Zobrazeno 1 - 10
of 46
pro vyhledávání: '"Tohid Rahimi"'
Publikováno v:
Energies, Vol 17, Iss 15, p 3861 (2024)
Dielectric quality tests require a high AC voltage with a frequency range of 0.0001 Hz to 1000 Hz. However, providing a high AC voltage with such a frequency variety is challenging. Providing a high DC voltage and then applying such a voltage to an i
Externí odkaz:
https://doaj.org/article/6b86d940becf4c9d889407e180e3ed7c
Publikováno v:
IEEE Access, Vol 9, Pp 66738-66750 (2021)
In this paper, a new high efficiency soft-switching non-isolated three-port converter (TPC) is proposed. In the conventional TPC, three switches are required to process power in different directions between inputs and output. Providing soft-switching
Externí odkaz:
https://doaj.org/article/b03e84f7c2e24e9b9591b6049776dba4
Autor:
Tohid Rahimi, Lei Ding, Mostafa Kheshti, Rasoul Faraji, Josep M. Guerrero, Gibran David Agundis Tinajero
Publikováno v:
IEEE Access, Vol 9, Pp 74684-74702 (2021)
Due to the high penetration of renewable energy resources in microgrids (MGs), the grid inertia becomes low which leads to the grid to be vulnerable to large disturbances. The energy storage devices can play an important role to enhance the inertia o
Externí odkaz:
https://doaj.org/article/1d36439398384ba2822f11832c840876
Autor:
Rasoul Faraji, Lei Ding, Tohid Rahimi, Hosein Farzanehfard, Hossein Hafezi, Mohammad Maghsoudi
Publikováno v:
IEEE Access, Vol 9, Pp 107079-107094 (2021)
In this paper, to solve the hard-switching operation problem and the lack of existing a bidirectional power flow path from output to the energy storage device of the conventional three-port converter, a new soft-switched bidirectional multi-port conv
Externí odkaz:
https://doaj.org/article/858eba31c4694abd96d52ddd5aaa04dd
Publikováno v:
IEEE Access, Vol 9, Pp 132011-132024 (2021)
This paper presents a novel design of step-up DC-DC converters whose merits are: (i) The continuity of the input current has been kept; (ii) The polarity of the output voltage has been kept positive which provides the same ground of the input source
Externí odkaz:
https://doaj.org/article/203e5e614fe04cfdab6df2394258663d
Autor:
Seyed Saeid Heidari Yazdi, Tohid Rahimi, Saeideh Khadem Haghighian, Gevork B. Gharehpetian, Mehdi Bagheri
Publikováno v:
Frontiers in Energy Research, Vol 10 (2022)
The increase of Photovoltaics (PV) units’ penetration factor in the power grids might create overvoltage over the network buses. The active power curtailment (APC) and the reactive power provision methods use inverters to regulate their output acti
Externí odkaz:
https://doaj.org/article/8a7336dbe1794d37a4c2807cc4cc1fbb
Publikováno v:
Case Studies in Thermal Engineering, Vol 26, Iss , Pp 101134- (2021)
In many industrial applications, parallel connection of power semiconductor switches is widely used to achieve higher power levels and fault-tolerant operation. But there is a current imbalance between parallel connected switches in practical applica
Externí odkaz:
https://doaj.org/article/a06841ce3ccd4799a53dde2e5192a641
Publikováno v:
Symmetry, Vol 14, Iss 8, p 1735 (2022)
In recent years, in response to increasing environmental concerns, advances in renewable energy technology and reduced costs have caused a significant increase in the penetration of distributed generation resources in distribution networks. Nonethele
Externí odkaz:
https://doaj.org/article/28747b7e314745ecb2859c8348d14256
Autor:
Hossein Khoun Jahan, Reyhaneh Eskandari, Tohid Rahimi, Rasoul Shalchi Alishah, Lei Ding, Kent Bertilsson, Mehran Sabahi, Frede Blaabjerg
Publikováno v:
Energies, Vol 14, Iss 7, p 1915 (2021)
In this paper, a switched-capacitor multilevel inverter with voltage boosting and common-mode-voltage reduction capabilities is put forth. The proposed inverter is synthesized with one-half bridge and several switched-capacitor cells. Due to the volt
Externí odkaz:
https://doaj.org/article/37ce81629d164e8dae714481901fd011
Autor:
Gholam Ali Alizadeh, Tohid Rahimi, Mohsen Hasan Babayi Nozadian, Sanjeevikumar Padmanaban, Zbigniew Leonowicz
Publikováno v:
Energies, Vol 12, Iss 10, p 2016 (2019)
Frequency stability is an important issue for the operation of islanded microgrids. Since the upstream grid does not support the islanded microgrids, the power control and frequency regulation encounter serious problems. By increasing the penetration
Externí odkaz:
https://doaj.org/article/65629898c4a747508f87f1bc6bc87eee