公开(公告)号：US20250070639A1

公开(公告)日：2025-02-27

申请号：US18619056

申请日：2024-03-27

Applicant: Delta Electronics (Shanghai) Co.,Ltd.

Inventor： Litao XIA ,  Xinmin BAI ,  Jinfa ZHANG ,  Bo WEN ,  Zhiyu SHEN ,  PETER MANTOVANELLI BARBOSA

IPC: H02M1/00 ,  H02M1/12 ,  H02M3/158

Abstract: The disclosure discloses a power conversion system and a control method, the control method includes: providing a power conversion module which includes a damping circuit and a first capacitor connected in series, and a controller, wherein the damping circuit includes a first inductor, a first switch, a second switch, and a second capacitor; obtaining a first current reference value according to an input voltage of the power conversion module, a voltage of the second capacitor, and a voltage reference value; obtaining a second current reference value according to the input voltage of the power conversion module and a current signal related to an input current; and outputting a driving signal according to an inductor current flowing through the first inductor and an inductor current reference value, wherein the current reference value is obtained according to the first current reference value and the second current reference value.

公开(公告)号：US20250070672A1

公开(公告)日：2025-02-27

申请号：US18237143

申请日：2023-08-23

Applicant: Delta Electronics (Shanghai) Co.,Ltd.

Inventor： Litao XIA ,  Xinmin BAI ,  Jinfa ZHANG ,  Bo WEN ,  Zhiyu SHEN ,  PETER MANTOVANELLI BARBOSA

IPC: H02M3/158 ,  H02M1/15

Abstract: The invention discloses a non-isolated DC/DC power converter and a power conversion apparatus. The non-isolated DC/DC power converter comprises a power module comprising a first power conversion circuit, the first power conversion circuit being a non-isolated DC/DC conversion circuit, a first output end of the first power conversion circuit is connected with a first inductor, and a second output end of the first power conversion circuit is connected with a second inductor; and an oscillation suppression module comprising a second power conversion circuit, a first terminal of the second power conversion circuit coupled in parallel to an input end of the first power conversion circuit, a first terminal current of the second power conversion circuit being in phase with at least partial of AC components of an input voltage of the oscillation suppression module, and the second power conversion circuit being a bidirectional DC/DC conversion circuit.

公开(公告)号：US20200007065A1

公开(公告)日：2020-01-02

申请号：US16454478

申请日：2019-06-27

Applicant: Delta Electronics (Shanghai) CO., LTD

Inventor： Kai CHEN ,  Wenjiang ZHAO ,  Yongqiang LANG ,  PETER MANTOVANELLI BARBOSA

IPC: H02P27/04 ,  H02P1/26

Abstract: A method of modulating a cascaded three-phase VFD, including: obtaining space voltage vectors according to states and output levels of switches of power units in each stage, and dividing the vectors into large vectors, medium vectors, small vectors and zero vectors according to their lengths; arranging the vectors into a vector space, and dividing the vector space into sectors, wherein each sector corresponds to a group of the large vector, the medium vector, the small vector and the zero vector; determining a sector in which a reference voltage vector is located, wherein the reference voltage vector is composed by the group of vectors; calculating action time of the vectors in the group; allocating an action order to the vectors; and generating a three-phase modulated wave signal based on the action orders and the action time.