| 摘要 |
<p>PURPOSE:To attenuate noise along with operation and reduce the cost of output, by change-over-connecting the AC side circuit of an inverter circuit, to a squirrel-cage three-phase induction machine coupled with an internal combustion engine, and commercial three-phase power input. CONSTITUTION:In a first mode, a squirrel-cage three-phase induction machine 2 coupled with an internal combustion engine 1 is worked as a generator, and the power of three-phase AC is generated. This three-phase AC is fed to a three-phase motor 7 via an inverter circuit 4 connected by a change-over circuit 10, and an inverter circuit 8. In a second mode, the change-over circuit 10 is connected to a three-phase power plug socket 9, and to the three-phase motor 7, power from a commercial power source is fed. In this case, the internal combustion engine 1 can be stopped. In a third mode, to the DC side of the inverter circuit 8, the current of a battery 5 is fed, and the three-phase AC obtained in this AC circuit is fed to the three-phase motor 7.</p> |
