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[IEEE IECON 2018 - 44th Annual Conference of the IEEE Industrial Electronics Society - D.C., DC, USA (2018.10.21-2018.10.23)] IECON 2018 - 44th Annual Conference of the IEEE Industrial Electronics Society - Basic Study of Solar Battery Powered Wireless Power Transfer System with MPPT Mode and DC Bus Stabilization for Lunar Rover
摘要： Due to the extremely low temperature of Moon surface at lunar night, lunar rover has suffered from heat leakage along the wire connection between solar battery and rover body. In this paper, a wireless power transfer system has been proposed to transfer energy from solar battery to rover body in order to aovid the heat leakage at lunar night. The solar battery is controlled by a buck converter to be switched between the Maximum Power Point Tracking (MPPT) mode and buck mode to output appropriate amount energy to load and battery in rover body through the wireless power transfer system. The load and battery is connected to the DC bus which is controlled by a DC-DC converter to stabilize the voltage. Based on the experiment results, the whole system ef?ciency is about 48.7% at 22 W. It has been demonstrated the system ef?ciency is closely related with system power level due to the power electronics wasted power, and the ef?ciency can be improved to 62.1% with higher system power at 48.6 W.
关键词： DC-DC converter,Lunar rover,heat leakage,wireless power transfer
更新于2025-09-23 15:22:29
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LCL-T Resonant Converter Based on Dual Active Bridge Topology in Solar Energy Applications
摘要： Resonant LCL-T converter can operate as stable voltage source, being fed from current, for instance, the photovoltaic battery. It is shown that LCL-T resonant tank has intrinsic ability to convert stable AC current into stable AC voltage thus parametrically regulating output voltage at a fixed value. This mode of operation is made possible by the use of active (synchronous) rectifier to recoup energy from the output back to the LCL-T resonant tank. Basic characteristics of resonant LCL-T converter regulated by phase shift between inverter and rectifier regardless of a solar battery current drift have been defined. It is shown that phase control guarantees 0 voltage and 0 current on switching; however, turn-off current could be substantial. Calculations and assumptions made in this study have been confirmed by simulation and hardware prototype.
关键词： Bidirectional dual active bridge,ZCS,LCL resonant converter,Resonant converter,Spacecraft power supply system,ZVS
更新于2025-09-23 15:21:21
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A novel photovoltaic battery energy storage system based on modular multilevel converter
摘要： Modular multilevel converters (MMCs) have been widely applied in photovoltaic battery energy storage systems (PV-BESSs). In this paper, a novel topology of PV-BESS based on MMC is proposed, where the batteries are connected to the sub-modules through DC-DC converters. It is necessary to analyze the control strategies of both DC-DC converters and MMC. Specifically, the capacitor voltage balancing and the modulation mode are important. The sorting method is proposed to balance the capacitor voltages in this paper. Moreover, carrier phase shift-square wave modulation with the highest voltage utilization ratio and the highest power transfer capability is proposed to generate PWM singles for MMC-PV-BESS. In order to verify the availability of the proposed control strategy, a simulation model is built and related experiments are carried out. The simulation results and experimental results are consistent with the theory. As a result, the voltages of all capacitors could be balanced, and the MMC-PV-BESS could reliably work.
关键词： photovoltaic,modular multilevel converter,battery energy storage system,DC-DC converter,control strategy
更新于2025-09-23 15:21:21
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[IEEE 2018 IEEE Innovative Smart Grid Technologies - Asia (ISGT Asia) - Singapore (2018.5.22-2018.5.25)] 2018 IEEE Innovative Smart Grid Technologies - Asia (ISGT Asia) - Matrix Converter for Grid Connected Wind Energy Conversion Systems
摘要： Among the renewables, wind is a cost effective energy source. This paper describes the use of a matrix converter for permanent magnet synchronous generator (PMSG) based grid connected wind turbine systems. A simulation model has been developed using MATLAB/Simulink environment. The system comprises a wind turbine, a PMSG, and a 3-phase matrix converter which acts as an interface between the wind turbine system and the electric power grid. The proposed system can also be used in small scale wind turbine systems that can be employed in environment friendly homes. Simulation results are presented to verify the operation and performance of the proposed system.
关键词： Power converters (PC),Matrix converter (MC),Permanent magnet synchronous generator (PMSG),Wind energy conversion system (WECS)
更新于2025-09-23 15:21:21
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[IEEE 2018 IEEE Innovative Smart Grid Technologies - Asia (ISGT Asia) - Singapore (2018.5.22-2018.5.25)] 2018 IEEE Innovative Smart Grid Technologies - Asia (ISGT Asia) - Solar Plant Integration to Utility Grid with Improved Power Quality by using RNN-Hebbian-LMS Current Controller
摘要： In this paper a new topology of current control technique is proposed, to transfer the improved quality of power produced from the solar plant to the utility grid. Also, a high-gain high-efficient converter driving with Kalman MPPT is used to boost the low voltage levels of the PV array. The proposed control uses recurrent neural network RNN-Hebbian -LMS based current controller to achieve the better performance in terms of power quality. The RNN network uses feedback signals to control the current flow from solar plant to the utility grid. The Hebbian - LMS (least mean square) algorithm is used to update the weights of the RNN based current controller. The main advantage of the RNN-Hebbian-LMS current control technique is to maintain the constant voltage. Besides, it also provides system stability over wide range of parameter variations and damp out the oscillations quickly. The proposed algorithm is able to overcome the stability and sensitivity problems incurred with the conventional PI current controller. The simulation results will be compared with the conventional PI and proposed RNN-Hebbiab-LMS current controllers. Finally, the proposed current controller shows the improved power quality, quick settling time and more stable comparing with the conventional controllers.
关键词： Least Mean Square (LMS),Utility Grid,Solar Plant,High-Gain converter,PV array,Maximum Power Point Tracking (MPPT),Recurrent Neural Network (RNN)
更新于2025-09-23 15:21:21
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LCO-FLL control for single-phase utility integrated single-stage solar PV system
摘要： This study presents a limit cycle oscillator-frequency locked loop (LCO-FLL) control for single-phase utility integrated single-stage photovoltaic (PV) system. The proposed topology increases the utility of the voltage-source converter (VSC), particularly in the absence of PV generation. It has the potential to load harmonics current mitigation. It estimates harmonic free load current accurately with low computational requirement due to the absence of cumbersome mathematical algorithm and transformation techniques. It provides reactive power compensation, both in the absence and the presence of PV generation, improves transient response during dynamics in load and varying irradiance conditions. The total harmonic distortions of utility current and utility voltage, compliance the limit of the IEEE-519 standard. The proportional–integral (PI) regulator regulates the DC-link voltage of VSC input to the reference DC-link voltage. The incremental conductance-based technique derives the reference DC-link voltage. The dynamic behaviour of the LCO-FLL-based control is improved using a feed-forward loop for the PV power sharing. It also reduces loading on the PI controller. Test results demonstrate satisfactory performance of LCO-FLL-based control.
关键词： single-stage solar PV system,LCO-FLL control,proportional–integral (PI) regulator,incremental conductance-based technique,feed-forward loop,reactive power compensation,voltage-source converter (VSC),IEEE-519 standard,single-phase utility
更新于2025-09-23 15:21:21
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A Soft-switched, Multiport Photovoltaic Power Optimizer with Integrated Storage Interface and Output Voltage Regulation
摘要： This paper proposed a multiport converter (MPC) configuration for photovoltaic (PV)-battery system. In the battery charging and discharging circuits are integrated with the PV power optimizer through high frequency AC link. The proposed converter system is capable of regulating the output voltage, following battery charging profile and tracking the maximum power point (MPP) of each PV module. Variable switching frequency is used to achieve MPPT in this design. All the switches of the converter are able to achieve soft-switching turn on and turn off at different operating conditions. The operating principles and the control strategy of the proposed converter are presented. Simulation results and experimental results on a 175W system are presented to validate the features of the proposed converter.
关键词： Soft-switching,Multi-resonant converter,Multiport converter (MPC),MPPT,battery charging profile,PV-battery system
更新于2025-09-23 15:21:01
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[IEEE 2019 IEEE Conference on Power Electronics and Renewable Energy (CPERE) - Aswan City, Egypt (2019.10.23-2019.10.25)] 2019 IEEE Conference on Power Electronics and Renewable Energy (CPERE) - Common-Mode Voltage Analysis of Three-phase Quasi-Z Source Inverters for Transformerless Photovoltaic Systems
摘要： Reducing the capacitance of programmable capacitor arrays (PCAs), commonly used in analog integrated circuits, is necessary for low-energy applications. However, limited mismatch data are available for small capacitors. We report mismatch measurement for a 2-fF poly–insulator–poly (PIP) capacitor, which is the smallest reported PIP capacitor to the best of the authors’ knowledge. Instead of using complicated custom on-chip circuitry, direct mismatch measurement is demonstrated and veri?ed using Monte Carlo simulations and experimental measurements. Capacitive test structures composed of 9-bit PCAs are implemented in a low-cost 0.35-μm CMOS process. Measured data are compared to the mismatch of large PIP capacitors, theoretical models, and recently published data. Measurement results indicate an estimated average relative standard deviation of 0.43% for the 2-fF unit capacitor, which is better than the reported mismatch of metal–oxide–metal (MOM) fringing capacitors implemented in an advanced 32-nm CMOS process.
关键词： programmable capacitor array (PCA),Analog-to-digital converter (ADC),energy-ef?cient circuits,mismatch characterization,capacitance-to-digital converter (CDC),capacitor mismatch
更新于2025-09-23 15:21:01
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[IEEE 2019 4th International Conference on Recent Trends on Electronics, Information, Communication & Technology (RTEICT) - Bangalore, India (2019.5.17-2019.5.18)] 2019 4th International Conference on Recent Trends on Electronics, Information, Communication & Technology (RTEICT) - Modeling and simulation of a Micro-grid connected with PV solar cell & its protection strategy
摘要： In the present day scenario due to change the rapid demand and over global climate change in increased the sustainable Distributed generation (DG) resources such as fuel , wind and solar. Society moving to the conventional resources like as solar, wind etc. To fill surplus demand need alternative sources like solar cell. It has a distinct concern in this scenario as it is pollution free, clean, unlimited and free. In this Paper we are design a micro-grid model by using PV cell with help of boot converter. This model is basically applicable in rural or islanded load system. Here we also discussing the operation of autonomous or grid connected microgrid model by using PV cell with help of Boost converter. PV model is completed by using MATLAB SIMULINK and different current Voltage and power levels. The MATLAB SIMULINK is done in island mode as well as grid-connected mode at the both end, grid end and load end. This study aims to understand the change of fault value Compared to healthy surgery that may serve as a cornerstone Selection of protection strategies that may work effectively both operating modes.
关键词： PV array,Distributed generation (DG),Boost converter,Relay,Voltage Source Converter (VSC),Maximum Power Point Tracking (MPPT)
更新于2025-09-23 15:21:01
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[Lecture Notes in Electrical Engineering] Microelectronics, Electromagnetics and Telecommunications Volume 521 (Proceedings of the Fourth ICMEET 2018) || Performance Analysis of a PV System Using HGB Converter
摘要： A photovoltaic array based system using a transformer-less high gain interleaved dc–dc boost converter is proposed in this paper. The renewable energy sources such as photovoltaic array and fuel cells provide only a time-varying and low dc voltage which cannot be directly used as the front-end for the loads or dc grid. Hence, there is a need for power electronic interfaces for matching the environmental-friendly sources of energy to the load. The interleaved converter used in the proposed system has the capability of canceling the input current ripple without increasing the component counts in the converter using a preselected duty cycle. Also, the large voltage gain and high ef?ciency of the converter are the added advantages to the proposed system. Analysis, simulation, and experimental investigation of the system proposed were carried out and the results are compared to validate the proposed system effectiveness.
关键词： Photovoltaic array,Interleaving technique,A high gain boost converter,Transformer-less dc–dc converter
更新于2025-09-23 15:21:01