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[IEEE 2018 IEEE 2nd Colombian Conference on Robotics and Automation (CCRA) - Barranquilla, Colombia (2018.11.1-2018.11.3)] 2018 IEEE 2nd Colombian Conference on Robotics and Automation (CCRA) - Modeling and Simulation of a Grid-Tied 21.0 kWp Real Solar Power Plant as Case Study, Using the VHDL-AMS Language
摘要： This paper presents the utilization of hardware description language VHDL-AMS (Very High-Speed Integrated Circuit plus Hardware Description Language that includes analog and mixed-signal extensions) for modeling and simulation a grid-tied 21.0 kWp real solar power plant, admitted as case study. The case study used in this research consists of a photovoltaic power system with the following features: 1) It has 90 panels of 255 Wp and 3 SMA On Grid inverters, 2) It operates without batteries, and 3) It has a dynamic power controller, called Circuitor (CDP-0), to guarantee zero injection into the grid. The main contribution of this work is modeling and simulation of a grid-tied real solar power plant, using the VHDL-AMS language (with the support of software SystemVision?), in order to develop a simulating tool capable to find the real electrical energy generation in a photovoltaic system, considering the monthly averaged direct normal radiation and the solar panel characteristics. This paper aims to present the first major developments for the future construction of a bigger VHDL-AMS tool that will allow the simulation of photovoltaic power systems, operating in a synergic way with hydroelectric power plants previously built, with the aim of optimize the coordinated operation between hydropower and solar energy, for periods of rain and hydrological drought.
关键词： Solar Power Plant,Hardware description languages,VHDL-AMS Language,Photovoltaic systems
更新于2025-09-23 15:23:52
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[IEEE 2018 IEEE Energy Conversion Congress and Exposition (ECCE) - Portland, OR, USA (2018.9.23-2018.9.27)] 2018 IEEE Energy Conversion Congress and Exposition (ECCE) - Current-Fed Quasi Z-Source Inverter Based PV Distributed Generation Controller
摘要： Recently, the renewable photovoltaic distributed generation (PV-DG) enjoys a rapid growth globally due to the advancement in solar systems and power electronics technologies. However, the intermittent nature of solar radiation and performance of the attached power converters, inevitably poses some challenges to the power grids integrated large-scale solar-farms (SF). These challenges include frequency oscillations, voltage variation and power quality issues. To overcome these problems, this study proposes a Current-Fed quasi Z-source Inverter (CF-qZSI) as an alternative converter for distribution generation controllers to facilitate the integration of a PV energy source into a weak power system. The detailed model of the CF-qZSI-based distribution controller (CqZDC) and its control system are developed. The dynamic performance of the CqZDC device is evaluated to validate different objectives using an actual field data and RTDS simulation platform.
关键词： frequency stability,current source inverter,wide band gap devices,Accommodation of renewable energy resources,power quality improving,facilitating of distributed electricity generations
更新于2025-09-23 15:23:52
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[IEEE 2018 IEEE Energy Conversion Congress and Exposition (ECCE) - Portland, OR, USA (2018.9.23-2018.9.27)] 2018 IEEE Energy Conversion Congress and Exposition (ECCE) - Comparative Analysis of Non-Isolated and Isolated Type Partial-Power Optimizers for PV-Battery Series Inverter Architecture
摘要： A seamless battery integration with higher power conversion efficiency and lower system power rating can be achieved by adopting the DC-series battery integration topology into a photovoltaic (PV) string inverter system, the PV-battery series inverter. The PV-battery series inverter uses the partial-power processing technique to achieve flexible current control between PV string and battery. In the process of designing the partial-power DC-DC optimizer, different types of DC-DC converters and different size of batteries can be considered, and the system efficiency and the power rating vary based on the system design. This paper presents a comparative analysis of the different type partial-power optimizers for the PV-battery series inverter in residential rooftop applications (< 10kW PV output power, < 500V DC-bus voltage), in consideration of the DC-DC converter topology. Non-isolated and isolated bidirectional DC-DC converters are considered and selection of battery voltage in each case is made to have the optimized system design. The operation of the designed DC-DC optimizer is verified through controller hardware-in-the-loop test.
关键词： pv-battery series inverter,residential rooftop PV application,comparative analysis,non-isolated and isolated bidirectional dc-dc converters,partial-power dc-dc optimizer,PV-battery integration,dc-series
更新于2025-09-23 15:23:52
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[IEEE 2018 IEEE International Conference on Electrical Engineering and Photonics (EExPolytech) - Saint Petersburg, Russia (2018.10.22-2018.10.23)] 2018 IEEE International Conference on Electrical Engineering and Photonics (EExPolytech) - Signal Distortion Decreasing in Envelope Tracking Power Amplifiers
摘要： When amplifying signals with a high peak to average power ratio, the efficiency of linear radio frequency (RF) power amplifiers (PA) is reduced to about 30%. This flaw can be noticeably corrected by using envelope tracking technology. However, using switched mode PAs of envelope signal (ES) is accompanied by the emergence of nonlinear distortions, which can appear as undesirable components in the RF PA signal spectrum. One of the ways to reduce the negative influence of the switched mode is to use ES PA of multicell structure. The paper covers the issues of the ES PA number of cells influence on its efficiency and output signal distortion, as well as its influence on the efficiency and output signal distortion of the RF PA. It is shown that rational choice of the number of cells allows to increase the efficiency of ES PA from 94 through 98% and to reduce the level of intermodulation components in the envelope signal spectrum by 20 ... 25 dB.
关键词： envelope tracking,power amplifier,harmonic distortion,efficiency,multicell
更新于2025-09-23 15:23:52
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[IEEE 2018 International Conference on Control, Power, Communication and Computing Technologies (ICCPCCT) - Kannur,Kerala, India (2018.3.23-2018.3.24)] 2018 International Conference on Control, Power, Communication and Computing Technologies (ICCPCCT) - MPPT Based SEPIC Converter With Voltage Doubler Cell For PV Systems
摘要： This article introduces “MPPT based SEPIC converter with voltage doubler cell for PV systems”. The primary aim of this study is to efficient energy conversion by utilizing SEPIC converter. The SEPIC converter accomplishes requirements like 1) Large transformation ratio with lesser number of elements. 2) Minimization of heavy stresses across switch. The description of operating principle of analysis is expressed within this article. The PV modeling along with MPPT algorithm and SEPIC converter for 250W are simulated in the MATLAB Simulink.
关键词： Maximum power point tracking (MPPT),Voltage doubler cell,SEPIC converter,Photovoltaic systems
更新于2025-09-23 15:23:52
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[IEEE 2018 International Conference on Control, Power, Communication and Computing Technologies (ICCPCCT) - Kannur,Kerala, India (2018.3.23-2018.3.24)] 2018 International Conference on Control, Power, Communication and Computing Technologies (ICCPCCT) - Four Switch Three-Phase Inverter Fed Induction Motor for Economical and Efficient Stand Alone Solar Water Pump
摘要： Induction motors are commonly used in industries due to its reduced cost and minimum maintenance. In this proposed system induction motor is used for the purpose of solar based water pumping application. As the energy consumption is increasing, the energy generated is alone is not able to supply the entire load requirement. Among the available renewable energy sources, solar energy is the leading one. The work proposes a three-phase four-switch inverter for photovoltaic (PV) water pumping or treatment systems. The use of batteries can be avoided, since the converter used in this proposed work is two inductor boost converter. By considering the economic factor and life span of the device, electro-chemical storage elements are avoided. Also an effective intelligent hill climbing algorithmis used to extract maximum power from PV cell. The use of a three- phase induction motor is a better solution to the dc motor for water pumping application.
关键词： MPPT,photovoltaic (PV) power systems,Induction motor,three-phase four switch inverter,two-inductor boost converter
更新于2025-09-23 15:23:52
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[IEEE 2018 5th International Conference on Information Technology, Computer, and Electrical Engineering (ICITACEE) - Semarang, Indonesia (2018.9.27-2018.9.28)] 2018 5th International Conference on Information Technology, Computer, and Electrical Engineering (ICITACEE) - Maximum Power Tracking of Solar Panel using Modified Incremental Conductance Method
摘要： Static method to optimize a power delivered by a solar panel is called Maximum Power Point Tracking (MPPT). The method tries to find a maximum power from its PV solar panel characteristics curve using a power converter. MPPT is realized using a buck boost converter and Filter variable step size modified incremental conductance method. Experimental works show that the MPPT system successfully seeks its maximum power and decreases the oscillation during pathway to reach the maximum power. The power generated by the solar panels at 1000 watt/m2 (without MPPT) is 4.17 watt (R = 50 Ω) and 2.37 watts (R = 25 Ω). MPPT system can increase the power to solar panels into 4.48 watt (R = 50 Ω), and 4.32 watt (R = 25 Ω). The power generated by the solar panels at 750 watt/m2 (without MPPT) is 2.53 watt (R = 50 Ω) and 1.48 watts (R = 25 Ω). MPPT system designed also improve the power of solar panels into 3.02 watt (R = 50 Ω) and 3.02 watt (R = 25 Ω). The error steady state in the maximum power condition is 1.188%.
关键词： Maximum Power Point Tracking,Filter variable modified Incremental Conductance,Buck Boost Converter
更新于2025-09-23 15:23:52
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[IEEE 2018 7th International Conference on Renewable Energy Research and Applications (ICRERA) - Paris, France (2018.10.14-2018.10.17)] 2018 7th International Conference on Renewable Energy Research and Applications (ICRERA) - Performance-Improved Maximum Power Point Tracking Control for PV System
摘要： Dc distribution systems are gaining attracted because of expanding the utilization of solar photovoltaic (PV) power. In such a situation, the design of the maximum power point tracking (MPPT) controllers should consider not only varying solar irradiance but also the dc bus voltage fluctuation. The purpose of this paper is to present a performance-improved MPPT controller using a derivative control to a PV panel voltage. The proposed method provides better performances than an existing reported method which uses the derivative control to a reactor current of a dc-dc converter. It is verified that the proposed method obtains quick responses to the rapid change of solar irradiance and dc bus voltage compared to conventional methods.
关键词： dc distribution system,dynamic response,PV system,maximum power point tracking (MPPT),dc-dc converter
更新于2025-09-23 15:23:52
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[IEEE 2018 20th International Conference on Transparent Optical Networks (ICTON) - Bucharest (2018.7.1-2018.7.5)] 2018 20th International Conference on Transparent Optical Networks (ICTON) - Models for Evaluating Power Saving Techniques in Flexible Optical Access Networks
摘要： Increased use of power in telecommunication networks has not only increased the cost of operation but also increased the carbon footprint and the environmental hazards. In this paper, we propose models for evaluating power saving techniques in flexible passive optical access networks. In addition, the power model of their sleep modes are proposed and are extended to analyse the power saving potentials of state-of-art dynamic bandwidth allocation (DBA) algorithms like sleep mode aware (SMA) and hybrid sleep mode aware (HSMA).
关键词： flexible optical access networks,TWDM-PON,power savings
更新于2025-09-23 15:23:52
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[IEEE 2018 IEEE International Meeting for Future of Electron Devices, Kansai (IMFEDK) - Kyoto, Japan (2018.6.21-2018.6.22)] 2018 IEEE International Meeting for Future of Electron Devices, Kansai (IMFEDK) - Thermoelectric Conversion Devise Using Ga-Sn-O Thin Film Prepared by Mist CVD Method
摘要： We proposed a GTO thin film thermoelectric conversion devise by the mist CVD method. The thermoelectric conversion devise with the best performance had a Seebeck coefficient of -193[μV/K], a conductivity of 6.35[S/cm], and a PF of 0.0179[mW/mK2].
关键词： Ga-Sn-O,Seebeck coefficient,conductivity,mist CVD,power factor
更新于2025-09-23 15:23:52