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11. 发明专利

JP2010183698A Motor controller and compressor 审中-公开
标题翻译：电机控制器和压缩机
公开(公告)号：JP2010183698A
公开(公告)日：2010-08-19
申请号：JP2009023792
申请日：2009-02-04
申请人： Hitachi Industrial Equipment Systems Co Ltd , 株式会社日立産機システム
发明人： OKUBO TOMOFUMI , SUZUKI NOBUNAGA , UEMATSU HAJIME
IPC分类号： H02P27/06 , F04B39/00 , H02P21/00 , H02P27/04
摘要： PROBLEM TO BE SOLVED: To provide a motor controller which prevents damage of the motor controller and a motor by detecting a connection error and its type before the operation of the controller at the beginning of start-up when a connection error occurs in an output signal line of a current detector, and to provide a compressor. SOLUTION: The motor controller is provided with: a power converter 10 changing power into three-phase AC of a variable frequency to be supplied to a three-phase motor; a current detector 30 detecting the conduction currents of a plurality of phases of the motor; and a control part 15 supplying a control signal to the power converter 10 based on an external command signal and a detecting signal of the current detector and emitting a DC command to supply a DC command current for positioning the motor 2 from the power converter at the beginning of the start-up. The control part is also provided with a determination unit determining whether connection of the current detector is correct or not based on a pattern of the detecting signal of the current detector when DC for positioning is supplied. The determination unit generates an interruption signal interrupting the power to be supplied to the power converter when an error is detected. COPYRIGHT: (C)2010,JPO&INPIT
摘要翻译：要解决的问题：提供一种电动机控制器，其在发生连接错误时在起动时开始时控制器的操作之前检测到连接错误及其类型来防止电动机控制器和电动机的损坏电流检测器的输出信号线，并提供压缩机。电动机控制器具有：向三相电动机供给可变频率的三相交流的电力变换器10; 电流检测器30检测电动机的多相的传导电流; 以及控制部分15，其基于外部命令信号和电流检测器的检测信号向电力转换器10提供控制信号，并且发出DC指令以提供用于在电力转换器处定位电动机2的DC指令电流启动初期。当提供用于定位的DC时，控制部还设置有确定单元，其基于当前检测器的检测信号的模式来确定当前检测器的连接是否正确。当检测到错误时，确定单元产生中断要提供给功率转换器的电力的中断信号。版权所有（C）2010，JPO＆INPIT

12. 发明专利

JP2009007971A Compressor and its control method 有权
标题翻译：压缩机及其控制方法
公开(公告)号：JP2009007971A
公开(公告)日：2009-01-15
申请号：JP2007168473
申请日：2007-06-27
申请人： Hitachi Industrial Equipment Systems Co Ltd , 株式会社日立産機システム
发明人： OKUBO TOMOFUMI , SUZUKI NOBUNAGA , TAGUCHI YOSHIYUKI , UEMATSU HAJIME , HASE MASAKAZU
IPC分类号： F04B49/06 , F04C28/06
摘要： PROBLEM TO BE SOLVED: To provide a compressor for compressing gas, solving the problems that liquid existing in the compressor body and its peripheral passage, such as lubricating oil being highly viscous when used in low temperature environment or refrigerant partially liquefied when used after left unused for a long period, causes it to be difficult to stably start with a torque increase at starting and occasionally stops it with a compressor protecting function, and in this case, there are the need for maintenance work for restarting the compressor, leading to the degradation of reliability, and the need for stabilizing start control to improve the influences of the load torque increase resulting from the liquid.
SOLUTION: For the stabilizing start control of the compressor, positioning operation is performed when the viscosity of liquid is low right after stopping a rotor. Otherwise, the compressor is rotated with a predetermined rotation amount right after started, and then stopped once. Followingly, it is driven at a command rotating speed given as a control command value.
COPYRIGHT: (C)2009,JPO&INPIT
摘要翻译：要解决的问题：提供一种用于压缩气体的压缩机，解决了当在低温环境中使用的润滑油高度粘性的压缩机本体及其周边通道中存在的液体或当使用时部分液化制冷剂的问题长时间不使用后，由于启动时的转矩增加难以稳定地起动，并且在压缩机保护功能下偶尔停止，在这种情况下，需要维护工作来重新启动压缩机，导致降低可靠性，以及需要稳定启动控制，以改善由液体引起的负载转矩增加的影响。解决方案：对于压缩机的稳定启动控制，当停止转子后液体的粘度低时，执行定位操作。否则，压缩机在启动之后立即以预定旋转量旋转，然后停止一次。接下来，以作为控制命令值给出的命令旋转速度驱动。版权所有（C）2009，JPO＆INPIT

13. 发明专利

JP2007185030A Controller for motors 有权
标题翻译：电机控制器
公开(公告)号：JP2007185030A
公开(公告)日：2007-07-19
申请号：JP2006000891
申请日：2006-01-05
申请人： Hitachi Industrial Equipment Systems Co Ltd , 株式会社日立産機システム
发明人： OKUBO TOMOFUMI , TAGUCHI YOSHIYUKI
IPC分类号： H02P27/06
摘要： PROBLEM TO BE SOLVED: To provide a controller that makes it possible to shorten a starting time when the controller must be restarted in a short time after it is stopped and thus contributes to the enhancement of the performance of applications to which the controller is applied. SOLUTION: When a motor is being driven, processing is carried out to acquire the frequency and phase of the rotation of the motor. Thus, even when stopping operation is performed, the processing to acquire the frequency and phase of the rotation of the motor is being still carried out. When a motor is being driven, a driving signal or the like for producing supply output to the motor may be superimposed on the supply output. Therefore, these superimposed signals are removed, or the influence of the superimposed signals is reduced. COPYRIGHT: (C)2007,JPO&INPIT
摘要翻译：要解决的问题：提供一种控制器，其可以在控制器停止之后的短时间内重新启动控制器时缩短启动时间，从而有助于提高控制器的应用的性能被申请;被应用。
解决方案：当电机正在驱动时，进行处理以获取电机旋转的频率和相位。因此，即使执行停止操作，仍然执行获取电动机的旋转频率和相位的处理。当电动机被驱动时，用于向电动机产生供给输出的驱动信号等可以叠加在供给输出端上。因此，这些叠加信号被去除，或叠加信号的影响减小。版权所有（C）2007，JPO＆INPIT

14. 发明专利

JP2006158101A Drive unit of synchronous motor 有权
标题翻译：同步电机驱动单元
公开(公告)号：JP2006158101A
公开(公告)日：2006-06-15
申请号：JP2004345556
申请日：2004-11-30
申请人： Hitachi Industrial Equipment Systems Co Ltd , 株式会社日立産機システム
发明人： KANEKO DAIGO , IWAJI YOSHITAKA , SAKAMOTO KIYOSHI , ENDO TSUNEHIRO , OKUBO TOMOFUMI
IPC分类号： H02P6/16
CPC分类号： H02P6/18 , H02P21/18 , H02P2203/01 , H02P2207/05
摘要： PROBLEM TO BE SOLVED: To provide a sensor-less control device that can be applied to a permanent magnet synchronous motor in general irrespective of the presence or the absence of the salient polarity of a rotor and a concentrated winding and a distributed winding of a stator structure, and can detect a position of a magnetic pole by simple algorithm. SOLUTION: This drive unit of the synchronous motor provided with a power converter 2 that applies an AC of a variable voltage and a variable frequency to the synchronous motor 3 comprises a pulsating current applying means 10 that imparts a pulsating current to the synchronous motor, and a magnetic polarity estimation means 12. The magnetic pole position estimation means 12 detects two current values ΔIdcp1, ΔIdcp2, and two current values ΔIdcn1, ΔIdcn2 at the positive side and the negative side of the pulsating current, and estimates the position of the magnetic pole of the synchronous motor 3 on the basis of the difference of change rates of ΔIdcp1 to ΔIdcp2, and ΔIdcn1 to ΔIdcn2. COPYRIGHT: (C)2006,JPO&NCIPI
摘要翻译：
要解决的问题：提供一种能够在存在的一般无关或不存在转子的凸极性的和集中绕组和分布绕组被应用到的永久磁铁同步电动机的无传感器控制装置的定子结构，并且可以通过简单的算法检测磁极的位置。解决方案：具有向同步电动机3施加可变电压和可变频率的AC的电力转换器2的同步电动机的该驱动单元包括脉动电流施加装置10，其将脉动电流施加到同步电动机马达，和一个磁极性估计装置12的磁极位置估计装置12检测在所述正侧和脉动电流的负侧两个电流值ΔIdcp1，ΔIdcp2，和两个电流值ΔIdcn1，ΔIdcn2，并且估计的位置基于ΔIdcp1至ΔIdcp2的变化率差和ΔIdcn1至ΔIdcn2的同步电动机3的磁极。版权所有（C）2006，JPO＆NCIPI

15. 发明专利

JP2004289959A Method and apparatus for controlling permanent-magnet synchronous motor 有权
公开(公告)号：JP2004289959A
公开(公告)日：2004-10-14
申请号：JP2003080439
申请日：2003-03-24
申请人： Hitachi Industrial Equipment Systems Co Ltd , Hitachi Ltd , 株式会社日立産機システム , 株式会社日立製作所
发明人： TOBARI KAZUAKI , ENDO TSUNEHIRO , SHIRAHAMA HIDEFUMI , TAGUCHI YOSHIYUKI , OKUBO TOMOFUMI
IPC分类号： H02P29/00 , H02P6/08 , H02P6/18 , H02P21/00 , H02P21/06 , H02P21/14 , H02P27/04 , H02P27/06 , H02P7/63 , H02P5/00
CPC分类号： H02P21/06 , H02P6/18 , H02P2207/05
摘要： PROBLEM TO BE SOLVED: To suppress shaft displacement in a synchronous motor 1 due to the insufficiency of the control response angular frequency of a frequency computation unit 15, and thereby accomplish accurate torque control even during accelerating/decelerating operation. SOLUTION: Shaft misalignment in the synchronous motor 1 due to the insufficiency of the control response angular frequency of the frequency computation unit 15 is estimated with this control response angular frequency taken into account. The estimated value Δθc2 is added to a computed value Δθc1 of the shaft misalignment, and the resulting value is taken as the input Δθc3 of the frequency computation unit 15 (Δθc3 = Δθc1 + Δθc2). Thus, even if the control response angular frequency of the frequency computation unit 15 is insufficient, the shaft displacement that would be produced due to this insufficiency is estimated as a second shaft displacement signal Δθc2 and additionally inputted. Therefore, the shaft misalignment Δθc1 in the actual synchronous motor is stabilized at a value substantially equal to zero. COPYRIGHT: (C)2005,JPO&NCIPI

16. 发明专利

JP2004282969A Control apparatus and method for ac motor 审中-公开
公开(公告)号：JP2004282969A
公开(公告)日：2004-10-07
申请号：JP2003074750
申请日：2003-03-19
申请人： Hitachi Home & Life Solutions Inc , Hitachi Industrial Equipment Systems Co Ltd , Hitachi Ltd , 日立ホーム・アンド・ライフ・ソリューション株式会社 , 株式会社日立産機システム , 株式会社日立製作所
发明人： IWAJI YOSHITAKA , ENDO TSUNEHIRO , SAKAMOTO KIYOSHI , OKUBO TOMOFUMI
IPC分类号： H02P6/18 , H02P21/00 , H02P27/04
CPC分类号： H02P21/00 , H02P21/24
摘要： PROBLEM TO BE SOLVED: To provide a control apparatus for an AC motor capable of realizing highly accurate variable speed driving even at a high carrier frequency, in a drive without use of a means of directly detecting the rotor position and rotational speed of the AC motor as well as its phase current. SOLUTION: In detecting an electric current from a DC power supply of an inverter for driving the motor, a value near the middle time of each conduction interval is sampled for a current which intermittently passes in a pulse shape. On the basis of the sampled value, applied voltage or frequency to the motor is controlled. COPYRIGHT: (C)2005,JPO&NCIPI

17. 发明专利

JP2004194417A Generator and power generation method 有权
公开(公告)号：JP2004194417A
公开(公告)日：2004-07-08
申请号：JP2002358836
申请日：2002-12-11
申请人： Hitachi Industrial Equipment Systems Co Ltd , 株式会社日立産機システム
发明人： OKUBO TOMOFUMI , SANO MASAHIRO , TAGUCHI YOSHIYUKI
IPC分类号： H02P9/00
摘要： PROBLEM TO BE SOLVED: To perform power generation by reducing influence due to variations of the amount of energy made to generate or variations of load. SOLUTION: In a power generation equipment which is provided with a generator for generating electric power by driving force which contributes to power generation, a power converter and a capacitor, a number of revolution command value of the generator is reduced when a voltage value of the capacitor is lower than a set value, and energy of excess of the number of revolution is given to the capacitor. When a voltage value of the capacitor is higher than the set value, the number of revolution command value of the generator is increased, and energy is received from the capacitor. As a result, a changed part of the number of revolution is absorbed, and the voltage of the capacitor is made constant. COPYRIGHT: (C)2004,JPO&NCIPI

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