| 摘要 |
<p><P>PROBLEM TO BE SOLVED: To provide an improved universal motor, particularly in relation to a rotor thereof. <P>SOLUTION: The universal motor includes: a stator 10 and the rotor 12 rotatably installed in the stator. The stator includes a stator core 20 having a yoke, n primary poles 26 with windings 30 wound thereon, and n auxiliary poles 28. The primary poles and auxiliary poles are alternately arranged on the radially inner side of the yoke in a circumferential direction thereof. When the windings 30 are electrified, n primary magnetic poles and n auxiliary magnetic poles are formed at the primary poles 26 and auxiliary poles 28 respectively, wherein n is an integer greater than 1. All the primary magnetic poles have the same polarity and the polarity of each auxiliary magnetic pole is opposite to the polarity of the primary magnetic pole. <P>COPYRIGHT: (C)2010,JPO&INPIT</p> |
