公开(公告)号：JP2014023373A

公开(公告)日：2014-02-03

申请号：JP2012162472

申请日：2012-07-23

Applicant: Meidensha Corp ,  株式会社明電舎

Inventor： SUZUKI TETSUJI

IPC: H02P29/02 ,  H02H11/00 ,  H02J1/00 ,  H02P7/29

CPC classification number: H02P3/14 ,  B60L3/0046 ,  H02H11/002 ,  H02J7/0063 ,  H02M1/32 ,  H02M7/797 ,  H02P29/02 ,  H02P29/027 ,  Y02T10/642

Abstract: PROBLEM TO BE SOLVED: To provide a motor drive circuit that allows preventing the short-circuit of a battery when the battery is reverse-connected, does not generate an unnecessary voltage drop, and allows regenerating energy of a motor to the battery.SOLUTION: A main control circuit 11 for motor drive includes: a Pch-type FET T11 provided in series to a diode D1, having a source S connected to a secondary-side contact point MC2 of a main contact MC, and having a drain D connected to an anode A of the diode D1; and a gate-voltage generating circuit 12 for the Pch-type FET T11 including a first resistor R11 having one end R11a connected to the source S of the Pch-type FET T11 and having the other end R11b connected to a gate G of the Pch-type FET T11, and a second resistor R12 having one end R12a connected to the gate G of the Pch-type FET T11 and having the other end R12b connected to a battery-negative-side line L2.

Abstract translation: 要解决的问题：为了提供一种马达驱动电路，其能够防止电池反向连接时的电池短路，不产生不必要的电压降，并且允许电动机对电池的再生能量。解决方案： 用于电动机驱动的主控制电路11包括：与二极管D1串联设置的Pch型FET T11，源极S连接到主触点MC的次级侧接触点MC2，并且漏极D连接到 二极管D1的阳极A; 以及用于Pch型FET T11的栅极电压产生电路12，包括具有连接到Pch型FET T11的源极S的一端R11a并且连接到Pch的栅极G的另一端R11b的第一电阻器R11 型FET T11和第二电阻器R12，其一端R12a连接到Pch型FET T11的栅极G，并且另一端R12b连接到电池负极侧线L2。

公开(公告)号：JP5256009B2

公开(公告)日：2013-08-07

申请号：JP2008316348

申请日：2008-12-12

Applicant: 日立アプライアンス株式会社 ,  株式会社日立産機システム

Inventor： 和明 戸張 ,  保夫 能登原 ,  渉 初瀬 ,  東昇 李 ,  健太郎 大井 ,  裕治 船山

IPC: H02P6/12 ,  H02P6/16 ,  H02P6/18 ,  H02P21/00 ,  H02P27/04

CPC classification number: H02P6/085 ,  H02P21/22 ,  H02P25/024 ,  H02P29/027 ,  H02P2207/05 ,  H02P2209/07

公开(公告)号：JP2013110820A

公开(公告)日：2013-06-06

申请号：JP2011252784

申请日：2011-11-18

Applicant: Jtekt Corp ,  株式会社ジェイテクト

Inventor： KAWAMURA HIROSHI ,  MIKAMO SATORU ,  ITO TAKEHIRO

IPC: H02P23/00 ,  B62D5/04 ,  B62D6/00 ,  B62D101/00 ,  B62D119/00

CPC classification number: B62D5/0487 ,  H02P29/027

Abstract: PROBLEM TO BE SOLVED: To provide a motor controller capable of more certainly detecting an abnormality which occurs to a transistor of an inverter circuit.SOLUTION: A motor controller 15 supplies a three-phase alternating current to a motor 11 by controlling switching of the pair of transistors T1-T6 which are provided in an inverter circuit 20. Moreover, the motor controller 15 detects respective phase current values supplied to the motor 11 through current sensors 30u, 30v, 30w, and stops driving the inverter circuit 20 when it is determined that penetration current has occurred to the transistors T1-T6 on the basis of the detected respective phase current values. A first threshold value is set to respective phase current values, and a second threshold value is set to a total of the respective phase current values. When at least one of absolute values of the respective phase current values is the first threshold value or higher and the absolute value of the total of the respective phase current values is the second threshold value or higher, it is determined that the penetration current has occurred to the transistors T1-T6.

Abstract translation: 要解决的问题：提供一种能够更可靠地检测发生在逆变器电路的晶体管上的异常的电动机控制器。 解决方案：电动机控制器15通过控制设置在逆变器电路20中的一对晶体管T1-T6的开关来向电动机11供给三相交流电。此外，电动机控制器15检测相电流 通过电流传感器30u，30v，30w提供给电动机11的值，并且根据检测到的各相电流值确定对晶体管T1-T6发生了穿透电流时，停止驱动逆变器电路20。 将第一阈值设置为各自的相电流值，并将第二阈值设置为各个相电流值的总和。 当各相电流值的绝对值中的至少一个为第一阈值以上且各相电流值的合计的绝对值为第二阈值以上时，判断为穿透电流已经发生 到晶体管T1-T6。 版权所有（C）2013，JPO＆INPIT

公开(公告)号：JP2011188581A

公开(公告)日：2011-09-22

申请号：JP2010048994

申请日：2010-03-05

Applicant: Hitachi Industrial Equipment Systems Co Ltd ,  株式会社日立産機システム

Inventor： IBORI SATOSHI ,  NAKAMURA ATSUHIKO ,  TOMITA HIROYUKI

IPC: H02M7/48 ,  H02H7/085 ,  H02H7/122 ,  H02P27/06

CPC classification number: H02M1/32 ,  H02M1/36 ,  H02M7/53875 ,  H02P27/06 ,  H02P29/027 ,  H02P29/032 ,  H02P29/60

Abstract: PROBLEM TO BE SOLVED: To provide an inverter which has an accurate electron thermal energy time limit characteristic considering actual temperature rise and fall in an electric motor under overload and under normal load, and to provide an overload protection method. SOLUTION: The inverter includes: a rectifier which converts AC into DC; a power inverter which converts DC into AC power of variable voltage and variable frequency, an AC motor of which speed is controlled by the AC power; a current detector which detects a current of the AC motor; and a controller which controls each portion according to a current detected by the current detector. The controller has an adder/subtracter which electronically adds when the AC motor is operating in overload and subtracts a weighting commensurate with the squared time product of the detected current by the current detector during the overload from the cumulative value obtained by addition during overload when the AC motor is not operating in overload, and an electron thermal energy time limit unit which stops the AC motor in the event of an overload operation, based on the integrated value in the adder/subtracter and the preset electron thermal energy time limit characteristics. COPYRIGHT: (C)2011,JPO&INPIT

Abstract translation: 要解决的问题：提供一种考虑到实际温度上升和在过载和正常负载下电动马达落下的精确的电子热能时间特性的逆变器，并提供过载保护方法。

解决方案：逆变器包括：将AC转换成直流的整流器; 将DC转换成可变电压和可变频率的交流电源的电力逆变器，由交流电源控制速度的交流电动机; 检测交流电动机的电流的电流检测器; 以及控制器，其根据由电流检测器检测的电流来控制各部分。 该控制器具有加法器/减法器，当交流电动机工作在过载状态时电子加法，并且在过载期间减去由过电流检测器检测的电流的平方时间乘以与过载期间的相加累积值相加的加权/减法器， 交流电动机不工作在过载状态，以及基于加法器/减法器中的积分值和预设的电子热能时间特性，在过载操作的情况下停止交流电动机的电子热能时间限制单元。 版权所有（C）2011，JPO＆INPIT

公开(公告)号：JP4647684B2

公开(公告)日：2011-03-09

申请号：JP2008502765

申请日：2007-06-28

Applicant: 三菱電機株式会社

Inventor： 英俊 北中

IPC: H02P27/06

CPC classification number: H02P27/06 ,  B60L3/003 ,  B60L3/0061 ,  B60L2200/26 ,  H02P29/0241 ,  H02P29/0243 ,  H02P29/027 ,  H02P29/032 ,  Y02T10/642

Abstract: To prevent damage of a power converter that drives a permanent-magnet synchronous motor provided in an electric vehicle or the permanent-magnet synchronous motor from becoming worse. An opening/closing unit MMK is connected between an inverter INV and an AC motor 6 that is a permanent-magnet synchronous motor. Moreover, a voltage detector 5 is provided between the opening/closing unit MMK and the AC motor 6. When a difference between effective values of phase voltages of the AC motor detected by the voltage detector 5 exceeds a predetermined value, a controller 10 that controls the inverter INV produces and outputs various control signals including a control signal for decelerating the electric vehicle, a control signal for turning power running of the electric vehicle OFF, and a control signal for applying a brake to the electric vehicle.

公开(公告)号：JP2010279125A

公开(公告)日：2010-12-09

申请号：JP2009127749

申请日：2009-05-27

Applicant: Sanden Corp ,  サンデン株式会社

Inventor： HIRONO DAISUKE

IPC: H02P6/12 ,  H02M7/48 ,  H02P6/18

CPC classification number: H02M1/32 ,  H02H7/0805 ,  H02M7/53875 ,  H02P6/12 ,  H02P6/182 ,  H02P29/0241 ,  H02P29/027

Abstract: PROBLEM TO BE SOLVED: To provide a motor control device that avoids several problems resulting from abnormal conditions of an overcurrent detection means by diagnosis of the abnormal conditions. SOLUTION: The motor control device includes an overcurrent inspection unit 19 for sending out a first inspection voltage Vt1 which is lower than a reference voltage Vref for overcurrent determination when a synchronous motor 11 is not rotated and for sending out a second inspection voltage Vt2 which is or equal to or higher than the reference voltage Vref to an overcurrent detection unit 18. The motor control device determines that the abnormal conditions have occurred in the overcurrent detection unit 18 when it is determined that there is an overcurrent in the first inspection voltage Vt1 sent out from the overcurrent inspection unit 19 from the comparison result of the overcurrent detection unit 18, or when it is determined that there is no overcurrent in the second inspection voltage Vt2 sent out from the overcurrent inspection unit 19 from the comparison result of the overcurrent detection unit 18. COPYRIGHT: (C)2011,JPO&INPIT

Abstract translation: 要解决的问题：提供一种电动机控制装置，其通过诊断异常状况来避免由过电流检测装置的异常状况引起的几个问题。 解决方案：电动机控制装置包括过电流检测单元19，用于当同步电动机11不旋转时发出低于用于过电流确定的参考电压Vref的第一检查电压Vt1，并发送第二检查电压 Vt2等于或高于基准电压Vref。当确定在第一次检查中存在过电流时，电动机控制装置确定过电流检测单元18中发生异常状况 从过电流检测单元18的比较结果发出的过电流检测单元19的电压Vt1，或从过电流检查单元19发出的第二检查电压Vt2中没有过电流从比较结果 过电流检测单元18.版权所有（C）2011，JPO＆INPIT

公开(公告)号：JPWO2009001468A1

公开(公告)日：2010-08-26

申请号：JP2008502765

申请日：2007-06-28

Applicant: 三菱電機株式会社

Inventor： 英俊 北中 ,  英俊 北中

IPC: H02P27/06

CPC classification number: H02P27/06 ,  B60L3/003 ,  B60L3/0061 ,  B60L2200/26 ,  H02P29/0241 ,  H02P29/0243 ,  H02P29/027 ,  H02P29/032 ,  Y02T10/642

Abstract: 電気車に搭載した永久磁石同期電動機を駆動する電力変換装置において、電力変換装置や永久磁石同期電動機の損傷の拡大を抑止すること。インバータINVと永久磁石同期電動機である交流電動機6との間に開閉器MMKが接続されるとともに、開閉器MMKと交流電動機6との間に電圧検出器5が設けられる。インバータINVを制御する制御部10は、電圧検出器5により検出される交流電動機の各相電圧のそれぞれの実効値の差が所定値を超えた場合には、電気車を減速させるための制御信号、電気車の力行をオフするための制御信号、または電気車のブレーキを動作させるための制御信号を含む各種制御信号を生成出力する。

公开(公告)号：JP4529666B2

公开(公告)日：2010-08-25

申请号：JP2004354232

申请日：2004-12-07

Applicant: 株式会社デンソー

Inventor： 英男 渡辺

IPC: H02P7/06 ,  H02P7/29 ,  H03B1/00

CPC classification number: H02P29/027 ,  H02P29/032

Abstract: A device for driving a load such as an electric motor for driving a fan mounted on an automobile includes a semiconductor power FET for supplying a load current to the load, a voltage detector for detecting a load voltage, a current detector for detecting a load current and a control circuit for controlling an amount of the load current. The load current is limited to a first limiting level when the detected load current exceeds a predetermined current level, and to a second limiting level, which is lower than the first limiting level, when the load current exceeds the predetermined current level and the load voltage becomes lower than a predetermined voltage level. By limiting the amount of load current, the power FET is surely prevented from being damaged by over-current even if a circuit including the load is short-circuited.

公开(公告)号：JP2009081930A

公开(公告)日：2009-04-16

申请号：JP2007248534

申请日：2007-09-26

Applicant: Jtekt Corp ,  株式会社ジェイテクト

Inventor： NAGASE SHIGEKI ,  UEDA TAKESHI ,  MATSUBARA TAKESHI ,  OYA TOSHIAKI ,  YOSHII YASUYUKI

IPC: H02P21/00 ,  B62D5/04 ,  B62D5/30 ,  B62D6/00 ,  B62D101/00 ,  B62D119/00 ,  B62D137/00 ,  H02P6/16 ,  H02P27/04

CPC classification number: B62D5/0487 ,  H02P6/28 ,  H02P29/027

Abstract: PROBLEM TO BE SOLVED: To provide a motor controller which can detect a fault of all phases of a motor, with only one current sensor, and to provide an electric power steering system equipped with the same. SOLUTION: A current sensor 15 of the motor controller detects the current applied to a motor drive circuit 13 and thus a phase where a failure cannot be detected would occur without taking any measures. However, an abnormal current monitor section 34 contained in a microcomputer 20 receives a voltage signal of an average value of the currents detected in the current sensor 15 by allowing a signal to pass through a first LPF 16 having a cutoff frequency sufficiently lower than the frequency of a PWM signal. Therefore, whether or not the value falls within a predetermined normal range is checked. Accordingly, whether or not some failure containing a failure of the current sensor 15 occurs can be easily determined about every phase. COPYRIGHT: (C)2009,JPO&INPIT

Abstract translation: 要解决的问题：提供一种电动机控制器，其可以仅使用一个电流传感器来检测电动机的所有相的故障，并提供配备有电动助力转向系统的电动助力转向系统。 解决方案：电动机控制器的电流传感器15检测施加到电动机驱动电路13的电流，从而在不采取任何措施的情况下将发生不能检测到故障的阶段。 然而，包含在微型计算机20中的异常电流监视部分34通过允许信号通过具有足够低于频率的截止频率的第一LPF 16来接收电流传感器15中检测到的电流的平均值的电压信号 的PWM信号。 因此，检查该值是否在预定的正常范围内。 因此，可以容易地确定每个相位是否容易确定包含电流传感器15的故障的一些故障。 版权所有（C）2009，JPO＆INPIT

公开(公告)号：JP2009017690A

公开(公告)日：2009-01-22

申请号：JP2007177118

申请日：2007-07-05

Applicant: Sanden Corp ,  サンデン株式会社

Inventor： IDA TOMOSHI ,  KOBAYASHI KOJI ,  KOBAYASHI SATOSHI ,  KADO HIROTAKA

IPC: H02P27/08

CPC classification number: H02P7/2805 ,  F25B2600/021 ,  H02P27/08 ,  H02P29/027 ,  H02P29/032 ,  Y02B30/741

Abstract: PROBLEM TO BE SOLVED: To provide an inverter controller which can be protected easily at low cost, and to provide a heat pump type hot water supply apparatus equipped with the inverter controller. SOLUTION: The inverter controller (1) being supplied with power from an AC power supply (14) and performing variable control of the operating frequency (24) of a motor (22) depending on the load comprises a means for detecting the number of operational revolution (N R ) of the motor, and a controller (20) for controlling the operational frequency based on the comparison of an output duty (D) dependent on the number of operational revolution detected by the number of revolution detection means and a reference duty (D T ) dependent on the target number of revolution (N S ) of the motor. When the number of operational revolution is smaller than the target number of revolution, the controller acquires a regulation duty (D R ) dependent on the target number of revolution and performs overload reduction processing of the motor when the output duty is above the regulation duty. COPYRIGHT: (C)2009,JPO&INPIT

Abstract translation: 要解决的问题：提供一种能够以低成本容易地保护的逆变器控制器，并且提供配备有逆变器控制器的热泵式热水供应装置。 解决方案：逆变器控制器（1）由交流电源（14）供电并根据负载对电动机（22）的工作频率（24）进行可变控制，包括用于检测电动机 电动机的操作转数（N R ），以及用于根据由 旋转检测装置的数量和取决于电动机的目标转数（N S ）的参考占空比（D T ）。 当操作转数小于目标转数时，控制器根据目标转数获取调节占空比（D R ），并在输出时执行电动机的过载降低处理 义务高于监管职责。 版权所有（C）2009，JPO＆INPIT