| 摘要 |
PROBLEM TO BE SOLVED: To implement precise control in a short time. SOLUTION: A DC-DC converter comprises a first loop circuit composed of a low voltage-side capacitor CL, an inductance LP, and a first switching element X; and a second loop circuit composed of a second switching element U connected with the inductance LP and a high voltage-side capacitor CH. The DC-DC converter uses the voltage across the low voltage-side capacitor CL as low-side voltage and the voltage across the high voltage-side capacitor CH as high-side voltage. The current iP(t) passing through the inductance LP is detected in each sampling cycle TS, and the difference between each detected current and a command current j(t) is determined as error functionΔt*j(t)-iP(t). Switching mode at a time tn +Tc for the switching elements X and U and gate signals is selected according to the orientation of error functionΔ(tn ) measured at each sample time t0 , 01 ,..., tn , tn+1 .
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