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41. 发明授权

US5736829A High-speed constant-horsepower motor 失效
标题翻译：高速恒马力电机
公开(公告)号：US5736829A
公开(公告)日：1998-04-07
申请号：US389570
申请日：1995-02-16
申请人： Jerry K. Goff
发明人： Jerry K. Goff
IPC分类号： H02P6/08 , H02P25/20 , H02P27/05 , H02P1/48
CPC分类号： H02P27/05 , H02P25/20 , H02P6/08
摘要： A high-speed constant-horsepower motor includes a rotor and a stator having a plurality of groups of windings which are separately driven. In one mode of operation, the polarity of the voltage applied to each winding is such that the windings behave as distinct electromagnets, each defining a separate magnetic pole. In another mode of operation, the polarity of voltage applied to some of the windings is reversed, such that pairs of adjacent windings behave as single electromagnets. In the latter mode, the effective number of magnetic poles is reduced by a factor of two. Thus, the effective number of magnetic poles of the motor can be varied electronically, even while the motor is operating. The invention makes it possible, in one example, to operate the motor as an eight-pole motor at low speeds, and as a four-pole motor at high speeds. The effective motor constants are changed appropriately from eight-pole to four-pole modes. The invention also includes a circuit which minimizes the number of slip rings, or other power transferring devices, required to implement the above-described invention on the windings of the rotor.
摘要翻译：一种高速恒马力电动机包括转子和具有分别被驱动的多组绕组的定子。在一种操作模式中，施加到每个绕组的电压的极性使得绕组表现为不同的电磁体，每个电磁体限定单独的磁极。在另一种操作模式中，施加到一些绕组的电压的极性是相反的，使得相邻的绕组对表现为单个电磁体。在后一种模式中，磁极的有效数目减少了2倍。因此，马达的有效磁极数量可以以电子方式变化，即使在马达运转时也是如此。本发明在一个示例中使得可以以低速操作电动机作为八极电动机，并且以高速度作为四极电动机。有效的电机常数从八极到四极模式适当改变。本发明还包括使转子的绕组上实施上述发明所需的滑环或其它动力传递装置的数量最小化的电路。

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