公开(公告)号：US20180130143A1

公开(公告)日：2018-05-10

申请号：US15393490

申请日：2016-12-29

Applicant: KOREA INSTITUTE OF ENERGY RESEARCH

Inventor： Soo Bin HAN ,  Seaseung OH ,  Su Yong CHAE ,  Jaejoon CHOI

IPC: G06Q50/06 ,  G05F1/66 ,  G06Q30/02 ,  G06Q10/06

CPC classification number: G06Q50/06 ,  G05F1/66 ,  G06Q10/06313 ,  G06Q30/0283 ,  Y02P90/82 ,  Y04S50/14

Abstract: Provided is a control method of a complex energy system that supplies heat and power to energy consumers through a heat network and a power network. The control method includes monitoring energy consumption information of the energy consumers and confirming an energy price applied to each of the energy consumers, calculating a total energy consumption cost of the energy consumers according to the energy price and the energy consumption information, and controlling a cogenerator and a heat generator so that a sum of a power supply amount of the cogenerator and a power consumption amount from an external power grid is equal to a total power consumption amount of the energy consumers, a sum of a heat supply amount of the cogenerator and a heat supply amount of the heat generator is equal to a total heat consumption amount of the energy consumers, and a target function value obtained by subtracting the total energy consumption cost from a sum of a power consumption cost from the external power grid and operating costs of the cogenerator and the heat generator is maximized.

公开(公告)号：US20200091814A1

公开(公告)日：2020-03-19

申请号：US16299801

申请日：2019-03-12

Applicant: KOREA INSTITUTE OF ENERGY RESEARCH

Inventor： Seaseung OH ,  Suyong CHAE ,  Yujin SONG ,  Jongbok BAEK

IPC: H02M1/12

Abstract: The present disclosure relates to frequency control of power conversion modules for decreasing THD (Total Harmonic Distortion) in a power conversion device in which a plurality of power conversion modules operate in parallel. In one aspect of the present disclosure, an embodiment provides a power conversion device comprising a plurality of power conversion modules being connected in parallel to receive input power and provide output AC power, and a frequency controller controlling each operating frequency of the plurality of power conversion modules, wherein, the frequency controller may include a function as a first frequency regulating step for regulating each operating frequency of the plurality of power conversion modules, so that the operating frequencies of the plurality of power conversion modules have a specific relationship with each other.