公开(公告)号：US20250088122A1

公开(公告)日：2025-03-13

申请号：US18243189

申请日：2023-09-07

Applicant: Eaton Intelligent Power Limited

Inventor： Zhe Zhang ,  Hua Qiang Li ,  Thomas M. Ruchti

IPC: H02M7/5395 ,  H02M1/08

Abstract: A system includes: an energy storage apparatus; an inverter electrically coupled to the energy storage apparatus; and a pulse width modulation module. The pulse width modulation module is configured to: determine a modulation index based on a voltage of the energy storage apparatus and a target output voltage of the inverter; select one of a plurality of pulse width modulation (PWM) approaches based on the modulation index; and determine a switching command for the inverter based on the target output voltage and the selected one of the plurality of PWM modulation approaches.

公开(公告)号：US20250030352A1

公开(公告)日：2025-01-23

申请号：US18224829

申请日：2023-07-21

Applicant: Eaton Intelligent Power Limited

Inventor： Hua Qiang Li ,  Yaojin Mo ,  Zhe Zhang ,  Jimmy Qi

IPC: H02M5/458 ,  H02M1/44

Abstract: In one aspect, a power converter includes: an energy storage apparatus; an inverter electrically coupled to the energy storage apparatus; and a voltage boost system configured to: determine a modulation index based on a DC voltage of the energy storage apparatus and a target output voltage of the inverter; and determine whether the target output voltage is in a voltage boost region based on the modulation index; if the target output voltage is in the voltage boost region: determine an adjustment value based on the modulation index; and adjust one or more of the target output voltage and an associated output voltage phase angle based on the adjustment value.

公开(公告)号：US20250125717A1

公开(公告)日：2025-04-17

申请号：US18802242

申请日：2024-08-13

Applicant: Eaton Intelligent Power Limited

Inventor： Mahesh Mysore Swamy ,  Hua Qiang Li

IPC: H02M1/34 ,  H02M1/32

Abstract: A system includes: a DC bus electrically configured for connection to one or more of a rectifier and an inverter, the DC bus including a positive bus and a negative bus; and a DC link electrically connected to the DC bus. The DC link includes: an energy storage apparatus includes at least two energy storage elements; and a fuse assembly electrically connected the energy storage apparatus and to one of the positive bus and the negative bus.

公开(公告)号：US20250030247A1

公开(公告)日：2025-01-23

申请号：US18764660

申请日：2024-07-05

Applicant: Eaton Intelligent Power Limited

Inventor： Mahesh Mysore Swamy ,  Hua Qiang Li

IPC: H02J3/36 ,  H02M1/14 ,  H02M7/5387

Abstract: A power converter includes an electrical network including a plurality of intermediate nodes. Each intermediate node is configured to connect to one phase of an alternating current (AC) electrical power source, the electrical network is configured to convert AC electrical current to direct current (DC) electrical current, and the electrical network includes a plurality of electronic switches. The power converter also includes a DC link electrically connected to the electrical network; a pre-charge path electrically connected to the DC link, the pre-charge path including a pre-charge impedance; a control path electrically connected to one of the electronic switches, the control path including a relay; and a control system configured to analyze a 10 plurality of electrical measurements from the power converter to determine a status output; and determine whether to control the relay to change state based on the status output.