公开(公告)号：US07948137B2

公开(公告)日：2011-05-24

申请号：US11815804

申请日：2006-01-26

申请人： Kazunobu Ohyama ,  Shin Nakamasu ,  Yoshinari Asano ,  Toshinari Kondo ,  Keiji Aota

发明人： Kazunobu Ohyama ,  Shin Nakamasu ,  Yoshinari Asano ,  Toshinari Kondo ,  Keiji Aota

IPC分类号： H02K21/14 ,  H02K21/12 ,  H02K1/22

CPC分类号： H02K1/276

摘要： A rotor includes a core extending in a predetermined direction, and a plurality of magnets. The core has parts formed by magnetic materials and extending in the predetermined direction. The parts are arranged in a loop around the part, and face the part through gaps. The magnets are buried in the gaps in the form of a loop in the core. The magnets have pole faces extending in the predetermined direction. In each of the magnets, at least one of ends of the magnet protrudes forward in parallel to the predetermined direction with respect to an end of the part that is on the same side with the at least one of the ends of the magnet.

摘要翻译： 转子包括沿预定方向延伸的芯和多个磁体。 芯具有由磁性材料形成并沿预定方向延伸的部分。 零件围绕零件布置成环形，并通过间隙面对零件。 磁体以芯中的环的形式埋在间隙中。 磁体具有沿预定方向延伸的极面。 在每个磁体中，磁体的至少一个端部相对于与磁体的至少一个端部在同一侧的部分的端部平行于预定方向向前突出。

公开(公告)号：US20090127962A1

公开(公告)日：2009-05-21

申请号：US11815804

申请日：2006-01-26

申请人： Kazunobu Ohyama ,  Shin Nakamasu ,  Yoshinari Asano ,  Toshinari Kondo ,  Keiji Aota

发明人： Kazunobu Ohyama ,  Shin Nakamasu ,  Yoshinari Asano ,  Toshinari Kondo ,  Keiji Aota

IPC分类号： H02K21/14

CPC分类号： H02K1/276

摘要： A rotor includes a core extending in a predetermined directions, and a plurality of magnets. The core has parts formed by magnetic materials and extending in the predetermined direction. The parts are arranged in a loop around the part, and face the part through gaps. The magnets are buried in the gaps in the form of a loop in the core. The magnets have pole faces extending in the predetermined direction. In each of the magnets, at least one of ends of the magnet protrudes forward in parallel to the predetermined direction with respect to an end of the part that is on the same side with the at least one of the ends of the magnet.

摘要翻译： 转子包括沿预定方向延伸的芯和多个磁体。 芯具有由磁性材料形成并沿预定方向延伸的部分。 零件围绕零件布置成环形，并通过间隙面对零件。 磁体以芯中的环的形式埋在间隙中。 磁体具有沿预定方向延伸的极面。 在每个磁体中，磁体的至少一个端部相对于与磁体的至少一个端部在同一侧的部分的端部平行于预定方向向前突出。

公开(公告)号：US4989128A

公开(公告)日：1991-01-29

申请号：US340023

申请日：1989-04-18

申请人： Kazunobu Ohyama ,  Hiroyuki Yamai

发明人： Kazunobu Ohyama ,  Hiroyuki Yamai

IPC分类号： H02M7/5387

CPC分类号： H02M7/53873 ,  H02M2007/53876

摘要： In a pulse-width modulation control unit for an inverter, in the case where the carrier frequency is a normal value of about 5 KHz, the control unit calculates the ON time (the PWM control pattern) at every calculation period corresponding to such a carrier frequency and divides the calculation ON time into plural pulses. This enables the control unit to present apparently such conditions that the PWM control was carried out at a higher carrier frequency (20 KHz or higher), while using a one-chip microcomputer which requires a comparatively long calculation time. Thus, the PWM control by a higher carrier frequency can be attained at a lower cost and by a simple circuit construction.