| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a voltage type inverter controller which does not require difficult adjustment and can operate continuously without being tripped by overvoltage or undervoltage during momentary service interruption, and to provide its operating method. <P>SOLUTION: The voltage type inverter comprises a circuit 36 for operating power output from a voltage type inverter controller 20 having a voltage detection circuit 5 for detecting the terminal voltage of a smoothing capacitor 2, a circuit 6 for detecting momentary service interruption of an AC power supply, a circuit 8 for operating an output voltage command, a PWM control circuit 9 for controlling a PWM inverter circuit 3, and a base drive circuit 10 for driving the PWM control circuit 9, and a circuit 7 for operating a power output target value and a speed command value during momentary service interruption. <P>COPYRIGHT: (C)2008,JPO&INPIT |
