| 摘要 |
Detected DC voltage value estimation means samples detected DC voltage values at specific intervals of a period T, stores detected DC voltage values V n to V n-m detected at a present time t n up to a sampling time t n-m which is m sampling cycles (m >=1) before the present time t n, and calculates a DC voltage estimation value V n+1 at a next time t n+1 using the detected DC voltage values V n to V n-m, expressing a curve connecting the voltage values V n to V n-m by a specific function. Output voltage control means into which the DC voltage estimation value V n+1 is input corrects an output voltage command value and outputs the corrected output voltage command value to a power converter.
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