Article
Green & Sustainable Science & Technology
Muhammad Ahsan Ayub, Saddam Aziz, Yitao Liu, Jianchun Peng, Jian Yin
Summary: This article proposes a single-phase five-level voltage inverter topology with six switches for renewable energy applications. The suggested inverter reduces switching and conduction losses with its low switch count and uses a multi-error feedback controller with modified sinusoidal pulse width modulation to maintain the output voltage within the desired range. The absence of clamping diodes and bulky capacitors enables the use of a simple model predictive controller, decreasing circuit cost and improving overall efficiency. Simulation and hardware results are provided to validate the originality of the study.
Article
Multidisciplinary Sciences
Debswarup Rath, Sanjeeb Kar, Akshaya Kumar Patra
Summary: Solar electric systems generate power during the day, but nonlinearities in the system can lead to current and voltage distortions, affecting power output. The proposed system uses Insulated Gate Bipolar Junction Transistor switches and modulation techniques to reduce harmonics and improve system performance.
ARABIAN JOURNAL FOR SCIENCE AND ENGINEERING
(2021)
Article
Engineering, Electrical & Electronic
Mengyu Li, Ryuji Iijima, Tomoyuki Mannen, Takanori Isobe, Hiroshi Tadano
Summary: A new modulation method based on space-vector modulation for Z-source inverters is proposed in this article. The proposed modulation, based on ZSVM6, reduces the current ripple in the inductor by introducing additional shoot-through intervals. Experimental results confirm that the proposed modulation can reduce the inductor volume without increasing power loss.
IEEE TRANSACTIONS ON POWER ELECTRONICS
(2022)
Article
Engineering, Electrical & Electronic
Moufek Khelifi, Omar Benzineb, El Madjid Berkouk, Asma Behlouli, Fares Baatouche
Summary: This article proposes a new control strategy based on improved discontinuous space vector modulation, aiming to enhance the performance of a three-phase Z-source inverter. The strategy extends the modulation index range, maximizes the voltage gain, reduces voltage stress and inductance current ripple, thereby improving efficiency and reducing the cost and size of the inverter. Simulation and experimental validation demonstrate the advantages of the proposed strategy, including improved output voltage signal quality, high efficiency, extended modulation index range, high voltage gain, low voltage stress, reduced inductance current ripple, and low shoot-through current for the Z-source network.
IEEE JOURNAL OF EMERGING AND SELECTED TOPICS IN POWER ELECTRONICS
(2022)
Article
Energy & Fuels
Maher G. M. Abdolrasol, M. A. Hannan, S. M. Suhail Hussain, Taha Selim Ustun
Summary: This paper presents an inverter controller utilizing Sinusoidal Pulse Width Modulation (SPWM) to control the modulation index of a three-phase off-grid system. The controller's performance is improved using Particle Swarm Optimization (PSO) algorithm to automatically adjust its parameters and reduce the error in the Proportional Integral (PI) controller. The simulation results demonstrate that the modulation index controller reduces the Total Harmonic Distortion (THD) after optimizing the PI controller parameters, indicating its effectiveness and robustness.
Article
Automation & Control Systems
Tuofei Chen, Lei Gu, William J. Dally, Juan Rivas-Davila, John Fox
Summary: In this article, a novel three-phase multilevel inverter (MLI) design is presented for photovoltaic applications. This design eliminates the need for large dc-link capacitors to buffer the 120-Hz power ripple and allows individual inverter modules to process trapezoidal power. The trapezoidal operation significantly improves the system's efficiency by enabling the inverter modules to output peak or zero power for most of the ac cycle. Experimental results show that the proposed design achieves a high efficiency of over 95%, outperforming the conventional MLI design by reducing losses by more than 20% at light load conditions.
IEEE TRANSACTIONS ON INDUSTRIAL ELECTRONICS
(2023)
Article
Computer Science, Information Systems
Jaber Merrikhi Ahangarkolaei, Mahdi Izadi, Tohid Nouri
Summary: A robust nonlinear sliding mode controller based on the power curve of a PV (SMC-PCPV) was proposed in this paper to achieve maximum power point tracking (MPPT) for photovoltaic (PV) cells. The controller showed effectiveness and robustness in computer simulations and laboratory prototypes, successfully resisting changes in environmental conditions and obtaining the maximum power from the PV panel.
Article
Automation & Control Systems
Hai Tao, Mehrdad Ghahremani, Faraedoon Waly Ahmed, Wang Jing, Muhammad Shahzad Nazir, Kentaro Ohshima
Summary: The characteristic curve of Photovoltaic (PV) modules is nonlinear, but there is a point in the nonlinear curve of the solar system where the maximum power can be extracted. Improving Maximum Power Point Tracking (MPPT) methods is crucial in increasing output power production of solar systems. The adaptive neural-fuzzy inference system (ANFIS) is considered one of the best methods for finding the maximum power point in solar systems due to its fast response and low fluctuations.
CONTROL ENGINEERING PRACTICE
(2021)
Article
Energy & Fuels
Hamed Mashinchi Maheri, Dmitri Vinnikov, Mohsen Hasan Babayi Nozadian, Elias Shokati Asl, Ebrahim Babaei, Andrii Chub
Summary: This paper proposes an embedded half-bridge Z-source inverter based on gamma structure, which can generate zero voltage levels in output, has high voltage gain, and low voltage stress on capacitors. By changing the shoot-through duty cycle and turns ratio of the transformer, the boost factor in the proposed structure is increased.
Article
Energy & Fuels
Lluis Monjo, Luis Sainz, Juan Jose Mesas, Joaquin Pedra
Summary: Photovoltaic (PV) power systems are increasingly popular as renewable energy sources, with quasi-Z-source inverters (qZSI) showing high potential for integration into AC networks. Concerns about stability in PV systems are growing, with converters impacting grid-connected systems. This paper presents a model for studying qZSI-PV system dynamics and stability, offering solutions to mitigate instabilities and verifying stability through PSCAD simulations.
Article
Energy & Fuels
Ivan Grgic, Dinko Vukadinovic, Mateo Basic, Matija Bubalo
Summary: The quasi-Z-source inverter uses the zero-sync method for STS injection, reducing the number of switchings and improving efficiency. Implementing this method can increase the efficiency of the inverter by up to 4% and successfully eliminate unintended STS caused by non-ideal switching dynamics.
Article
Automation & Control Systems
Hafiz Furqan Ahmed, Mohamed Shawky El Moursi, Khalifa Al Hosani, Omar Alzaabi, Bashar Zahawi
Summary: In this article, an improved high-boost-gain split-source inverter (SSI) is proposed for renewable energy generation, which has higher boost ability, no short-circuit issue, and eliminates leakage ground currents.
IEEE TRANSACTIONS ON INDUSTRIAL INFORMATICS
(2023)
Article
Energy & Fuels
Antoine Musengimana, Haoyu Li, Xuemei Zheng, Yanxue Yu
Summary: This paper presents a robust MIMO control scheme for a PV inverter connected to a weak grid, considering the dynamics of PLL and coupling effects between PCC voltage and active power, while eliminating sensitivity to PLL. Through simulations and real-time simulations, the proposed method demonstrates stable robustness in different grid conditions.
Article
Automation & Control Systems
Zhilei Yao, Yubo Zhang
Summary: A doubly grounded transformerless PV grid-connected inverter is proposed to address the shoot-through issue and common mode leakage current problem in conventional inverters. By operating at positive and negative half-line cycles and shorting the grounds of the PV array and the grid, this inverter eliminates these issues and improves efficiency. Simulation and experimental results validate the theoretical analysis of the proposed inverter.
IEEE TRANSACTIONS ON INDUSTRIAL ELECTRONICS
(2021)
Article
Multidisciplinary Sciences
Abdelouahad May, Fateh Krim, Hamza Feroura, Abdesslam Belaout
Summary: This paper presents a two-stage grid-tied PV design based on a high-gain DC-DC converter and a 7-level PUC inverter controlled by FCS-MPC. The proposed design includes a novel model for controlling the DC-link voltage considering system losses. Simulation and experimental results demonstrate the effectiveness of the proposed control strategy in terms of power quality, response time, and accuracy, under various weather conditions.
ARABIAN JOURNAL FOR SCIENCE AND ENGINEERING
(2023)
Article
Automation & Control Systems
Gajendra Singh Chawda, Abdul Gafoor Shaik, Om Prakash Mahela, Sanjeevikumar Padmanaban
Summary: This article proposes a method to improve the power quality (PQ) in weak grids with wind energy (WE) penetration using additional distribution static compensator (DSTATCOM). The method utilizes fuzzy logic (FL) controller and feedforward block of the WE source to adapt to changes associated with wind speed and estimate switching signals for DSTATCOM. MATLAB simulation and experimental studies demonstrate the effectiveness of the proposed method in enhancing PQ performance of weak grid-connected WE sources in the presence of nonlinear loads.
IEEE TRANSACTIONS ON INDUSTRIAL ELECTRONICS
(2023)
Article
Engineering, Multidisciplinary
Omar Alibrahim, Sanjeevikumar Padmanaban, Murad Khan, Omar Khattab, Basil Alothman, Chibli Joumaa
Summary: Wireless sensor networks are used extensively for detecting and controlling activities in smart homes. The proposed solution utilizes a DLSTM model to activate the sensors based on upcoming activities, and applies transfer learning to reduce training time. Preprocessing and feature mapping steps are employed to facilitate efficient transfer. To handle unusual activities, a reinforcement learning model is used in the target domain, while guard sensors are appointed among idle sensors for real-time detection. The proposed scheme achieves an accuracy of 96.1% and outperforms other schemes in energy consumption and network lifetime.
IEEE TRANSACTIONS ON INDUSTRY APPLICATIONS
(2023)
Article
Green & Sustainable Science & Technology
Neeraj Priyadarshi, Pandav Kiran Maroti, Farooque Azam, Mohamed G. Hussien
Summary: This research presents an improved Z-source inverter-based sensorless field-oriented control and integral sliding mode controller controlled induction motor-driven photovoltaic water pumping system. The Z-source inverter acts as a DC-link boost power component with better buck-boost behavior, smaller size, fewer harmonics, reduced in-rush currents, unity power factor, no input/output filters requirements, and improved efficacy. The proposed takagi-sugeno fuzzy-based maximum power point tracking provides a dynamic model of piecewise linearization of non-linear behavior. The proposed ISMC gives smooth regulation under varying motor variables, and the practical responses justify the effectiveness of the proposed sensorless submersible induction motor-based PV water pumping design.
IET RENEWABLE POWER GENERATION
(2023)
Article
Computer Science, Information Systems
Aazim Rasool, Shah Fahad, Xiangwu Yan, Haaris Rasool, Mohsin Jamil, Sanjeevikumar Padmanaban
Summary: This article proposes a virtual variable impedance (VVI) based virtual synchronous generator (VSG) control technique to improve reactive power sharing and voltage accuracy in a low-inertia microgrid. The VVI control estimates the value of variable virtual impedance by establishing an exponential relationship with the inverter's output reactive power, and a reactive power communication method is introduced to identify the proportion of reactive power share. The effectiveness of the proposed control is analyzed through stability analysis and the results show significant improvement compared to conventional methods.
IEEE SYSTEMS JOURNAL
(2023)
Article
Green & Sustainable Science & Technology
Pawan Kumar Pathak, Anil Kumar Yadav, Sanjeevi Kumar, Bhekisipho Twala, Innocent Kamwa
Summary: This paper proposes an intelligent battery charging scheme for hybrid electric vehicles (HEVs) using a fuel cell as the main power source and solar photovoltaic (PV) and battery as auxiliary power sources. The scheme includes a minimized oscillation-based improved perturb and observe (I-P&O) maximum power point tracking (MPPT) scheme for the PV, as well as cascaded DC-DC boost and buck power converters. The proposed MPPT scheme achieves a tracking efficiency of 99.80% for the considered PV array.
IET RENEWABLE POWER GENERATION
(2023)
Article
Green & Sustainable Science & Technology
Neeraj Priyadarshi, Pandav Kiran Maroti, Baseem Khan
Summary: This research introduces an adaptive grid integrated photovoltaic (PV) system with a maximum power point tracker (MPPT) based on a perturb adaptive T-S fuzzy approach-based sliding mode controller (SMC) (T-S fuzzy SMC). The proposed PV tracking system utilizes a grid-connected single-phase H-bridge microinverter controlled by sine pulse width modulation (SPWM). Compared to other recent MPPT algorithms, the proposed variable step sliding mode controller-based MPPT demonstrates higher PV tracking efficiency, stronger adaptive capability, higher precision, simpler hardware implementation, better transient performance, and faster convergence velocity under discontinuous non-linear operating conditions. The MPPT based on the Takagi-Sugeno (T-S)-based perturb adaptive sliding mode controller generates adaptive perturbation and shows high-performance efficiency under changing solar irradiance levels compared to the Mamdani approach. The proposed inverter controller improves power quality performance by minimizing total harmonic distortion (THD) with the use of SPWM technique.
IET RENEWABLE POWER GENERATION
(2023)
Article
Engineering, Electrical & Electronic
C. Dhanamjayulu, P. Sanjeevikumar, Devalraju Prasad, Shaik Reddi Khasim, Frede Blaabjerg
Summary: This paper presents a novel single-phase 29-level asymmetrical switched-diode multilevel inverter (MLI) topology with a reduced number of components. The developed topology can generate a maximum of 29 levels of output voltage using unequal DC sources. The proposed topology reduces circuit components, size, and cost while maintaining reliability and accuracy, making it a cost-effective alternative to existing topologies.
IETE JOURNAL OF RESEARCH
(2023)
Review
Engineering, Electrical & Electronic
S. Kodeeswaran, M. Nandhini Gayathri, P. Sanjeevikumar, Rafael Pena-Alzola
Summary: This article reviews the different inductive and capacitive wireless charging systems for achieving high-power infrastructures. It highlights the characteristics of safety standards, such as SAE, ICINRP, and IEEE, for wireless charging technology. The working of compensation circuits, resonant converters, and challenges in wireless power transfer systems are discussed. It also explores the mechanism and design of compensation circuits in electric vehicle batteries, as well as foreign object detection methods to prevent power variations. This review is significant for identifying and developing cost-effective charging infrastructure for electric vehicles.
IETE JOURNAL OF RESEARCH
(2023)
Article
Engineering, Electrical & Electronic
Shivam Kumar Yadav, Nidhi Mishra, Bhim Singh, P. Sanjeevikumar, Frede Blaabjerg, Massimo Mitolo
Summary: A new multiobjective minimal-drift maximum power point tracking (MOMD-MPPT) technique is proposed for extracting maximum power from a single photovoltaic (PV) array connected to a multilevel converter (MLC). The technique addresses the voltage drift issue commonly associated with conventional MPPT techniques by using a new multiobjective solution. The technique utilizes a new swarm optimization algorithm (NSOA) that combines swarm intelligence and pressure gradient force to achieve minimal drift in the solar MLC. Comparative analysis with well-known MPPT algorithms and experimental validation demonstrate the effectiveness of the proposed MOMD-MPPT technique in improving the system performance in dynamic solar conditions.
IEEE JOURNAL OF EMERGING AND SELECTED TOPICS IN POWER ELECTRONICS
(2023)
Review
Computer Science, Information Systems
Chinna Alluraiah Nallolla, P. Vijayapriya, Dhanamjayulu Chittathuru, Sanjeevikumar Padmanaban
Summary: Optimization methods were proposed to address the intermittent nature of renewable energy sources in a hybrid microgrid system. The system included a combination of solar photovoltaic, wind turbine, battery storage, converter, and diesel generator. Multi-objective optimization algorithms were utilized to determine the optimal design considering factors such as energy cost, net present cost, operating cost, carbon emissions, and renewable fraction. Several evolutionary algorithms, such as grey wolf optimizer and particle swarm optimization, were employed for sizing optimization.
Article
Computer Science, Hardware & Architecture
Hamid Ghobadi Lamouki, Hassan Shokouhandeh, Mehrdad Ahmadi Kamarposhti, Fariba Asghari Matankolaei, Sanjeevikumar Padmanaban, Sun-Kyoung Kang, Ilhami Colak
Summary: This paper proposes a dynamic parameters lightning search algorithm for optimal operation management of EV parking lots and DGs in a microgrid. Simulations show that the algorithm outperforms the PSO algorithm in reducing the microgrid operation cost.
JOURNAL OF CIRCUITS SYSTEMS AND COMPUTERS
(2023)
Review
Computer Science, Information Systems
Pawan Kumar Pathak, Debasmita Ghosh Roy, Anil Kumar Yadav, Sanjeevikumar Padmanaban, Frede Blaabjerg, Baseem Khan
Summary: One critical emerging branch of solar technology is photovoltaic/thermal (PV/T) systems, which combine solar collectors and solar photovoltaic panels into a unit to produce heat and electricity. The conversion efficiency (η) of solar panels is reduced due to the elevated temperature of solar cells, but PV/T systems aim to minimize the temperature and enhance electricity production. This study reviews cooling media, such as air, fluids, and phase change materials, for PV/T systems and provides recommendations for future implementations.
Article
Engineering, Multidisciplinary
Monireh Ahmadi, Samaneh Rastgoo, Zahra Mahdavi, Morteza Azimi Nasab, Mohammad Zand, Padmanaban Sanjeevikumar, Baseem Khan
Summary: This paper studies the optimal allocation problem of Electric Vehicles Parking Lots and Distributed Generation in micro-grid, considering technical and economic factors for a realistic solution. The impact of FACTS devices on the network's technical and economic parameters is investigated, along with optimizing the charging and discharging of storage devices and injective power for better energy management. A two-stage optimization method is used to design the optimal number of distributed renewable energy, storage, FACTS equipment, and parking lots with different numbers of electric vehicles. The simulation on the standard IEEE 33 bus demonstrates the improvement of network's technical parameters through determining the optimal power factor of parking lots during vehicle unloading.
JOURNAL OF ENGINEERING-JOE
(2023)
Article
Energy & Fuels
G. V. Brahmendra Kumar, K. Palanisamy, P. Sanjeevikumar, S. M. Muyeen
Summary: Cloud changes can lead to irradiation variations, causing power fluctuations in large PV plants. Energy storage systems (ESSs) with control algorithms are commonly used to mitigate power fluctuations. However, there is a lack of performance comparisons among different methods, especially in battery status and operation with various smoothing methods. This study analyzes ramp-rate and step-rate control methods for smoothing solar PV fluctuations in a DC microgrid environment, using a combined battery-super capacitor coordinated system to improve performance.
Article
Engineering, Multidisciplinary
Mohammad Zand, Morteza Azimi Nasab, Hamid Reza Hanif, Muhammad Reza Ghahri, Sanjeevikumar Padmanaban, Baseem Khan
Summary: This paper presents a method to improve the performance of the DC-DC converter used in photovoltaic systems by using a combined design of forward and fly-back. By improving the converter's structure and using the overlay and triple induction technique, higher efficiency and more stable voltage output are achieved.
JOURNAL OF ENGINEERING-JOE
(2023)
