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1. (WO2017038363) ENERGY MANAGEMENT SYSTEM

Pub. No.:    WO/2017/038363    International Application No.:    PCT/JP2016/072888
Publication Date: Fri Mar 10 00:59:59 CET 2017 International Filing Date: Fri Aug 05 01:59:59 CEST 2016
IPC: H02J 7/35
H02J 3/32
H02J 3/38
H02J 7/00
H02M 3/155
H02M 3/28
H02M 7/48
Applicants: MURATA MANUFACTURING CO., LTD.
株式会社村田製作所
Inventors: ISHIKURA, Yuki
石倉祐樹
Title: ENERGY MANAGEMENT SYSTEM
Abstract:
An energy management system (1) is provided with: a power generation device (20) connected to a HVDC bus (10); a bidirectional DC-DC converter (30) connected to the HVDC bus (10); and an inverter (40) connected to the bidirectional DC-DC converter (30). The bidirectional DC-DC converter (30) is configured by connecting in series a non-insulating chopper converter (31), and an insulating LLC resonant converter (32), and the HVDC bus (10) is connected to a connection point between the non-insulating chopper converter and the insulating LLC resonant converter. The chopper converter (31) transforms a charge voltage of a secondary battery (B1) to a predetermined value, and outputs the voltage to the HVDC bus (10). The LLC resonant converter (32) transforms a direct current voltage inputted from the HVDC bus (10), and outputs the voltage to an inverter (40). Consequently, the energy management system, which is capable of achieving highly efficient voltage conversion and insulation at one time, is provided.