Zobrazeno 1 - 10
of 37
pro vyhledávání: '"Naotaka Okada"'
Publikováno v:
IEEE Journal of Emerging and Selected Topics in Power Electronics. 10(no. 3):3087-3099
Conventional shunt capacitors (SC) with series reactor can filter the harmonic currents generated by the load in addition to improving the power factor. However, a trade-off exists between the harmonic filtering effect and the harmonic voltage tolera
Publikováno v:
IEEJ Transactions on Electrical and Electronic Engineering. 17:780-791
Publikováno v:
2022 IEEE PES 14th Asia-Pacific Power and Energy Engineering Conference (APPEEC).
Publikováno v:
IEEJ Transactions on Power and Energy. 141:229-232
Publikováno v:
IEEJ Transactions on Power and Energy. 141:27-35
This paper proposes a novel control method for the shunt capacitor equipped with a series inverter (ISC) in order to use with existing shunt capacitors in parallel. The proposed method controls the equivalent impedance of the ISC in the normal operat
Publikováno v:
2020 23rd International Conference on Electrical Machines and Systems (ICEMS).
Voltage distortion of 2 kHz to 9 kHz may occur in the distribution line due to resonance in the system, and the generation conditions and mechanism have been revealed. For frequencies below 2 kHz, it is desirable to analyze the cause of voltage disto
Publikováno v:
2020 5th IEEE Workshop on the Electronic Grid (eGRID).
This paper proposes a protection circuit for the shunt capacitor equipped with a series inverter (active SC) under a voltage sag in the distribution grid. The voltage sag causes the discharge of the shunt capacitors, resulting in a large inrush curre
Publikováno v:
2020 International Conference on Smart Grids and Energy Systems (SGES).
In some distribution grids, we sometimes open shunt capacitors (SCs) to eliminate the problem of voltage rise. However, the opening of SCs changes the fifth harmonics characteristics, that can also be changed by another distribution feeder. Neverthel
Publikováno v:
2020 55th International Universities Power Engineering Conference (UPEC).
This paper proposes a novel control system for the shunt capacitor equipped with a series inverter with high compatibility with conventional shunt capacitors. The proposed system damps the harmonic resonance of the distribution grid, as its current i
Autor:
Kenichiro Sano, Naotaka Okada, Hiroshi Mochikawa, Yushi Koyama, Yosuke Nakazawa, Atsuhiko Kuzumaki
Publikováno v:
IEEE Transactions on Power Electronics. 33:7411-7423
We have developed a full-scale prototype of transformerless static synchronous compensator (STATCOM), rated at 6.6 kV and 100 kVA, based on a hybrid cascade multilevel converter using SiC devices. The topology employs multivoltage converter cells, Si