List of Articles Mohammad Rouhollah Yazdani

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  1 - Providing a Dual-Input Soft-Switching Boost Converter with Power Factor Correction Capability
  Mohammad Reza Amini Mohammad Foroughi Ehsan Adib Mohammad Rouhollah Yazdani
  10.30486/teeges.2022.1965800.1030
  Multi-input converters have different structures. These converters can be used in applications of power systems based on wind, photovoltaic, hybrid vehicles, etc. In a multi-input system, usually one of the inputs is connected to an AC source. Also, these converters use More

  Multi-input converters have different structures. These converters can be used in applications of power systems based on wind, photovoltaic, hybrid vehicles, etc. In a multi-input system, usually one of the inputs is connected to an AC source. Also, these converters use soft switching techniques to increase efficiency. In this paper, a non-insulated dual input soft-switching boost converter with power factor correction capability is proposed. This converter uses only an auxiliary circuit with simple operation. The operation modes of the proposed converter are described. All of the semiconductor elements in this converter turn on and off in soft switching conditions. The proposed controller circuit is presented with power factor correction capability. The converter is simulated with PSIM and THD and PF shows that the power factor correction in AC input is occurred correctly. The efficiency of the proposed converter is increased in comparison with the multi-input hard switching converter under the same conditions. The simulation results with PSpice for a 200-watt prototype converter confirm the theoretical analysis. Manuscript profile
• Open Access Article
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  2 - High Step-Up Cascaded Boost Converter with Coupled Inductor and Lossless Passive Snubber
  Zainab Abdul Ameer AL-Dabbagh Mohammad Rouhollah Yazdani Fadhil Abbas Hassan H. Al-Ashaa
  10.30486/teeges.2023.1977872.1060
  An effective high-step-up DC-DC converter is an important section of renewable energy systems. Cascaded boost converters provide more voltage gain than single boost converters, but they are still unsuitable for high step-up voltage conversion due to gain and hard switch More

  An effective high-step-up DC-DC converter is an important section of renewable energy systems. Cascaded boost converters provide more voltage gain than single boost converters, but they are still unsuitable for high step-up voltage conversion due to gain and hard switching conditions. To improve the voltage, gain of the cascaded boost converter, a coupled inductor can be used but the leakage inductance causes a voltage. To overcome these problems, a high step-up converter is proposed in which a cascaded structure, coupled inductor, and a lossless passive snubber are utilized together. The proposed converter has zero current and zero voltage switching conditions at turn-on and off instants. First, the proposed converter is theoretically analyzed, and then its design and simulation in OrCAD software are presented.  Furthermore, the experimental results of the prototype verify soft switching conditions and high step-up gain. Manuscript profile