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81. 发明授权

US4511827A Apparatus for driving a polyphase brushless motor with a suppressed torque ripple 失效
标题翻译：用于驱动具有抑制转矩脉动的多相无刷电动机的装置
公开(公告)号：US4511827A
公开(公告)日：1985-04-16
申请号：US404646
申请日：1982-08-03
申请人： Shigeki Morinaga , Kunio Miyashita , Yasuyuki Sugiura
发明人： Shigeki Morinaga , Kunio Miyashita , Yasuyuki Sugiura
IPC分类号： H02P6/10 , H02P7/28
CPC分类号： H02P6/10
摘要： An apparatus for driving a polyphase brushless motor with a resulting torque ripple effectively suppressed. The apparatus comprises a rotor position sensor, a controller responsive to the output of the sensor for generating a control signal and an inverter serving to conduct electric current to each phase of the motor as a result of commutation under control of the control signal from the controller. The controller is particularly provided with a device for increasing the value of integration of the electric current for each phase of the motor with respect to time as measured from the instant of switching among motor phase currents effected with the control signal.
摘要翻译：用于驱动多相无刷电动机的装置能有效地抑制所产生的转矩脉动。该装置包括转子位置传感器，响应于用于产生控制信号的传感器的输出的控制器，以及用于在来自控制器的控制信号的控制下作为换向的结果将电流传导到电动机的每相的逆变器。该控制器特别地设置有一个装置，用于相对于从控制信号所产生的电动机相电流之间的切换时刻测量的时间，增加电动机各相电流的积分值。

82. 发明授权

US4250424A Rotor of synchronous machines 失效
标题翻译：同步机转子
公开(公告)号：US4250424A
公开(公告)日：1981-02-10
申请号：US946018
申请日：1978-09-26
申请人： Hiroshi Sento , Shoji Tanabe , Tadao Shimozu , Seiji Yamashita , Kunio Miyashita
发明人： Hiroshi Sento , Shoji Tanabe , Tadao Shimozu , Seiji Yamashita , Kunio Miyashita
IPC分类号： H02K1/22 , H02K1/27 , H02K21/46
CPC分类号： H02K1/276 , H02K21/46
摘要： The rotor core of a synchronous motor or a synchronous generator with a permanent magnet is comprised of a multiplicity of laminated thin iron sheets each having as many segments as the poles. Slits are formed between each adjacent segment, and the magnetic reluctance of the slits is made larger than that between the rotor core and the stator core, thereby minimizing the leakage fluxes within the rotor core. Each segment is required to be prevented from being broken away by centrifugal force generated while the machine is in operation. According to the invention, adjacent segments are connected by a non-magnetic material through the slits. The non-magnetic material is fitted in the recesses formed at both sides of the slit in such a manner as to connect them with each other, each of the recesses being positioned substantially parallel to the circumference of the rotor and having a wider bottom than the opening thereof.
摘要翻译：同步电动机的转子铁芯或具有永久磁铁的同步发电机由多个层叠薄铁板构成，每个层叠薄铁板具有与极相同的段。在每个相邻的段之间形成狭缝，并且狭缝的磁阻被制成大于转子芯和定子芯之间的磁阻，从而使转子芯内的漏磁通最小化。需要通过在机器运行时产生的离心力来防止每个部分被破坏。根据本发明，相邻的段通过狭缝通过非磁性材料连接。非磁性材料以彼此连接的方式装配在形成在狭缝的两侧的凹部中，每个凹部被定位成基本上平行于转子的圆周并且具有比底部更宽的底部打开它。

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