公开(公告)号：US10355492B2

公开(公告)日：2019-07-16

申请号：US15567771

申请日：2016-02-23

Applicant: OMRON Corporation

Inventor： Yoshihiko Yamaguchi ,  Makoto Ohashi ,  Osamu Uchida ,  Akihiro Takeshima ,  Takashi Kitamura

IPC: H02J3/38 ,  G05F1/67 ,  H02M3/00 ,  H02J7/35

Abstract: A rechargeable battery controller is combined with a rechargeable battery and used in an existing PV system. The controller includes a DC-DC converter, which allows power to be passed between a power line and a rechargeable battery, and a control unit, which determines whether maximum power point tracking (MPPT) control using hill climbing is being performed by a PCS based on an input voltage or current value of the PCS. The control unit regulates charge/discharge power of the rechargeable battery to allow input power of the PCS to be a target value based on the input voltage and current values of the PCS while MPPT control using hill climbing is performed, and maintains, in a period during which MPPT control using hill climbing is not performed, the charge/discharge power to be the power at a beginning of the period.