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。

公开(公告)号：US20150280632A1

公开(公告)日：2015-10-01

申请号：US14667762

申请日：2015-03-25

Applicant: FANUC CORPORATION

Inventor： Wataru Kuroki

IPC: 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。

公开(公告)号：US20150028786A1

公开(公告)日：2015-01-29

申请号：US14376691

申请日：2013-01-28

Applicant: SEW-EURODRIVE GMBH & CO. KG

Inventor： Sebastian Schiffmann ,  Josef Schmidt ,  Matthias Hauck ,  Christian Lampert ,  Daniel Tritschler ,  Thomas Zöller

IPC: H02P27/06 ,  H02H9/04

CPC classification number: H02P27/06 ,  H02H9/045 ,  H02J7/345 ,  H02M5/458 ,  H02P2201/03

Abstract: A drive system with energy store and method for operating a drive system, an inverter powering an electric motor, the inverter being supplied from a unipolar DC-link voltage, an energy store being connected in parallel to the inverter, in particular, a film capacitor being connected in parallel to the inverter, the DC-link voltage being generated by a DC/DC converter which is supplied from an AC/DC converter, especially a rectifier, in particular, an electric current being able to be supplied to the DC link by the DC/DC converter.

Abstract translation: 具有用于操作驱动系统的能量存储和方法的驱动系统，为电动机供电的逆变器，逆变器由单极DC链路电压提供，与逆变器并联连接的能量存储器，特别是薄膜电容器 与逆变器并联连接的DC链路电压由DC / DC转换器产生，该DC / DC转换器由AC / DC转换器，特别是整流器提供，特别是能够提供给DC链路的电流 由DC / DC转换器。

公开(公告)号：US08653783B2

公开(公告)日：2014-02-18

申请号：US13978813

申请日：2011-03-31

Applicant: Manabu Ohashi ,  Kazuya Nakamura

Inventor： Manabu Ohashi ,  Kazuya Nakamura

IPC: H02P23/00

CPC classification number: H02P3/18 ,  H02M3/1582 ,  H02P27/06 ,  H02P2201/03 ,  H02P2201/07 ,  Y02P80/116

Abstract: A circuit switching element is provided that switches a step-up/step-down bidirectional chopper circuit, arranged between a DC bus and a power storage element, to a first chopper circuit or to a second chopper circuit, whose step-up and step-down characteristics are in a complementary relation. The first and second chopper circuits are used together at a time of charge and discharge. Accordingly, an AC motor drive device having mounted therein a power storage system is obtained, in which the power storage system can perform charge and discharge to and from the power storage element, regardless of a bus voltage and can increase energy use efficiency.

Abstract translation: 提供了一种电路开关元件，其将设置在DC总线和电力存储元件之间的升压/降压双向斩波电路切换到第一斩波电路或第二斩波电路，该第二斩波电路的升压和 下降特征是互补关系的。 第一和第二斩波电路在充放电时一起使用。 因此，获得了其中安装有蓄电系统的交流电动机驱动装置，其中蓄电系统可以与蓄电元件进行充电和放电，而不管总线电压如何，并且可以提高能量使用效率。

公开(公告)号：US20130181654A1

公开(公告)日：2013-07-18

申请号：US13352793

申请日：2012-01-18

Applicant: Gregory I. Rozman ,  Thomas A. Duclos ,  Duane A. James

Inventor： Gregory I. Rozman ,  Thomas A. Duclos ,  Duane A. James

IPC: H02P27/00

CPC classification number: H02M5/4585 ,  H02M1/12 ,  H02P27/085 ,  H02P2201/03 ,  H02P2201/15

Abstract: An active rectifier controller controls operation of an active rectifier employed in a power conversion system that supplies a direct current (DC) output to an inverter that converts the DC output to an AC output supplied to an AC motor. The active rectifier controller includes a field-oriented control (FOC) controller that monitors an alternating current (AC) input currents provided to the active rectifier, the DC output provided to the inverter, and speed of the AC motor. The FOC controller selects a reference DC output value based on the speed of the AC motor and compares the monitored DC output to the reference DC output as part of the FOC control algorithm used to generate control signals. A PWM signal generator generates PWM signals for controlling the active rectifier based on the control signals.

Abstract translation: 有源整流器控制器控制在将直流输出转换为提供给交流电动机的交流输出的逆变器提供直流（DC）输出的电力转换系统中使用的有源整流器的操作。 有源整流器控制器包括一个磁场定向控制（FOC）控制器，用于监控提供给有源整流器的交流（AC）输入电流，提供给逆变器的直流输出以及交流电动机的速度。 FOC控制器基于交流电机的速度选择参考直流输出值，并将监控的直流输出与参考直流输出进行比较，作为用于产生控制信号的FOC控制算法的一部分。 PWM信号发生器根据控制信号生成用于控制有源整流器的PWM信号。

公开(公告)号：US20120281446A1

公开(公告)日：2012-11-08

申请号：US13510761

申请日：2010-11-17

Applicant: Fabio Magini ,  Paul Mehringer ,  Alexander Shendi ,  Andeas Windmueller ,  Ralf Herbig

Inventor： Fabio Magini ,  Paul Mehringer ,  Alexander Shendi ,  Andeas Windmueller ,  Ralf Herbig

IPC: H02M7/06

CPC classification number: H02P9/10 ,  H02J7/1461 ,  H02P29/0241 ,  H02P2101/45 ,  H02P2201/03

Abstract: In a method for reducing load dump overvoltages during operation of a synchronous rectifier for a polyphase alternating current having a number of inputs which correspond to the number of alternating current phases of the alternating current, and having at least two outputs for providing a direct current, an alternating current phase is connected to each of the inputs, and each of the inputs are electrically optionally connected via active switching elements to either the first or the second output in accordance with a control unit.

Abstract translation: 在用于具有多个输入的多相交流电的同步整流器运行期间减小负载突降过电压的方法中，所述多相交流电流对应于所述交流电的交流电流相的数量，并具有用于提供直流电流的至少两个输出， 交流电相位连接到每个输入，并且每个输入根据控制单元电可选地通过有源开关元件连接到第一或第二输出。