| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide power conversion equipment which can get a good current response property even in case that the model of an observer does not accord. <P>SOLUTION: It includes an observer (11), a vibration component extractor (14), the first subtractor (12), and the second subtractor (13). It generates an estimated difference current signal Idif by reducing the estimated current signal Iobs being the output of the observer 11 from the detected current signal Ifb, and extracts the vibration components Ivib from the estimated difference current signal Idif, and further extracts only the vibration component current signal Ivib to be removed with a vibration component current extractor (14), and uses the current signal Ifb2 subtracted from the detected current signal Ifb as the current feedback signal of a current controller 2. <P>COPYRIGHT: (C)2008,JPO&INPIT |
