Abstract:
This disclosure discloses a power conversion system including a first power converter, a second power converter, and a power storage device. The second power converter includes a control signal generation part, a detection signal processing part, and a state diagnosis part. The control signal generation part is configured to perform at least one of superposition of a predetermined AC voltage on a DC voltage in a second DC power and superposition of a predetermined AC current on a DC current in the second DC power. The detection signal processing part is configured to detect at least one of a detection value of the DC voltage superposed with the AC voltage and a detection value of the DC current superposed with the AC current. The state diagnosis part is configured to diagnose a state of the power storage device based on the detection value.
Abstract:
A power conversion device includes a power conversion semiconductor element having an electrode, an electrode conductor electrically connected to the electrode of the power conversion semiconductor element and including a side face and an upper end portion having a substantially flat upper end face, and a seal material formed of resin to cover the power conversion semiconductor element and the side face of the electrode conductor. The substantially flat upper end face of the electrode conductor is exposed from an upper surface of the seal material, and the upper end portion of the electrode conductor having the substantially flat upper end face has a projecting portion projecting sideward.