公开(公告)号：US11683008B2

公开(公告)日：2023-06-20

申请号：US17380418

申请日：2021-07-20

Applicant: Sungrow Power Supply Co., Ltd.

Inventor： Xinyu Wang ,  Anying Jiang ,  Shun Ding ,  Yanfei Yu ,  Xiaoxun Li

IPC: H02S40/32 ,  H02M1/32 ,  H02M1/00

CPC classification number: H02S40/32 ,  H02M1/007 ,  H02M1/322

Abstract: A photovoltaic inverter, a photovoltaic system, and a method for controlling discharging are provided. The photovoltaic inverter includes a first DCDC converter, an inverter circuit, a first discharging circuit, and a controller. A port capacitor is connected between a positive input end and a negative input end of the first DCDC converter. The port capacitor includes an X capacitor and a first group of Y capacitors. The first discharging circuit is connected between a common terminal of the first group of Y capacitors and a direct current bus, where the common terminal of the first group of Y capacitors is grounded. The controller is configured to control, when receiving a rapid shutdown instruction, the first discharging circuit to operate. The first discharging circuit is configured to discharge electrical energy of the port capacitor.

公开(公告)号：US20220029582A1

公开(公告)日：2022-01-27

申请号：US17380418

申请日：2021-07-20

Applicant: Sungrow Power Supply Co., Ltd.

Inventor： Xinyu Wang ,  Anying Jiang ,  Shun Ding ,  Yanfei Yu ,  Xiaoxun Li

IPC: H02S40/32 ,  H02M1/00 ,  H02M1/32

Abstract: A photovoltaic inverter, a photovoltaic system, and a method for controlling discharging are provided. The photovoltaic inverter includes a first DCDC converter, an inverter circuit, a first discharging circuit, and a controller. A port capacitor is connected between a positive input end and a negative input end of the first DCDC converter. The port capacitor includes an X capacitor and a first group of Y capacitors. The first discharging circuit is connected between a common terminal of the first group of Y capacitors and a direct current bus, where the common terminal of the first group of Y capacitors is grounded. The controller is configured to control, when receiving a rapid shutdown instruction, the first discharging circuit to operate. The first discharging circuit is configured to discharge electrical energy of the port capacitor.