| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a power convertor equipped with a trace back function capable of analyzing the cause that leads to unstable control. <P>SOLUTION: The convertor comprises a power converter 2, and a control means 3 that controls an output power of the power converter. The control means 3 has a storage means provided with a microprocessor 31; a memory 32 for temporary saving the control information of past and current that is provided via of the microprocessor 31 in time series; a nonvolatile memory 33 for saving the control information which has been saved temporarily and also comprises a device failure detector 34 for detecting device failure, based on the control information provided from the microprocessor 31; and a control abnormality detector 35 for detecting abnormality of control state, based on the control information provided from the microprocessor 31. If any one of the device failure detector 34 and the control abnormality detector 35 operates, the control information temporarily saved in the memory 32 is saved in the nonvolatile memory 33. <P>COPYRIGHT: (C)2008,JPO&INPIT |
