Industrial Electronics
Hamed Abdi; Naghi Rostami; Ebrahim Babaei; Bulent Bilgehan Bilgehan
Abstract
In solar power plants with energy storage systems (ESSs), a multi-port DC-DC converter (MPDC) equipped with a bidirectional port is more favorable than multiple single-input converters due to its simpler control, higher efficiency, lower cost, and higher power density. This paper proposes a multiport ...
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In solar power plants with energy storage systems (ESSs), a multi-port DC-DC converter (MPDC) equipped with a bidirectional port is more favorable than multiple single-input converters due to its simpler control, higher efficiency, lower cost, and higher power density. This paper proposes a multiport DC-DC converter equipped with a bidirectional port for solar power plants. The proposed converter combines a multi-input cascaded structure with a switched capacitor (SC) cell, a three-winding coupled inductor (3WCI), and a bidirectional port connecting the ESS to the system. Key advantages of this converter include low normalized pick inversed voltage (NPIV) on semiconductors, continuous input current with low ripple, high voltage gain, common ground, high efficiency, and the capability to operate effectively in different operating states. Such performance of the proposed MPDC under various operating states facilitates the implementation of diverse energy management strategies within the grid. The various operating states of the proposed MPDC are analyzed in steady state, and the validation of the mentioned advantages is supported by presenting comparative results with other DC-DC converters. Finally, the results obtained from the analysis of the proposed converter are validated through simulations performed utilizing a co-simulation link between MATLAB and PSCAD/EMTDC software.
Industrial Electronics
Sirous Toofan; Babak Fathipour; Ebrahim Babaei
Abstract
— In this paper, a single switch transformer-less DC-DC converter with continuous input current for photovoltaic applications is proposed. The suggested configuration utilizes a CL1C2D2 structure to achieve a high voltage gain and alleviate voltage pressure on the semiconductor components. This ...
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— In this paper, a single switch transformer-less DC-DC converter with continuous input current for photovoltaic applications is proposed. The suggested configuration utilizes a CL1C2D2 structure to achieve a high voltage gain and alleviate voltage pressure on the semiconductor components. This design enables a significant increase in voltage output with a minimal turns ratio, leading to reduced size, weight, and cost of the converter system. The reduction in turns ratio of the coupled inductor results in lowered voltage stress on the semiconductor elements. Additionally, employing just one power switch in the converter simplifies control and reduces expenses. With its continuous input current, this converter is particularly well-suited for integration in photovoltaic systems. Simulation results conducted using PSCAD/EMTDC software validate the efficacy of the proposed power converter. Furthermore, the maximum power output of the photovoltaic module through an MPPT (Maximum Power Point Tracking) controller under varying irradiance levels is determined, and simulations are executed using PSCAD/EMTDC.
