公开(公告)号：JP5316683B2

公开(公告)日：2013-10-16

申请号：JP2012164420

申请日：2012-07-25

Applicant: ダイキン工業株式会社

Inventor： 明敏 上野 ,  喜一郎 佐藤 ,  政賢 仲野

IPC: F25D11/00

CPC classification number: F25B49/02 ,  F25B2600/11 ,  F25B2700/151 ,  F25D29/003 ,  H02H7/0852 ,  H02P29/027 ,  H02P29/032

Abstract: The present invention increases the precision with which locking faults and disconnection faults are determined, and eliminates the erroneous detection of motor faults in a container refrigeration device which refrigerates the interior of a container. This container refrigeration device is equipped with a fault determination unit (44), which compares the value of the current flowing in an interior motor (1) with a preset threshold current value to determine motor faults in the interior motor (1), and a threshold value changing unit (45), which changes the threshold current value of the fault determination unit (44) in accordance with the power supply voltage for each power supply frequency of a power supply (42) that supplies power to the interior motor (1).

公开(公告)号：JP2013198185A

公开(公告)日：2013-09-30

申请号：JP2012059653

申请日：2012-03-16

Applicant: Denso Corp ,  株式会社デンソー

Inventor： FUKUDA JUNICHI ,  MAEHARA TSUNEO

IPC: H02M1/08 ,  H02M7/48

CPC classification number: H02H1/0007 ,  H02H7/16 ,  H02P29/027 ,  H02P29/028 ,  H02P29/032 ,  H03K17/0828 ,  H03K2217/0027

Abstract: PROBLEM TO BE SOLVED: To provide a drive circuit for a switching element capable of detecting occurrence of a defect in an overcurrent detection function of a switching element S*#.SOLUTION: A terminal T6 of a drive IC 20 is connected to a collector of a switching element S*# via a resistor 42 and a diode 44. A connection point of the resistor 42 and a capacitor 46 is connected to an emitter of the switching element S*# via the capacitor 46. In such a configuration, a drive circuit for the switching element S*# performs defect determination processing that determines whether a short-circuit defect occurs in the resistor 42 or the capacitor 46 or whether a leakage defect and the like occurs in the diode 44, on the basis of a voltage Vdesat of the terminal T6.

Abstract translation: 要解决的问题：提供一种用于检测开关元件S *＃的过电流检测功能中出现缺陷的开关元件的驱动电路。解决方案：驱动IC 20的端子T6连接到 开关元件S *＃经由电阻器42和二极管44.电阻器42和电容器46的连接点通过电容器46连接到开关元件S *＃的发射极。在这种配置中，驱动器 用于开关元件S *＃的电路执行基于电压Vdesat来确定电阻器42或电容器46中是否发生短路缺陷或者二极管44中是否发生漏电缺陷等的缺陷确定处理 的终端T6。

公开(公告)号：JP5265931B2

公开(公告)日：2013-08-14

申请号：JP2008006705

申请日：2008-01-16

Applicant: 矢崎総業株式会社

Inventor： 俊藏 大島

IPC: H02P29/00

CPC classification number: H02P7/29 ,  H02P29/0241 ,  H02P29/027 ,  Y10S388/903

Abstract: An electric power supply device capable of miniaturizing an FET and wiring and reducing the amount of heat generation even when a motor load goes into a lock state is provided. It is determined whether or not a lock current flows in a motor M1 by comparing various determination voltages with a voltage Vds between a drain and a source of a MOSFET (T1), and in the case of detecting that the lock current flows, an operation of turning off the MOSFET (T1) until a retry cycle ta elapses after turning on the MOSFET (T1) for only energization time tb for which lock torque can be caused is repeatedly executed. Then, when a motor current ID becomes smaller than the lock current, control of returning the MOSFET (T1) to a normal operation is performed. Consequently, the lock current can be prevented from flowing continuously.

公开(公告)号：JP2013085325A

公开(公告)日：2013-05-09

申请号：JP2011221839

申请日：2011-10-06

Applicant: Fuji Electric Co Ltd ,  富士電機株式会社

Inventor： TAKIZAWA AKITAKE

IPC: H02M7/483

CPC classification number: H02M7/483 ,  H02M1/32 ,  H02M7/487 ,  H02M2001/325 ,  H02P27/14 ,  H02P29/027 ,  H02P29/032 ,  H04M1/32

Abstract: PROBLEM TO BE SOLVED: To solve the problem of a power conversion circuit that, since continual operation is disabled when an element goes wrong, semiconductor switches must all be turned off to shut down the system after fault detection, so that a parallel redundant system composed of inverters connected in parallel may be created when continual operation is needed as in the case of a UPS, which, however, results in an increase in the equipment size or in the system cost.SOLUTION: In a three-level power conversion circuit using a plurality of one phase-equivalent switching circuits, each consisting of a semiconductor switch series circuit connected in parallel to a series-connected DC power supply and a bidirectional switch connected between the series connection point thereof and the series connection point of the DC power supply, means is provided which, when a semiconductor element constituting one of the bidirectional switches breaks down, electrically opens a path in which the main current of the semiconductor element flows, so that the circuit, with its remaining bidirectional switches normally turned off, is continually operated as a two-level inverter.

Abstract translation: 要解决的问题为了解决电力转换电路的问题，由于当元件出错时连续运行被禁止，所以在故障检测之后，半导体开关必须全部关闭以关闭系统，从而平行 当UPS需要连续运行时，可能会产生由并联连接的逆变器组成的冗余系统，但UPS会导致设备尺寸或系统成本的增加。 解决方案：在使用多个一个相等效开关电路的三电平电力转换电路中，每个都由与串联的直流电源并联连接的半导体开关串联电路和连接在串联的直流电源之间的双向开关 串联连接点和直流电源的串联连接点，提供了当构成双向开关之一的半导体元件故障时电气地打开半导体元件的主电流流动的路径的装置，使得 电路，其剩余的双向开关通常关闭，作为两电平逆变器连续工作。 版权所有（C）2013，JPO＆INPIT

公开(公告)号：JP2013050294A

公开(公告)日：2013-03-14

申请号：JP2012164420

申请日：2012-07-25

Applicant: Daikin Industries Ltd ,  ダイキン工業株式会社

Inventor： UENO AKITOSHI ,  SATO KIICHIRO ,  NAKANO MASATOSHI

IPC: F25D11/00

CPC classification number: F25B49/02 ,  F25B2600/11 ,  F25B2700/151 ,  F25D29/003 ,  H02H7/0852 ,  H02P29/027 ,  H02P29/032

Abstract: PROBLEM TO BE SOLVED: To provide a container refrigeration device for refrigerating the interior of a container that increases the precision with which locking faults and disconnection faults of a motor are determined, and eliminates the erroneous detection of motor faults.SOLUTION: The container refrigeration device includes a fault determination part (44), which compares the value of the current flowing in an interior motor (1) with a preset threshold current value to determine motor faults in the interior motor (1), and a threshold value changing part (45), which changes the threshold current value of the fault determination part (44) in accordance with the power supply voltage for each power supply frequency of a power supply (42) that supplies power to the interior motor (1).

Abstract translation: 要解决的问题：提供一种用于冷却容器内部的容器制冷装置，其提高确定电动机的锁定故障和断开故障的精度，并且消除对电动机故障的错误检测。 解决方案：容器制冷装置包括故障确定部分（44），其将在内部马达（1）中流动的电流的值与预设的阈值电流值进行比较，以确定内部马达（1）中的电机故障， ，以及阈值变更部（45），其根据向内部供给电源（42）的各电源频率的电源电压来改变故障判定部（44）的阈值电流值 电动机（1）。 版权所有（C）2013，JPO＆INPIT

公开(公告)号：JPWO2011048683A1

公开(公告)日：2013-03-07

申请号：JP2011537064

申请日：2009-10-22

Applicant: 三菱電機株式会社

Inventor： 河野　雅樹 ,  雅樹 河野 ,  健一 草野 ,  健一 草野 ,  良範 山下 ,  良範 山下 ,  英俊 北中 ,  英俊 北中 ,  啓太 畠中 ,  啓太 畠中

IPC: H02P27/06 ,  B60L3/00 ,  B60L9/18 ,  H02M7/48

CPC classification number: B60L3/003 ,  B60L2200/26 ,  B60L2220/14 ,  H02H7/0838 ,  H02H7/122 ,  H02H7/1225 ,  H02M1/32 ,  H02M7/53875 ,  H02P29/027 ,  Y02T10/642

Abstract: スイッチング素子Gu〜Gzを有し同期機1を駆動する電力変換器2と、開閉部4と、電流検出部3a〜3cと、電流検出器3a〜3cが検出した電流に基づきスイッチング素子Gu〜Gzのオンオフ制御と開閉部4に対する開閉制御とを行う制御部6と、を備える電力変換装置であって、制御部6は、スイッチング素子Gu〜Gzのいずれが短絡故障となっているかを検出し、検出結果を示す信号を出力する故障検出部9と、短絡故障となっている第1の相(例えば、U相)以外の相(V相またはW相)を構成するスイッチング素子の1つをオン動作状態にすると共に、開閉部4を開放するための信号を出力するON/OFF制御部7と、第1の相、および、ON/OFF制御部7によってスイッチング素子の1つがオン動作状態になった第2の相(例えば、W相)、以外の第3の相(例えば、V相)に接続されたV相開閉部4bを開放する開閉制御部8と、を有する。

公开(公告)号：JP2012090493A

公开(公告)日：2012-05-10

申请号：JP2010237411

申请日：2010-10-22

Applicant: Sanyo Electric Co Ltd ,  三洋電機株式会社

Inventor： KOTANI KAZUNORI ,  HAYASHI IRORI

IPC: H02P7/06

CPC classification number: H02P29/027 ,  H02P7/06 ,  H02P29/032

Abstract: PROBLEM TO BE SOLVED: To provide a motor drive device capable of easily protecting a motor when the motor is in a constraint state.SOLUTION: A motor drive portion 890 includes: a motor driver 891 which has an input port 891a to which a reference voltage Vs is inputted, generates drive voltage based on the reference voltage Vs from power supply voltage supplied from a power supply portion 90 and supplies it to a motor 506; and a protection circuit 893 switching the reference voltage Vs so that the drive voltage becomes small when a size of current flowing in the motor 506 exceeds a prescribed upper limit current level. The protection circuit 893 takes out the size of current flowing in the motor driver 891 from the power supply portion 90 as the size of the current flowing in the motor 506.

Abstract translation: 要解决的问题：提供一种当电动机处于约束状态时能够容易地保护电动机的电动机驱动装置。 电动机驱动部分890包括：电动机驱动器891，其具有输入基准电压Vs的输入端口891a，从供电部分提供的电源电压产生基于参考电压Vs的驱动电压 90并将其提供给电动机506; 以及保护电路893切换参考电压Vs，使得当在电动机506中流动的电流的大小超过规定的上限电流水平时，驱动电压变小。 保护电路893取出电动机驱动器891中从电源部分90流出的电流大小，作为流过电动机506的电流的大小。（C）2012，JPO＆INPIT

公开(公告)号：JP4916037B2

公开(公告)日：2012-04-11

申请号：JP2010151846

申请日：2010-07-02

Applicant: 株式会社ナカニシ

Inventor： 秀樹 岡本

IPC: A61C1/06

CPC classification number: H02P29/027 ,  A61C1/0015 ,  A61C1/06 ,  A61C1/186

公开(公告)号：JP2012011068A

公开(公告)日：2012-01-19

申请号：JP2010151846

申请日：2010-07-02

Applicant: Nakanishi:Kk ,  株式会社ナカニシ

Inventor： OKAMOTO HIDEKI

IPC: A61C1/06

CPC classification number: H02P29/027 ,  A61C1/0015 ,  A61C1/06 ,  A61C1/186

Abstract: PROBLEM TO BE SOLVED: To provide a motor control method for a dental handpiece that prevents breakage of a cutting tool and reduces a sense of discomfort when rotation of the cutting tool stops.SOLUTION: The motor control method for a dental handpiece provided with a motor for rotationally driving the cutting tool includes the steps of: (a) limiting, when load torque to be applied on the cutting tool reaches a preset limit torque value, the motor current to a first limit current (I1); and (b) reduces, when stop of rotation of the motor is detected, the motor to a second limit current (I2) smaller than the first limit current (I1).

Abstract translation: 要解决的问题：提供一种用于防止切割工具断裂的牙齿手柄的马达控制方法，并且当切割工具的旋转停止时减少不适感。 解决方案：设置有用于旋转驱动切削工具的马达的牙齿手柄的马达控制方法包括以下步骤：（a）限制当施加在切削刀具上的负载转矩达到预设极限转矩值时， 电动机电流达到第一限制电流（I1）; 和（b）当检测到电动机停止转动时，使电动机减小到小于第一极限电流（I1）的第二极限电流（I2）。 版权所有（C）2012，JPO＆INPIT

公开(公告)号：JP2009171728A

公开(公告)日：2009-07-30

申请号：JP2008006705

申请日：2008-01-16

Applicant: Yazaki Corp ,  矢崎総業株式会社

Inventor： OSHIMA SHUNZO

IPC: H02P29/00

CPC classification number: H02P7/29 ,  H02P29/0241 ,  H02P29/027 ,  Y10S388/903

Abstract: PROBLEM TO BE SOLVED: To provide a power supply apparatus capable of achieving miniaturization in FET and wiring by reducing a calorific value even if a motor load is in a lock state. SOLUTION: By comparing a voltage Vds between a drain and a source of MOSFET(T1) with various types of determination voltages, it is determined whether a lock current flows through a motor M1. When the flowing of the lock current is detected, the MOSFET(T1) is turned on for an energization period tb enough to generate a lock torque and then repeatedly performing an operation of turning off until a retry cycle ta elapses. When a motor current ID is a lock current or lower, the MOSFET(T1) is controlled to be returned to an ordinary operation. Thus, the lock current can be prevented from continuously flowing. COPYRIGHT: (C)2009,JPO&INPIT

Abstract translation: 要解决的问题：即使电动机负载处于锁定状态，提供能够通过降低发热量来实现FET和配线的小型化的供电装置。 解决方案：通过将MOSFET（T1）的漏极和源极之间的电压Vds与各种类型的确定电压进行比较，确定锁定电流是否流过电动机M1。 当检测到锁定电流的流动时，MOSFET（T1）接通足够的通电时间tb以产生锁定转矩，然后重复执行关闭操作，直到重试循环为止。 当电动机电流ID为锁定电流或更低电压时，MOSFET（T1）被控制回到正常操作。 因此，可以防止锁定电流持续流动。 版权所有（C）2009，JPO＆INPIT