POWER SYSTEM

• Main Authors: HAIZUKA SHINICHI, YAMADA TAKESHI, KONNO HIRONORI
• Format: Patent
• Language: English; Japanese
• Published: 20.06.2019
• Subjects: APPARATUS FOR CONVERSION BETWEEN AC AND AC, BETWEEN AC AND DC,OR BETWEEN DC AND DC, AND FOR USE WITH MAINS OR SIMILAR POWERSUPPLY SYSTEMS; CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTINGELECTRIC POWER; CONTROL OR REGULATION THEREOF; CONTROLLING; CONVERSION OF DC OR AC INPUT POWER INTO SURGE OUTPUTPOWER; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER; ELECTRICITY; GENERATION; PHYSICS; REGULATING; SYSTEMS FOR REGULATING ELECTRIC OR MAGNETIC VARIABLES; SYSTEMS FOR STORING ELECTRIC ENERGY

To provide a power system in which problems are hardly caused by a fuel cell power generation system having a current voltage characteristic differing from an assumed system even when MPPT control is executed by a DC power conversion device.SOLUTION: A characteristic conversion circuit 100 exists on a path connecting a fuel cell power generation system 40 with a DC power conversion device 20. The characteristic conversion circuit 100 includes a first feedback circuit 110 and a second feedback circuit 120. The first feedback circuit 110 is used for stipulating a target value for the upper limit of output voltage of the characteristic conversion circuit 100. The second feedback circuit 120 is used for adjusting output voltage of the characteristic conversion circuit 100 at the time of the output voltage of the characteristic conversion circuit 100 becoming a peak to a value within a predetermined range.SELECTED DRAWING: Figure 3 【課題】直流電力変換装置にＭＰＰＴ制御を実行させても、燃料電池発電システムが想定システムとは異なる電流電圧特性を有することに起因する問題が生じ難い電力システムを提供する。【解決手段】特性変換回路１００は、燃料電池発電システム４０と直流電力変換装置２０とを接続する経路上に存する。特性変換回路１００は、第１フィードバック回路１１０と、第２フィードバック回路１２０と、を有する。第１フィードバック回路１１０は、特性変換回路１００の出力電圧の上限の目標値を規定するのに用いられる。第２フィードバック回路１２０は、特性変換回路１００の出力電力がピークになるときにおける特性変換回路１００の出力電圧を所定範囲内の値に調整するのに用いられる。【選択図】図３