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    • 54. 发明申请
    • PWM INVERTER CONTROL APPARATUS AND CONTROL METHOD
    • PWM逆变器控制装置和控制方法
    • US20060056211A1
    • 2006-03-16
    • US10517534
    • 2003-06-04
    • Yoshiyuki TanakaKatsutoshi YamanakaEiji Watanabe
    • Yoshiyuki TanakaKatsutoshi YamanakaEiji Watanabe
    • H02M7/5387
    • H02M7/483H02M1/32H02M1/36H02M7/487
    • It is an object of the invention to provide a multilevel PWM inverter control apparatus capable of safely carrying out switching from a normal operation to a protecting operation and performing a reset from the protecting operation to the normal run safely and smoothly without requiring a complicated control algorithm. In the invention, if a current value I which is measured is set to have a level which is equal to or higher than the level of a first reference value I1 and is lower than the level of a second reference value I2, a zero vector to be started from an OOO state in which an intermediate potential is output for all of phases is output (Step 22). If the current value I is set to have a level which is equal to or higher than the level of the second reference value I2 and is lower than the level of a third reference value I3, a base block operation for bringing all of switching units into an OFF state is carried out after outputting the zero vector (Step 28). If the current value I is equal to or greater than the third reference value I3, an emergency stop is carried out (Step 29). When a reset to a normal operation is carried out after the execution of the base block operation, the reset to the normal operation is performed after the execution of the operation for outputting the zero vector.
    • 本发明的目的是提供一种能够安全地执行从正常操作到保护操作的切换的多电平PWM逆变器控制装置,并且安全平稳地执行从保护操作到正常运行的复位,而不需要复杂的控制算法 。
    • 58. 发明授权
    • Perforated sleeve connector
    • 穿孔套筒连接器
    • US06712522B2
    • 2004-03-30
    • US10067329
    • 2002-02-07
    • Eiji WatanabeKenji Nakamura
    • Eiji WatanabeKenji Nakamura
    • G02B636
    • G02B6/3874C25D1/02G02B6/3877
    • A cylindrical sleeve connector for mounting ferrules retaining optical fibers therein is formed with a plurality of perforations arranged in a given pattern so as to be elastically deformable within in a specified elastic region. The sleeve connector is produced, using electroforming process, on a cylindrical electroforming mandrel comprising a conductive rod with external surface texture that is equivalent to required internal surface texture of the sleeve connector and a non-conductive layer formed on the conductive rod so as to provide non-conductive segments identical in configuration with the perforations and arranged in conformity with the given pattern of perforations of the cylindrical sleeve connector.
    • 用于将保持光纤的套圈安装在其中的圆柱形套筒连接器形成有以给定图案布置的多个穿孔,以便在特定的弹性区域内可弹性变形。 套筒连接器使用电铸工艺制造在圆柱形电铸心轴上,该圆柱形电铸心轴包括具有等同于套筒连接器的所需内表面纹理的外部表面纹理的导电杆和形成在导电杆上的非导电层,以便提供 非导电部件的结构与穿孔相同,并且与圆柱形套筒连接器的给定型式的穿孔一致。