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1.发明授权
公开(公告)号：US6025691A
公开(公告)日：2000-02-15
申请号：US37632
申请日：1998-03-10
申请人： Yasutomo Kawabata , Yoshiaki Taga, deceased , by Shigeo Taga, heir , by Takiko Taga, heir , by Tomoyo Taga, heiress , Masatoshi Uchida , Akihiko Kanamori , Yukio Inaguma , Toshinobu Arakawa
发明人： Yasutomo Kawabata , Yoshiaki Taga, deceased , by Shigeo Taga, heir , by Takiko Taga, heir , by Tomoyo Taga, heiress , Masatoshi Uchida , Akihiko Kanamori , Yukio Inaguma , Toshinobu Arakawa
CPC分类号： H02P6/10 , B60L11/1803 , B60L15/025 , H02P25/03 , B60L2220/14 , B60L2270/145 , H02P2209/07 , Y02T10/643 , Y02T10/7005
摘要： A synchronous motor control system which can freely regulate n-phase electric currents in a synchronous motor to control the characteristics of the synchronous motor. The synchronous motor control system can enhance the output torque per unit weight of a synchronous motor (40) simultaneously with reducing torque ripples. The waveform of three phase alternating currents is freely corrected over a range of +30 degrees from a specified electrical angle, at which a target phase current drawing a sine-wave curve reaches its peak value. It is assumed that this range of .+-.30 degrees corresponds to a range of 0 degree to 60 degrees. By way of example, the waveform is controlled to the peak value of the phase current in a range of 0 degree to 28 degrees. The correction of the phase current is carried out for the target phase which produces the primary magnetic flux of a revolving magnetic field. This improves a fall in torque due to the phase shift and reduces torque ripples while keeping the mean torque at a high level. The system of the invention can arbitrarily regulate the torque waveform of the synchronous motor (40), thereby freely controlling the torque characteristics of the synchronous motor (40).
摘要翻译： 一种同步电机控制系统，可以自由调节同步电机中的n相电流，以控制同步电机的特性。 同步电动机控制系统可以同时减小转矩波动同时提高同步电动机（40）每单位重量的输出转矩。 三相交流电流的波形在从指定的电角度+ 30度的范围内自由校正，在该范围内，绘制正弦波曲线的目标相电流达到其峰值。 假设该+/- 30度的范围对应于0度至60度的范围。 作为示例，将波形控制在0度至28度的范围内的相电流的峰值。 对产生旋转磁场的一次磁通的目标相位进行相电流的校正。 这改善了由于相移而导致的扭矩下降，并且在将平均转矩保持在高水平的同时减小了扭矩波动。 本发明的系统可以任意调节同步电动机（40）的转矩波形，从而自由地控制同步电动机（40）的转矩特性。
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2.发明授权
公开(公告)号：US5990592A
公开(公告)日：1999-11-23
申请号：US129606
申请日：1998-08-05
CPC分类号： H02K1/276 , H02K21/14 , Y10T29/49012
摘要： The present invention provides a magnets containing-type motor that minimizes a cogging torque without lowering its output. In a magnets containing-type motor where permanent magnets are set in magnetic pole elements of a rotor, the dimensions of each magnetic pole element are determined to satisfy predetermined relations according to a variety of numerical elements of the motor. In accordance with a concrete arrangement, the dimensions of each magnetic pole element are determined, so as to enable either one of a magnetic pole element opening angle L2 and an equivalent magnetic pole element opening angle L3 to be expressed as (n+z).multidot.Pp+x.multidot.(g/R)+y.multidot.(gp/R), based on a predetermined relation between a parameter (t2-t1)/g and a predetermined threshold value. In this equation, gp denotes a length of a space between adjoining teeth; Pp denotes a central angular pitch of teeth; R denotes a radius of an inner face of a stator; g denotes an interval between the stator and the rotor; t2 denotes a thickness of a magnetic pole circumferential portion; t1 denotes a thickness of a magnetic pole element side portion; n denotes an arbitrary natural number; and x, y, and z are real numbers that satisfy -0.6.ltoreq.x.ltoreq.0.6, 0.3.ltoreq.y.ltoreq.0.5, and -0.06.ltoreq.z.ltoreq.-0.04.
摘要翻译： 本发明提供一种磁体收容型电机，其使齿槽转矩最小化而不降低其输出。 在将永磁体设置在转子的磁极元件中的磁铁式电动机中，根据电机的各种数值要素，确定各磁极元件的尺寸以满足规定的关系。 根据具体的结构，确定每个磁极元件的尺寸，以使得磁极元件开启角度L2和等效磁极元件开启角度L3中的任一个能够表示为（n + z）×Pp + xx（g / R）+ yx（gp / R），基于参数（t2-t1）/ g与预定阈值之间的预定关系。 在该等式中，gp表示相邻齿之间的间隔的长度; Pp表示齿的中心角距; R表示定子的内表面的半径; g表示定子和转子之间的间隔; t2表示磁极圆周部分的厚度; t1表示磁极元件侧部的厚度; n表示任意自然数; 并且x，y和z是满足-0.6≤x≤0.6,0.3≤y≤0.5,0.06≤y≤0.04的实数。
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