Author
Pouya Tarassodi
Other affiliations: Babol Noshirvani University of Technology
Bio: Pouya Tarassodi is an academic researcher from Islamic Azad University. The author has contributed to research in topics: Inverter & Voltage. The author has an hindex of 3, co-authored 3 publications receiving 35 citations. Previous affiliations of Pouya Tarassodi include Babol Noshirvani University of Technology.
Topics: Inverter, Voltage, Grid, Photovoltaic system, Energy storage
Papers
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22 Jun 2016TL;DR: In this article, the authors presented the modeling and simulation of hill climbing (HC) maximum power point tracking (MPPT) using novel Single Ended Primary Inductance Converter (SEPIC).
Abstract: This paper present the modeling and simulation of hill climbing (HC) maximum power point tracking (MPPT) using novel Single Ended Primary Inductance Converter (SEPIC). This article firstly introduces a practical model of photovoltaic by which the photovoltaic array's model is obtained. The HC algorithm is used to track the maximum power from the solar panel. The MPP of solar panel varies with irritation and temperature. A dc to dc improved SEPIC converter is used in connection with pv array's for achieving operation in maximum power point and keeping output voltage constant. In this improved converter, two inductors are used for feeding the load by two independent switch. The whole system is simulated using MATLAB/Simulink and simulation results presented.
42 citations
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22 Jun 2016TL;DR: In this paper, a novel inverter with high voltage gain based on asymmetrical Γ-Z-source topology is presented, which employs one diode, one inductor and two capacitors more than the basic structure to obtain higher output voltage with reduced duty ratio.
Abstract: This study presents a novel inverter with high voltage gain based on asymmetrical Γ-Z-source topology. It employs one diode, one inductor and two capacitors more than the basic structure that obtains higher output voltage with reduced duty ratio. So, a reasonable modulation ratio is needed to gain desired boost factor which improves the network power quality. In this structure, unlike other Z-source topologies such as two-stage Quasi Z-source inverter, higher stages are not required for voltage gain boosting, owing to a Γ-shape coupled inductors is used in impedance network. This unique coupled transformer raises voltage gain significantly by lowering turns ratio that reduces the cost, volume and improves the efficiency. Moreover, the two-stage asymmetrical Γ-Z-source inverter is able to operate both in buck and boost mode and its input current is continuous. The proposed inverter is analyzed in steady state and simulation results are presented to verify the performance. As well as, simple boost control is used for simulations.
5 citations
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12 Jun 2019TL;DR: A SPWM cascade full-bridge single-phase 7-level inverter with optimized phase shift modulation is introduced that uses capacitance voltage control and Genetic Algorithm for both symmetrical and asymmetrical conditions to alleviate harmonics and THD.
Abstract: The demand for multi-level inverters has been increased over time. Less total harmonic distortion (THD) of output voltage, less voltage tension across switches, and low electromagnetic interference (EMI) are some of their favourable features. Among all the multi-level topologies, Cascade H-Bridge (CHB) inverters have more scalability, feasibility, and modularity; therefore, they are widely used. CHBs consist of full bridge converters required independent dc voltage sources that may be asymmetrical. In this paper, a SPWM cascade full-bridge single-phase 7-level inverter with optimized phase shift modulation is introduced. It uses capacitance voltage control and Genetic Algorithm for both symmetrical and asymmetrical conditions to alleviate harmonics and THD. MATLAB simulation is used to investigate the inverter performance under different operational conditions. In order to validate the simulation results, an experimental prototype of the inverter is implemented and practical results are presented.
5 citations
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TL;DR: In this article , a power management strategy to control a multiport converter as an interface among a three-phase power grid, a renewable energy source (RES), and two energy storage resources (ESRs) is presented.
Abstract: This paper presents a power management strategy to control a multiport converter as an interface among a three‐phase power grid, a renewable energy source (RES), and two energy storage resources (ESRs). The ESRs include electric energy storage (EES) and electric vehicle (EV). With the expansion of the use of EVs, batteries from EVs can be used as energy storage and support the integrated RES‐based electricity systems. EES and EV differ in availability, capacity, and charge/discharge rates. The multiport converter has a simple structure and reduced number of elements that allows simultaneous and independent use of resources. Two bidirectional DC ports enable two‐way power flow for ESRs. A two‐level power management system (TLPMS) is presented to deal with controlling battery charging, Vehicle‐to‐Grid (V2G) operation, and RES and power grid utilization. This way, TLPMS changes the case studies (CSs) based on the availability of EV and photovoltaic (PV) as well as batteries' state‐of‐charge (SOC). The performance of the proposed TLPMS has been evaluated by simulation results and experimental tests. The results show the fast and robust performance of the proposed TLPMS. So that the current on the power grid side, under consecutive changes in the CSs, achieves a steady state during a cycle (20 ms). Also, the speed of DC sources in achieving their reference values is high, which indicates the outstanding features of the proposed system.
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TL;DR: In this paper , an energy management system (EMS) is proposed for a multi-port converter as an integrated PV/BES/EV energy system, taking into account the EV mileage, BES dis/charge cycles and financial benefits.
Abstract: Integrated energy systems, including renewable energy sources (RES) and battery energy storage (BES), have high potentialities to deal with issues caused by the high penetration of electric vehicles (EVs) in power systems. The full realization of the benefits of such systems depends on implementation of an energy management system (EMS) in order to monitor power sharing between different components of the system. In this paper, an EMS is proposed for a multi-port converter as an integrated PV/BES/EV energy system. It takes into account the EV mileage, BES dis/charge cycles and financial benefits, and schedule for the optimal dis/charge of batteries, and also involves EVs in V2X programs. In this approach, the potential of EVs as a portable energy storage can be employed in providing ancillary services to the power grid. The obvious advantages of the proposed EMS performance have been specified by simulation and comparison with the benchmark method. According to the obtained results, for a specific period of time, a better interaction has been established between the average achievement of the final SOC and the financial profit of the integrated energy system under the proposed EMS. According to the proposed method, for a 10% reduction in the final SOC compared to the benchmark method, the minimum financial benefit is about 0.2607 pounds (received from the grid), equivalent to 0.2082 pounds (paid to the grid) in the benchmark method.
Cited by
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TL;DR: Two new Maximum Power Point Tracking methods which improve the conventional Fractional Open Circuit Voltage method are proposed and it is shown that both methods can accurately estimate the maximum power point voltage, and hence improve the system efficiency.
Abstract: This paper proposes two new Maximum Power Point Tracking (MPPT) methods which improve the conventional Fractional Open Circuit Voltage (FOCV) method. The main novelty is a switched semi-pilot cell that is used for measuring the open-circuit voltage. In the first method this voltage is measured on the semi-pilot cell located at the edge of PV panel. During the measurement the semi-pilot cell is disconnected from the panel by a pair of transistors, and bypassed by a diode. In the second Semi-Pilot Panel method the open circuit voltage is measured on a pilot panel in a large PV system. The proposed methods are validated using simulations and experiments. It is shown that both methods can accurately estimate the maximum power point voltage, and hence improve the system efficiency.
75 citations
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TL;DR: The presented MPPT scheme tuned using the proposed novel tuning routine is compared with conventional direct and indirect fuzzy-based MPPT schemes, showing superiority of the proposed MPPT routine over conventional schemes.
Abstract: In this paper, after defining Maximum Power Point Tracking (MPPT) control expectations, with the aim of finding the optimum routine in fulfilling these expectations, a review over the available MPPT control methods is presented. Throughout the review, by comparing conventional MPPT routines in terms of accomplishing defined control objectives, the necessity of designing a new MPPT control scheme based on adaptive fuzzy logic is expressed. Based on the conducted review, a new routine to optimize the MPPT performance of a Photovoltaic (PV)-setup and to fulfill all the MPPT control requirements is proposed. The optimization is performed in tracking the Maximum Power Point (MPP) of the PV-module by a Boost-converter using an “antecedent-consequent adaptive” indirect fuzzy-based MPPT scheme. The fuzzy-based scheme is tuned online using a novel computationally light membership function tuning routine, where the antecedent and consequent membership functions are tuned synchronously. As a result, a fast, smooth and computationally light MPPT controller is proposed. In this regard, the presented MPPT scheme tuned using the proposed novel tuning routine is compared with conventional direct and indirect fuzzy-based MPPT schemes, showing superiority of the proposed MPPT routine over conventional schemes.
72 citations
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TL;DR: A robust MPPT technique using second order sliding mode control strategy is presented and a comparison with classical first order slide mode controller proves that the second order gives fast response and less chattering.
71 citations
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TL;DR: This paper reviews the recent development of grid-connected PV (GPV) generation systems comprising of several sub-components such as PV modules, DC-DC converter, maximum power point tracking (MPPT) technique, and an inverter.
Abstract: Renewable energy (RE) has become a focal point of interest as an alternative source of energy to the traditional fossil fuel and other energy sources due to the fact that it is more environmentally friendly, abundant and economically feasible. Many countries aggressively promote feed-in tariff schemes and solar photovoltaic (PV) systems have become one of the fastest growing RE sources that can be integrated into the grid distribution network. This paper reviews the recent development of grid-connected PV (GPV) generation systems comprising of several sub-components such as PV modules, DC-DC converter, maximum power point tracking (MPPT) technique, and an inverter. In addition, various grid synchronization and islanding detection methods are elaborated. The future key challenges to build a smart and efficient GPV generation system were also presented.
45 citations
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01 Sep 2018TL;DR: A photovoltaic panel, wind system with PM synchronous generator and a battery energy system used for the micro grid development and FFT based harmonic analysis performed in MATLAB environment in order to maintain the power quality level of the hybrid energy based grid integration system.
Abstract: Now a days crucial importance are given to the renewable energy sources like wind energy, solar energy, biomass etc. as these sources are considered as eco-friendly and does less damage to the environment. In our study, a photovoltaic panel, wind system with PM synchronous generator and a battery energy system used for the micro grid development. In this methodology we are using two renewable energy sources i.e. wind power and solar power. These subsystems integrated to form a hybrid system. A battery storage system also used in conjunction with the grid system to provide extra support power to the generation unit. A battery energy system coupled using DC-to-DC based converter and then further integrated into the utility grid system using DC-to-AC inverter. To obtain the maximum power, Hill climbing based MPPT algorithm applied to the hybrid system. After that, simulation model and the result will be discuss. Then FFT based harmonic analysis performed in MATLAB environment, In order to maintain the power quality level of the hybrid energy based grid integration system.
24 citations