CHARGE/DISCHARGE CIRCUIT, CONTROL METHOD FOR CHARGE/DISCHARGE CIRCUIT, CONTROL DEVICE FOR CHARGE/DISCHARGE CIRCUIT, AND DIRECT POWER CONVERTER

摘要

Sampling of a control system that controls an inverter and updating of a command value are prevented from being degraded, even when the resonance of an LC filter is suppressed using a suppressing current. In a block 10a, a current distribution factor generator 11 receives an amplitude Vm of a single-phase AC voltage Vin, an amplitude Im of an input current, a command value Idc* of a DC current Idc, a command value Vc* of a both-end voltage Vc, and a power angular velocity É, and outputs a current command value Ib*. A resonance suppression controller 15 receives a reactor voltage VL, and outputs a correction value k·VL. A subtractor 17 subtracts the correction value k·VL from the current command value Ib*, and provides the result to a chopper controller 16. The chopper controller 16 outputs a boost duty dl based on a corrected current command value (Ib* - k·VL). A comparator 14 compares the booster ratio dl with a carrier C2, and outputs the result as a control signal SSI.