| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide an elevator controller in which variation due to a DC voltage can be suppressed by compensating the command value of converter control when the torque is varied abruptly. <P>SOLUTION: Based on a current signal detected by an inverter current detector 11 and a torque command being outputted from a speed controller 15, a power operating unit 31 operates power of torque variation. A converter voltage compensation unit 33 divides the operation result (compensation electric energy) by a voltage detected by a DC voltage detector 4 to obtain a compensation amount which is then added to a command signal of converter current output from a voltage controller 6. Variation due to a DC voltage can thereby be suppressed by a command compensated by the compensation amount outputted from the converter voltage compensation unit 33 when the motor torque is varied abruptly. <P>COPYRIGHT: (C)2005,JPO&NCIPI |
