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11. 发明专利

JP2004242419A Overload detection device for motor 审中-公开
公开(公告)号：JP2004242419A
公开(公告)日：2004-08-26
申请号：JP2003028525
申请日：2003-02-05
申请人： Sumitomo Heavy Ind Ltd , 住友重機械工業株式会社
发明人： ONISHI YUJI
IPC分类号： B29C45/76 , H02P23/00 , H02P7/36
CPC分类号： Y02P70/26
摘要： PROBLEM TO BE SOLVED: To provide an overload detection device that can detect the overload state of a motor with high accuracy. SOLUTION: A current detector is attached to one of power lines U, V and W of the motor, and a current flowing thereto is detected. A effective value of the current flowing to the power line is obtained from the detected current value and compared with a threshold. When the obtained effective value exceeds the threshold, it is determined that the motor is in the overload state. COPYRIGHT: (C)2004,JPO&NCIPI

12. 发明专利

JP2004222469A Harmonic energy recovering device 有权
公开(公告)号：JP2004222469A
公开(公告)日：2004-08-05
申请号：JP2003009687
申请日：2003-01-17
申请人： Honda Motor Co Ltd , 本田技研工業株式会社
发明人： FUJISAWA HIDEKI , TAKAGI KAZUHIRO , TAKAHASHI HIROYUKI
IPC分类号： H02J3/01 , H02P5/74 , H02P23/00 , H02P7/36 , H02P7/74
摘要： PROBLEM TO BE SOLVED: To provide a low-cost harmonic energy recovering device which prevents harmful effects of harmonic components contained in alternating currents on electrical machinery and apparatus and realizes effective use of harmonic components. SOLUTION: Each of stator coils 13 of a three-phase induction motor IM is connected to a three-phase power line 4 through which alternating current containing harmonic components of odd-numbered order flows, is connected with each other through separate phase advance capacitors 14 which constitute circuits that resonate with the harmonic components of odd-numbered order, in cooperation with the stator coils 13. A current is fed through the stator coils 13 in sequence based on the phase difference of alternating currents from power lines 4. COPYRIGHT: (C)2004,JPO&NCIPI

13. 发明专利

JP2004072913A Controller for single-phase induction motor 有权
标题翻译：单相感应电机控制器
公开(公告)号：JP2004072913A
公开(公告)日：2004-03-04
申请号：JP2002229810
申请日：2002-08-07
申请人： Sharp Corp , シャープ株式会社
发明人： SUZUKI TSUNEO , ANDO YUKIHITO
IPC分类号： H02P1/44 , H02P23/00 , H02P25/04 , H02P7/36
摘要： PROBLEM TO BE SOLVED: To provide a controller for single-phase induction motor which, if a switch means for controlling excitation is fused, prevents a current limiting resistor from heating and creating danger. SOLUTION: A current transformer 6 detects a current passed through a single-phase induction motor 15. Based on the output signal of the current transformer 6, a control circuit 8 judges whether a relay switch RL1a has been fused. If the control circuit 8 judges that the relay switch RL1a has been fused, the control circuit turns on a relay switch RY3a to bring a control circuit 13 into conduction. If the relay switch RL1a has been fused, the control circuit 13 turns on a relay switch RL4a. This prevents a current limiting resistor Rs from heating and creating danger. COPYRIGHT: (C)2004,JPO
摘要翻译：要解决的问题：为了提供用于单相感应电动机的控制器，如果用于控制激励的开关装置熔断，则防止限流电阻加热并产生危险。电流互感器6检测通过单相感应电动机15的电流。根据电流互感器6的输出信号，控制电路8判断继电器开关RL1a是否已熔断。如果控制电路8判定继电器开关RL1a已熔断，则控制电路接通继电器开关RY3a，使控制电路13导通。如果继电器开关RL1a已熔断，则控制电路13接通继电器开关RL4a。这样可以防止限流电阻Rs加热并产生危险。版权所有（C）2004，JPO

14. 发明专利

JP2003286966A Motor control device for compressor 审中-公开
标题翻译：压缩机电机控制装置
公开(公告)号：JP2003286966A
公开(公告)日：2003-10-10
申请号：JP2002089059
申请日：2002-03-27
申请人： Mitsubishi Heavy Ind Ltd , 三菱重工業株式会社
发明人： SUZUKI KAZUHIRO , KUWAYAMA HIRONOBU , AMANO TAKUJI , MAENO MASASHI , KADOFUJI KIYOTAKA
IPC分类号： F04B49/10 , F04B49/06 , H02P23/00 , H02P27/06 , H02P7/36 , H02P7/63
摘要： PROBLEM TO BE SOLVED: To provide a motor control device for a compressor capable of conducting low vibration control only in a low-rotation and small-output range where low-vibration control is necessary by grasping load information. SOLUTION: This device is provided with a low-vibration control means to control to maintain target rotation speed by controlling a motor applied voltage by an inverter in accordance with load torque fluctuation in each stroke of a compressor, a load information detecting means to detect load information of the compressor, and a switch to put ON/OFF the low vibration control means in accordance with the load information detected. When the information indicates low load, the switch is turned ON to actuate the low-vibration control means. When the load information indicates heavy load, the switch is turned OFF to prevent the low-vibration control means from actuating. Detection of the load information is conducted based on either of outside temperature, external heat exchange temperature, compressor coolant temperature, or inverter current. COPYRIGHT: (C)2004,JPO
摘要翻译：要解决的问题：提供一种用于仅通过抓取负载信息需要低振动控制的低旋转和小输出范围的能够进行低振动控制的压缩机的电动机控制装置。解决方案：该装置设有低振动控制装置，通过根据压缩机的每个冲程的负载转矩波动控制逆变器的电动机施加电压来控制以保持目标转速，负载信息检测装置以检测压缩机的负载信息，以及根据检测到的负载信息的低振动控制装置的ON / OFF的开关。当信息指示低负载时，开关被接通以致动低振动控制装置。当负载信息表示重负载时，开关被关闭，以防止低振动控制装置致动。负载信息的检测是根据外部温度，外部热交换温度，压缩机冷却液温度或逆变器电流进行的。版权所有（C）2004，JPO

15. 发明专利

JP2003189684A HERMETICALLY SEALED ELECTRIC COMPRESSOR AND PROTECTING APPARATUS OF REFRIGERATING APPARATUS 审中-公开
公开(公告)号：JP2003189684A
公开(公告)日：2003-07-04
申请号：JP2001381128
申请日：2001-12-14
申请人： HITACHI LTD
发明人： SHIMADA TOSHIO , SUGAWARA WATARU
IPC分类号： F04B39/00 , F04B49/10 , H01H37/54 , H02P23/00 , H02P23/07 , H02P7/36
摘要： PROBLEM TO BE SOLVED: To prevent the life of an overload-protecting apparatus from being lost by limiting the single-phase constraint energization of a three-phase induction motor to one time even if phase interruption occurs in any phases in the protecting apparatus of a hermetically sealed electric compressor. SOLUTION: One side of an operating coil 1L is connected to a neutral-point terminal 2N of one overload-protecting apparatus 2R, and at the same time the other of the operating coil 1L is connected between other overload-protecting apparatus 2T and a contact 1T of an electromagnetic contact apparatus 1 via a contact 5A of a reversal-preventing apparatus 5. Additionally, a resistor 5R of the reversal-preventing apparatus 5 is connected between the overload- protecting apparatus 12R and a contact 1S the electromagnetic contact apparatus 1, and at the same time a relay coil 5L of the reversal-preventing apparatus 5 is connected to the neutral-point terminal 2N of the other overload-protecting apparatus 2T. COPYRIGHT: (C)2003,JPO

16. 发明专利

JP2003158892A METHOD FOR CONTROLLING ROTATIONAL SPEED OF ELECTRIC MOTOR 审中-公开
公开(公告)号：JP2003158892A
公开(公告)日：2003-05-30
申请号：JP2002256323
申请日：2002-09-02
申请人： HILTI AG
发明人： OSSELMANN CLAUS , PETER HELLMANN , TROEDER LUTZ
IPC分类号： B25F5/00 , H02P25/10 , H02P25/14 , H02P29/60 , H02P7/36
摘要： PROBLEM TO BE SOLVED: To provide a method for controlling the rotational speed of an electric motor which keeps the rotational speed low, until its torque reaches a limit. SOLUTION: A circuit (2) for controlling the rotational speed is connected to a power source, and controls the rotational speed of the electric motor (1) from a high rotational speed (N1) to a comparatively lower rotational speed (N2, N3 and N4). In a first step, depending on a preselected rotational speed (N1, N2), the rotational speed control is limited to a lower effective motor voltage (Ueff) by the circuit (2). In a second step, depending on the torque (M) needed for the control to the preselected speed (N1, N2), the motor voltage (Ueff) is controlled within the limited range.

17. 发明专利

JP3408447B2 失效
公开(公告)号：JP3408447B2
公开(公告)日：2003-05-19
申请号：JP6499199
申请日：1999-03-11
IPC分类号： G01R19/25 , H02P20060101 , H02P7/00 , H02P23/00 , H03F3/387 , H03K7/08 , H03M1/60 , H02M7/48 , H02P7/36

18. 发明专利

JP3401155B2 失效
公开(公告)号：JP3401155B2
公开(公告)日：2003-04-28
申请号：JP3052597
申请日：1997-02-14
IPC分类号： H02P21/00 , B60L11/18 , B60L15/02 , H02P21/22 , H02P21/34 , H02P23/00 , H02P27/02 , H02P27/04 , H02P5/402 , H02P7/36 , H02P7/622

19. 发明专利

JP3385716B2 Control circuit of synchronous motor 失效
公开(公告)号：JP3385716B2
公开(公告)日：2003-03-10
申请号：JP8481994
申请日：1994-04-22
申请人：日立工機株式会社
发明人：司小川 , 健浩本多 , 秀穂横川 , 敏相田
IPC分类号： H02H7/085 , H02H7/08 , H02P23/00 , H02P7/36

20. 发明专利

JP2003037999A Inverter system 有权
标题翻译：逆变器系统
公开(公告)号：JP2003037999A
公开(公告)日：2003-02-07
申请号：JP2001223066
申请日：2001-07-24
申请人： Hitachi Ltd , 株式会社日立製作所
发明人： SAKAI KEIJIRO , OKUYAMA TOSHIAKI , NAKATSU KINYA , TOMITA HIROYUKI , KATO JUNJI , FURUKAWA TEIICHI
IPC分类号： H02P23/00 , H02P1/16 , H02P21/00 , H02P27/04 , H02P7/36
CPC分类号： H02P1/16 , H02P21/34
摘要： PROBLEM TO BE SOLVED: To prevent over excitation if torque boost voltage is largely set to acquire high starting torque in a multipurpose inverter and the like. SOLUTION: An induced voltage indication Em* is acquired from an inverter's primary frequency indication ω1*, then a torque boost voltage indication ΔVz* corresponding to the ω1* from a torque boost voltage indicator 8 and standard phase indication θd* from an integrator 9 are output. Exciting current Id (equivalent to no-load current) of a motor is detected by a uvw/dq exchanger 11. Deviation of exciting current limitation level indication Idmax* and exciting current detection value Id is input in a limiter process part 13, and torque boost voltage compensation amount ΔVc to change the ΔVz* is output so that the Id reaches at the Idmax* or less. The inverted ΔVz* is regarded as the lowest limiter value of the limiter process part. A last torque boost voltage indication after compensation ΔVt* is determined by adding these ΔVc and ΔVz*, and a q axis voltage indication Vq* of inverter output voltage is determined by adding these ΔVt* and Em*.
摘要翻译：要解决的问题：为了在多功能逆变器等中获得高起动转矩时大力设定转矩提升电压，防止过励磁。解决方案：从变频器的主要频率指示ω1*获取感应电压指示Em *，然后从转矩提升电压指示器8对应于ω1*的转矩提升电压指示ΔVz*和来自积分器9的标准相位指示θd* 输出。电动机的励磁电流Id（相当于空载电流）由uvw / dq交换机11检测。励磁电流限制电平指示Idmax *和励磁电流检测值Id的偏差被输入限幅器处理部13，并且转矩输出升压电压补偿量ΔVc以改变ΔVz*，使得Id达到Idmax *或更小。反转ΔVz*被认为是限幅器处理部分的最低限幅值。通过加上这些ΔVc和ΔVz*来确定补偿后的最后一个转矩提升电压指示ΔVt*，并通过将这些ΔVt*和Em *相加来确定逆变器输出电压的q轴电压指示Vq *。

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