ORCID Profile
0000-0001-6485-3465
Current Organisations
University of Tehran
,
Shahid Beheshti University
,
Deakin University
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Publisher: Institute of Electrical and Electronics Engineers (IEEE)
Date: 2023
Publisher: Institute of Electrical and Electronics Engineers (IEEE)
Date: 2022
Publisher: MDPI AG
Date: 16-06-2021
DOI: 10.3390/EN14123584
Abstract: We designed and implemented a single-switch step-up DC-DC converter based on cascaded boost and Luo converters. The proposed converter demonstrated a quadratic voltage gain and a high efficiency, which makes it suitable for renewable energy applications, where a high voltage gain ratio is desired without imposing a high number of bulky items or employing a high duty cycle of the active switches. This converter benefits from the continuity of the input current waveform, which equips the maximum utilisation of renewable energy sources. While a transformer-less high voltage-gain was achieved, the voltage and current stresses of the power switch and diodes were kept low in comparison with the existing quadratic DC-DC converters. We analysed the converter in both continuous and discontinuous conduction modes. A non-ideal model of components was considered for power loss and efficiency calculations and comparisons. Finally, the simulation results were extracted with PLECS and validated with experiments on a 120 W prototype.
Publisher: IEEE
Date: 04-2019
Publisher: IEEE
Date: 02-2019
Publisher: IEEE
Date: 04-08-2020
Publisher: IEEE
Date: 02-02-2021
Publisher: Institution of Engineering and Technology (IET)
Date: 06-04-2022
DOI: 10.1049/PEL2.12277
Publisher: MDPI AG
Date: 26-09-2021
DOI: 10.3390/SU131910699
Abstract: This paper introduces a novel topology of the proposed converter that has these merits: (i) the topology of the converter is based on conventional boost and buck-boost converters, which has caused its simplicity (ii) the voltage gain of the converter has provided higher values by the lower value of the duty cycle (iii) due to the use of high-efficiency conventional topologies in its structure, the efficiency of the converter keeps its high value for a great interval of duty cycle (iv) besides the increase of the voltage gain, the current/voltage stresses of the semiconductors have been kept low (v) the continuous input current of this converter reduces the current stress of the capacitor in the input filter. It is worth noting that the proposed converter has been discussed in both ideal and non-ideal modes. Moreover, the operation of the converter has been discussed in both continuous/discontinuous current modes. The advantages of the converter have been compared with recently suggested converters. In addition, the different features of the converter have been discussed for different conditions. In the small-signal analysis, the appropriate compensator has been designed. Finally, the simulation and experimental results have been reported for 90 W output power, 90 V output voltage, 3-times voltage gain, and 100 kHz switching frequency.
Publisher: IEEE
Date: 02-2020
Publisher: MDPI AG
Date: 24-10-2021
DOI: 10.3390/EN14216975
Abstract: This study proposes a novel modified Cuk converter. The proposed converter attempts to resolve the limitations of the conventional converters, such as voltage gain limitations of a canonical Cuk converter. Therefore, the mentioned improvement has made the proposed converters more compatible for renewable energy applications. Moreover, the increase of the voltage gain in the proposed converter has not impacted the efficiency or the voltage stress of the switches, which is common in other voltage boosting techniques, such as cascading methods. Furthermore, the advantages of a Cuk converter, such as continuity of the input current, have been maintained. The average voltage/current stresses of the semiconductor devices and various types of power losses have been calculated and compared with the existing topologies. Moreover, the non-ideal voltage gain of the proposed converters was compared with the other high step-up topologies. Eventually, the simulation results with PLECS, along with the experiments on an 120 W prototype, have been presented for validation.
Publisher: MDPI AG
Date: 13-09-2022
Publisher: IEEE
Date: 02-2020
Publisher: IEEE
Date: 02-2020
Publisher: Institute of Electrical and Electronics Engineers (IEEE)
Date: 2021
Publisher: IEEE
Date: 16-12-2020
Publisher: IEEE
Date: 04-08-2020
Publisher: IEEE
Date: 18-05-2021
Publisher: IEEE
Date: 02-2022
Publisher: IEEE
Date: 23-02-2022
Publisher: IEEE
Date: 02-2022
Publisher: IEEE
Date: 02-2022
No related grants have been discovered for Hossein Gholizadeh.