The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.

The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.

Date of Patent:
Aug. 06, 2019

Filed:

Jun. 16, 2017
Applicant:

Murata Manufacturing Co., Ltd., Nagaokakyo-shi, Kyoto-fu, JP;

Inventors:

Yue Ma, Nagaokakyo, JP;

Hitoshi Tsuji, Nagaokakyo, JP;

Assignee:

MURATA MANUFACTURING CO., LTD., Nagaokakyo-Shi, Kyoto-Fu, JP;

Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H02J 3/38 (2006.01); H02J 7/35 (2006.01); H02J 7/00 (2006.01);
U.S. Cl.
CPC ...
H02J 3/385 (2013.01); H02J 3/383 (2013.01); H02J 7/0013 (2013.01); H02J 7/35 (2013.01); Y02E 10/58 (2013.01); Y02P 90/50 (2015.11);
Abstract

An energy management system that includes a power generating device, bidirectional DC-DC converter, and inverter connected to an HVDC bus. A gain of a voltage change to a current change in the bidirectional DC-DC converter is equal to the gain in the inverter. When an output power of the inverter or the bidirectional DC-DC converter varies in response to a variation in an output current of the power generating device, the energy management system can control the output power of the inverter to conform to a target value by adjusting an offset of gain characteristics of the bidirectional DC-DC converter to gain characteristics of the inverter. As a result, the energy management system is capable of stabilizing the output power of the inverter.


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