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Demonstrating the benefits of thermoelectric‐coupled solar PV system in microgrid challenging conventional integration issues of renewable resources
摘要： Incorporation of solar photovoltaic (SPV) and thermoelectric (TE), termed as solar photovoltaic‐thermoelectric (SPV‐TE) hybrid system, is found be a very promising technique in widening the utilization of solar spectrum and improving the power yield viably cum‐proficiently. This hybrid architecture caters thermal energy, which signifies upon electrical energy with additional harnessing of solar insolation in an exceptional way. The implementation of the aforementioned system in microgrid (MG) leads to procurement of higher active power and comparably lesser reactive power to the system. Many non-conventional energy sources have been implemented for power generation in MG in spite of their instability and reconciliation issues. This article portrays upon the main concern of implementing only SPV‐TE system in MG by considering two systems to analyze and compare. Those two systems, ie, SPV‐wind energy system (SPV‐WES)/fuel cell technology (FCT) and SPV‐thermoelectric generator (SPV‐TEG)‐WES/FCT, were analyzed and validated over the employment of only the SPV‐TEG system. For WES and FCT, the proposed system delivers higher active power near about 20% to 70% over the conventional MG and the TEG‐integrated MG; 21% to 52% lesser reactive power is absorbed over the conventional MG and 7% to 17% higher reactive power is absorbed over the TEG‐integrated MG. This, thus, brings about the lesser multifaceted nature in source incorporation and moderating the cons of coordinating WES and FCT, considering all its application. The proposed replaceable SPV‐TEG framework in MG is observed to exceed expectations over the two frameworks offering ascend to a noteworthy leap forward in advancement of SPV. The whole system was studied, analyzed, and validated in MATLAB/Simulink environment.
关键词： active power,progress in solar photovoltaics,reactive power,SPV‐TEG hybrid system,thermoelectric system,solar photovoltaics,renewable resources,microgrid
更新于2025-09-12 10:27:22
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Establishment and analysis of micro-net model considering the enhancement of photovoltaic power utilization for air-source heat pump
摘要： Since the stability of the power grid and the quality of electricity supply can be affected, the intermittent and unpredictable features make the renewable energy generation cannot be absorbed by the power grid easily and completely. “Abandoning the wind and solar power” phenomenon also becomes more serious in recent years. As an efficient thermoelectric conversion device, the heat pump system can couple thermal energy and electricity to eliminate excess electricity of the system theoretically. However, the influence of the heat pump technology on the microgrid system which needs to be analysed case by case lacks a unified evaluation method. Therefore, based on the Energy PLAN, an energy microgrid model of an ecological region in Qingdao is established to study the impact on the renewable energy integration and the enhancement of renewable energy utilization through applying the air-source heat pump system. The simulation results showed that the maximum photovoltaic penetration rate in the region is 19.23% initially. After applying the air-source heat pump, the photovoltaic capacity corresponding to the critical point of 100% renewable energy utilization is in direct proportion to the heat pump capacity. Additionally, the maximum photovoltaic penetrations can reach 25%. In this paper, we also propose relevant suggestions for the designing and building of the micro-net energy system.
关键词： photovoltaic power,air-source heat pump,Energy PLAN,microgrid,renewable energy
更新于2025-09-12 10:27:22
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[IEEE 2019 IEEE PES Innovative Smart Grid Technologies Conference - Latin America (ISGT Latin America) - Gramado, Brazil (2019.9.15-2019.9.18)] 2019 IEEE PES Innovative Smart Grid Technologies Conference - Latin America (ISGT Latin America) - Photovoltaic system simulation model for steady-state microgrid energy management application
摘要： The high penetration of Distributed Energy Resources (DERs) creates the necessity of having mathematic models that can accurately represent the variable and intermittent nature of its resources, which are normally based on renewable energy such as photovoltaic systems. Since the DERs are located near the consumer, at the distribution side of the network, it creates a challenge in the operation and control of the distribution system. This challenge can be addressed by microgrids, which are the new paradigm for defining the operation of the distribution system with high penetration of DERs. This paper presents a photovoltaic simulation model which can analyze the photovoltaic system response to particular weather condition. The model can be applied in a steady-state microgrid energy management system. The model was simulated, and the results were analyzed. Different cases were applied, and the results were high satisfactory in comparison with the ones presented in the literature.
关键词： steady state,energy management,Photovoltaic system,mathematic model,microgrid
更新于2025-09-11 14:15:04
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[IEEE 2018 5th International Conference on Information, Cybernetics, and Computational Social Systems (ICCSS) - Hangzhou (2018.8.16-2018.8.19)] 2018 5th International Conference on Information, Cybernetics, and Computational Social Systems (ICCSS) - RBF Neural Network Adaptive PID Control for Energy Storage System in Grid-Connected Photovoltaic Microgrid
摘要： In photovoltaic microgrid, the output power of PV array will change with the change of external light and temperature. In order to maintain the stability of output power of PV system, energy storage system is usually added into the system. In a energy storage system, the most widely used control method is proportional-integral-derivative (PID) based control, however, the control effect of PID control is dependent on parameter tuning. In this paper, a PID controller based on adaptive radial basis function (RBF) neural network is proposed to adjust the PID parameters adaptively, and improve the response speed, anti-interference ability and robustness of the traditional PID controller. In the end, the energy storage system is built in the MATLAB/Simulink software, which is applied to the 100kW photovoltaic array to stabilize the output power when the light and temperature changed.
关键词： adaptive control,energy storage system,photovoltaic microgrid,RBF neural network,PID control
更新于2025-09-11 14:15:04
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[IEEE 2017 14th IEEE India Council International Conference (INDICON) - Roorkee, India (2017.12.15-2017.12.17)] 2017 14th IEEE India Council International Conference (INDICON) - Power Management In Solar PV Fed Microgrid System With Battery Support
摘要： Installation of renewable resources at single phase residential premises calls on for the need of power management and coordination control of operating system. System is divided components which includes, solar PV maximum power point tracking (MPPT) via boost converter, bi-directional DC-DC converter for battery charging applications, and bidirectional AC-DC converter for feeding AC loads, etc.,. This paper, the solar PV alongside with battery power elaborates management scenario so as to form a sophisticated residential consumer system capable of operating in both grid forming (or, islanded) and feeding (or, grid connected) modes. System is tested via PSCAD based simulation platform, for operation in varying operating modes such that the power could be fed from DC to AC microgrid and vice-versa. DC-AC converter operating in closed loop sine pulse width modulation (SPWM) scheme, is used to control AC side voltage while operating in islanded mode. It works in rectification mode during grid connected mode. In day time, system is in islanded mode where excess / deficit power is exchanged with energy storage unit (ESU). In evening or night time, it operates in grid connected mode so as to charge the ESU.
关键词： Converter control,power management,grid forming,energy storage unit,microgrid,grid feeding
更新于2025-09-11 14:15:04
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Robust 3IMPL Control Algorithm For Power Management of SyRG/PV/BES Based Distributed Islanded Microgrid
摘要： In an islanded AC microgrid, a comprehensive algorithm of three phase, improved magnitude, phase locked loop (3IMPL) control algorithm is developed to provide DC off set removal, steady state error removal and fast dynamic response. In addition, the control of the voltage source converter (VSC) using 3IMPL algorithm, provides voltage and frequency control and elimination of harmonics of nonlinear loads. In proposed microgrid, a solar PV array is connected to the DC link through a boost converter and an INC (Incremental Conductance) technique is used for extraction of maximum power from a PV array. Due to intermittency of PV array, a synchronous reluctance generator (SyRG) is used for pico-hydro generation because it is economical, ecologically sustainable, requires less maintenance and extremely reliable. Moreover, a microgrid suffers from problems of variation in generation and continuous load fluctuations, therefore for power balancing between the source and the load, a storage battery is connected across the DC link of VSC through a bidirectional DC-DC converter. Test results on a prototype have verified the control strategy and it is able to improve the power quality of the system at varying solar insolation and unbalance in loads.
关键词： SyRG (Synchronous Reluctance Generator),Bidirectional Converter,PV (Photovoltaic),Microgrid,Power Quality,Pico-Hydro Generation
更新于2025-09-10 09:29:36
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Multi-Party Energy Management and Economics of Integrated Energy Microgrid with PV/T and CHP system
摘要： Focusing on electricity and thermal energy requirement of contemporary buildings, a joint operation of photovoltaic thermal (PV/T) based prosumers and a Microturbine based combined heat and power (CHP) system has been presented to analyse the economics of grid-connected microgrid (MG) system. Bidirectional flow of electricity and heat model is considered and is optimally managed using price-based demand response (DR) scheme. Thermal storage is exploited to ward off the substantial amount of heat wastages that enhance the system's reliability during any disruption of microturbine. The objective functions of both prosumer and microgrid operator (MGO) are formulated as a profit maximization problem where they interact with each other on the basis of DR activity. To establish this strategic decision-making process, the system is modelled as a Stackelberg Equilibrium (SE) game, where MGO acts as a leader while PV/T prosumers act as a follower. The interaction or contribution of two players in a game is a problem of non-linear optimization which is solved by Differential Evolution (DE) algorithm. In the end, in a case study, it has been proved that the results are quite lucrative for the proposed model.
关键词： photovoltaic thermal (PV/T),Differential Evolution (DE),demand response (DR),Stackelberg Equilibrium (SE),microgrid (MG),combined heat and power (CHP)
更新于2025-09-10 09:29:36
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Optimal Operation of PV-DG-battery based Microgrid with Power Quality Conditioner
摘要： This paper presents an optimal control operation of a photovoltaic (PV)-battery based standalone microgrid, feeding nonlinear loads. To ensure continuous power supply to the critical loads during low insolation or low battery state of charge (SOC), a diesel generator (DG) is used as an auxiliary generator. This cost effective hybrid system with maximum utilization of the renewable as well as fossil fuel based generators, can be employed in hospitals, telecom stations in remote areas. In order to nullify the effect of nonlinear loads on the DG, modified enhanced phase locked loop (EPLL) based power quality conditioner is used. The characteristic equation of conventional EPLL is amplitude dependent, thus, the controller tuning parameters need to be modified if input signal varies over a large range. The presented controller overcomes this problem making the system more robust in eliminating noise & harmonics, and extracting fundamental component of given signal. This component is drawn from the DG with the help of voltage source converter, thus, making its current always distortion free. The proposed control scheme is simulated in MATLAB. Furthermore, experimental verification is done on a laboratory prototype of the same. The steady state and dynamic responses of the system validate its satisfactory performance.
关键词： EPLL,laboratory prototype,microgrid,power quality conditioner,battery,photovoltaic,nonlinear loads,MATLAB,diesel generator
更新于2025-09-10 09:29:36
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Novel Four-Port DC-DC Converter for Interfacing Solar PV-Fuel Cell Hybrid Sources with Low-Voltage Bipolar DC Microgrids
摘要： Bipolarity in dc microgrids is desirable as it enhances the system reliability and efficiency. However, a bipolar dc microgrid (BDCMG) demands multiple conventional dc-dc converters to feed power to both the poles of the bipolar dc grid. To handle this requirement and to maintain high efficiency, a new four-port, dual-input-dual-output (DIDO) converter topology is proposed for interfacing the solar PV and fuel cell (FC) sources to a low-voltage BDCMG. The proposed topology is unidirectional, efficient, and compact. It has fewer circuit elements with only one inductor as compared to the conventional non-isolated dc-dc converters. The proposed converter regulates one of the pole voltages of the dc bus and also ensures MPPT of the PV source. Further, the converter can be operated as a single-input-dual-output (SIDO) converter. The control complexity of the proposed converter is low as it can be operated in various modes with only one set of controllers. To design the control system for the proposed converter, a small-signal model is derived for each operating mode. Loss modelling and efficiency analysis of the proposed converter are carried out and its efficacy and performance are validated by detailed simulation and experimental results under various operating conditions.
关键词： dc-dc converter,small-signal modelling,Bipolar dc microgrid (BDCMG),fuel cell (FC),state-space averaging,photovoltaic (PV)
更新于2025-09-09 09:28:46
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Modeling, numerical simulation, and nonlinear dynamic behavior analysis of PV microgrid-connected inverter with capacitance catastrophe
摘要： The value of the output capacitance (C) should be carefully considered when designing a photovoltaic (PV) inverter since it can cause distortion in the working state of the circuit, and the circuit produces nonlinear dynamic behavior. According to Kirchhoff’s laws and the characteristics of an ideal operational amplifier for a strict piecewise linear state equation, a circuit simulation model is constructed to study the system parameters (time, C) for the current passing through an inductor with an inductance of L and the voltage across the capacitor with a capacitance of C. The developed simulation model uses Runge–Kutta methods to solve the state equations. This study focuses on predicting the fault of the circuit from the two aspects of the harmonic distortion and simulation results. Moreover, the presented model is also used to research the working state of the system in the case of a load capacitance catastrophe. The nonlinear dynamic behaviors in the inverter are simulated and verified.
关键词： harmonic distortion,Runge–Kutta methods,PV microgrid-connected inverter,nonlinear dynamic behavior,capacitance catastrophe
更新于2025-09-09 09:28:46