公开(公告)号：US20070063667A1

公开(公告)日：2007-03-22

申请号：US11523562

申请日：2006-09-20

申请人： Kenji Nojima

发明人： Kenji Nojima

IPC分类号： H02P27/04

CPC分类号： H02P21/04 ,  H02P21/02 ,  H02P21/24

摘要： An object is to provide a driving device capable of detecting a current of a motor without any trouble even in a low rotation speed/low load state to continue a sensor-less vector control, in a case where the motor is driven by the sensor-less vector control, and the driving device comprises: a main inverter circuit for applying a pseudo alternating voltage to a permanent magnet type motor M to drive the motor; a current sensor 6 which detects the current flowing through the motor; and a control circuit which controls the main inverter circuit. Based on an output of the current sensor, the control circuit separates the current flowing through the motor into a torque current component and a field current component to control commutation of the main inverter circuit by the sensor-less vector control. In a case where the motor is operated in a predetermined low rotation speed region and/or the motor is in a predetermined low load state, the field current component is passed in such a direction as to weaken a magnetic flux of a permanent magnet.

摘要翻译： 本发明的目的是提供一种驱动装置，即使在低转速/低负载状态下也能够无马达地检测电动机的电流，从而在电动机被传感器驱动的情况下继续进行无传感器矢量控制， 驱动装置包括：主逆变器电路，用于向永久磁铁型电动机M施加伪交流电压以驱动电动机; 电流传感器6，其检测流过马达的电流; 以及控制主逆变电路的控制电路。 基于电流传感器的输出，控制电路将通过电动机的电流分离成转矩电流分量和励磁电流分量，以通过无传感器矢量控制来控制主逆变器电路的换向。 在电动机在预定的低转速区域中操作和/或电动机处于预定的低负载状态的情况下，励磁电流分量沿着弱化永磁体的磁通量的方向通过。

公开(公告)号：US08223521B2

公开(公告)日：2012-07-17

申请号：US12866800

申请日：2009-03-10

申请人： Hidetoshi Inoue ,  Kenji Nojima

发明人： Hidetoshi Inoue ,  Kenji Nojima

IPC分类号： H02M7/521

CPC分类号： H02M7/53871 ,  H02M2007/53876

摘要： In a 2-shunt system, accurate sensorless vector control can be realized without increasing shunt resistors. There is disclosed an inverter device including an inverter main circuit obtained by connecting, in a three-phase bridge-like manner, three arms formed by coupling, in series with a direct-current power source, two switching elements which perform mutually opposite on/off operations, to apply three-phase pseudo alternating-current voltages of a three-phase PWM system to an electric motor; shunt resistors connected to the direct-current power source in series with at least two of the three arms of the inverter main circuit; and a controller for detecting currents flowing through the shunt resistors in a predetermined cycle to control the on/off operations of the switching elements of the inverter main circuit based on the detected currents. The controller converts, into the current value of a specific angle range, a current value detected at a time before approximately 180° corresponding to the specific angle range where the on-time of the switching elements is continuously not more than a predetermined value, and then uses the converted current value.

摘要翻译： 在2分流系统中，无需增加分流电阻即可实现精确的无传感器矢量控制。 公开了一种逆变器装置，其包括逆变器主电路，该逆变器主电路以三相桥式方式连接三个臂，其通过与直流电源串联耦合而形成的两个开关元件， 将三相PWM系统的三相模拟交流电压施加到电动机上; 连接到与逆变器主电路的三个臂中的至少两个串联的直流电源的分流电阻器; 以及控制器，用于以预定周期检测流过分流电阻器的电流，以基于检测到的电流来控制逆变器主电路的开关元件的接通/断开操作。 控制器将特定角度范围的当前值转换为对应于开关元件的接通时间不超过预定值的特定角度范围的大约180°之前的时间检测的电流值，以及 然后使用转换的当前值。

公开(公告)号：US5519188A

公开(公告)日：1996-05-21

申请号：US277885

申请日：1994-07-20

申请人： Tamaoki Yuichi ,  Sadami Hagiguchi ,  Kenji Nojima ,  Tetsuya Miyoshi

发明人： Tamaoki Yuichi ,  Sadami Hagiguchi ,  Kenji Nojima ,  Tetsuya Miyoshi

IPC分类号： A01K41/00 ,  A01K41/02 ,  B01L7/04 ,  C12M1/38 ,  G05D23/19 ,  F27D11/00 ,  A01K41/04

CPC分类号： A01K41/02 ,  A01K41/00 ,  C12M41/14 ,  C12M41/48

摘要： An object of the present invention is to provide an incubator with improved control performance for the temperature and humidity in an inner box. The present invention is an incubator comprising an outer box having an inner portion made from a heat insulating material, an inner box disposed in the outer box through a space defined between the inner portion of the outer box and the inner box, a heating unit disposed in the space and adapted for heating the inside of the inner box, the heating unit being constructed of a plurality of heating means disposed at least on a bottom wall and left and right side walls of the inner box, and a control unit for independently controlling each of the heating means.

摘要翻译： 本发明的目的是提供一种具有改善内箱温度和湿度控制性能的培养箱。 本发明是一种培养箱，其特征在于，具有由绝热材料构成的内部部分的外箱体，通过所述外箱内部与所述内箱之间形成的空间配置在所述外箱内的内箱， 在该空间内适于加热内箱的内部，加热单元由至少设置在内箱的底壁和左右侧壁上的多个加热装置构成，以及用于独立控制的控制单元 每个加热装置。