid-state switch so that the solid-state switch is conductive during a conduction angle of a cycle of an incoming AC power waveform conveyed by the phase path, calculate the conduction angle based on a generally sinusoidal reference value that has a frequency lower than a frequency of the incoming AC power waveform, and adjust the generally sinusoidal reference value based on a value indicative of flux in a load coupled to the phase path.

Abstract translation: 公开了包括具有相位路径的感应电动机控制器的系统，方法和装置; 插在相位路径上的固态开关; 以及耦合到固态开关的控制器。 在某些实施例中，控制器被配置为切换固态开关，使得固态开关在由相位路径传送的输入AC功率波形的周期的导通角期间导通，基于 具有低于输入AC功率波形的频率的频率的大致正弦参考值，并且基于表示耦合到相位路径的负载中的通量的值来调整大致正弦参考值。

公开(公告)号：US07554796B2

公开(公告)日：2009-06-30

申请号：US11654367

申请日：2007-01-17

Applicant: Joseph C. Coffey ,  Bradley Blichfeldt

Inventor： Joseph C. Coffey ,  Bradley Blichfeldt

IPC: G01F1/26 ,  H02P1/28

CPC classification number: H02H3/006 ,  H02H3/08 ,  H02H3/10 ,  H02J1/08 ,  H02J1/108 ,  H02M3/1584 ,  H05K7/1439 ,  H05K7/1457 ,  H05K7/1459 ,  Y10T307/492 ,  Y10T307/50 ,  Y10T307/653

Abstract: A modular power distribution system comprises a chassis; and a backplane including a power input, and a plurality of module connection locations. A plurality of modules are mounted in the chassis, each module mounted to one of the module connection locations. Each module includes: (i) an OR-ing diode; (ii) a circuit protection device; (iii) a microprocessor controlling the circuit protection device; and (iv) a power output connection location. A circuit option switch is located on each module for setting the current limits for each module. A control module is provided connected to the backplane.

Abstract translation: 模块化配电系统包括底盘; 以及包括电源输入和多个模块连接位置的背板。 多个模块安装在机架中，每个模块安装到模块连接位置之一。 每个模块包括：（i）OR-二极管; （ii）电路保护装置; （iii）控制电路保护装置的微处理器; 和（iv）电力输出连接位置。 电路选项开关位于每个模块上，用于设置每个模块的电流限制。 提供连接到背板的控制模块。