Invention Grant
- Patent Title: Apparatus for controlling power converter
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Application No.: US16185176Application Date: 2018-11-09
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Publication No.: US10374517B2Publication Date: 2019-08-06
- Inventor: Kenji Tomita , Seiji Iyasu , Yuichi Handa
- Applicant: SOKEN, INC. , DENSO CORPORATION
- Applicant Address: JP Nisshin JP Kariya
- Assignee: SOKEN, INC.,DENSO CORPORATION
- Current Assignee: SOKEN, INC.,DENSO CORPORATION
- Current Assignee Address: JP Nisshin JP Kariya
- Agency: Oliff PLC
- Priority: JP2017-217138 20171110
- Main IPC: H02M3/335
- IPC: H02M3/335 ; H02M3/337

Abstract:
An apparatus for controlling a power converter includes a first converter configured to convert an AC voltage into a DC voltage by operations of an input side switch, a DC link capacitor charged with the DC voltage from the first converter, and a second converter configured to step down the DC voltage across the DC link capacitor by operations of one or more output side switches. In the apparatus, a lower limit calculator calculates a lower limit of the DC voltage across the DC link capacitor based on an output voltage of the second converter, a turns ratio of a transformer of the second converter, and a ratio of a turn-on period to one switching period for the one or more output side switches. A switch controller operates the input side switch to control the voltage across the DC link capacitor to a command voltage higher than the lower limit.
Public/Granted literature
- US20190149055A1 APPARATUS FOR CONTROLLING POWER CONVERTER Public/Granted day:2019-05-16
Information query
IPC分类: