| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide an inverter control circuit for generating a PWM signal so that an inverter circuit may stably continue operation even if a connected three-phase power system is in a voltage unbalance state. <P>SOLUTION: In the inverter control circuit 10 for PWM-controlling the inverter circuit 2, correction value signals ΔXu, ΔXv and ΔXw of the phases generated in a correction value generating part 11, are added to system command value signals Ku, Kv and Kw of the phases generated in a system command value generating part 12. Thus, command value signals Xu, Xv and Xw of the phases are generated. A PWM signal generating part 14 generates the PWM signals Pu, Pv and Pw of the phases, based on the command value signals of the phases. A system command value generating part 12 generates the system command value signals Ku, Kv and Kw from the system voltage signals Vs of the phases of the three-phase power system B, which are detected by a system voltage sensor 9. <P>COPYRIGHT: (C)2011,JPO&INPIT |
