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1. (WO2018124521) SWITCHING CONTROL METHOD FOR ISOLATED BIDIRECTIONAL DC-DC CONVERTER

Pub. No.:    WO/2018/124521    International Application No.:    PCT/KR2017/014165
Publication Date: Fri Jul 06 01:59:59 CEST 2018 International Filing Date: Wed Dec 06 00:59:59 CET 2017
IPC: H02M 3/335
H02M 1/08
H02J 3/32
Applicants: HYOSUNG HEAVY INDUSTRIES CORPORATION
효성중공업 주식회사
Inventors: JEONG, Byung Hwan
정병환
LEE, Jeong Min
이정민
Title: SWITCHING CONTROL METHOD FOR ISOLATED BIDIRECTIONAL DC-DC CONVERTER
Abstract:
The present invention provides a switching control method for an isolated bidirectional DC-DC converter, the method enabling highly efficient control by mixedly using a plurality of switching controls according to a battery voltage in the isolated bidirectional DC-DC converter connected between a DC grid system and the battery. According to the present invention, the isolated bidirectional DC-DC converter controls switching of a first switching unit and a second switching unit to control a flow of power by changing a bidirectional DC-DC voltage between the DC grid system and the battery, wherein the first and second switching units are switched by mixing PSM switching control, SPWM switching control, and DPWM switching control according to a voltage charged to the battery and a load capacity, thereby improving efficiency of a system.