| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide an AC motor driving a main motor and an auxiliary motor by switching them by a plurality of standard design inverters irrespective of a motor type. <P>SOLUTION: When p is a pole pair count, coils 11 and 12 stored in a plurality of slots 10 each constituting one pole for one phase are constituted of coils of 2p sets or 2p×1.5 sets. Arrangement positions to the slots and coil connections of the coils of 2p sets or 2p×1.5 sets are decided so that one synthetic magnetic pole is formed with a voltage vector caused by each coil set. Thus, the motor can be driven by inverters whose number is twice as much as 2p sets of the coils or is the same as the number of 2p×1.5 sets of the coils. The inverters are also driven by a rotation speed which is 60/p times as much as an inverter output frequency in the AC motor. <P>COPYRIGHT: (C)2011,JPO&INPIT |
