Results 11 to 20 of about 508 (157)
IET Power Electronics, EarlyView., 2022 Abstract In this paper, a reduced switch count single‐phase hybrid multilevel inverter (MLI) is presented. Level generation unit (LGU) and polarity changing unit (PCU) are the two parts of the presented topology which are connected in series. Other advantages of the proposed topology include the reduced switch count, higher level generation with ...
Mohammad Wasiq +6 more
wiley +1 more source
IET Power Electronics, EarlyView., 2023 This article presents a Fifteen‐level inverter topology that has a lesser number of switches (12) and can accommodate isolated DC sources. The total harmonic elimination (THD) of the proposed topology using genetic algorithm is within the IEEE 519 standards. Further, the fifteen‐level inverter is implemented in Hardware and firing pulses were generated
Yogesh Joshi +4 more
wiley +1 more source
VERIFICATION OF HYBRID REAL TIME HVDC SIMULATOR IN CHEJU-HAENAM HVDC SYSTEM [PDF]
IFAC Proceedings Volumes, 2006 Abstract In this paper Hybrid Real Time HVDC Simulator for both operator's training and researching in Cheju-Haenam HVDC system is proposed and its performance is verified by RTDS(Real Time Digital Simulator), EMTDC(Electro-Magnetic Transient system for DC), PSS/E(Power System Simulator for Engineering), and experienced scenarios.
B.M. Yang +5 more
openaire +2 more sources
IET Generation, Transmission & Distribution, 2021 The multi‐terminal hybrid line commutated converter (LCC)/modular multilevel converter (MMC)‐based high voltage dc (HVDC) has been applied to solve the simultaneous commutation failure problem in East China.
Chenhao Zhang +6 more
doaj +1 more source
Research on emergency DC power support coordinated control for hybrid multi-infeed HVDC system
Archives of Electrical Engineering, 2020 Based on the respective characteristics of line-commutated converter high-voltage direct current (LCC-HVDC) and voltage-source converter high voltage direct cur- rent (VSC-HVDC), two additional emergency DC power support (EDCPS) controllers are designed,
Congshan Li +3 more
doaj +1 more source
Research on protection adaptability and optimization scheme of VSC/LCC DC parallel hybrid system
AIP Advances, 2023 With the continuous development of high-voltage direct current (HVDC) technology and the relative concentration of power load and power, the HVDC parallel hybrid system will inevitably appear again.
A. Ting Wang +5 more
doaj +1 more source
Energies, 2021 Increasing offshore wind farms are rapidly installed and planned. However, this will pose a bottle neck challenge for long-distance transmission as well as inherent variation of their generating power outputs to the existing AC grid. VSC-HVDC links could
Duc Nguyen Huu
doaj +1 more source
The hybrid simulation system of hydropower generation units in islanding AC grid and its applications [PDF]
ITM Web of Conferences, 2022 It is a trend for the large hydropower bases to transport the electricity to consuming center with High Voltage Direct Current (HVDC) transmission lines. The fault of HVDC has great significance impact on hydropower units in islanding sending AC grid. In
Zhang Shuang +3 more
doaj +1 more source
An approach to suppress low-frequency oscillation in the hybrid multi-Infeed HVDC of mixed H2/H∞ robust-based control theory [PDF]
Archives of Electrical Engineering, 2022 A hybrid multi-infeed HVDC (HMIDC) system is composed of line-commutated converter-based high-voltage direct current (LCC-HVDC) and voltage-source converterbased high-voltage direct current (VSC-HVDC), whose receiving ends have electrical coupling.
Congshan Li +5 more
doaj +1 more source
Studies of commutation failures in hybrid LCC/MMC HVDC systems [PDF]
Global Energy Interconnection, 2020 A hybrid of line commutated converters(LCCs) and modular multi-level converters(MMCs) can provide the advantages of both the technologies. However, the commutation failure still exists if the LCC operates as an inverter in a hybrid LCC/MMC system. In this paper, the system behavior during a commutation failure is investigated.
Gen Li +6 more
openaire +5 more sources