公开(公告)号：US20240305215A1

公开(公告)日：2024-09-12

申请号：US18262671

申请日：2021-12-20

Applicant: OMRON Corporation

Inventor： Aya MURATA ,  Takanori ISHII ,  Takayoshi TAWARAGI

IPC: H02M7/483 ,  H02M1/00 ,  H02M1/12

CPC classification number: H02M7/4837 ,  H02M1/0095 ,  H02M1/123

Abstract: A power converter includes a DC capacitor circuit, a first capacitor circuit including a first flying capacitor, and a second capacitor circuit including a second flying capacitor. A controller increases or decreases a period for charging and discharging a first DC capacitor and a second DC capacitor based on a deviation of a detected voltage value of the first flying capacitor from a voltage command value and a deviation of a detected voltage value of the second flying capacitor from a voltage command value, and outputs AC power from a second output terminal connected to a node between a source terminal of a second switch and a drain terminal of a third switch in the first capacitor circuit and from a first output terminal connected to a node between a source terminal of a sixth switch and a drain terminal of a seventh switch in the second capacitor circuit.

公开(公告)号：US20240088778A1

公开(公告)日：2024-03-14

申请号：US18263167

申请日：2021-12-20

Applicant: OMRON Corporation

Inventor： Takayoshi TAWARAGI ,  Takanori ISHII ,  Aya MURATA

IPC: H02M1/088 ,  H02M7/539

CPC classification number: H02M1/088 ,  H02M7/539

Abstract: A controller in a power conversion unit increases or decreases, based on a detected voltage value of a first flying capacitor, a value of a gate voltage to be applied to a gate terminal of a target switch to be controlled selectively from first to fourth switches in a first capacitor circuit to cause conduction between a drain terminal and a source terminal of the target switch, or changes a gradient of the gate voltage value. The controller increases or decreases, based on a detected voltage value of the second flying capacitor, a value of a gate voltage to be applied to a gate terminal of a target switch to be controlled selectively from fifth to eighth switches in a second capacitor circuit to cause conduction between a drain terminal and a source terminal of the target switch, or changes a gradient of the gate voltage value.