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    • 7. 发明申请
    • FIELD-WINDING ROTATING ELECTRICAL MACHINE
    • 现场旋转电机
    • US20150091534A1
    • 2015-04-02
    • US14394637
    • 2012-09-19
    • Kenichi AkitaMasato MoriMitsunori Tabata
    • Kenichi AkitaMasato MoriMitsunori Tabata
    • H02P9/48H02P9/14
    • H02P9/48B60L15/02B60L2240/425B60L2240/429B60L2240/80H02P9/14H02P29/664Y02T10/645
    • A field current limiting section includes a field current limitation instructing section for, when a field current limitation determining section determines that a determination value has reached a predetermined determination threshold value, generating a field current limiting instruction to a field current control section so as to limit field current to be equal to or smaller than a predetermined permissible value during a predetermined field current limitation time Tlim. A field current limitation releasing section outputs a field current limitation releasing instruction to the field current limiting section so as to release limitation of the field current during a predetermined field current limitation release time TC. When having received the field current limitation releasing instruction from the field current limitation releasing section, the field current limiting section releases limitation of the field current during the predetermined field current limitation release time.
    • 场电流限制部分包括励磁电流限制指令部分,用于当励磁电流限制确定部分确定确定值已经达到预定的确定阈值时,向励磁电流控制部分产生励磁电流限制指令以限制 励磁电流在预定的励磁电流限制时间Tlim期间等于或小于预定的允许值。 励磁电流限制解除部分将励磁电流限制解除指令输出到励磁电流限制部分,以便在预定的励磁电流限制释放时间TC期间释放励磁电流的限制。 当从场电流限制解除部分接收到励磁电流限制解除指令时,励磁电流限制部分在预定的励磁电流限制释放时间期间释放励磁电流的限制。
    • 9. 发明授权
    • Power converter control apparatus
    • 电源转换器控制装置
    • US08736234B2
    • 2014-05-27
    • US13270772
    • 2011-10-11
    • Kenji NakajimaMasato MoriKenichi AkitaMitsunori Tabata
    • Kenji NakajimaMasato MoriKenichi AkitaMitsunori Tabata
    • H02P9/00
    • H02P9/107H02P29/032H02P29/60
    • A power converter control apparatus includes a power converter part having a bridge circuit formed of a switching element and a field circuit controlling conduction of a field winding in an AC generator, and a control apparatus part having a field current detector, a temperature detector detecting a temperature of a generator part, the power converter part, or the control apparatus part, a field current instruction computation portion computing a field current instruction value of the generator, a temperature rise suppression portion computing a generated current suppression value on the basis of an output of the temperature detector and computing a field current suppression value on the basis of the computed generated current suppression value, a field current instruction selection portion selecting the field current instruction value or the field current suppression value whichever is the smaller, and a field current control portion controlling a field current.
    • 电力转换器控制装置包括具有由开关元件形成的桥接电路的电力转换器部分和控制交流发电机中的励磁绕组的导通的励磁电路,以及具有励磁电流检测器的控制装置部分, 发电机部分的温度,功率转换器部分或控制装置部分,励磁电流指令计算部分,用于计算发电机的励磁电流指令值,升温抑制部分基于输出来计算产生的电流抑制值 并且基于计算出的发电电流抑制值来计算励磁电流抑制值,场电流指令选择部分选择场电流指令值或场电流抑制值,取较小值,以及励磁电流控制 控制场电流的部分。
    • 10. 发明授权
    • Vertical-current-type reproducing magnetic head and method of manufacturing the same
    • 垂直电流式再现磁头及其制造方法
    • US08270123B2
    • 2012-09-18
    • US12615222
    • 2009-11-09
    • Kenichi AkitaNobuo YoshidaKatsuro Watanabe
    • Kenichi AkitaNobuo YoshidaKatsuro Watanabe
    • G11B5/33
    • G11B5/3909B82Y10/00B82Y25/00G11B5/3912G11B2005/3996
    • In one embodiment, a vertical-current-type reproducing magnetic head includes a sensor film, an upper shield paired with a lower shield that together flow a current into the sensor film in a thickness direction of the sensor film, and magnetic-domain control magnetic films provided above both sides of the sensor film in a track width direction of the sensor film. The shield is formed via a nonmagnetic adhesion layer including a discontinuous region near the sensor film, and the sensor film contacts the upper shield. In another embodiment, a method includes forming a resist layer, etching a sensor film while using the resist layer as a mask, forming first insulating films, domain-control magnetic films, and nonmagnetic adhesion layers in a stacked manner, lifting-off the resist layer, and forming an upper shield that together with a lower shield flow current into the sensor film in a thickness direction of the sensor film.
    • 在一个实施例中,垂直电流型再现磁头包括传感器膜,与屏蔽层成对的上屏蔽层,其一起沿传感器膜的厚度方向将电流流入传感器膜,以及磁畴控制磁 在传感器膜的轨道宽度方向上设置在传感器膜两侧的膜。 屏蔽是通过包括传感器膜附近的不连续区域的非磁性粘合层形成的,并且传感器膜接触上屏蔽。 在另一个实施例中,一种方法包括形成抗蚀剂层,在使用抗蚀剂层作为掩模的同时蚀刻传感器膜,以堆叠的方式形成第一绝缘膜,域控制磁性膜和非磁性粘合层,提升抗蚀剂 并且在传感器膜的厚度方向上形成与屏蔽流动电流一起下降到传感器膜中的上屏蔽。